Sharp Fo 475Th Users Manual

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UX-258TH
FO-475TH

SERVICE MANUAL
No. 00ZUX258THSME

FACSIMILE
UX-258
MODEL FO-475
CONTENTS
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications ............................................
[2] Operation panel.........................................
[3] Transmittable documents ..........................
[4] Installation .................................................
[5] Quick reference guide ...............................

CHAPTER 5. CIRCUIT DESCRIPTION
[1] Circuit description ..................................... 5-1
[2] Circuit description of control PWB ............ 5-2
[3] Circuit description of TEL/LIU PWB .......... 5-8
[4] Circuit description of
power supply PWB ............................5-11
[5] Circuit description of CIS unit ...................5-11

1-1
1-2
1-3
1-4
1-7

CHAPTER 2. ADJUSTMENTS
[1] Adjustments ............................................... 2-1
[2] Diagnostics and service soft switch .......... 2-2
[3] Troubleshooting ...................................... 2-17
[4] Error code table....................................... 2-18

CHAPTER 6. CIRCUIT SCHEMATICS AND
PARTS LAYOUT
[1] Control PWB circuit ................................... 6-1
[2] TEL/LIU PWB circuit .................................. 6-9
[3] Power supply PWB circuit ...................... 6-11
[4] Operation panel PWB circuit ................... 6-13

CHAPTER 3. MECHANISM BLOCKS
[1] General description .................................. 3-1
[2] Disassembly and assembly
procedures ....................................... 3-3

CHAPTER 7. OPERATION FLOWCHART
[1] Protocol ..................................................... 7-1
[2] Power on sequence ................................... 7-2

CHAPTER 4. DIAGRAMS
[1] Block diagram ............................................4-1
[2] Wiring diagram .......................................... 4-2
[3] Point-to-point diagram ............................... 4-3

CHAPTER 8. OTHERS
[1] Service tools ............................................. 8-1
[2] IC signal name .......................................... 8-4
PARTS GUIDE

Parts marked with " " is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for
maintaining the safety and performance of the set.

SHARP CORPORATION
1-1

This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

UX-258TH
FO-475TH

CAUTION FOR BATTERY REPLACEMENT
(Danish)
ADVARSEL !
Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandoren.
(English)
Caution !
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type
recommended by the equipment manufacturer.
Discard used batteries according to manufacturer’s
instructions.
(Finnish)
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan
tyyppiin. Hävitä käytetty paristo valmistajan ohjeiden
mukaisesti.
(French)
ATTENTION
Il y a danger d’explosion s’ il y a remplacement incorrect
de la batterie. Remplacer uniquement avec une batterie du
même type ou d’un type recommandé par le constructeur.
Mettre au rébut les batteries usagées conformément aux
instructions du fabricant.
(Swedish)

VARNING
Explosionsfare vid felaktigt batteribyte.
Använd samma batterityp eller en ekvivalent
typ som rekommenderas av apparattillverkaren.
Kassera använt batteri enligt fabrikantens
instruktion.

(German)
Achtung
Explosionsgefahr bei Verwendung inkorrekter Batterien.
Als Ersatzbatterien dürfen nur Batterien vom gleichen Typ oder
vom Hersteller empfohlene Batterien verwendet werden.
Entsorgung der gebrauchten Batterien nur nach den vom
Hersteller angegebenen Anweisungen.

1–2

UX-258TH
FO-475TH

CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications
Automatic dialing:

Rapid Key Dialing: 10 numbers
Speed Dialing: 20 numbers

Fax paper:

Initial starter roll (included with fax
machine): 10 m roll
Recommended replacement roll:
FO-40PR 50 m roll

Automatic document feeder: 10 sheets max.

Effective scanning width:

210 mm max.

Contrast control:

Automatic/Dark selectable

Copy function:

Standard

Telephone function:

Standard
(cannot be used for incoming/outgoing
if power fails)

Power requirements:

220-240 V, 50 Hz

Paper cutting method:

Automatic cutter

Operating temperature:

5 to 35°C

Modem speed:

9600 bps with automatic fallback to
7200, 4800, or 2400 bps

Humidity:

Maximum: 85 %

Transmission time* :

Approx. 15 seconds (Sharp special mode)

Power consumption:

Stand-by: 6.0 W

Display:

7 x 5 dots, 1 line by 16-digit display

Reception modes:

TEL, FAX, TEL/FAX, ANS.

Resolution:

Horizontal:
8 dots/mm
Vertical:
Standard: 3.85 lines/mm
Fine/Halftone: 7.7 lines/mm
Super fine: 15.4 lines/mm

Maximum: 120 W
Dimensions:

Width: 308 mm
Depth: 256 mm
Height: 138 mm

Weight:
*

Recording system:

Thermal recording

Halftone (grayscale):

64 levels

Applicable telephone line:

Public switched telephone network/PBX

Compatibility:

ITU-T (CCITT) G3 mode

Configuration:

Half-duplex, desktop transceiver

Compression scheme:

MH, MR, Sharp special mode

Scanning method:

Sheet-feeder CIS (Contact Image Sensor)

Effective recording width:

210 mm max.

Input document size:

Automatic feeding:
Width  148 to 216 mm
Length  140 to 297 mm
Manual feeding:
Width  148 to 216 mm
Length  140 to 600 mm

Approx. 2.6 kg
(without attachements)

Based on ITU-T (CCITT) Test Chart #1 at standard resolution in Sharp
special mode, excluding time for protocol signals (i.e., ITU-T phase C
time only).

As a part of our policy of continuous improvement, SHARP reserves the right to make design and specification changes for procduct
improvement without prior notice. The performance specifications figures indicated are nominal values of production units. There may be some
deviation from these values in individual units.

1–1

UX-258TH
FO-475TH

[2] Operation panel

1

3

2

4

6 7 8 9 10 11

5

RECEPTION
MODE FUNCTION RESOLUTION

TEL FAX

REC

REPEAT

12

PLAY/SKIP DELETE REMINDER

VOLUME
DOWN

TEL/FAX ANS.

ABC

UP

DIGITAL

ANSWERING
SYSTEM

STOP

DEF
SPEED DIAL

JKL

GHI

TUV

02

03

04

05

06

07

08

09

10/POLL

COPY/HELP
REDIAL

PQRS

01

MNO

WXYZ
HOL/SEARCH

START/MEMORY

SPEAKER

13

14 15 16 17

1. Display

Press this key to select the reception mode. An arrow in the
display will point to the currently selected reception mode.

14. SPEED DIAL key
Press this key to dial a 2-digit Speed Dial number.

15. REDIAL key
Press this key to automatically redial the last number dialed.

16. SPEAKER key

4. FUNCTION key

Press this key to hear the line and fax tones through the
speaker when sending a document, or dialing a voice number.
Note: This is not a speakerphone. You must pick up the
handset to talk with the other party.

Press this key to select various special function.

5. RESOLUTION key
Press this key to adjust the resolution and contrast before
sending or copying a document.

17. HOLD/SEARCH key
Press this key to search for an automatic dialing number,
or, during a phone conversation, press this key to put the
other party on hold.

6. VOLUME keys
Press these keys to adjust the volume of the speaker when
the SPEAKER key has been pressed, or the volume of the
ringer at all other times.

18. Rapid Dial keys
Press one of these keys to dial a fax or voice number
automatically. (Note that you must attach the Rapid Key
labels.)

7. REC key
Press this key to record a phone conversation or a message.

8. REPEAT key
Press this key to repeat playback of a message.

19. START/MEMORY key
Press this key to send or receive a document manually
when off hook.

9. PLAY/SKIP key
Press this key to play recorded messages. During playback,
press it to skip forward to the next message.

20

Use these keys to dial numbers, and enter number and letters
during number/name storing procedures.

Pull this release toward you to open the operation panel.

3. RECEPTION MODE key

19

13. Number keys

This displays messages and prompts during operation and
programming.

2. PANEL RELEASE

18

20. COPY/HELP key
When a document is in the feeder, press this key to make
a copy. At any other time, press this key to print out the
Help List, a quick refernce guide to the opeation of your
fax.

10. DELETE key
Press this key to erase recorded messages.

11. REMINDER key
Press this key to send a fax and/or voice message to another
party or to yourself at a preset time.

12. STOP key
Press this key to stop operations before they are completed.

1–2

UX-258TH
FO-475TH

[3] Transmittable documents

5. Automatic Document Feeder Capacity

1. Document Sizes

Number of pages that can be placed into the feeder at anytime is as
follows:

Normal size

width

148 – 216 mm

Normal size: max. ADF 10 sheets

length

140 – 297 mm

Special size: single sheet only (manual feed)
NOTES:

(Max.)

(Min.)
140mm
148mm

•
600mm

(Max.)
A4 size
297mm

When you need to send or copy more pages than the feeder
limit, place additional pages in feeder when last page in
feeder is being scanned.
Place additional pages carefully and gently in feeder.
If force is used, double-feeding or a document jam may
result.

6. Readable Width & Length

216mm
[Normal size]

The readable width and length of a document are slightly smaller than
the actual document size.

216mm
[Special size]

Note that characters or graphics outside the effective document scanning range will not be read.

Use document carrier sheet for smaller documents.
*

•

•

With special sizes, only one sheet can be fed into the machine at a
time. Insert next page into feeder as current page is being scanned.

Readable width

210 mm, max.

2. Paper Thickness & Weight
Thickness 2.4 x 10–3 –4.7 x 10–3 inch
Normal size

ADF 10
sheets

Weight

0.15 x 10–3 lbs/inch2

Thickness 4.7 x 10–3 –7.9 x 10–3 inch
Special size
Weight

Readable width

0.15 x 10–3 –0.20 x 10–3 lbs/inch2

3. Document Types
•

•

Normal paper
Documents handwritten in pencil (No. 2 lead or softer), fountain pen,
ball-point pen, or felt-tipped pen can be transmitted.
Documents of normal contrast duplicated by a copying machine can
also be transmitted.

•

Diazo copy (blue print)

•

Carbon copy

Readable length

This is the length of the document sent minus 4 mm from the top and
bottom edges.

4mm

Diazo copy documents of a normal contrast may be transmitted.

Readable length

A carbon copy may be transmitted if its contrast is normal.

4mm

4. Cautions on Transmitting Documents
•

Documents written in yellow, greenish yellow, or light blue ink cannot
be transmitted.

•

Ink, glue, and correcting fluid on documents must be dry before the
documents can be transmitted.

•

All clips, staples and pins must be removed from documents be-fore
transmission.

•

Patched (taped) documents should be copied first on a copier and
then the copies used for transmission.

•

All documents should be fanned before insertion into the feeder to
prevent possible double feeds.

1–3

UX-258TH
FO-475TH

7. Use of Document Carrier Sheet

TELEPHONE JACK

A document carrier sheet must be used for the following documents.
• Those with tears.

A standard telephone jack must be located near the machine.
This is the telephone jack commonly used in most homes and offices.

•
•

•

Those smaller than size 140 mm (W) x 140 mm (L).
Carbon-backed documents

Make print straight
across paper
E.G.
Place the document
carrier in the document
feeder with the clear film
side down

Plugging the fax machine into a jack which is not an jack may result
in damage to the machine or your telephone system. If you do not
know what kind of jack you have, or needed to have one installed,
contact the telephone company.

2. Connections

1 Connect the handset as shown and place it on the handset rest.

♦ Make sure the handset cord goes into the unmarked jack on the
side of the machine!
♦ Use the handset to make ordinary phone calls, or to transmit and
receive documents manually.

Direction of insertion
NOTE: To transmit a carbon-backed document, insert a white sheet of
paper between the carbon back of the document and the document carrier.
• Those containing an easily separable writing substance (e.g., tracing paper written on with a soft, heavy lead pencil).
NOTES:

•

When using the document carrier, carefully read the instructions written on the back.

•

If the document carrier is dirty, clean it with a soft, moist
cloth, and then dry it before using for transmission.

•

2 Plug the power cord into a 220-240 V, 50 Hz, earthed (2-prong) AC
outlet.

♦ Caution: Do not plug the power cord into any other kind of outlet.
This will damage the machine and is not covered under the
warranty.

Do not place more than one document in the carrier at a
time.

Note: The shape of the plug is different in certain countries.

[4] Installation

♦ The machine does not have a power on/off switch, so the power
is turned on and off by simply plugging or unplugging the power
cord.

1. Site selection
Take the following points into consideration when selecting a site for this
model.

Note: If your area experiences a high incidence of lightning or power
surges, we recommend that you install surge protectors for the
power and telephone lines. Surge protectors can be purchased
from your dealer or at most telephone specialty stores.

ENVIRONMENT

•
•

The machine must be installed on a level surface.

•

Provide easy access to the front, back, and sides of the machine. In
particular, keep the area in front of the machine clear, or the original
document may jam as it comes out after scanning.

•
•

The temperature should be between 5° and 35°C.

Keep the machine away from air conditioners, heaters, direct sunlight, and dust.

3 Insert one end of the telephone line cord into the "TEL. LINE" jack.

The humidity should be between 30% and 85% (without condensation).

Insert the other end into a standard (RJ11C) single-line telephone
wall jack.

ELECTRICITY

♦ Be sure to insert the telephone line cord into the "TEL. LINE"
jack. Do not insert into the "TEL. SET" jack.

220-240 V, 50 Hz, earthed (2-prong) AC outlet is required.

Caution!

•

Connection to a power source other than that specified will cause
damage to the equipment and is not covered under the warranty.

•

If your area experiences a high incidence of lightning or power surges,
we recommend that you install a surge protector for the power and
telephone lines. Surge protectors can be purchased at most telephone
specialty stores.

If the machine is moved from a cold to a warm place...
If the machine is moved from a cold to a warm place, it is possible that
the reading glass may fog up, preventing proper scanning of documents
for transmission. To remove the fog, turn on the power and wait approximately 2 hours before using the machine.

TE
SEL. T
T EL
LI .
NE

1–4

UX-258TH
FO-475TH

3 Unwrap the roll of fax paper and place it in the compartment.

3. Original document support

1 Rotate the original document support so that it points straight out.

•

Important: The roll must be placed so that the leading edge of
the paper unrolls as shown. (The paper is only coated on one
side for printing. If the roll is placed backwards, the paper will
come out blank after printing.)
NO!

YES

4. Loading the fax paper
•

Your fax machine prints incoming faxes on a special kind of paper
called thermal paper.

•

The fax’s print head creates text and images by applying heat to
the thermal paper.

Note: The power must be on (plug in the power cord) when loading
fax paper in the fax machine.

1 Pull the release marked PANEL RELEASE toward you and open the
operation panel.

4 Insert the leading edge of the paper into the paper inlet. Continue to

push the paper through the inlet until it comes out of the opening in
the front of the fax.
Paper inlet

2 Remove the packing paper from the paper compartment.
Remove
cardboard
and tape
The paper will reappear here. Make
sure it is aligned between the arrows
on each side of the guide, and then
passes under the plate and out the
front of the fax.

5 Close the operation panel, making sure it clicks into place.
Press here to close

2
Click!

1

6 A short length of the fax paper will feed out and be cut off. (If this
doesn’t happen, repeat the loading procedure.)

Note: The fax has a built-in anti-curl mechanism that will help to reduce
paper curling problems. The anti-curl mechanism is more
effective at the beginning of the paper roll and less effective
towards the end.

1–5

UX-258TH
FO-475TH

3 Cut off the wrinkled part of the paper.

4. Clearing a jammed document
If the original document doesn’t feed properly during transmission or
copying, or DOCUMENT JAMMED appears in the display, first try pressing the START/MEMORY key. If the document doesn’t feed out, open
the operation panel and remove it.
Important: Do not try to remove a document without opening the operation panel. This may damage the feeder mechanism.

1 Pull the release marked PANEL RELEASE toward you and open the
operation panel.

4 Reload the paper.
•

Jammed fax paper is often caused by improper loading. Be sure
to carefully follow the instructions for paper loading given in "Loading the Fax Paper" in page 1-5.

2 Remove the document.

5 If the display still shows PAPER JAMMED
If the display still shows PAPER JAMMED after you press the START/
MEMORY key in Step 2 above, the cutter is still engaged in the cutting
position. To open the cutter, turn the fax up on its rear end and insert
any long, rod-like object with a flat or blunt end into the hole marked
CUTTER RESET. Continue to push the rod in until you feel it move a
lever inside the machine.

5. Clearing jammed fax paper

1 Pull the release marked PANEL RELEASE toward you and open the
operation panel.

TER
CUT T
E
RES

2 Remove the paper roll.
•
•

ABC

If any pieces of paper are stuck in the cutter, remove them with
caution.

DEF
SPEED DIAL

Press the START/MEMORY key to reset the cutter.
GHI

JKL

MNO

Press this key to delete
the letter highlighted by
the cursor.

REDIAL

Press this key to move
the cursor to the left.
PQRS

TUV

WXYZ
HOLD/SEARCH

Press this key to change
case.
SPEAKER

Press this key to move
the cursor to the right.
Press either key repeatedly to select
one of the following symbols.

1–6

UX-258TH
FO-475TH

[5] Quick reference guide
FUNCTION key menu
The following chart shows the layout of the functions and settings accessed by pressing the FUNCTION key. First press the FUNCTION key, the
appropriate numeric key as shown, and then "#" or " " until the desired item appears.
Instructions for making each setting appear in the display. If you have any difficulty, refer to the detailed instructions on the page shown below the setting.
FUNCTION

0

1

A.M. Settings

Timer Mode

Listing Mode

Entry Mode

Optional Settings

Send Mode

Timer List

Fax/Tel Numbers
for Auto Dialing

Fine Resolution
Priority

Transaction Report
Print Select

Polling Mode

Telephone
Number List

Own Number and
Name Set

Number of Rings
To Answer

Dial Mode

Polling Security
Select

5 Rings TEL
Answer

Passcode List

Recall Interval

Date and Time Set

Recall Times

Anti Junk Number
Set

Telephone/Fax
Remote Number

OGM Recording

Transfer
Function

Toll Saver
Fax Box
ICM Record
Time

3

2

4

Passcode List

ICM
Confirmation

Option Setting
List

Remote Code
On A.M. Failure

Page Save

Override Code
Anti Junk Fax
Number List

Box Passcode
Transfer
Telephone
Number

Pseudo Ringing
Duration

Time Save
Fax Signal Receive

Answering
Machine
Program List

Remote Reception
Select

Message List

Note: Steps which are optional are enclosed in a dotted frame:
Transmitting documents
Normal Dialing

Load
document

Lift handset
or
press SPEAKER

RESOLUTION

Dial (press
numeric keys)

START/MEMORY

Wait for
reception tone

Direct Keypad
Dialing

Hang up
START/MEMORY

Load
document

RESOLUTION

Dial (press
numeric keys)

Load
document

RESOLUTION

Press Rapid
key

Load
document

RESOLUTION

SPEED DIAL

Load
document

RESOLUTION

REDIAL

Rapid Key Dialing

Speed Dialing

Redialing

Enter Speed Dial
number (press 2
numeric keys)

START/MEMORY

START/MEMORY

Wait for
reception tone

Using the answering machine
Recording an
outgoing message

FUNCTION

0
START/MEMORY

Listening to
received messages

Erasing received
messages

PLAY/SKIP

Press a number key
to select a box:
"0": General Box
"1": Box 1
"2": Box 2
"3": Box 3
"4": Transfer outgoing
message

For a personal
box, enter the box
number

General messages
(no passcode):
Hold down DELETE
key for 2 seconds.

Pick up the handset,
press the
START/MEMORY
key, and then speak
into the handset.

Enter passcode
if necessary

General messages
(passcode needed):
Press DELETE and
enter passcode.

1–7

When finished,
replace the
handset or
press the
STOP key.

General messages:
Press DELETE , enter
box number, and enter
passcode if necessary.

Junk Number Check
Polling

UX-258TH
FO-475TH

2. IC protectors replacement

CHAPTER 2. ADJUSTMENTS

ICPs (IC Protectors) are installed to protect the motor driver circuit.
ICPs protect various ICs and electronic circuits from an overcurrent condition.

[1] Adjustments

The location of ICPs are shown below:

General
Since the following adjustments and settings are provided for this model,
make adjustments and/or setup as necessary.

CNPW

CNLIUA

1. Adjustments

FU100

Adjustments of output voltage (FACTORY ONLY)
CONTROL PWB
(TOP SIDE)

1. Install the power supply unit in the machine.
2. Set the recording paper and document.
3. When the document is loaded, power is supplied to the output lines.
Confirm that outputs are within the limits below.

(1) FU100 (ICP-S07) is installed in order to protect IC’s from an overcurrent generated in the motor drive circuit. If FU100 is open, replace
it with a new one.

Output voltage settings

3. Settings

POWER SUPPLY PWB

TEL/LIU PWB

(1) Dial mode selector
CNLIU

CN2

DIAL mode (Soft Switch No. SWB4 DATA No. 3)
(step 1) Select "OPTION SETTING".

CNLIUA

CNPW

CONTROL PWB

KEY :

FUNCTION

4

DISPLAY:

OPTION SETTING

PRESS

(step 2) Select "DIAL MODE".

Output
+5V
+24V

Voltage limits
4.75V ∼ 5.25V
23.3V ∼ 24.7V

Connector
No.
Pin No.
1
2
3
4
5
6
7
8
9
10

CNPW

KEY:

#

DISPLAY:

DIAL MODE

#

#

#

#

#

#

#

#

OR #
Cursor
When initially registering,
the mode shows 1=TONE.
When registering again, the
mode which was registered
formerly is shown.

1=TONE, 2=PULSE

(step 3) Select, using "1" or "2".

DG
+5V
VTH-ON
MG
MG
MG
+24V
VTH
VTH
VTH

KEY:

1

DISPLAY:

TONE SELECTED

KEY:

2

DISPLAY:

PULSE SELECTED

(step 4) End, using the "STOP" key.
KEY:

STOP

4. Method of release of starting lock up by Battery
Reset
(1) Summary
There is a possibility of release of the lock up by reset the signal BATRST
of CPU (FC100), if it lock up when you turn on the power of the set in
UX-258 series. We inform you of the method of release.

(2) Contents
When you turn on the power of the set without EPROM by your mistake,
if you turn off the power after, turn on the power with EPROM again, the
set don’t start.
In this case, before you judge the cpu (FC100) is wrong, you need to
confirm the release of the lock up by reset the signal BATRST. and
unknown origin in the same way.
Method of the reset of signal BATRST
Short the between leads of the capacitor C5 on the control PWB,
X2961-81 in the state of POWER OFF.

2–1

UX-258TH
FO-475TH

[2] Diagnostics and service soft switch
1. Operating procedure
(1) Entering the diagnostic mode
Press FUNC → 9 →
ROM Ver. FKD0

→ 8 → # → 7 , and the following display will appear.
After 2 sec: DIAG MODE

FKD0
Then press the START key. Select the desired item with the

key or the # key or select with the rapid key. Enter the mode with the START key.

(Diag•specifications)

FUNC

9

8

FKD0

7

DIAG MODE

START

Soft switch mode

START

1

START Flash memory clear

ROM & RAM check

START

2

START Flash memory check

Aging mode

START

3

START

Entry data receive

Panel key test

START

4

START

Entry data send

Check pattern mode

START

5

10

START

Auto feeder mode

Signal send mode

START

6

9

START

All black mode

Memory clear mode

START

7

8

START

Shading mode

If the diag mode cannot be set, repeat the diag mode operation, performing the following operation.
After the power is turned on and "ESPERE POR FAVOR" is indicated,
press the STOP key.
START
KEY

STOP
KEY
"Power ON" +

+

In relation with the process response (request from Production
Engineering) "ESPERE POR FAVOR" clock indication may
appear depending on STOP key timing. If the STOP key is
held down, "MEMORY CLEAR?" appears.

Memory clear
(Work + Backup)

2. Diagnostic items
ITEM

DIRECT

No.

key

1

1

SOFT SWITCH MODE

Soft switches are displayed and changed. List can be output.

2

2

ROM & RAM CHECK

ROM is sum-checked, and RAM is matched. Result list is output.

3

3

AGING MODE

10 sheets of check patterns are output every 5 minutes per sheet.

4

4

PANEL KEY TEST

Panel keys are tested. Result list is output.

5

5

CHECK PATTERN MODE Check pattern is output.

6

6

SIGNAL SEND MODE

7

7

MEMORY CLEAR MODE Back-up memory is cleared, and is set at delivery.

8

8

SHADING MODE

Shading compensation is performed in this mode.

Contents

Function

Various signals of FAX communication are output.

9

9

ALL BLACK MODE

To check the print head, whole dots are printed over the interval of 2 m.

10

10

AUTO FEEDER MODE

Insertion and discharge of document are tested.

11

−

ENTRY DATA SEND

Registered content is sent.

12

−

ENTRY DATA RECEIVE Registered content is received, and its list is output.

13

−

FLASH MEMORY CHECK Flash memory is checked.

14

−

FLASH MEMORY CLEAR

Data of flash memory is cleared.

2–2

UX-258TH
FO-475TH

3. Diagnostic items description
3. 1. Soft switch mode

3. 6. Signal send mode
The mode is used to send various signals to the circuit during FAX communication. Every push of START key sends a signal in the following
sequence. Moreover, the signal sound is also output to the speaker when
the line monitor of the soft switch is on.

Used to change the soft switch settings.
The soft switch which is stored internally is set by using the keys.
The available soft switches are SW-A1 to SW-L2.

[1] No signal (CML signal turned on)

The content of soft switches is shown in page 2-5 to 2-16.

[2] 9600bps

The contents are set to factory default settings.

[3] 7200bps
[4] 4800bps

3. 2. ROM & RAM check

[5] 2400bps

ROM executes the sum check, and RAM executes the matching test.
The result will be notified with the number of short sounds of the buzzer
as well as by printing the ROM & RAM check list.
Number of short sounds of buzzer 0 → No error
1 → ROM error
2 → RAM error (32Kbyte)

[6] 300bps (FLAG)
[7] 2100Hz (CED)
[8] 1100Hz (CNG)
[9] END

3. 3. Aging mode

3. 7. Memory clear mode

If any document is first present, copying will be executed sheet by sheet.
If no document is present, the check pattern will be printed sheet by
sheet. This operation will be executed at a rate of one sheet per 5minutes, and will be ended at a total of 10 sheets.

This mode is used to clear the backup memory and reset to the default
settings.

3. 4. Panel key test

The mode is used for the shooting compensation. For reading, set up
the special original paper.

3. 8. Shading mode

The mode is used to check whether each key operates properly
or not. Press the key on the operation panel, and the key will be displayed on the display. Therefore, press all keys. At this time, finally press
the STOP key.

The shooting compensation memorizes the reference data of white and
black for reading.
Moreover, the memorized data is not erased even if memory clear mode
is executed.

When the STOP key is pressed, the keys which are not judged as
"pressed" will be printed on the result list.
•

3. 9. All black mode

LED port of the contact image sensor (CIS) is kept on during the
term from when start of the panel test mode to end with the STOP
key.

The mode is used to check the state of the printing head and intentionally overheat it. Whole dots are printed over the interval of 2 m. If it is
overheated or the printing sheet is jammed, press STOP key for the end.

3. 5. Check pattern mode

3. 10. Auto feeder mode

This mode is used to check the status of print head. Two sheets of check
pattern are printed. The following information of check pattern is printed.

1 Vertical stripes (alternate white and black lines)
2 Full black
3 Full white

In this mode, a document is inserted and discharged to check the auto
feed function.

Approx. 35 mm

After this mode is started, set a document, and the document feed will
be automatically tested.

Approx. 70 mm
Approx. 35 mm

3. 11. Entry data send
The mode is used to send the registered data to the other machine and
make the other machine copy the registered content.

1

Before sending in this mode, it is necessary to set the other machine at
the entry data receive mode.
The sent content is as follows. After printing is completed, the following
lists are printed.
1. Telephone list data

2

2. Sender register data
3. Optional setting content
4. Soft switch content
5. Junk fax number list

3

6. Timer reservation data (only on the model which timer reservation is possible)

RANK 0 or 1

Note:
There is a selection RANK 0 or 1 depending on resistance value of the
thermal head. RANK 0 or RANK 1 is printed at the tail of check pattern
to identify.

7. Recording setting list data

2–3

UX-258TH
FO-475TH

3. 12. Entry data receive

3. 13. Flash memory check

In this mode, the registered data sent from the other machine are received and the received data are registered in the own machine. When
this mode is used for receiving, the other machine must be in the entry
data send mode.

Data writing/read of flash memory is checked, and the result (OK/NG) is
printed.

3. 14. Flash memory clear

After receiving is completed, the following lists are printed.

All data of flash memory is cleared.
The result of clear (OK/NG) is printed.

1. Telephone list data
2. Sender register data (The passcode No. is also printed if the poling
function is provided.)
3. Optional setting list
4. Soft switch content
5. Junk fax number list
6. Timer reservation list (only model which timer communication is
possible)
7. Recording setting list data

4. How to make soft switch setting
To enter the soft switch mode, make the following key entries in sequence.

Press FUNCTION

DATA No.

9

8

7

START

START

1 2 3 4 5 6 7 8

S F T SW-A1 = 0 0 0 0 0 0 0 0
Press FUNCTION key.

S F T SW-A1 = 1 0 0 0 0 0 0 0
Press

key.

Press

key.

S F T SW-A1 = 1 0 0 0 0 0 0 0
S F T SW-A1 = 1 0 0 0 0 0 0 0
Bit1 - 8 are set.

S F T SW-A1 = 1 0 0 0 0 0 0 0
Press START key during setting.

S F T SW-A2 = 0 0 0 0 0 0 0 0
Soft SW-A2 - SW-L2 are set.

S F T SW-L2 = 0 0 0 0 0 0 0 0
To finish the settings halfway between
SW-A1 and SW-L2, press the STOP
key. In this case, the setting being done
to the SW No. on display will be nullified
while settings done to the preceding
SW Nos. remain in effect.
When the COPY key is pressed, the
contents of soft switches are printed.

The soft switch mode is terminated.
2–4

UX-258TH
FO-475TH

5. Soft switch description
• Soft switch
SW
NO.

SW
l
A1

DATA
NO.

Switch setting and function

ITEM

1

1

Protect from echo

No

Yes

0

2

Forced 4800 BPS reception

Yes

No

0

3

Footer print

Yes

No

0

4

Length limitation of copy/send/receive

No limit

Copy/send: 60cm

0

5

CSI transmission

No transmitted

Transmitted

0

6

DIS receive acknowledgement during G3
transmission

Twice

NSF: Once
DIS: Twice

0

7

Non-modulated carrier for V29 transmission
modem

Yes

No

0

EOL detect timer

25 s

13 s

Modem speed

SW
l
A3

V.27 ter

9600bps

7200bps

4800bps

2400bps

1

No. 1

0

0

0

0

0

2

No. 2

0

0

0

0

0

3

No. 3

0

1

1

0

0

4

No. 4

1

1

0

0

1

5
6

Sender’s information transmit
H2 mode

No
No

Yes
Yes

0
0

7

Communication error treatment in RTN
sending mode (reception)

No communication error

Communication error

0

8

CNG transmission
CED tone signal interval

No
1000ms

Yes
750ms

500ms

75ms

0

1

No. 1

1

1

0

0

0

2

No. 2

1

0

1

0

0

3

MR coding

4

Reserved

No

Yes

0

5

Reserved

0

6

Reserved

0

7

Reserved

0

8

Reserved

0

1

Signal transmission level
No. =

0

Binary input

0

16 8 4 2 1

0

1
0

1
0

3
4

2 3 4 5
0 1 0 0 (-8 dBm)

5

0

6

Protocol monitor (error print)

Printed at com. err

Not printed

0

7

Protocol monitor

Yes

No

0

8

Line monitor

Yes

No

Digital line equalization setting (Reception)

SW
l
A5

0

V.29

2
SW
l
A4

Remarks

Receive: 1.5m

8

SW
l
A2

Initial
setting

0

0

7.2km

0km

1

No. 1

1

0

1

2

No. 2

1

0

1

3
4

Reserved
Reserved

0
0

5

Reserved

0

6

Reserved

0

7
8

Error criterion
Anti junk fax check

10 ~ 20 %
Yes

2–5

5 ~ 10 %
No

0
0

OPTION

UX-258TH
FO-475TH
SW
NO.

SW
l
A6

DATA
NO.

Switch setting and function

ITEM

1

0

Initial
setting

1

Auto gain control (MODEM)

Enable

Disable

2

End Buzzer

Yes

No

1

3

Disconnect the line when DIS is received in
RX mode

No

Yes

1

4
5

Equalizer freeze control (MODEM)
Equalizer freeze control 7200 BPS only

On
No

Off
Yes

0
0

6
7

CNG transmission in manual TX mode
Initial compression scheme for sharp fax in

Yes
MR mode

No
H2 mode

1
0

Remarks

1

TX mode
8

Reserved

1

Recall interval

0

2
SW
l
B1

No. =

3
4
5

Recall times

6

No. =

7
8

SW
l
B2

SW
l
B3

SW
l
B4

0

2

1

1

1 2
0 1

3
0

4
1 (5 x 60 sec = 5 min)

0
1

Binary input

0

8

4

2

1

0

5
0

6
0

7
1

8
0 (Twice)

1
0

1

Dial pausing (sec/pause)

2

Reserved

3

Reserved

4
5

Busy tone detection (after auto dial)
Waiting time after dialing

6
7

Reserved
Reserved

0
0

8
1

Reserved
Reserved

0
0

2
3

Reserved
Reserved

0
0

4

Reserved

0

5

Reserved

0

6

Reserved

0

7

Reserved

0

8

Hold function

Enable

Disable

1

1

Auto Dial Mode Delay timer of before line
connect

3 sec

0 sec

1

2

Auto Dial Mode Delay timer of after line
connect

3.6 sec

3 sec

0

3
4

Dial mode
Pulse → Tone change function by

Tone
Enable

Pulse
Disable

1
1

5

Dial pulse make/break ratio (%)

40/60

33/67

6
7

Reserved
Reserved

0
0

8

Reserved

0

1

DTMF signal transmission level (Low)

2
3
SW
l
B5

Binary input
8 4

4 sec

2 sec

OPTION

OPTION

0
0
0

No
90 sec

key

Yes
45 sec

No. =

1
0

1

Binary input

0

16 8 4 2 1
1 2 3 4 5

1
0

4

0

5

1 0 1 0 (0.5 x 12 = -6 dBm)

1
0

6
7

Reserved
Reserved

0
0

8

Reserved

0

2–6

OPTION

UX-258TH
FO-475TH
SW
NO.

DATA
NO.
1

Switch setting and function

ITEM

1

DTMF signal transmission level (High)

2
SW
l
B6

No. =

Binary input

0

16 8 4 2 1

0

3
4

1 2 3 4 5
0 0 1 1 0 (0.5 x 7 = -3.5 dBm)

0

6

Reserved

0

7
8

Reserved
Reserved

0
0
Factory

Light

Dark

setting
No. 1

0

1

0

1

0

2

No. 2

0
Factory

0
Light

1
Dark

1
Darker in

0

setting
3
4

0

1

0

1

0

No. 4

0

0

1

1

0

5
6

Line density selection
Reserved

Fine

Standard

0
0

7
8

MTF correction in half tone mode
Reserved

No

Yes

0
0

1

Number of rings for auto receive

Binary input

0

8

4

2

1

0

3

1

2

3

4

0

4

0

0

0

1 (4 times)

1

No. =

5

Automatic switching manual to auto receive
mode

6

Reserved

0

7
8

Reserved
Reserved

0
0

1
2

Reserved
Reserved

0
0

3

Reserved

0

4
5

Reserved
Reserved

0
0

Reception after 5 rings

CI off detection timer (Distinctive ring
6

setting off only)

7
8
1

Reserved
Tel/Fax Automatic switching mode

2

switching mode

3
4

Number of CNG signal detection at the

No reception

0

1200ms

1000ms

700ms

350ms

No. 6

0

1

0

1

No. 7

0

0

1

1

Enable
15sec

60sec

30sec

120sec

OPTION

0

0

1

1

0

0

1

0

1

0

3 sec

5 sec

1

phone/fax automatic switching mode
5

CNG detect time at TEL/FAX mode

6
7

Reserved
Reserved

0
0

8

Reserved

0

2–7

OPTION

1

No. 3

Once

OPTION

0

No. 2
Twice

OPTION

0
0

Disable

Pseudo ringing time at phone/fax automatic

SW
l
E1

dark mode

No. 3

2

SW
l
D2

Darker in
dark mode

1
Reading slice (Half tone)

SW
l
D1

Remarks

1
1

5

Reading slice (Binary)

SW
l
C1

Initial
setting

0

0

UX-258TH
FO-475TH
SW
NO.

Switch setting and function

DATA
NO.

ITEM

1

Pseudo ringer sound output level to the line

1
Binary input

0

8

4

2

1

1

3

1

2

3

4

0

4

0

1

0

1 (-5 dBm -5 = -10 dBm)

1

2
SW
l
E2

No. =

5

Reserved

0

6

Reserved

0

7

Reserved

0

8

Reserved

0

SW
l
G2

SW
l
G3

80ms

100ms

120ms

No. 1

0

0

1

1

0

2
3

No. 2

0

0

1

Protection of remote reception (5

1
No

0
0

4

Remote reception with GE telephone

5

Remote operation code figures by external

6

TEL (0~9)

) detect Yes
Compatible

Not compatible
Binary input

0

4

2

1

1

7

5

6

7

8

8

0

1

0

1 (5

CNG detection in STAND-BY mode

Yes

1
1

1pulse

2pulses

3pulses

4pulses

2

No. 2

0

0

1

1

0

3

No. 3

0

1

0

1

1

1pulse

2pulses

3pulses

4pulses

4

No. 4

0

0

1

1

0

5
6

No. 5

0

0

1

Fax signal detection after telephone mode dial

1
No

1
0

7

Reserved

0

8

Reserved

0

1

Reserved

0

2
3

Reserved
Reserved

0
0

4

Reserved

0

5
6

Reserved
Reserved

0
0

7

Reserved

0

8
1

Reserved
Reserved

0
0

2

Reserved

0

3

Reserved

0

4

Reserved

0

5
6

Reserved
Reserved

0
0

7

Reserved

0

8

Reserved

0

1

Reserved

0

2

Reserved

0

3

Reserved

0

4

Reserved

0

5

Reserved

0

6
7

Reserved
Reserved

0
0

8

Reserved

0

Yes

2–8

OPTION

0
)
No

Number of CNG (STAND-BY mode)

OPTION

1

8

No. =

Number of CNG detect (AM mode)

SW
l
G1

50ms

1

1

SW
l
F2

Remarks

(-5 ~ -20 dBm setting)

DTMF detection time

SW
l
F1

Initial
setting

0

OPTION

UX-258TH
FO-475TH
SW
NO.

SW
l
H1

DATA
NO.

Switch setting and function

ITEM

1

Initial
setting

0

1

Busy tone detection ON/OFF time (Lower
duration)

350ms

150ms

0

2

Busy tone detection ON/OFF time (Upper
duration)

650ms

900ms

0

3

Reserved

4

Busy tone continuous sound detect time

5s

10s

1

5

Busy tone detect continuation sound detect

No

Yes

0

6

during OGM
Busy tone detect continuation sound detect

No

Yes

0

No

Yes

0

No

Yes

0

Remarks

0

during ICM
7

Busy tone detect intermittent sound detect
during OGM

8

Busy tone detect intermittent sound detect
during ICM
Busy tone detection pulse number

SW
l
H2

4pulses

6pulses

10pulses

1

No. 1

0

0

1

1

2

No. 2

0

1

0

1

0
1

3

Fax switching when A.M. full

Yes

No

0

4

Busy tone detect continuation sound detect

320 - 570 Hz

320 - 460 Hz

0

5

Reserved

0

6

Reserved

0

7

Reserved

0

8

Reserved

0

1

No. 1

2

No. 2
A.M. quiet time 1

4min

15s

30s

60s

0

0

1

1

0
0

0

1

0

1

2S

3s

4s

5s

OPTION

3

No. 3

0

0

1

1

0

4

No. 4

0
0s

1
1s

0
2s

1
3s

0

5

No. 5

0

0

1

1

1

6
7

No. 6

0

1
Off

0

1

0
0

A.M. quiet time 2

Key input buzzer on/off switch (Two way

On

recording mode)
8

Reserved

1

A.M. quiet detect time

0

2
SW
l
I2

OPTION

frequency

ICM recording time

SW
l
I1

2pulses

No. =

Binary input

0

16 8 4 2 1

0

3

1 2 3 4 5

1

4
5

0 0 1 1 0 (6 sec)

1
0

6

Reserved

7

Reserved

8

Alarm during two way recording

0
0
Yes

No

2–9

0

UX-258TH
FO-475TH
SW
NO.

SW
l
I3

SW
l
I4

DATA
NO.

Switch setting and function

ITEM

1

1

Max OGM record time

2

Reserved

15s

60s

3

Two way record function

Disable

Enable

0

4

Toll saver

Disable

Enable

0

5

Reserved

0

6

Reserved

0

7

BOX selection to record ICM

2 digits DTMF

1digit DTMF

0

8

Transfer did recall

Disable

Enable

0

1
2

AGC maximum gain (line)
(10 ~ 25 dBm )

No. =

Binary input
8 4 2 1
1 2 3 4

0

AGC maximum gain (Mic)

1 1 0 1 (23 dB)
Binary input

1
0

6

(10 ~ 25 dBm )

No. =

AGC eref access code (line)
(-0 ~ -30 dBm with 2 dBm step)

No. =

4
5
6

8 4 2 1

0

5 6 7 8
0 0 1 0

1
0

No. =

0

8 4 2 1
1 2 3 4

1
1
1
1
0

5 6 7 8

0

8
1

AGC again adaptation threshold (line)

1 0 0 1 (-18 dB)
Binary input

1
1

2

(-40 ~ -70 dBm with 2 dBm step)

8 4 2 1

1

No. =

3
4

1 2 3 4
1 1 1 1

5

AGC again adaptation threshold (Mic)

6
7

(-40 ~ -70 dBm with 2 dBm step)

No. =

1
1

(-70 dB)

Binary input

0

8 4 2 1
5 6 7 8

1
0

0 1 0 1

(-50 dB)

Slow
0

Normal
0

Little fast
1

Fast
1

AGC slew rate (line)

1

1

No. 1

2

No. 2

0
Slow

1
Normal

0
Little fast

1
Fast

1

No. 3

0

0

1

1

1

0

1
Enable

0

1

1
0

AGC slew rate (Mic)
3
4
5

FAX BOX function

No. 4
Disable

6

Frequency of voice detection after

800 Hz ~ 1400 Hz

REMINDER dialing
Voice detection time after REMINDER dialing

SW
l
J1

(-14 dB)

Binary input
8 4 2 1

7

8

SW
l
I7

(12 dB)

Binary input

0 1 1 1
AGC eref access code (Mic)
(-0 ~ -30 dBm with 2 dBm step)

OPTION

1
1

4
5

2
3

SW
l
I6

0

3

1

Remarks

0

7
8

SW
l
I5

Initial
setting

0

800 Hz ~ 1200 Hz

0

OPTION

0

100ms

200ms

300ms

400ms

7

No. 7

0

0

1

1

8

No. 8

0

1

0

1

0
0

1

Reserved

0

2

Reserved

3

Sender’s phone number setting

4
5

Reserved
Reserved

0
0

6

Reserved

0

0
Cannot change

Ringer volume

Change allowed

0

7

No. 7

Off
0

Low
0

Middle
1

High
1

1

8

No. 8

0

1

0

1

0

2 – 10

OPTION

UX-258TH
FO-475TH
SW
NO.

SW
l
J2

DATA
NO.

Switch setting and function

ITEM

1

Reserved

2

Reserved

3

Polling key

4

Reserved

5

Reserved

1

0
Yes

2

Reserved

3

Communication results printout
(Transaction report)

0

Very Low

Low

Middle

High Very High

No. 6
No. 7

0
0

0
0

0
1

0
1

1
0

No. 8

0

1

0

1

0

OPTION
0
1
0
0
0

No. 3

4

Error/Timer Send only
0
0

No. 4

0

1

Always
1

No print
1

0

1

OPTION
0
0

5
6

Reserved
Reserved

0
0

7

Reserved

0

8
1

Reserved
Entering DIAG mode by pressing SPEED

2

Reserved

0

3

Reserved

0

4

Reserved

0

5

Reserved

0

6

Reserved

0

7

Reserved

0

8

Reserved

Yes

No

0
0

key

SW
l
K1

0

OGM / ICM output level
1
SW
l
L1

SW
l
L2

OPTION

0

8

SW
l
J3

NO

0

6
7
Reserved

Remarks

0

Speaker volume (5 stages)

1

Initial
setting

0

Binary input
No. =

16 8 4 2 1

2
3

1 2 3 4 5
1 0 0 0 1 (-17 dBm)

1
0
0

4

0

5

1

6

Reserved

0

7
8

Reserved
Reserved

0
0

1

Reserved

0

2

Reserved

0

3

Reserved

0

4

Reserved

0

5
6

Reserved
Reserved

0
0

7

Reserved

0

8

Reserved

0

2 – 11

UX-258TH
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• Soft switch function description

SW-A2 No. 7 Communication error treatment in RTN sending mode
(Reception)

SW-A1 No. 1 Protect from echo

Used to determine communication error treatment when RTN is sent by
occurrence of a received image error in G3 reception. When it is set to
"1", communication error is judged as no error.

Used to protect from echo in reception.
SW-A1 No. 2 Forced 4800BPS reception

SW-A2 No. 8 CNG transmission

When line conditions warrant that receptions take place at 4800 BPS
repeatedly.

When set to "0" , this model allows CNG transmission by pressing the
Start key in the key pad dialing mode. When set to "1", CNG transmission in the key pad dialing mode cannot be performed. In either case,
CNG transmission can be performed in the auto dial mode.

It may improve the success of receptions by setting at 4800BPS.
This improve the receiving document quality and reduces handshake
time due to fallback during training.

SW-A3 No. 1, No. 2 CED tone signal interval

SW-A1 No. 3 Footer print

For international communication, the 2100Hz CED tone may act as an
echo suppression switch, causing a communication problem.

When set to "1", the date of reception, the sender machine No., and the
page No. are automatically recorded at the end of reception.

Though SW-A3 No. 1 and No. 2 are normally set to 0, it should be changed
this time between the CED tone signal to eliminate the communication
problem caused by echo.

SW-A1 No. 4 Length limitation of copy/send/receive
Used to set the maximum page length.

TX

To avoid possible paper jam, the page length is normally limited to 0.6
meter for copy or transmit, and 1.5 meters for receive.

RX
CED

It is possible to set it to "No limit" to transmit a long document, such as a
computer print form, etc. (In this case, the receiver must also be set to
no limit.)

T
DIS

SW-A1 No. 5 CSI transmission
(CSI TRANSMISSION) is a switch to set whether the machine sends or
does not send the signal (CSI signal) informing its own telephone No. to
the remote fax. machine when information is received. When
"nonsending" is set, the telephone No. is not output on the remote transmitting machine if the remote transmitting machine has the function to
display or print the telephone No. of receiving machine, using this CSI
signal.

SW-A3 No. 3 MR Coding
Used to select the MR coding enable or disable.
SW-A3 No. 4 ~ No. 8 Reserved
Set to "0".
SW-A4 No. 1 ~ No. 5 Signal transmission level

SW-A1 No. 6 DIS receive acknowledgment during G3 transmission

Used to control the signal transmission level in the range of-0dB to31dB.

Used to make a choice of whether reception of DIS (NSF) is acknowledged after receiving two DISs (NSFs) or receiving one DIS (two NSFs).
It may be useful for overseas communication to avoid an echo suppression problem, if set to 1.

The factory setting is at -8dB (MODEM output).
SW-A4 No. 6 Protocol monitor (Error print)
If set to "1", protocol is printed at communication error.

SW-A1 No. 7 Non-modulated carrier for V29 transmission modem

SW-A4 No. 7 Protocol monitor

Though transmission of a non-modulated carrier is not required for transmission by the V29 modem according to the CCITT recommendation, it
may be permitted to a send non-modulated carrier before the image
signal to avoid and echo suppression problem. It may be useful for overseas communication to avoid an echo suppression problem, if set to 1.

Normally set to "0". If set to "1", communication can be checked, in case
of troubles, without using a G3 tester or other tools.
When communication FSK data transmission or reception is made, the
data is taken into the buffer. When communication is finished, the data is
analyzed and printed out. When data is received with the line monitor
(SW-A4 No. 8) set to "1" the reception level is also printed out.

SW-A1 No. 8 EOL (End Of Line) detect timer
Used to make a choice of whether to use the 25-second or 13-second
timer for detection of EOL.
This is effective to override communication failures with some facsimile
models that have longer EOL detection.

SW-A4 No. 8 Line monitor
Normally set to "0". If set to "1", the transmission speed and the reception level are displayed on the LCD. Used for line tests.

SW-A2 No. 1 ~ No. 4 Modem speed

SW-A5 No. 1, No. 2 Digital line equalization setting (Reception)

Used to set determine the initial modem speed. The default is 9600BPS.
It may be necessary to program it to a slower speed when frequent line
fallback is encountered, in order to save the time required for fallback
procedure.

Line equalization when reception is to be set according to the line characteristics.
Setting should be made according to distance between the telephone
and the telephone company central switching station.

SW-A2 No. 5 Sender’s information transmit

SW-A5 No. 3 ~ No. 6 Reserved

(SENDER’S INFORMATION TRANSMISSION) is a switch to set the
function to print the content of HEADER PRINT described in the passcode
list at the front end of receiver’s original when original is sent to the
remote machine.

Set to "0".
SW-A5 No. 7 Error criterion
Used to select error criterion for sending back RTN when receiving image data.

If this switch is set to "NO", the HEADER PRINT is not output at the
receiving machine.

SW-A5 No. 8 Anti junk fax check

SW-A2 No. 6 H2 mode

When use the Anti junk fax function, set to "1".

Used to determine reception of H2 mode (15 sec transmission mode).
When set to OFF, H2 mode reception is inhibited even though the transmitting machine has H2 mode function.

SW-A6 No. 1 Auto gain control (MODEM)
When this mode is enabled, if the reception signal level is under 31dBm.
The modem itself controls the signal gain automatically.

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UX-258TH
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SW-A6 No. 2 End buzzer

SW-B4 No. 2 Auto dial mode Delay timer of after line connect

Setting this bit to 0 will disable the end buzzer (including the error buzzer/
on-hook buzzer).

Delay time between the line connection and dial data output under the
auto dial mode.
DIAL DATA

SW-A6 No. 3 Disconnect the line when DIS is received in RX mode

RAPID01

CML RELAY ON

Bit1= 0: When DIS signal is received during RX mode, disconnected the
line is immediately.
Bit1= 1: When DIS signal is received during RX mode, wait the next
signal.

0 : 3 sec
1 : 3.6 sec

SW-B4 No. 3 Dial mode

SW-A6 No. 4 Equalizer freeze control (MODEM)

When using the pulse dial, set to 0. When using the tone dial, set to 1.
SW-B4 No. 4 Pulse → Tone change function by
key
When setting to 1, the mode is changed by pressing the key from the
pulse dial mode to the tone dial mode.

This switch is used to perform reception operation by fixing the equalizer control of modem for the line which is always in unfavorable state
and picture cannot be received.
* Usually, the control is executed according to the state of line where
the equalizer setting is changed always.

SW-B4 No. 5 Dial pulse make/break ratio (%)
When using the 33 % make ratio pulse dial, set to "0".
When using the 40 % make ratio pulse dial, set to "1".

SW-A6 No. 5 Equalizer freeze control 7200BPS only
Setting which specifies SW-A3 No. 6 control only in the condition of
7200BPS modem speed.

SW-B4 No. 6 ~ No. 8 Reserved

SW-A6 No. 6 CNG transmission in manual TX mode

Set to "0".

When set to "1", fax transmit the CNG signal in case of manual transmission mode (User press the START key after waiting the fax answering signal from handset or speaker).

SW-B5 No. 1 ~ No. 5 DTMF signal transmission level (Low)
The transmission level of DTMF signal is adjusted. (lower frequency)
00000: 0dBm

SW-A6 No. 7 Initial compression scheme for sharp fax in TX mode

↓

When set to "0", if the other fax is Sharp model, fax transmit the document by H2 mode. When set to "1", even if the other fax is Sharp model,
fax transmit the document by MR mode.

11111: -15.5dBm (-0.5dBm x 31)
SW-B5 No. 6 ~ No. 8 Reserved

SW-A6 No. 8 Reserved

Set to "0".

Set to "0".

SW-B6 No. 1 ~ No. 5 DTMF signal transmission level (High)

SW-B1 No. 1 ~ No. 4 Recall interval

The transmission level of DTMF signal is adjusted. (higher frequency)

Choice is made for a redial interval for speed and rapid dial calls.
Used a binary number to program this. If set to 0 accidentally, 1 will be
assumed.

00000: 0dBm

SW-B1 No. 5 ~ No. 8 Recall times

11111: -15.5 dBm (-0.5dBm x 31)

↓

Choice is made as to how many redials should be.

SW-B6 No. 6 ~ No. 8 Reserved

SW-B2 No. 1 Dialing pause (sec/pause)

Set to "0".

Pauses can be inserted between telephone numbers of direct dial connection. Selection of 4 sec or 2 sec pause is available.

SW-C1 No. 1, No. 2 Reading slice (Binary)

SW-B2 No. 2, No. 3 Reserved

Used to determine the set value of reading density in standard/fine mode.
The standard setting is "00" (Factory setting is "00")

Set to "0".

SW-C1 No. 3, No. 4 Reading slice (Half tone)

SW-B2 No. 4 Busy tone detection (after auto dial)

Used to determine the set value of reading density in half tone mode.
The standard setting is "00" (Factory setting is "00")

Used to set YES/NO of busy tone detection after auto dialing.

SW-C1 No. 5 Line density selection

SW-B2 No. 5 Waiting time after dialing

Used to set the transmission mode which is automatically selected when
the Resolution key is not pressed. In the copy mode, however, the fine
mode is automatically selected unless the Resolution key is manually
set to another mode.

This is waiting time for the opponent’s signals after dialing.
When set to "0", waiting time is 45 sec.
When set to "1", waiting time is 90 sec.

SW-C1 No. 6 Reserved

SW-B2 No. 6 ~ No. 8 Reserved

Set to "0".

Set to "0".

SW-C1 No. 7 MTF correction in half tone mode

SW-B3 No. 1 ~ No. 7 Reserved

This allows selection of MTF correction (dimness correction) in the half
tone mode.
When "NO" (=1) is selected, the whole image becomes soft and mild.
On the contrary, however, clearness of characters will be reduced. Normally set to "YES" (=0).

Set to "0".
SW-B3 No. 8 Hold function
Used to set YES/NO of holding function by the HOLD key.
SW-B4 No. 1 Auto dial mode Delay timer of before line connect

SW-C1 No. 8 Reserved

Delay time between the dial key input and line connection under the
auto dial mode.
RAPID01

Set to "0".

CML RELAY ON
DIALLING

0 : 0sec
1 : 3sec

2 – 13

UX-258TH
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SW-D1 No. 1 ~ No. 4 Number of rings for auto receive

SW-F1 No. 3 Protection of remote reception (5

When the machine is set in the auto receive mode, the number of rings
before answering can be selected. It may be set from one to nine rings
using a binary number. Since the facsimile telephone could be used as
an ordinary telephone if the handset is taken off the hook, it should be
programmed to the user’s choice. If the soft switch was set to 1, direct
connection is made to the facsimile. If a facsimile calling beep was heard
when the handset is taken off the hook, press the START key and put
the handset on the hook to have the facsimile start receiving. If it was
set to 0 accidentally, receive ring is set to 1.
NOTE: If the machine is set to answer after a large number of rings, it
may not be able to receive faxes successfully. If you have difficulty receiving faxes, reduce the number of rings to a maximum
of 5.

Used to set the function of remote reception (5
the remote reception function is disabled.

) detect
). When set to "1",

SW-F1 No. 4 Remote reception with GE telephone
(Corresponding to TEL made by GE) P. B. X.
"1": Compatible with TEL mode by GE
"0": Not compatible

SW-D1 No. 5 Automatic switching manual to auto receive mode
This soft switch is used to select whether the machine should switch to
the auto receive mode after 5 rings in the manual receive mode or remain in the same way as SW-D1 No. 1, No. 2, No. 3 and No. 4 "0"1"0"1"(5
rings).

•

When sending (5
) for remote reception with a GE manufactured telephone remote reception may not take place because of
special specifications in their DTMF.
To overcome this, a soft SW is provided to change the modem setting to allow for remote reception.

•

If this soft SW is set to "1", other telephone sets may be adversely
affected.

SW-F1 No. 5 ~ No. 8 Remote operation code figures by external
TEL (0 ~ 9)
Remote operation codes can be changes from 0 through 9. If set to
greater than 9, it defaults to 9. The "5
" is not changed.
Ex-7
(Default: 5
)

SW-D1 No. 6 ~ No. 8 Reserved
Set to "0".
SW-D2 No. 1 ~ No. 5 Reserved

SW-F2 No. 1 CNG detection in STAND-BY mode

Set to "0".

When setting to "1", the CNG signal detection function during standby
stops.

SW-D2 No. 6, No. 7 CI off detection timer (Distinctive ring setting
off only)

SW-F2 No. 2, No. 3 Number of CNG detect (AM mode)

Set the minimum time period of CI signal interruption which affords to be
judged as a CI OFF section.
A

Used for detection of CNG in 1 to 4 pulses.
SW-F2 No. 4, No. 5 Number of CNG (STAND-BY mode)

B

Used for detection of CNG in 1 to 4 pulses.

1

400msec

SW-F2 No. 6 Fax signal detection after telephone mode dial

2

2000msec

When set to "1", if machine detect the fax answering signal after telephone calling (handset off-hook or speaker mode dial), machine start
to receive the documents automatically.

SW-D2 No. 8 Reserved
Set to "0".

SW-F2 No. 7, No. 8 Reserved

SW-E1 No. 1 Tel/Fax Automatic switching mode

Set to "0".

Used to set auto TEL/FAX switching mode or to set the normal fax mode.

SW-G1 No. 1 ~ No. 8 Reserved

SW-E1 No. 2, No. 3 Pseudo ringing time at the phone/fax automatic
switching mode

Set to "0".

Choice is made as to how long to rumble the dummy ringer on TEL/FAX
automatic switching mode.

Set to "0".

SW-G2 No. 1 ~ No. 8 Reserved

SW-E1 No. 4 Number of CNG signal detection at the phone/fax
automatic switching mode

SW-G3 No. 1 ~ No. 8 Reserved

Used for detection of CNG in one tone or two tones in the TEL/FAX
automatic switching mode.

SW-H1 No. 1 Busy tone detection ON/OFF time (Lower duration)

Set to "0".

The initial value of detection is set according to electric condition.

SW-E1 No. 5 CNG detect time at TEL/FAX mode

The set value is changed according to the local switch board. (Erroneous detection of sound is reduced.)

The switch which sets the time from the start of CNG detection to the
end of detection.

Normally the upper limit is set to 900msec, and the lower limit to 150msec.

SW-E1 No. 6 ~ No. 8 Reserved
Set to "0".

If erroneous detection is caused by sound, etc., adjust the detection
range.

SW-E2 No. 1 ~ No. 4 Pseudo ringer sound output level to the line

The lower limit can be set in the range of 350msec to 150msec.

Used to adjust sound volume of pseudo ringer to the line (ring back
tone) generated on selecting TEL/FAX. Setting is the reduce level from
-5 dBm output level.

SW-H1 No. 2 Busy tone detection ON/OFF time (Upper duration)
Similarly to SW-H1 No. 1, the set value can be varied.
The upper limit can be set in the range of 650msec to 900msec.

SW-E2 No. 5 ~ No. 8 Reserved
Set to "0".

SW-H1 No. 1

SW-H1 No. 2

Detection range

SW-F1 No. 1, No. 2 DTMF detect time

0

0

150msec ~ 900msec

Used to set detect time of DTMF (Dual Tone Multi Frequency) used in
remote reception (5
).

0

1

150msec ~ 650msec

1

0

350msec ~ 900msec

The longer the detect time is, the less the error detection is caused by
noises.

1

1

350msec ~ 650msec

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UX-258TH
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SW-H1 No. 3 Reserved

SW-I2 No. 8 Alarm during two way recording

Set to "0".

When set to “1”, alarm sound is given to remote side during two way
recording.

SW-H1 No. 4 Busy tone continuous sound detect time

SW-I3 No. 1 Max OGM record time

Set detecting time busy tone continuous sound for 5 seconds or 10 seconds.

Used to select the maximum OGM recording time (1 = 15 sec, 0 = 60
sec).

SW-H1 No. 5 Busy tone detect continuation sound detect during
OGM

SW-I3 No. 2 Reserved

Used to detect the continuous tone of specific frequency during OGM
output.

Set to “0”.

SW-H1 No. 6 Busy tone detect continuation sound detect during
ICM

If this switch is set to “1”, machine doesn’t work two way recording
function.

Used to detect the continuous tone of specific frequency during ICM
recording.

SW-I3 No. 4 Toll saver

SW-I3 No. 3 Two way record function

Used to turn on the toll saver function. If it is off, the reception frequency
in the AM mode is identical with that in the FAX mode.

SW-H1 No. 7 Busy tone detect intermittent sound detect during
OGM
Used to detect the intermitten tone of specific frequency during OGM
output.

SW-I3 No. 5, No. 6 Reserved

SW-H1 No. 8 Busy tone detect intermittent sound detect during
ICM

SW-I3 No. 7 BOX selection to record ICM

Set to “0”.

This switch is selection to digit of BOX selection code (DTMF code).

Used to detect the intermittent tone of specific frequency during ICM
recording.

1-digit: Input of box number (1-3)
2-digit: Input of box number (01-03)

SW-H2 No. 1, No. 2 Busy tone detection pulse number

Note: In case of 1-digit, the DTMF code can be accepted for 4 seconds
from the beginning of ICM.

Used to set detection of Busy tone intermittent sounds.

OGM OUT PUT
MAX 60S

SW-H2 No. 3 Fax switching when A.M. full
If the answering machine’s memory (tape) is full and there is no response, the machine automatically switches to Fax reception.

1 digit

SW-H2 No. 4 Busy tone detect continuation sound detect frequency

2 digit

BEEP
1S

ICM RECORDING
4S

For 4 seconds from the beginning of ICM
OGM/ICM

Set detecting frequency of busy tone continuation sound for 320 ~ 570
Hz or 320 ~ 460 Hz.

SW-I3 No. 8 Transfer dial recall

SW-H2 No. 5 ~ No. 8 Reserved

If this switch is set to “1”, machine disable redial in Transfer function.

Set to "0".

SW-I4 No. 1 ~ No. 4 AGC maximum gain (Line)
(10~25dBm)

SW-I1 No. 1, No. 2 ICM recording time

The AGC Maximum Gain limits the gain applied by the AGC. Message
with average energy below the AGC Energy Reference Level will have
their average energy level increased by no more than the AGC Maximum
Gain. The AGC Maximum Gain should average energy of the message
with the lowest average energy to the AGC Energy Reference Level.

Used to select the incoming message recording time among 15sec/
30sec/60sec/4min.
SW-I1 No. 3, No. 4 A.M. quiet time 1
Used to select four kinds of no sound time (2 sec ~ 5 sec) after reception
in the T. A. D mode until OGM is output.

Reception

OGM output

SW-I4 No. 5 ~ No. 8 AGC maximum gain (Mic)
(10~25dBm)

ICM recording

The AGC Maximum Gain limits the gain applied by the AGC. Message
with average energy below the AGC Energy Reference Level will have
their average energy level increased by no more than the AGC Maximum
Gain. The AGC Maximum Gain should average energy of the message
with the lowest average energy to the AGC Energy Reference Level.

2 sec~ 5 sec ( SW-I1No. 3, No. 4)
SW-I1 No. 5, No. 6 A.M. quiet time 2
Used to select four kinds of no sound time (0 sec ~ 3 sec) after OGM
output the T. A. D mode until ICM recording is started.

Reception

OGM output

SW-I5 No. 1 ~ No. 4 AGC eref access code (Line)
(-0~-30dBm with 2dBm step)

ICM recording

The AGC Energy Reference Level controls the playback level. Any
message having average speech energy above the energy reference
level has its playback level attenuated, and any level has its playback
level increased. If the playback level is too high (low), then decreasing
(increasing) the AGC energy Reference level will achieve the desired
level.

0 sec~3 sec (SW-I1 No. 5, No. 6)
SW-I1 No. 7 key input buzzer on/off switch (Two way recording
mode)
Used to turn ON/OFF key input buzzer in the TWO-WAY recording mode.

SW-I5 No. 5 ~ No. 8 AGC eref access code (Mic)
(-0~-30dBm with 2dBm step)

SW-I1 No. 8 Reserved

The AGC Energy Reference Level controls the playback level. Any
message having average speech energy above the energy reference
level has its playback level attenuated, and any level has its playback
level increased. If the playback level is too high (low), then decreasing
(increasing) the AGC energy Reference level will achieve the desired
level.

Set to “0”.
SW-I2 No. 1 ~ No. 5 A.M. quiet detect time
Used to set no sound time (0 sec - 32 sec) during the T. A. D. mode
operation.
SW-I2 No. 6, No. 7 Reserved
Set to “0”.

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UX-258TH
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SW-I6 No. 1 ~ No. 4 AGC gain adaptation threshold (Line)
(-40~-70dBm with 2dBm step)

SW-J1 No. 1, No. 2 Reserved
Set to "0".

The AGC adjusts the amount of gain applied to the incoming message
only when the average energy exceeds the AGC Gain Adaptation
Threshold. The AGC Gain Adaptation Threshold prevents message
background noise from corrupting the gain provided that the AGC Gain
Adaptation Threshold is greater than the background noise energy. In
the event that a message has background noise energy greater than
the AGC Gain Adaptation Threshold, the AGC Gain can be no greater
than the AGC Maximum Gain. Note that the AGC Gain Adaptation
Threshold must always be greater than the RPACS VOX Turn-On
Threshold).

SW-J1 No. 3 Sender’s phone number setting
Used to make a choice of whether the registered sender’s phone number
can be changed or not. If the switch is set to "1", new registration of the
sender’s phone number is disabled to prevent accidental wrong input.
SW-J1 No. 4 ~ No. 6 Reserved
Set to "0".
SW-J1 No. 7, No. 8 Ringer volume
Used to adjust ringing volume.

SW-I6 No. 5 ~ No. 8 AGC gain adaptation threshold (Mic)
(-40~-70dBm with 2dBm step)

SW-J2 No. 1, No. 2 Reserved
Set to "0".

The AGC adjusts the amount of gain applied to the incoming message
only when the average energy exceeds the AGC Gain Adaptation
Threshold. The AGC Gain Adaptation Threshold prevents message
background noise from corrupting the gain provided that the AGC Gain
Adaptation Threshold is greater than the background noise energy. In
the event that a message has background noise energy greater than
the AGC Gain Adaptation Threshold, the AGC Gain can be no greater
than the AGC Maximum Gain. Note that the AGC Gain Adaptation
Threshold must always be greater than the RPACS VOX Turn-On
Threshold.

SW-J2 No. 3 Polling key
If this switch is set to 1, the last of Rapid key works as polling key.
SW-J2 No. 4, No. 5 Reserved
Set to "0".
SW-J2 No. 6 ~ No. 8 Speaker volume (5 stages)
Used to adjust sound volume from a speaker.
SW-J3 No. 1, No. 2 Reserved

SW-I7 No. 1, No. 2 AGC slew rate (Line)

Set to "0".

The AGC Slew Rate controls the convergence of the message playback
level to the desired playback level. A large slew rate will allow faster
convergence and a small slew rate will allow slower convergence.

SW-J3 No. 3, No. 4 Communication result printout (Transaction report)
It is possible to obtain transaction results after each communication.
Normally, the switch is set (No. 1: 0, No. 2: 0) so that the transaction
report is produced only when a communication error is encountered. If
No. 1 was set to 1 and No. 2 to 0, the transaction report will be produced
every time a communication is done, even if the communication was
successful.
Setting No. 1 to 1 and No. 2 to 1 will disable this function. No transaction
report printed.

SW-I7 No. 3, No. 4 AGC slew rate (Mic)
The AGC Slew Rate controls the convergence of the message playback
level to the desired playback level. A large slew rate will allow faster
convergence and a small slew rate will allow slower convergence.
SW-I7 No. 5 FAX BOX function
FAX BOX function YES/NO is set.

SW-J3 No. 5 ~ No. 8 Reserved

Energy
reference
threshold
Output
Gain
(dB)
adaptive
threshold

Set to "0".
SW-K1 No. 1 Entering DIAG mode by pressing SPEED key

Maximum
gain

A bit which is used in the production process only. When the SPEED key
is pressed, the switch is changed from the stand-by state to the DIAG
mode.
SW-K1 No. 2 ~ No. 8 Reserved
Set to "0".

Energy
Energy
Gain
adaptive reference reference
threshold threshold threshold
(...Maximum
gain)
Input(dB)

SW-L1 No. 1 ~ No. 5 OGM/ICM output level

Energy
reference
threshold
(...+25dB)

Used to control OGM and ICM output level.
SW-L1 No. 6 ~ No. 8 Reserved
Set to "0".
SW-L2 No. 1 ~ No. 8 Reserved

RPACS AGC Parameter operation envelope

Set to "0".

SW-I7 No. 6 Frequency of voice detection after REMINDER dialing
When reminder calling, machine will detect the voice signal and start to
send the reminder voice message. This switch is used to select the voice
detecting frequency range.
When set to "0", machine detect the 800 ~ 1200 Hz as voice.
When set to "1", machine detect the 800 ~ 1400 Hz as voice.
SW-I7 No. 7, No. 8 Voice detection time after REMINDER dialing
This switch is used how long time coming voice frequency is judged as
voice.

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UX-258TH
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[3] Troubleshooting
Refer to the following actions to troubleshoot any of problems mentioned
in 1-4.
[1]

A communication error occurs.

[2]

Image distortion produced.

[3]

Unable to do overseas communication.

[4]

Communication speed slow due to FALLBACK.

•

Increase the transmission level SOFT SWITCH A4-1, 2, 3, 4, 5.
May be used in case [1] [2] [3].

•

Decrease the transmission level SOFT SWITCH A4-1, 2, 3, 4,
5. May be used in case [3].

•

Apply line equalization SOFT SWITCH A5-1, 2.
May be used in case [1] [2] [3] [4].

•

Slow down the transmission speed SOFT SWITCH A2-1, 2, 3,
4. May be used in case [2] [3].

•

Replace the TEL/LIU PWB.
May be used in all cases.

•

Replace the control PWB.
May be used in all cases.

* If transmission problems still exist on the machine, use the following
format and check the related matters.

TO:

ATT:

Ref.No. :

CC:

ATT:

Date

:

Dept

:

Sign

:

FM:

From: Mr.
Our customer

Other party

Problem mode

Name
Address
Contact person
Name
Address
Contact person
Line: Domestic / international
Reception / Transmission

Frequency:
Confirmation
item

Ref.No.:

***** Facsimile communication problem *****
Fax Tel No.:

Our customer

Date:

Model:
G3
Automatic reception / Manual reception
Automatic dialing / Manual dialing / Others
% ROM version:

Other party

B1
B2

Tel No.
Fax No.
Model name
Tel No.
Fax No.
Model name
Phase: A, B, C, D.

Please mark problem with an X.
No problem is: 0.
A1 A2 B1 B2 C1 C2

A1

A2

C1

D2
C2

E1
E2

Our service

D1
Other party's service

Comment

Countermeasure

**** Please attach the G3 data and activity report on problem. ****
* Please complete this report before calling the “TAC” hotline if problem still occurs.

2 – 17

D1 D2 E1 E2

Transmission level setting is (
customer
Transmission level (
) dBm
Reception level (
) dBm
By level meter at B1 and B2

) dB at our

UX-258TH
FO-475TH

[4] Error code table
1. Communication error code table
G3 Transmission
Code

Final received signal

Error Condition (Receiver side)

0

Incomplete signal frame

Cannot recognize bit stream after flag

1

NSF, DIS

Cannot recognize DCS signal by echo etc.

2

CFR

Disconnects line during reception (carrier missing etc)

3

FTT

Disconnects line by fall back

4

MCF

Cannot recognize NSS signal (FIF code etc)

Disconnects line during reception of multi page
Cannot recognize NSS, DCS signal in the case of mode change

5

PIP or PIN

The line is hung up without replying to telephone request from the receiving party.

6

RTN or RTP

Cannot recognize NSS, DCS signal after transmit RTN or RTP signal.

7
8

No signal or DCN
−

No response in receiver side or DCN signal received* (transmitter side)
Owing to error in some page the error could not be corrected although the specified number of
error retransmission was at tempted.

11

−

12

−

Error occurred just after fallback.

13

−

Error occurred after a response to retransmission end command was received.

Error occurred after or while reception by the remote (receiving) machine was revealed to be
impossible.

G3 Reception
Code
0
1

Final received signal
Incomplete signal frame
NSS, DCS

Error Condition (Receiver side)
Cannot recognize bit stream after flag
Cannot recognize CFR or FTT signal
Disconnects line during transmission (line error)

2

NSC, DTC

Cannot recognize NSS signal (FIF code etc)

3

EOP

Cannot recognize MCF, PIP, PIN, RTN, RTP signal

4
5

EOM
MPS

Cannot recognize MCF, PIP, PIN, RTN, RTP signal in the case of mode change
The line is hung up without replying to communication request.

6
7

PR1-Q
No signal or DCN

Cannot recognize PIP, PIN signal in the case of TALK request
No response in transmitter (cannot recognize DIS signal) or DCN signal received* (receiver side)

8

−

Error occurred upon completion of reception of all pages.

9

−

Error occurred when mode was changed or Transmission/Reception switching was performed.

10

−

Error occurred during partial page or physical page reception.

11

−

Error occurred after or during inquiry from the remote (transmitting) machine as to whether

12

−

Error occurred during or just after fallback.

13

−

Error occurred after the retransmission end command was received.

reception is possible or not.

2 – 18

UX-258TH
FO-475TH

3-2. Automatic document feed

CHAPTER 3. MECHANISM BLOCKS

1) Use of the paper feed roller and separation rubber plate ensures error-free transport and separation of documents. The plate spring
presses the document to the paper feed roller to assure smooth feeding of the document.

[1] General description

2) Document separation method: Separation rubber plate

1. Document feed block and diagram

Separator rubber

Paper feed spring

Separator rubber
Paper feed spring
Rear roller A/B
Transfer roller

Document
Document
Paper feed roller

Paper feed roller
CIS
Pinch roller

Fig. 3

3-3. Documents applicable for automatic feed
Fig. 1

Square
meter series

4x6 series
(788mm x 1091mm x
1000mm sheets)

2. Document feed operation

Minimum

1) The document placed in the hopper actuates the document sensor.
After one second, the pulse motor starts to drive the paper feed roller.
The document is automatically taken up into the machine, and stopped
at the document sensor.

Feeder capacity
Paper weight

Maximum

Minimum

Maximum

52g/m2

74.3g/m2

10 sheets, max.
45kg

64.3kg

Paper thickness (ref.) 0.06mm
0.09mm
0.06mm
0.09mm
Paper size
1/2 Letter (148mm x 140mm) ~
A4 (210mm x 297mm), Letter (216mm x 279mm)

2) When a specified number of pulses are received from the document
sensor after the document lead edge is sensed, scanning is started.
3) When a specified number of pulses are received from the document
sensor after the document rear edge is sensed, scanning is terminated and the document is fed through.

NOTE: Double-side coated documents and documents on facsimile recording paper should be inserted manually. The document feed
quantity may be changed according to the document thickness.

4) If the document sensor is active (i.e., another document is in the
hopper), when the preceding document scanning is completed and it
is fed out, the next document is taken up into the machine. If the
document sensor is not active (i.e., there is no document in the hopper), when the document is fed out, the operation is terminated.

Documents corresponding to a paper weight heavier than 64.3kg (74.3g/
m2 ) and lighter than 135kg (157g/m2 ) are acceptable for manual feed.
Documents heavier than 135kg in terms of the paper weight must be
duplicated on a copier to make it operative in the facsimile.

3. Hopper mechanism

3-4. Loading the documents

3-1. General view

1) Make sure that the documents are of suitable size and thickness, and
free from creases, folds, curls, wet glue, wet ink, clips, staples and
pins.
2) Place documents face down in the hopper.
i) Adjust the document guides to the document size.
ii) Align the top edge of documents and gently place them into the
hopper. The first page under the stack will be taken up by the feed
roller to get ready for transmission.
NOTES: 1) Curled edge of documents, if any, must be straighten
out.
2) Do not load the documents of different sizes and/or
thicknesses together.
Separator rubber

Paper feed spring

Fig. 2

Last page of document
Back of document

The hopper is used to align documents with the document guides adjusted to the paper width.
NOTE: Adjust the document guide after setting up the document.

First page of document
Paper feed roller

Fig. 4

3–1

UX-258TH
FO-475TH

3-5. Documents requiring use of document carrier

5. Recording block

1) Documents smaller than B6 (128mm x 182mm).

5-1. General view

2) Documents thinner than the thickness of 0.06mm.

RECORDING BLOCK (NON CUTTER MODEL)

3) Documents containing creases, folds, or curls, especially those whose
surface is curled (maximum allowable curl is 5mm).

Scanner frame
Thermal head

4) Documents containing tears.
Paper guide upper

5) Carbon-backed documents. (Insert a white sheet of paper between
the carbon back and the document carrier to avoid transfer of carbon
to the carrier.)
6) Documents containing an easily separable writing material (e.g., those
written with a lead pencil).

Recording paper

7) Transparent documents.

Paper support

8) Folded or glued documents.
Platen roller

Document in document carrier should be inserted manually into the
feeder.

RECORDING BLOCK (CUTTER MODEL)
Scanner frame

4. Document release

Thermal head

4-1. General
When the release lever is pulled by hand in the direction of arrow, the
latch is released and the upper document guide moves on its axis in the
derection of the arrow. The feed rollers, the separation rubber plate, and
the pinch rollers become free to make it possible to remove the document.

Recording paper
Paper support

4-2. Cross section view
Platen roller
Cutter cover

Cutter guide
Cutter unit

Fig. 6

5-2. Driving

Operation panel unit

Via the pulse motor gear shaft, the reduction gear, and the recording
paper feed gear, rotation of the pulse motor is conveyed to the recording
paper feed roller to feed the recording paper.

5-3. Recording

Scanner frame unit

Use of a thermal head permits easier maintenance and low operating
costs.

PWB case unit

1) Thermal head
The thermal head consists of 1728-dot heat elements arranged in a single row and has the resolution of 8 dots/mm. The maximum recording
speed is 10ms/line. The thermal head also incorporates a 1728-dot shift
register latch and output control driver circuit. Low power consumption
is achieved by dividing the head into nine segments.

2) Structure of the recording mechanism
Recording is accomplished by pressing the thermal head on the recording paper against the platen roller.

Lower cabinet

The main scan (horizontal) is electronically achieved, while the subscan
(vertical) is achieved by moving the recording paper by the recording
platen roller.

Fig. 5

Usually, the cause for uneven print tone is caused by misalignment of
the thermal head or uneven contact with the roller.
It can be checked in the following manner.
1) Check if the thermal head power and signal cables are properly routed.
2) Check that the thermal head pivot moves smoothly up and down.
3) Check that the thermal head support bracket is secured without any
play.
4) Check to see that the recording platen roller has proper concentricity,
in the case of a print tone variation evenly repeated down the page.
5) Replace the thermal head with a new one and check to see if the
same trouble occurs.

3–2

UX-258TH
FO-475TH

[2] Disassembly and assembly procedures
•
•

This chapter mainly describes the disassembly procedures. For the assembly procedures, reverse the disassembly procedures.

•
•

The numbers in the illustration, the parts list and the flowchart in a same section are common to each other.

Easy and simple disassembly/assembly procedures of some parts and units are omitted. For disassembly and assembly of such parts and units,
refer to the Parts List.

To assure reliability of the product, the disassembly and the assembly procedures should be performed carefully and deliberately.

1

Parts list (Fig. 1)

Handset cover and paper support guide

No.

Q’ty

No.

1

Mechanism unit

Part name

1

7

Anti curl spring

2

2

Handset cover

1

8

PO pinch roller

2

3

Hook switch lever

1

9

Paper sensor lever

1

4

Screw (ø3×12)

2

10

Paper sensor lever spring

1

5

Paper support guide unit

1

11

Guide sheet

2

6

Anti curl shaft

1

12

Paper support guide

1

1

9

6
2

8

3

9

6

4

10

7

5

11

Part name

11

10

12
8

11

7
8
7

3
12

Lock the all hook
(4place)

4

4

2

1

5

5

Hook

1

Fig. 1

3–3

Hook

Q’ty

UX-258TH
FO-475TH

2

Parts list (Fig. 2)

PWB case top, bottom and PWB

No.

Q’ty

No.

1

Mechanism unit

Part name

1

9

Screw (4×6)

1

2

Screw (3×6)

1

10

AC cord ass’y

1

3

Head earth cable

1

11

Screw (3×6)

1

4

Connector

2

12

TEL ARG cable

1

5

Screw (3×10)

1

13

Power supply PWB unit

1

6

PWB case unit

1

14

TEL/LIU PWB unit

1

7

Screw (3×10)

2

15

Rubber leg

2

8

PWB case, top

1

16

PWB case, bottom

1

1

Part name

8

2

7

12

3

8

13

4

9

14

5

10

15

6

11

16

AC cord
earth cable

45˚
14

12

11

9

10
3
2
Rib
13

3
4
4
15

16
7
7

Control
PWB

5

6

1
Fig. 2

3–4

Q’ty

UX-258TH
FO-475TH

3

Parts list (Fig. 3)

Operation panel unit and scanner frame

No.

1

16

Q’ty

No.

1

Mechanism unit

Part name

1

9

Feed roller

1

2

Screw (3×10)

2

10

CIS cable

1

3

Scanner frame unit

1

11

CIS support, right

1

4

Document guide lower

1

12

CIS unit

1

5

Reduction gear, 17/36Z

1

13

CIS support, left

1

6

Reduction gear, 17/21Z

1

14

CIS spring

2

7

Idler gear, 25Z

1

15

Scanner frame

1

8

Feed roller shaft

1

16

Panel and head cable

2

17

Operation panel unit

1

6

10

14

3

7

11

15

4

8

12

5

5

9

13

6

Q’ty

Hook

8

2

Part name

8

Mount the CIS unit
by inserting a screwdriver between the
scanner frame and
CIS support and
turning it (the same
method on the left
and right sides).

9
4

7

17

Screwdriver

14
10
Hook
13

14

12

17

11

Hook

15

CIS support
11 ,13

2
3

2

2

3

1

16
16

Stopper plate
2
3

1
1
Fig. 3

3–5

UX-258TH
FO-475TH

4

Parts list (Fig. 4)

Document guide upper unit and head
frame

No.

Q’ty

No.

1

Operation panel unit

Part name

1

11

Head support, right

1

2

Screw (3×10)

2

12

Screw (3×6)

1

3

Support plate

1

13

Head earth cable

1

4

Document guide upper

1

14

Head support, left

1

15

Thermal head

1

unit

Part name

5

Screw (3×10)

2

16

Pinch roller shaft

1

6

Head sheet

1

17

Pinch roller

2

7

Head cable

1

18

Pinch roller pressing

2

8

Head spring A

2

9

Head spring B

3

10

Screw (3×6)

1

spring
19

Head frame

1

1
2

7

12

3

8

13

4

9

14

5

10

15

6

11

16

4

17

2

18
2

16

18

19

17
18
19

12
13

5

14

8
7
13

5

9
8
10

14

11
A
15
B

View:A

View:B
6
Fig. 4

3–6

Q’ty

3

1

UX-258TH
FO-475TH

5

Parts list (Fig. 5)

Document guide upper

No.

Q’ty

No.

1

Rear sheet

Part name

1

10

Panel lock lever

1

2

CIS gear, 29Z

1

11

Document sensor lever

1

3

CIS roller A ass’y

1

4

Transfer bearing

1

12

Document sensor lever

1

5

CIS roller B ass’y

1

13

Separate spring

1

6

Transfer roller

1

14

Separator plate

1

7

Transfer bearing

1

15

Paper feed spring

1

8

Idler gear, 20Z

1

16

Separator rubber

1

9

Panel lock lever spring

1

17

Document guide upper

1

1

Part name

Q’ty

spring

12

2

9

3

10

4

11

5

12

6

13

7

14

8

15

13

11
14

16

16
10

15
13
11
12
17

9

17

8

7
1

2
6

4

1

Applying
standard

3

5
Applying
standard

Fig. 5

3–7

UX-258TH
FO-475TH

6

Parts list (Fig. 6)

Operation panel

No.

1
6

2

12

7

3

13

8

4

14

9

5

15

10 11

16

Q’ty

No.

1

Operation panel unit

Part name

1

9

Hopper guide, right

Part name

Q’ty
1

2

Screw (2×6)

3

10

Hopper guide, left

1

3

Operation panel cable

1

11

TAD key

1

4

Operation panel PWB

1

12

Stop key

1

5

Document tray

1

13

Start key

1

6

Screw

1

14

Direct key

1

7

Pinion gear

1

15

12 key

1

8

Hopper spring

1

16

Operation panel

1

10

Confim of HOPPER GUIDE position
Rib
Rib
GAP 0
HOPPER
GUIDE (R)
HOPPER
GUIDE (L)
GAP 0

9

16

1
8
7

5

6

11

12
15
13

14

LCD PWB

Operation
panel PWB

1

LCD cable

4

2
2

2
3

Fig. 6

3–8

UX-258TH
FO-475TH

7

Parts list (Fig. 7)

Drive unit, PWB and cutter

No.

1
2

8

14

3

9

15

4

10

16

5

11

6

12

7

13

2

Q’ty

No.

1

Mechanism unit

Part name

1

9

Cutter unit

Part name

2

Screw (3×10)

2

10

Screw (3×10)

1

3

Cutter arm

1

11

Cutter cover

1

4

Drive unit

1

12

Cutter guide

1

5

Platen gear

1

13

Cutter

1

6

Platen roller

1

14

Screw (3×10)

2

7

Platen bearing

2

15

Speaker cable

1

8

Screw (3×10)

1

16

Control PWB unit

1

1

2
OK

NG

1

4

4

1

4

14
2
2
5

4

15

14

16

6

16

1
7
3

6

5
7

8

7
9

1
10
11

12

13

Fig. 7

3–9

Q’ty

UX-258TH
FO-475TH

8

Parts list (Fig. 8)

Speaker and paper sensor lever

No.

Part name
Mechanism unit

1

2

Paper sensor lever spring

1

3

Paper sensor lever

1

4

Screw

2

5

Speaker

1

5

1
Rib
2

4

3

5
3

4

4

2

5

2
1
3

Fig. 8

3 – 10

Q’ty

1

UX-258TH
FO-475TH

9

Drive frame
Parts list (Fig. 9)
No.

Q’ty

No.

Q’ty

No.

Part name

Q’ty

1

Cutter cam switch

Part name

1

11

Planet gear, 17Z

Part name

1

21

Reduction gear, 17/36Z

1

2

Planet gear, 17Z

1

12

Planet gear spring

1

22

Idler gear, 25Z

1

3

Planet gear spring

1

13

Planet gear lever A

1

23

Idler gear, 25Z

1

4

Planet gear lever C

1

14

Planet gear, 17Z

1

24

Idler gear, 20Z

1

5

Change lever spring

1

15

Planet gear spring

1

25

Screw (3×10)

1

6

Planet gear, 17Z

1

16

Planet gear lever B

1

26

Motor

1

7

Change lever A

1

17

Idler gear, 25Z

1

27

Motor heat sink

1

8

Cam

1

18

Cam switch

1

28

Drive frame

1

9

Reduction gear, 17/36Z

1

19

Reduction gear, 17/30Z

1

10

Cutter gear, 44Z

1

20

Reduction gear, 17/30Z

1

1
2

3

4

17

24

5

6

7

18

25

8

19

26

9

20

27

10

21

28

11 12 13

22

28

11 , 14

Grease

1 , 18

25

14 15 16

To be the switch
linked by hooks
Grease

27

26

GREEN

28

23

21

18

11

12

16
14

WHITE

A

A
Lock the
MOTOR
by this rib

15

23

1

13

24
20

8
17

SECTION : A-A

19
Hook be doing
lock

NOTE) Apply certanly to
a part of a nail at the time
of GREASE application

2

3

4

7

6

9
10

5

22

3 , 12 , 15

5
7

GEAR attachment boss

Fig. 9

3 – 11

UX-258TH
FO-475TH

10

Parts list (Fig. 10)

Wire treatment

No.

Part name
Band (100m)

6

2

Screw (3×6)

2

3

Screw (4×6)

1

4

UL tape

3

5

Core (F2064)

1

6

Core (F2103)

1

Control PWB
Speaker

Fixed this switch after adjusting the
cutter gear in this drawing,

Rib

Speaker cable
Cutter cable

OK

NG

ARG
cable

3

AC cord

2
Cam
switch
cable

Postion of core

TEL/LIU
PWB
2

1
5
6

Power supply
PWB

1
Rib

Brinding the cable(Head cable/
1
Head earth cable/CIS cable/
panel cable/motor cable/cam cable)

Head earth cable

1 Binding the core with lower cabinet
Cutter cable
CIS
cable

6

Head cable

Head cable and head earth cable
pass to the core 2times

1

Cam
switch
cable
Motor
cable Panel
cable
Head
earth
cable

CIS
cable

Speaker cable

Head cable

Panel cable pass to
the core 2times

5
Head cable and head
earth cable

1
1

All the cables
must wiring to the
motor heat sink
The panel cable mustwiring
to under core

,
,
, , ,
,,

Operation panel PWB

CIS
cable

1

CIS unit

20 5mm

Panel cable

4

100 10mm

1

0~2mm

19mm

Head, head earth and
panel cable

Panel
cable

Fig. 10

3 – 12

Q’ty

1

4

4–1

EXT.TEL

LINE

HANDSET

SPEAKER

SPEAKER
AMPLIFIER

BLOCK

SURGE
PROTECT/
FILTER

AMPLIFIER

AMPLIFIER

AMP/SIGNAL
SELECT

MODEM

CLOCK
49.920MHz

CONTROL PWB UNIT

[1] Block diagram

CML

VBT

SRAM
256Kbit

CI

TRANSFORMER

AMPLIFIER

RESET IC

FLASH
MEMORY
4Mbit

BZ

TEL/LIU
PWB UNIT

CLOCK
16MHz

CLOCK
32.768kHz

ROM
2Mbit

PIO

SURGE
TRANS
ABSORBER

RECTIFIER
DIODE

TRANSFORMER

RECTIFIER

REGULATOR

+5V

PANEL I/F

SIO

THERMAL
PRINTER I/F

PIO

RTC

CPU

MOTOR I/F

CIS I/F

TIMER

WATCHDOG
TIMER

INTERRUPT
CONTROLLER

CPU I/F
BUS I/F

1CHIP FAX ENGINE (FC200)

FILTER

POWER SUPPLY
PWB UNIT

STABILIZER

+24V

OPERATION
PANEL
PANEL

THERMAL
HEAD

DRIVER

LCD

CUTTER

PAPER
SENSOR

PM

CONTACT
IMAGE SENSOR

DOCUMENT SENSOR

UX-258TH
FO-475TH

CHAPTER 4. DIAGRAMS

FG

4–2

14

OPERATION
PANEL PWB

CNLCD

LCD UNIT

CNPN

CONTACT IMAGE SENSOR

THERMAL HEAD

[2] Wiring diagram

15

7

16

CNCIS

CNTH

TX/RX MOTOR

CNPN

CNMT

6

CNCUT1

2

CUTTER
SENSOR

SPEAKER

2

CNSP

CONTROL PWB UNIT

CNCSW

2

CAM SW

CNPW

CNLIUA

10

12

FG

POWER SUPPLY
PWB UNIT

CN2

CNLIU

TEL/LIU
PWB UNIT

MJ1/2

MJTEL

TEL LINE

EXTERNAL LINE

HANDSET

AC CORD

UX-258TH
FO-475TH

[3] Point- to-point diagram

4–3
CIS

OPERATION
PANEL
PWB

CNCIS
1
VO
2
DG
3
+5V
4
øT
5
CISCLK
6
GLED
7
+24V
VO
DG
+5V
øT
CISCLK
GLED
+24V

1
2
3
4
5
6
7

CNPN
1
KEN4A
2
KEN3A
3
KEN2A
4
KEN1A
5
DG
6
DG
7
+5V
8 ORGSNS
9
FRSNS
10
E
11
SEN4
12
SEN3
13
SEN2
14
SEN1
15
SEN0

THERMAL
HEAD

CNPN
1
KEN4A
2
KEN3A
3
KEN2A
4
KEN1A
5
DG
6
DG
7
+5V
ORGSNS 8
9
FRSNS
10
E
11
SEN4
12
SEN3
13
SEN2
14
SEN1
15
SEN0

CNTH
1
VTH
2
VTH
3
STRB1
4
STRB2
5
THI
6
RANK
7
MG
8
MG
9
MG
10
+5V
11
STRB3
12
STRB4
13
LATCH
14
PCLK
15
DATA
16
VTH

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

VTH
VTH
STRB1
STRB2
THI
RANK
MG
MG
MG
+5V
STRB3
STRB4
LATCH
PCLK
DATA
VTH

TX/RX
MOTOR

TPAD
TPBD
TPAD
TPBD
VMT
VMT

1
2
3
4
5
6

CNMT
1
2
3
4
5
6

TPAD
TPBD
TPAD
TPBD
VMT
VMT

1
2

CNSP
1
2

CONTROL
PWB

SP+
SP-

1
2

1
2

SP+
SP-

CUT1
DG

CSW
DG

CN2
1
DG
2
+5V
3
VTHON
4
MG
5
MG
6
MG
7
+24V
8
VTH
9
VTH
10
VTH

CNLIU
1
TELOUT
2
TELIN
3 TELMUTE
4
CI
5
HS
6
RHS
7
RXIN
8
TXOUT
9
CML
10
+24VA
11
+5V
12
DG

CNCUT1
1
CUT1
2
DG

CNCSW
1
CSW
2
DG

CNPW
1
DG
2
+5V
3
VTHON
4
MG
5
MG
6
MG
7
+24V
8
VTH
9
VTH
10
VTH

CNLIUA
1
TELOUT
2
TELIN
TELMUTE 3
4
CI
5
HS
6
RHS
7
RXIN
8
TXOUT
9
CML
10
+24VA
11
+5V
12
DG

SPEAKER

CUTTER
SWITCH

CAM
SWITCH

POWER
SUPPLY
PWB

TEL/LIU
PWB

UX-258TH
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UX-258TH
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3. Operational description

CHAPTER 5. CIRCUIT DESCRIPTION

Operational descriptions are given below:

•

[1] Circuit description

When a document is loaded in standby mode, the state of the document sensor is sensed via the 1 chip fax engine (FC200). If the sensor signal was on, the motor is started to bring the document into the
standby position. With depression of the START key in the off-hook
state, transmission takes place.
Then, the procedure is sent out from the modem and the motor is
rotated to move the document down to the scan line. In the scan
processor, the signal scanned by the CIS is sent to the internal image processor and the AD converter to convert the analog signal into
binary data. This binary data is transferred from the scan processor
to the image buffer within the RAM and encoded and stored in the
transmit buffer of the RAM. The data is then con-verted from parallel
to serial form by the modem where the serial data is modulated and
sent onto the line.

1. General description
The compact design of the control PWB is obtained by using ROCKWELL fax engine in the main control section and high density printing of
surface mounting parts. Each PWB is independent according to its function as shown in Fig. 1.

2. PWB configuration

TEL/LIU
PWB

•
LCD
PWB

CONTROL
PWB

Receive operation
There are two ways of starting reception, manual and automatic.
Depression of the START key in the off-hook mode in the case of
manual receive mode, or CI signal detection by the LIU in the automatic receive mode.

POWER
SUPPLY
PWB
PANEL
PWB

Transmission operation

First, the FC200 controls the procedure signals from the modem to
be ready to receive data. When the program goes into phase C, the
serial data from the modem is converted to parallel form in the modem interface of the 1 chip fax engine (FC200) which is stored in the
receive buffer of the RAM. The data in the receive buffer is decoded
software-wise to reproduce it as binary image data in the image buffer.
The data is DMA transferred to the recording processor within the
FC200 which is then converted from parallel to serial form to be sent
to the thermal head. The data is printed line by line by the FC200
which is assigned to control the motor rotation and strobe signal.

AC CORD
TX/RX
MOTOR

Fig. 1

1) Control PWB
•

The control PWB controls peripheral PWBs, mechanical parts, transmission, and performs overall control of the unit.
This machine employs a 1-chip modem (R96V24) which is installed on
the control PWB.

Copy operation
To make a copy on this facsimile, the COPY key is pressed when the
machine is in stand-by with a document on the document table and
the telephone set is in the on-hook state.
First, depression of the COPY key advances the document to the
scan line. Similar to the transmitting operation, the image signal from
the CIS is converted to a binary signal in the DMA mode via the 1
chip fax engine (FC200) which is then sent to the image buffer of the
RAM. Next, the data is transferred to the recording processor in the
DMA mode to send the image data to the thermal head which is
printed line by line. The copying takes place as the operation is repeated.

2) TEL/LIU PWB
This PWB controls connection of the telephone line to the unit.

3) Power supply PWB
This PWB provides voltages of +5V and +24V to the other PWBs.

4) Panel PWB
The panel PWB allows input of the operation keys.

5) LCD PWB
This PWB controls the LCD display.

5–1

UX-258TH
FO-475TH

2) 27C020 (IC8): pin-32 DIP (ROM)

[2] Circuit description of control PWB

EPROM of 2Mbit equipped with software for the main CPU.

1. General description

3) W24257S-70LL (IC7): pin-28 SOP (SRAM)

Fig. 2 shows the functional blocks of the control PWB, which is composed of 4 blocks.

Line memory for the main CPU system RAM area and coding/decoding
process. Used as the transmission buffer.

MAIN
CONTROL
BLOCK

Memory of recorded data such as daily report and auto dials. When the
power is turned off, this memory is backed up by the lithium battery.

MECHANISM/
RECORDING
CONTROL
BLOCK

PANEL
CONTROL
BLOCK

4) KM29N040T (IC9): pin-44 TSOP (FLASH MEMORY)
A 512×8bit NAND FLASH MEMORY to store the voice and image data
when using memory functions.

MODEM
BLOCK

Fig. 2 Control PWB functional block diagram

2. Description of each block
(1) Main control block
The main control block is composed of ROCKWELL 1 chip fax engine
(FC200), ROM (256KByte), RAM (32KByte) and FLASH MEMORY
(512KByte).
Devices are connected to the bus to control the whole unit.

1) FC200 (IC2) : pin-144 QFP (FC200)
The FAXENGINE Integrated Facsimile Controllers.
FC200, contains an internal 8 bit microprocessor with an external 16
Mbyte address space and dedicated circuitry optimized for facsimile
image processing and facsimile machine control and monitoring.

MIRQN
A[23:0]
D[7:0]
RDN
WRN
ROMCSN
CSN[1:0]
MCSN
SYNC
REGDMA
WAITN
RASN
CASN[1:0]
DWRN

MC24 CPU CONTROL IF
MC24 MEGACELL(8BIT DATA,24BIT ADDRESS)
WATCHDOG TIMER
REAL TIME CLOCK
CRYSTAL OSCILLATOR
BATTERY BACK-UP CIRCUIT
INTERRUPT CONTROLLER

BUS INTERFACE

EXTERNAL CPU BUS

CPU BUS

DRAM CONTROL
INTERNAL & EXTERNAL BUS CONTROL
INTERNAL & EXTERNAL DECODE
DMA CONTROLLER

OPERATOR PANEL IF
32 KEYS
8 LEDS
LCD MODULE
SYNC SERIF 1

TONE
GPIO[0]
GPIO[1]/SASTXD
GPIO[2]/SASRXD
GPIO[3]/SASCLK
GPIO[4]
GPIO[5]/SSCLK2
GPIO[6]/SSTXD2
GPIO[7]/SSRXD2
GPIO[8]/FWRN
GPIO[9]/FRDN
GPIO[10]/SSSTAT2
GPIO[11]/BE/SERINP
GPIO[12]/CS2N
GPIO[13]/CS3N
GPIO[14]/CS4N
GPIO[15]/CS5N
GPIO[16]/IRQ8
GPIO[17]/IRQ5N
GPIO[18]/IRQ9N
GPIO[19]/RDY/SEROUT
GPIO[20]/ALTTONE
SM[3:0]/GPO[7:4]
PM[3:0]/GPO[3:0]

GENERAL I/O
TONE/MODTONE
GPIO
AUTOBAUD
SYNC-ASYNC SASIF
SYNC SERIF 2
FLASH MEMORY IF
AUTOBAUD

SEE
"OPIF
INPUTS"
BELOW

SCANNER CONTROL & VIDEO PROCESSING
8-BIT PADC
CCD/CIS SCANNER
5 ms,A4/B4 LINES
SHADING CORRECTION(1:1,1:8)
DITHERING
MULTILEVEL B4-A4 REDUCTION
ERROR DIFFUSION
MTF

BI-LEVEL RESOLUTION
CONVERSION
PROGRAMMABLE
REDUCTION &
EXPANSION

THERMAL PRINTER IF

T.4/T.6 CODEC
MH,MR,MMR
HARDWARE,ALTERNATE
COMPRESSION &
DECOMPRESSION

5 ms LINE TIME
A4/B4 LINES
TPH ADC
4 STROBE TPH
LATCHLESS TPH
EXTEMAL DMA I/F

DMA BUS

+VREF
–VREF
VIN

SEE
"OPIF
OUTPUTS"
BELOW

INTERNAL CPU BUS

2.6kBYTE VIDEO RAM

START
CLK1
CLK1N
CLK2
VIDCTL0/FCS1N
VIDCTL1/FCS2N

WRPROTN
SYSCLK
TSTCLK
DEBUGN
RESETN
XIN
XOUT
PWRDWNN
BATRSTN

OPIF INPUTS

PWR/GND

TEST

OPI[0]/GPIO[21]/SSRXD1
OPI[1]/GPIO[22]/SSSTAT1
OPI[2]/GPIO[23]/SSCLK1
OPI[3]/GPIO[24]

Fig. 3

5–2

OPIF OUTPUTS
LEDCTL/GPO[16]
LCDCS/GPO[17]
OPO[0]/GPO[8]
OPO[1]/GPO[9]
OPO[2]/GPO[10]
OPO[3]/GPO[11]
OPO[4]/GPO[12]/SSTXD1
OPO[5]/GPO[13]
OPO[6]/GPO[14]
OPO[7]/GPO[15]

THADIN
PCLK
PDAT
PLAT
STRB[3:0]
STRBPOL

UX-258TH
FO-475TH

FC200 (IC2) Terminal descriptions
Pin Name

Input

Output

Pin Description

Type

Type

(Note: Active low signals have an "n" pin name ending.)

Pin No.

I/O

135
133
130

I
I
O

HU
H
−

O

TU

I/O

TU

123XT

RDn
WRn
ROMCSn
CS1n
CS0n
MCSn
SYNC
REGDMA
WAITn
RASn
CAS[1:0]n
DWRn

[1:6][8:13]
[15:20][22:27]
[136:139]
[141:144]
128
127
120
122
57
121
126
124
125
113
[111:112]
109

CPU Control Interface
−
Modem interrupt, active low. (Hysteresis In, Internal Pullup.)
−
System clock. (Hysteresis In.)
123XT
Test clock.
Bus Control Interface
123XT
Address bus (24-bit).

O
O
O
O
O
O
O
O
O
O
O
O

−
−
−
−
−
−
−
−
−
−
−
−

DEBUGn
RESETn
TEST

129
131
58

I
I/O
I

XIN
XOUT
PWRDWNn
BATRSTn
WRPROTn

59
60
62
61
110

I
O
I
I
O

START
CLK1
CLK1n
CLK2
FCS1n/VIDCTL0
FCS2n/VIDCTL1

101
100
99
98
96
97

O
O
O
O
O
O

29
30
31
[33:36]
37

O
O
O
O
I

47

O

46

O

−

2XL

44

O

−

2XCT

43
42

O
O

−
−

2XL
2XL

Keyboard/LED strobe [3] or GPO[11]
Keyboard/LED strobe [4] or GPO[12] or SSTXD1 (for SSIF1)

40
39
38
52

O
O
O
I/O

−
−
−
HU

2XL
2XL
2XL
2XC

51

I/O

HU

2XC

50

I/O

HU

2XC

Keyboard/LED strobe [5] or GPO[13]
Keyboard/LED strobe [6] or GPO[14]
Keyboard/LED strobe [7] or GPO[15]
(Pullup, Hysteresis In) Keyboard return [0] or GPIO[21] or SSRXD1
(for SSIF1)
(Pullup, Hysteresis In) Keyboard return [1] or GPIO[22] or SSSTAT1
(for SSIF1)
(Pullup, Hysteresis In) Keyboard return [2] or GPIO[23] or SSCLK1
(for SSIF1)

MIRQn
SYSCLK
TSTCLK
A[23:0]
D[7:0]

PCLK
PDAT
PLAT
STRB[3:0]
STRBPOL
OPO[0]/GPO[8]/
SMPWRCTRL
OPO[1]/GPO[9]/
PMPWRCTRL
OPO[2]/GPO[10]/
RINGER
OPO[3]/GPO[11]
OPO[4]/GPO[12]/
SSTXD1
OPO[5]/GPO[13]
OPO[6]/GPO[14]
OPO[7]/GPO[15]
OPI[0]/GPIO[21]/
SSRXD1
OPI[1]/GPIO[22]/
SSSTAT1
OPI[2]/GPIO[23]/
SSCLK1

Data bus (8-bit).

123XT
Read strobe.
123XT
Write strobe.
123XT
ROM chip select.
123XT
I/O chip select.
123XT
SRAM chip select. (Battery powered.)
123XT
Modem chip select.
123XT
Indicates CPU op code fetch cycle (active high).
123XT
Indicates REGSEL cycle and DMA cycle.
123XT
Indicates current TSTCLK cycle is a wait state or a halt state.
123XT
DRAM row address select. (Battery powered.)
123XT
DRAM column address select. (Battery powered.)
123XT
DRAM write. (Battery powered.)
Prime Power Reset Logic and Test
HU
−
External non-maskable input (NMI).
HU
2XO
XFC3 Reset.
C
−
Sets Test mode (Battery powered).
Battery Power Control and Reset Logic
OSC
−
Crystal oscillator input pin.
−
OSC
Crystal oscillator output pin.
H
−
Used by external system to indicate loss of power to XFC3. (Results in NMI)
H
−
Battery power reset input.
−
1XC
(Battery powered.) Write protect during loss of VDD power.
Scanner Interface
−
2XS
Scanner shift gate control.
−
2XS
Scanner clock.
−
2XS
Scanner clock-inverted.
−
2XS
Scanner reset gate control (or clock for CIS scanner).
−
2XT
Flash memory chip select or Video Control signal.
−
2XT
Flash memory chip select or Video Control signal.
Printer Interface
−
3XC
Thermal Print Head (TPH) clock, or external DMAACK.
−
2XP
Serial printing data (to TPH).
−
3XP
TPH data latch.
−
1XP
Strobe signals for the TPH.
C
−
Sets strobe polarity, active high/low.
Operator Panel Interface
−
2XL
Keyboard/LED strobe [0] or GPO[8] or Scan Motor Power Control
Keyboard/LED strobe [1] or GPO[9] or Print Motor Power Control
Keyboard/LED strobe [2] or GPO[10] or RINGER

5–3

UX-258TH
FO-475TH

FC200 (IC2) Terminal descriptions
Pin Name

Pin No.

I/O

OPI[3]/GPIO[24]
LEDCTL
LCDCS

49
55
54

I/O
O
O

GPIO[0]
GPIO[1]/SASTXD
GPIO[2]/SASRXD
GPIO[3]/SASCLK
GPIO[4]/CPCIN
GPIO[5]/SSCLK2
GPIO[6]/SSTXD2
GPIO[7]/SSRXD2
GPIO[8]/FWRn

94
93
92
91
90
89
87
86
85

I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O

GPIO[9]/FRDn

84

I/O

GPIO[10]/SSSTAT2
GPIO[11]/BE/
SERINP
GPIO[12]/CS[2]n
GPIO[13]/CS[3]n
GPIO[14]/CS[4]n
GPIO[15]/CS[5]n
GPIO[16]/IRQ[8]
GPIO[17]/IRQ[5]n
GPIO[18]/IRQ[9]n
GPIO[19]/RDY/
SEROUT
GPIO[20]/ALTTONE

83
82

I/O
I/O

80
79
78
77
76
75
74
73

I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O

107

I/O

SM[3:0]/GPO[7:4]
PM[3:0]/GPO[3:0]
TONE

[103:106]
[115:118]
119

O
O
O

-Vref/CLREF

66

I

ADXG

68

I

ADGA
ADVA
ADGD
+Vref
VIN
THADI

69
70
72
71
67
65

I
I
I

VSS(12)

VDD(8)

VBAT
VDRAM

7,21,28,45,
53,56,64,88,
95,108,132,
134
14,32,41,48,
81,102,123,
140
63
114

Input

Output

Type

Type

Pin Description

Operator Panel Interface
2XC
(Pullup, Hysteresis In) Keyboard return [3] or GPIO[24]
4XC
Indicates outputs OPO[7:0] are for LEDs.
1XC
LCD chip select.
General Purpose I/O
H
2XC
(Hysteresis In) GPIO[0].
H
2XC
(Hysteresis In) GPIO[1] or SASTXD (for SERIF).
H
2XC
(Hysteresis In) GPIO[2] or SASRXD (for SERIF).
H
2XC
(Hysteresis In) GPIO[3] or SASCLK (for SERIF).
H
2XC
(Hysteresis In) GPIO[4] or Calling Party Control Input.
H
2XC
(Hysteresis In) GPIO[5] or SSCLK2 (for SSIF2).
H
2XC
(Hysteresis In) GPIO[6] or SSTXD2 (for SSIF2).
H
2XC
(Hysteresis In) GPIO[7] or SSRXD2 (for SSIF2).
H
2XC
(Hysteresis In) GPIO[8] or flash write enable signal for NAND-type flash
memory.
H
2XC
(Hysteresis In) GPIO[9] or flash read enable signal for NAND-type flash
memory.
H
2XC
(Hysteresis In) GPIO[10] or SSSTAT2 (for SSIF2).
H
1XC
(Hysteresis In) GPIO[11] or bus enable or serial port data input for
autobaud detection.
H
2XC
(Hysteresis In) GPIO[12] or I/O chip select [2].
H
2XC
(Hysteresis In) GPIO[13] or I/O chip select [3].
H
2XC
(Hysteresis In) GPIO[14] or I/O chip select [4].
H
2XC
(Hysteresis In) GPIO[15] or I/O chip select [5].
H
1XC
(Hysteresis In) GPIO[16] or external interrupt 8.
H
1XC
(Hysteresis In) GPIO[17] or external interrupt 5.
H
1XC
(Hysteresis In) GPIO[18] or external interrupt 9.
H
1XC
(Hysteresis In) GPIO[19] or ready signal or Serial port data output for
autobaud detection.
H
1XC
(Hysteresis In) GPIO[20] or ALTTONE.
Miscellaneous
−
1XC
Programmable: scan motor control pins or GPO pins.
−
1XC
Programmable: print motor control pins or GPO pins.
−
1XC
Tone output signal.
Power, Reference Voltages, Ground
-VR
−
Negative Reference Voltage for Video A/D or Reference Voltage for the
Clamp Circuit.
VXG
−
A/D Internal GND. (NOTE: This pin requires an external 0.22µF decoupling
capacitor to ADGA.)
VADG
A/D Analog Ground
VADV
A/D Analog Power
VADG
A/D Digital Ground
+VR
Positive Reference Voltage for Video A/D.
VA
−
Analog Video A/D input.
TA
−
Analog Thermal A/D input.
Power and Ground
Digital Ground
HU
−
−

Digital Power

Battery Power
DRAM Battery Power

5–4

UX-258TH
FO-475TH

(2) Panel control block
The following controls are performed by the FC200.

•

Operation panel key scanning

•

Operation panel LCD display

(3) Mechanism/recording control block
•

Recording control block diagram (1)

PANEL/LCD PWB

TELEPHONE
LINE
TONE/ALTTONE
TSTCLK
REGDMA
WAITN
SYNC
PWRDWNN

STRB[3:0]
STRBPOL
THADI
PDAT
PCLK
PLAT

RXIN
TXOUT

SPEAKER
MICROPHONE
CIRCUIT

LINE
INTERFACE

MIC
SPKR

PRINTER DATA
CONTROI &
SENSORS

TEST
BATRSTN
RESETN

OPO[7:0]*
OPI[3:0]*
LEDCTL*
LCDCS*

TXA
RXA

THERMAL HEAD

OPERATOR
PANEL,
KEYPAD,
LEDS & LCD

ANALOG
SWITCH
MOTOR

START
CLK2
CLK1
CLK1N
VIDCTL[1:0]

CIS
SCANNER
VIDEO
PREPROCESSING

SYNC PORTS (2)
(SSIF)

GENERAL
PURPOSE I/O

SYNC/ASYNC
SERIAL
PORT

SYSCLK
MIRON
MCSN
EXTENDED
FACSIMILE
CONTROLLER
FC200

VIN
+VREF
–VREF

SSCLK[2:1]*
SSTXD[2:1]*
SSRXD[2:1]*
SSSTAT[2:1]*

GPIO

SASCLK
SASTXD
SASRXD

RIN
SPKR

EXTERNAL BUS

SCANNER
CONTROLS &
SENSORS

RTC
CRYSTAL

SM[3:0]*

A[23:0]
D[7:0]
RDN
WRN
ROMSCN

A[4:0]
D[7:0]
RDN
WRN

MONOFAX
FACSIMILE
MODEM

RXDAT
TXDAT
RMODE
TMODE
CLKIN
SLEEPN

GPIO

WRPROTN
FRDN*
FRWN*
FCLE*
FCS[0:2]
DEBUGN
VDD
VDRAM
VBAT
VSS

XIA

GPIO

CAS[0,1]N,RASN,DWRN
CS[5:0]N*

RIN
SPKRLO
SPKRHI

PRINTER &
SCANNER
MOTOR DRIVERS

TXA2
TXA1

XIN
XOUT

PM[3:0]*

DRAM
(OPTION)

FLASH MEMORY

NOTES:*ALTERNATIVE GPO,GPI OR GPIO LINES
SPEAKERPHONE ONLY
VOICE OR SPEAKERPHONE

Fig. 4

5–5

UX-258TH
FO-475TH

(4) Modem (R96V24) block

FEATURES

INTRODUCTION

•

The Rockwell R96V24 MONOFAX ® facsimile modem family provides
9600 bps half-duplex capability with options supporting DigiTalk™ voice
and ADPCM audio codecs, DigiTalk™ full-duplex speakerphone, and
V.23 full-duplex. The modem models are identified in Table.
These functions are supplied in a single VLSI device or two-device set
(for speakerphone). The MDP (modem data pump) is packaged in a
100-pin PQFP. The MDP contains an internal integrated analog codec
(IIA) and is pin-compatible with the R96V24 MONOFAX modems.
This device family enables cost-effective development of a common facsimile machine design with digital answering machine and/or full-duplex
speakerphone.
The modem can operate at 9600, 7200, 4800, 2400, or 300 bps, and
can perform HDLC framing per T.30 at all rates. A programmable DTMF
detector, three programmable tone detectors, and Caller ID demodulator
are provided.
The DigiTalk™ V24 voice coder/decoder (codec) compresses voice at
an average rate of 2.9 kbps or at a fixed rate of 4.7 kbps with near toll
quality playback. An average rate of 2.9 kbps provides 24 minutes of
stored voice messages in 4 Mbits of memory. This voice codec allows
the host controller to efficiently store and playback digital incoming messages (ICMs) and outgoing messages (OGMs).
The ADPCM audio codec compresses audio signals (e.g., music/voice)
at 32 kbps or 24 kbps for highest fidelity coding and reproduction.
Selectable error correction coding allows storage in audio grade RAMs
(ARAMs). Echo cancellation techniques employed during playback allow DTMF and tone detection during voice/audio codec operation to
support user selectable features. The coder can record messages from
either the IIA or XIA. Dual/single tone transmission is available when the
decoder is disabled.

Group 3 facsimile transmission/reception
– ITU-T V.29, V.27 ter, T.30, V.21 Channel 2, T.4
– HDLC framing at all speeds
– Receive dynamic range: 0 dBm to –43 dBm
– Automatic adaptive equalization
– Fixed and programmable digital compromise equalization

•

V.27 ter short train

•

V.21 channel 2
– DTMF detect and tone detect

•

Caller ID reception
– Compromise equalizer

•

DigiTalk™ voice codec
– 24 minutes of voice storage per 4 Mbit memory
– Near toll quality voice recording and playback
– Programmable AGCs
– Error correction coding allows ARAM usage
– DTMF detect, tone detect, and tone transmit
– Pitch synchronized fast and slow playback
– Near-end echo cancellation

•

ADPCM audio codec
– High fidelity recording and playback of audio signals
– 32 kbps and 24 kbps
– Programmable AGC
– DTMF detect, tone detect, and tone transmit
– Near-end echo cancellation

•

5–6

8-bit or 16-bit high quality audio mode transmission/reception

UX-258TH
FO-475TH

R96V24 (IC1) Hardware Interface Signals
Pin Signals – 100-Pin PQFP
Pin No.
Signal Name
1
RS4
2
RS3
3
RS2
4
RS1
5
RS0
6
VDD1
7
D7
8
D6
9
D5
10
D4
11
D3
12
D2
13
D1
14
D0
15
WRITE
16
DGND1
17
RXOUT
18
RMODE
19
TSTROBE
20
TRESET
21
DGNDA1
22
NC
23
TMODE
24
TXDAT
25
AVDD
26
TALK
27
AGND1
28
TXA1
29
TXA2
30
DGNDA2
31
NC
32
NC
33
NC
34
NC
35
VAA1
36
SLEEP
37
AGND2
38
RIN
39
VC
40
VREF
41
NC
42
NC
43
DGNDA3
44
SPKR
45
VAA2
46
OH
47
POR
48
CLKIN
49
NC
50
IACLK
51
NC
52
CS
53
READ
54
GPI2
55
GPI3
56
GPI4
57
GPI5
58
VDD2
59
GPI6

Pin No.
Signal Name
60
GP17/RINGD
61
GPO7
62
GPO6
63
GPO5
64
GPO4
65
GPO3
66
DGND2
67
CTS
68
IRQ1
69
GPO2
70
GPO1
71
GPO0
72
RESET
73
XTLI
74
XTLO
75
XCLK
76
YCLK
77
VDD3
78
IRQ2
79
SR3IN
80
DGND3
81
DGND4
82
SR4IN
83
SR3OUT
84
EYESYNC
85
EYECLK
86
IA1CLK
87
SA1CLK
88
SR1IO
89
EYEXY
90
SR4OUT
91
NC
92
RLSD
93
DCLK
94
EN85
95
GPI0
96
RTS
97
DGND5
98
GPI1
99
TXD
100
RXD
Notes:
I/O type:
MI = Modem interconnect.
IA, IB, IC, ID = digital input.
OA, OB, OC, OD = digital output.
I(DA) = analog input.
O(DD), O(DF) = analog output.
NC = No external connection allowed.

I/O Type
IA
IA
IA
IA
IA
PWR
IA/OB
IA/OB
IA/OB
IA/OB
IA/OB
IA/OB
IA/OB
IA/OB
IA
GND
MI
MI
MI
MI
GND
MI
MI
PWR
OD
GND
O(DD)
O(DD)
GND

PWR
MI
GND
I(DA)
MI
MI

GND
O(DF)
PWR
OD
MI
MI
MI
IA
IA
IA
IA
IA
IA
PWR
IA

5–7

I/O Type
IA
OB
OB
OB
OB
OB
GND
OA
OC
OB
OB
OB
OA
I
O
OD
OD
PWR
OC
MI
GND
GND
MI
MI
OA
OA
MI
MI
MI
OA
MI
OA
OA
IA
IA
IA
GND
IA
IA
OA

UX-258TH
FO-475TH

[3] Circuit description of TEL/LIU PWB
(1) TEL/LIU block operational description
1) Block diagram
TEL/LIU PWB

CONTROL PWB
HS
CML
GAIN-C
TXCONT

TEL LINE

HS DETECTOR

TXOUT

H
L

EXT

SIGTX
1
0

RXIN

MODEM
(R96V24)

4053
1

0
1

CI DETECTOR

SIGRX

0

1 0
1
0

HANDSET
TELIN

TELOUT
VOL A
VOL B
VOL C
BZCONT
HOOK SW

SP AMP

0
1
TXCONT
4051
RXCONT

SPEAKER

MONITOR

GAIN-C

BZCONT
RCVOL

FC200
CML

SP MUTE
TEL MUTE

TEL MUTE

HS

CI

CI
RHS

+5V
+24
DG

Fig. 5

2) Circuit description

3) Block description

The TEL/LIU PWB is composed of the following 7 blocks.

1. Speech circuit section

1. Speech circuit section

•

2. Dial transmission section
3. Speaker amplifier section

The receiver volume is an electronic volume type, this model is
switch in 2 steps.

2. Dial transmission section

4. Ringer circuit section

•

D.P. transmission: The CML relay is turned on and off for control in
the DP calling system. (Refer to the attached sheet.)

•

DTM transmission: It is formed in the modem, and is output.

5. Externally connected TEL OFF HOOK detection circuit
6. CI detection circuit
7. Signal/DTMF transmission level & receiving level

3. Speaker amplifier section

•

The volume of the ringer sound/speaker sound is controlled with
3-bit signal of VOLA, VOLB and VOLC, and the sound switch is
controlled with BZ CONT.

4. Ringer circuit section

•

5–8

The ringer sound is formed in the tone of 1-chip engine when CI
signal is detected. The amplifier circuit drives the speaker of the
main body.

UX-258TH
FO-475TH
5. Externally connected TEL OFF HOOK detection circuit section

•

The following signals are used to control the transmission line of TEL/
FAX signal. For details, refer to the signal selector matrix table.

The circuit current detection is turned on together with OFF HOOK
of main body or OFF HOOK of externally connected TEL. ON of
CML OFF is judged as OFF HOOK of externally connected TEL.

[Control signals from output port]

6. CI detection circuit

•

Signal Name

CI is detected by the photocoupler which is integrated in series in
the primary side TEL circuit well proven in the existing unit.

Line connecting relay and DP generating relay
(The circuit is located H: Line make
in the TEL/LIU PWB.) L: Line break

7. Signal/DTMF transmission level & receiving level

SP MUTE

•

Signal transmission level setting: ATT 7 dB Circuit output: 7 dBm.

•

DTMF transmission level setting: HF -6.0 dBm
Thus, set the level.

•

Description

CML

(The circuit is located
in the TEL/LIU PWB.)

LF -7.0 dBm
TEL MUTE

Attenuation in the LIU section of the receiving level is degigned at
-6 dBm. (The modem and circuit error are not included.)

Speaker tone mute control signal
H: Muting (Power down mode)
L: Muting cancel (Normal operation)
Handset reception mute control signal
H: Muting
L: Muting cancel
Speaker volume control signal,

7. Signal selection

VOL A VOL B VOL C matrix
OUTPUT

VOL A

VOL B

VOL C

OH-HOOK
Receiving

X0
X1
X2
X3
X4
X5
X6
X7

L
H
L
H
L
H
L
H

L
L
H
H
L
L
H
H

L
L
L
L
H
H
H
H

—
—
HIGH
MIDDLE1
MIDDLE2
MIDDLE3
LOW
—

DTMF

ICM/OGM

VOL A
VOL B
VOL C
(The circuit is located
in the control PWB.)

OUTPUT RINGER BUZZER

X0
X1
X2
X3
X4
X5
X6
X7

•

TXCONT
(The circuit is located
in the control PWB.)

GAIN-C
(The circuit is located
in the control PWB.)

BZCONT
(The circuit is located
in the control PWB.)

5–9

—
—
—
HIGH
HIGH
—
—
MIDDLE1
—
—
—
MIDDLE2
MIDDLE
—
HIGH MIDDLE3
—
FIXED MIDDLE1
—
—
—
MIDDLE2 LOW
—
—
MIDDLE3
—
LOW
—
LOW
—

The volume settings of ON-HOOK receiving,
DTMF and ICM/OGM must be performed together. (The setting of RINGER must be performed separately.)

TXOUT mute signal
L: Signal sending, when transmitting
H: During reception, transmission mute,
(during standby)
Reception gain switching signal
H: When connected to line, 1: 1 gain
L: When not connected to line, HIGH gain
Speaker output signal switching
H: Buzzer signal output
L: When monitoring line signal

UX-258TH
FO-475TH
[Signals for status recognition according to input signals]

NO

Signal Name (CNLIU)

NO

Signal Name (CNLIU)

1

TELOUT

7

RXIN

L: The handset is in the off-hook state.

2
3

TELIN
TELMUTE

8
9

TXOUT
CML

Incoming call (CI) detection signal

4

CI

10

+24VA

H: The handset or external telephone is in the

5

HS

11

+5V

6

RHS

12

DG

Signal Name

Function
H: The handset is in the on-hook state.

RHS
CI

on-hook state.

HS

L: The handset or external telephone is in the
off-hook state.

[Other signals]
Signal Name

Function

TEL IN

Receiving signal from line or modem

TEL OUT

Transfer signal to line

SPOUT

Speaker output signal
Transmission (DTMF) analog signal output

TXOUT

from modem
Reception (DTMF, others) analog signal input

RXIN

into modem

(Example: TEL speaking)

TEL/LIU PWB

CONTROL PWB
HS
CML
GAIN-C
TXCONT

H
L

TXOUT

SIGTX

,,
,,,,,,,,,,,,,
,,
,,
,,
,,,,,,,
4053
0
,, ,,
,,
,,,,
,,
EXT
1 ,,,,,,
,,
,,
,,,,
,,
CI DETECTOR
0
,,
,,
,,,,,,
RXIN
0
,,
,,
SIGRX
1
,,
,,
,,
,,
,,
,,
1 0
,,
,,
,,
,,
1
,,
,,
HANDSET
,,
,,
0
,,
,,
,,,,
,,,,,,,
,,
TELIN
,,
,,
,,,,,,,
,,
,,
,,
,,
,,,,
,,
,,
,,
,,
,,
TELOUT
,,
,,,,,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
,,
,,,,,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
,,,,
VOL A
,,
,,
VOL B
,,
VOL C
,,
BZCONT ,,
,,
HOOK SW
,,
SP AMP
,,,,,,,,,
,,,,,,
,,,,,,,,,,,,,,,,,,,,
,,
,,,,,,,,,
,,,,,,
,,,,,,,,,,,,,,,,,, 0,,,,,,,
TEL LINE

HS DETECTOR

1

MODEM
(R96V24)

1

TXCONT
4051
RXCONT

SPEAKER

MONITOR

GAIN-C

BZCONT
RCVOL

FC200
CML

SP MUTE
TEL MUTE

TEL MUTE

CI

CI
RHS

,,,,,
,,,,,
,,,,,
,,,,,

+5V

TX/RX SIGNAL

+24

OGM/ICM/MEMO/PLAYBACK SIGNAL
OGM/MEMO/RECORD SIGNAL

DG

,
,
,,,
,,,
,

Fig. 6

5 – 10

HS

UX-258TH
FO-475TH

[4] Circuit description of power supply PWB
1. Block diagram

F1
T1.25A/250V
Noise
Filter
Circuit

AC IN

Rectifying
Smoothing
Circuit

Switching
Circuit
(RCC system)

F2
T1.25A/250V

Regulater
Circuit

+5V
+24V

F3
4A/72V

Photo Coupler
Fig. 7
The overcurrent protection is performed by bringing Q1 to OFF state
through detection of voltage increase in the auxiliary winding of T1 by
ZD2 and R9.

2-1. Noise filter circuit
The input noise filter section is composed of L and C, which reduces
normal mode noise from the AC line and common mode noise to the AC
line.

The overvoltage protection is performed by operating the overcurrent
protection circuit through destruction of zener diode ZD4 and shortcircuiting of load.

2-2. Rectifying/smoothing circuit
The AC input voltage is rectified by diode D1, 2, 3, 4 and smoothed by
capacitor C5 to supply DC voltage to the switching circuit section.

2-4. +5V circuit
Each DC voltage supplied by rectifying the output of transformer T1 with
diode D8 is stabilized by 3-terminal regulator IC1.

Power thermistor TH1 suppresses inrush current at power switch-on.

2-3. Switching circuit

2-5. VTH circuit

This circuit employs the self excited ringing choke convertor (RCC) system. In this system, the DC voltage supplied from the rectifying/smoothing section is converted into high frequency pulses by ON/OFF repetition of MOS FET Q1.

VTH output is supplied through the relay RY1.
Relay RY1 is operated by VTH-ON signal.

Energy is charged in the primary winding of T1 during ON period of Q1,
and discharged to the secondary winding during OFF period.
The output voltage is controlled by adjusting ON period of Q1 which
changes charge time of C9 through operation of photo-coupler PC1 from
+24V output.

[5] Circuit description of CIS unit
1. CIS

2. Waveforms

Cis is an image sensor which puts the original paper in close contact
with the full-size sensor for scanning, being a monochromatic type
with the pixel number of 1,728 dots and the main scanning density of
8 dots/mm.
It is composed of sensor, rod lens, LED light source, light-conductive
plate, control circuit and so on, and the reading line and focus are
previously adjusted as the unit.
Due to the full-size sensor, the focus distance is so short that the set
is changed from the light weight type to the compact type.

The following clock is supplied from FC200 of the control board, and
VO is output.
5ms
Approx.5V

øT

0V

2µs
CISCLK

VO

2V(TYP)
(White original paper)

Fig. 8

5 – 11

6–1

VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD

69
ADGA
72
ADGD
ADXG

OPI0
OPI1
OPI2
OPI3
LEDCTL
LCDCS
OPO0
OPO1
OPO2
OPO3
OPO4
GPO13/OPO5
GPO14/OPO6
GPO15/OPO7

C192
C193
C174
C175
C212
C190
C191
118
117
116 RA1
115 470x4
114
+5V
N.M.

DG
DG
DG
DG
DG
DG
DG

C202

E

DG
DG
DG
DG

52
KEN1A
CNPN-4
51
KEN2A
CNPN-3
50
KEN3A
RA6
CNPN-2
470x4
49
KEN4A
CNPN-1
55
L107 68
54 R221 0
E
CNPN-10
47
SEN0
R194 470
CNPN-15
46
SEN1
CNPN-14
44
SEN2
CNPN-13
43
SEN3
RA7
CNPN-12
470 x 4
SEN4
42
CNPN-11
40
C150
39
C170
38
C173
C172
C171
DG
C152

D

VREFCONT
BZCONT
GAINC
TXCONT
C145
C146
C149
C147
1000Px4

C105
C106
C103
C102

DG

VSS

C

C107
0.1

106
SM0
105
SM1
104
SM2
103
SM3

L

DG

F

DG

C154 22P +VREF
–VREF
VIN
THADI
BZOUT
C130 100P
TPA
TPB
TPA
RA2 TPB
270 x 4

B

VSS
GPO0
GPO1
GPO2
GPO3
VDRAM

R168
10M

59
71
66
67
65
119

DG

VSS

A

STRB3
STRB2
STRB1
STRB0
PCLK
PDAT
PLAT
STRBPOL

N M

XIN
+VREF
–VREF/CLREF
VIN
THADI
TONE

N.M.

33
34
35
36
29
30
31
37
R170
10K

DG

DG

DG

DG

A23
A22
A21
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0

G

C5
10/50

G

DG

128
127 H
120
122
57
121
126
124
125
113
112
111
109
110

1
2
3
4
5
6
8
9
10
11
12
13
15
16
17
18
19
20
22
23
24
25
26
27

C7
4.7/50

RD
WR
ROMCS
CS1
CS0
MCS
SYNC
REGDMA
WAIT
RAS
CAS0
CAS1
DWR
WRPROT

R148
100K

BATRST 61

1

R222 270
R223 270
R195 270
R196 270
R250 270
R251 270
R249 270

VSS

30Px7

C128
18P

VSS

2

C118
18P

R120 470
R106 470

VIDCTL0/FCS1
VIDCTL1/FCS2
CLK1
CLK1
CLK2
START

DG

TSTCLK
SYSCLK
MIRQ
RESET
DEBUG
TEST

STRB4
STRB3
STRB2
STRB1
PCLK
DATA
LATCH

DG

DG
C217 DG
100P
DG

ΦT

CISCLK
ΦT

96
97
100
99
98
101

DG

D0
D1
D2
D3
D4
D5
D6
D7

CNTH-12
CNTH-11
CNTH-4
CNTH-3
CNTH-14
CNTH-15
CNTH-13

CNCIS-5
CNCIS-4

R119
270

C132 N.M.

IC2
FC200

VSS

R121
3.3K

10K

R123
30K

10K

VSS

R238 470
R254 470
R153 470

R125 470
R169 470
RA3

VSS

3

4

10K

ADVA

RA3

70

R226 470
R150 270
R151 270

68

R149 470

14
32
41
48
81
102
123
140

10K

21

10K

28

R114 470

45

RA3

53,56

GPIO20
GPIO19
GPIO18
GPIO17
GPIO16
GPIO15
GPIO14
GPIO13
GPIO12
GPIO11
GPIO10
GPIO9/FRD
GPIO8/FWR
GPIO7
GPIO6
GPIO5
GPIO4
GPIO3
GPIO2
GPIO1
GPIO0

64,88

R105 470

107
73
74
75
76
77
78
79
80
82
83
84
85
86
87
89
90
91
92
93
94

DG

95,108

SPMUTE
(6-2H)
CSWI
(4-4C)
MDMRST
(3-3B)
CUT1I
(4-4C)
VTHON N.M.
(5-5F)
R239
MPXB
N.M. CNLIUB-4
FREADY
(2-4G)
FRD
(2-4G)
FWR
(2-5G)
FRSNSI
(4-4C)
ORGSNSI
N.M. (4-5C)
PSNSI
C157 (4-3C)
RXCONT
(6-3A)
DG
DRSNSI
(4-5C)
CML
CNLIUA-9
TELMUTE
CNLIUA-3
MONITOR
(6-3A)
C219
FCS1 100P
(2-4G)

R235 470
R146 470
R171 270
R152 270

DG

132

HS
CI
FCLE
FALE

DG

C104
0.1

7,134

CNLIUA-5
CNLIUA-4
(2-5G)
(2-5G)

DG

C129
0.1

130
SYSCLK
133
MIRQ R107
R117 135
10K
10K 131
129
58
R108
10K

C123 DG
0.1

144
143
142
141
139
138
137
136

5

RA3
10K
10K

DG

C158
0.1

C119
0.1

R154 C120
10K 1000P

F

RA4
270x4

DG

DG

C121
0.1

C133
0.1

C156
0.1

E

RA5
270x4

R197
100P

C155
1

+5V

D

D0
D1
D2
D3
D4
D5
D6
D7

R199
100P

+5V
C151
0.1

C
(3-2G)
(3-3B)

6

B

[1] Control PWB circuit
Main control block

A

I
K
J

R127
270

R155
200

R128
270

C122
15P

R126
100

A17
R157 270
A16
R156 270
RA11 270x4 A15
A14
A13
A12
RA10 270x4 A11
A10
A9
A8
RA9 270x4 A7
A6
A5
A4
RA8 270x4 A3
A2
A1
A0
R124
100

A
B
C
D
E
F

A[17~0]

D[7~0]

H

RD
WR
ROMCS
C194
15P CE1
DG
MCS

H

I

(2-4D)
(3-4B)

(2-3A)(3-4B)
(2-4D)(3-4B)
(2-4A)

(2-6A)(3-6B)

1/6

(2-6A)(3-6B)

I

1

2

3

4

5

6

UX-258TH
FO-475TH

CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT

VBAT

63
VBT
C131 2200P
62
RESET
(4-1D)
PWRDWN
C153 22P
60
XOUT
X3
32.768kHz
(5-4D)
(5-4D)
(5-5D)
(5-2H)
(6-1H)

(5-5F)
(5-5F)
(5-5F)
(5-5F)

(5-2A)
(6-3H)
(6-4A)
(6-6A)

6–2

1

2

3

4

5

6

A

(1-3I)

(1-3I)

(1-6I)

(1-5I)

RD

ROMCS

D[7~0]

A[17~0]

Memory block

A

A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0

B

B

30
2
3
29
28
4
25
23
26
27
5
6
7
8
9
10
11
12
22
24

A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
E
G
21
20
19
18
17
15
14
13

GND

16

31
PGM
32
VCC
1
VPP

DQ8
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1

IC8
27C020

+5V
C189
0.1

C

DG

C

(1-3I)
(1-3I)
(4-1D)

D7
D6
D5
D4
D3
D2
D1
D0

D

CE1
WR
CE2

VBT

D

R176
22K

R177
N.M.

A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0

R158
0

20
27
22

1
26
2
23
21
24
25
3
4
5
6
7
8
9
10

E

CS1
WE
CS2/OE

A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
VSS

VDD

IO8
IO7
IO6
IO5
IO4
IO3
IO2
IO1

14

28

19
18
17
16
15
13
12
11

IC7
W24257S-70LL

E

DG

C161
0.1

VBT

D7
D6
D5
D4
D3
D2
D1
D0

F

F

(1-3A)

(1-4A)

(1-4A)

(4-1D)

(1-4A)

(1-5A)

(1-5A)

4

FWR

FCS1

FRD

FREADY

CE

RE

R/B

WP

WE

ALE

CLE

27
26
25
24
21
20
19
18

40
GND
1
VSS
22
VSS

44
VCC
23
VCC

1/O 7
1/O 6
1/O 5
1/O 4
1/O 3
1/O 2
1/O 1
1/O 0

IC9
KM29N040T
(44PIN TSOP)

G

43

42

41

5

3

FALE

CE2

2

FCLE

G

DG

C195
0.1

+5V

H

R198 150
R200 150
R197 150
R199 150
R225 150
R228 150
R224 150
R227 150

H

D7
D6
D5
D4
D3
D2
D1
D0

2/6

I

I

1

2

3

4

5

6

UX-258TH
FO-475TH

6–3

A

B

C

R104
N.M.

R256
R112

R109 270
R144 270
R145 270
R111 270
C221
C220
C203

MPXC
MPXA
LEDON
E-RELAY
RCVOL
VOLA
VOLB
VOLC

1

R103 270

MAG

N.C. R102
N.C.
MAG

DG
DG
DG

D

C115
5P

XTLI 73
C101
1000P

E

L100
3.3µH

R113
0

DG

R263
470

C114
5P

XTLO 74

DG

YCLK
X1
49.92MHz

N.C.
N.C.
N.C.

N.M.

EYESYNC 84
85
EYECLK
89
EYEXY

DG

71
70
69
65
64
63
62
61
R142
10K

66 DGND2

R265
N.M.

GP00
GP01
GP02
GP03
GP04
GP05
GP06
GP07

DG

76
75
XCLK
94
EN85
36
SLEEP

N.M.

DG

C108
15P
DG

X2
16MHz

IC3
HCU04

3

4

F

DG

C109
15P

R131
150

R132
150

R130
1M

IC3
HCU04

6

DG

L104
100

40
39
83
82
44

TXA1 28
TXA2 29

VREF
VC
SR3OUT
SR4IN
SPKR

5

38

25
35
45
21
30
43
27
37

46
OH
26
TALK

RIN

AGND2

AVDD
VAA1
VAA2
DGNDA1
DGNDA2
DGNDA3
AGND

20
87
19
86
48
50
24
90
17
79
18
23
88

N.M.
R264

MAG

C127
0.01

C116
1

L101
0

C117
0.1

F

TRESET
SAICLK
TSTROBE
IAICLK
CLKIN
IACLK
TXDAT
SR4OUT
RXOUT
SR3IN
RMODE
TMODE
SR1IO

2

GPI0
GPI1
GPI2
GPI3
GPI4
GPI5
GPI6
GPI7

R100

DCLK
RLSD
CTS
RXD
RTS
TXD

72
RESET
47
POR

DG

+5V

VDD3

(1-5A)

R115
33K

N.C.

C112
1

L102
0

C110
0.1

81
DGND4
80 DGND3

R147
10

R110
10

CS
READ
WRITE
IRQ1
IRQ2

95
98
54
55
56
57
58
60
VDD1

IC1
R96V24

C144
1

DG

+5V

58
VDD2
97
DGND5
16
DGND1

52
53
15
68
78

N.C.
N.C.
93
92
67
100
96
99
N.C.
N.C.
N.C.
N.C.
N.C.

MDMRST

MCS
RD
WR
MIRQ

C126
0.1
L105
0

+5V

6

D7
D6
D5
D4
D3
D2
D1
D0

10K

R143
10K

+5V

N.C.
77

7
8
9
10
11
12
13
14

RS4
RS3
RS2
RS1
RS0

R266
10K

RA3

DG
R255
470

E

51,91
42,49
34,41
32,33
22,31

3

(1-3I)
(1-3I)
(1-3I)
(1-6F)

D7
D6
D5
D4
D3
D2
D1
D0

1
2
3
4
5

R116
10K

DG
R122
470

C196
100P

C218
1000P

D

N.C.
N.C.
N.C.
N.C.
N.C.

4

A4
A3
A2
A1
A0

+5V

C

RHS
RANK

5

D[7~0]

A[4~0]

B
CNLIUA-6
CNTH-6

6

Modem block

A

C135
100P

R129
0

N.C.
N.C.
N.C.

N.C.

N.C.

DG

IC3 7
HCU04

14

(1-6F)

1,9,11,13

SYSCLK

G

C1
10/16

C2
10/16

D100
1SS355

D101
1SS355

MAG MAG

C100
0.1

R101
15
C3
47/25

C111
0.1

MAG

+5V

MAG DG

C113
1

G

C134
1

+5V

H

L103
68Ω

L106
0Ω

M.N.

+5V

(6-4A)
(6-4A)

(6-3A)

C136

DG

TXA1
TXA2

RIN

H

I

3/6

I

1

2

3

4

5

6

UX-258TH
FO-475TH

N.M.

CNLIUB-5
CNLIUB-3
(5-5F)
CNLIUB-6
(6-2A)
(6-2H)
(6-2H)
(6-1H)

6–4

A

+5V

CNCUT1-1

CNCSW-1

CNPN-9

DG

CNPN-8

+5V

CUT1

CSW

FRSNS

C226
100P

C205
100P

C137
1

+5V

RP1
ITR9606

R133
220

DG

C138
100P

DG

DG

C209
100P

C160
2200P

DG

2

1

GND
3

SUB

MRST

VCC

5

IC12
2902

4

B

R135
10K

R134
1K

PSNS

R141
270

R219
270

R220
270

DG

C204
0.1

R173
270

8

IC100
PST596CNR

4

3

DG DG

2

1

DG

C125
2200P

DG

C206
2200P

DG

C210
2200P

DG

4
9 –
10 + B
11

R193
5.6K

R192
3.3K

DG

DG

R191
270

DOOR

DG

SW
DOOR SW

ORGSNS

R189
30K

+5V

B

OUT

1

2

3

4

5

6

Other block

A

(1-4A)

(1-4A)

(1-5A)

(1-4A)

(1-4A)

(1-4A)

C

Q100
2SC2412K

C

DG

E
R136
4.7K

B

PSNSI

CUT1I

CSWI

FRSNSI

DRSNSI

ORGSNSI

C

RESET

CE2

(1-1F)

D

(2-4D)(2-5G)

D

CNPW-4
CNPW-5
CNPW-6

CNPW7

CNPW-1

CNPW-2

HOLBAT-3

HOLBAT-2

HOLBAT-1

E

E

MG
MG
MG

+24V

C255
0.1

DG

+5V

DG

BT+

BT+

N.M.

R257

F

F

DG

R2
10(1/4W)

C231
0.1

C215
0.1

BAT1
CR2032

DG

MG

R260

FG

G



MG

+24VA

DG

N.M.

R259

C12
100/50

DG

+5V

R258

DG

C10
22/50

+24V

C9
47/25

+5V

R247
5.6K

D102
RB705D

G

C223
0.1

DG
+5V

H

DG

C224
1000P

+24VA

DG

DG

DG

DG

DG

+5V
C148
1000P
DG

C222
1000P

DG

VBT

H

CNLIUA-10

CNCSW-2

CNCUT1-2

CNPN-6

CNPN-5

CNLIUA-12

CNPN-7

CNLIUA-11

I

4/6

I

1

2

3

4

5

6

UX-258TH
FO-475TH

1

2

3

4

5

C

A

(1-1E)

CNCIS-1

(5-5H)

B

B

LEDON

DG

E

R215
10K

R244
30K

DG

B

+24V

DG

R218
30K

12
13

+5V

C

R242
200

B

14

C159
1000P

IC12
2902

IC11
2902

8

Q101
2SC2412

R172
1.5K

DG

E

C

9 –
10
A
+

R245
33K

+5V

Q102
2SA1037

+5V

DG

C

E

R211
30K

Q103
RNC1402
B
C

DG

R174
10K

VREFCONT

DG

ZD1
MTZJ5.6B

VO



R175
5.1K

+5V

B

C167
1

R243
0

DG

DG

DG

C169
1000P
DG
GLED
C229
100P
DG

R1
27(1W)

D

N.M

CNCIS-6

CNCIS-7

CNCIS-2

CNCIS-3

(1-1F)

(1-1F)

(1-1F)

R190

C168
1000P

+24V



D

+5V

VREF–

VREF+

VIN

Q1
E 2SD1858

C



Video processing/Motor drive / Thermal block

B

–

6–5
+

6

A

E

E

(1-4A)
(3-1D)

(1-1E)
(1-1E)
(1-1E)
(1-1E)

F

DG

1
2
3
4
5
6
7
8

+24V

VTH
VTH
VTH

+5V

1B
2B
3B
4B
5B
6B
7B
E

COM
1C
2C
3C
4C
5C
6C
7C

IC13
ULN2003A

CNPW-8
CNPW-9
CNPW-10

MG

C208 C188
DG

N.M

VTHON
LEDON

TPA
TPB
TPA
TPB

F

G

MG

R252
470K

FU100
ICPS07

C13
10/50

MG

C214
0.1

LEDON

R248
22K

ZD2
1N4748A

MG

MG

R253
20K

9
16
15
14
13
12
11
10

G

TPAD
TPBD
TPAD
TPBD

DG

C216
100P

H

CNTH-10

CNTH-7
CNTH-8
CNTH-9

CNTH-1
CNTH-2
CNTH-16

CNPW-3

CNMT-1
CNMT-2
CNMT-3
CNMT-4

CNMT-5
CNMT-6

(1-1F)
CNTH-5

C228
0.1

+5V

THAD1
TH1

N.M

C8
MG

DG

C211
1000P

MG
MG
MG

DG

C213
1000P
DG

VTH
VTH
VTH

(5-1B)

VTHON

DG

C207
1000P

VMT
VMT

H

I

5/6

I

1

2

3

4

5

6

UX-258TH
FO-475TH

6–6

1

2

3

4

5

6

B

(6-5A)

(3-1D)

(1-3A)

(1-4A)

(3-4H)

(1-1D)

(3-3H)
(3-3H)

(6-2A)

(1-1D)

A

C140
0.1

ALARM

RCVOL

MONITOR

RXCONT

RIN

GAINC

TXA1
TXA2

ALARM

TXCONT

4

C

5

3

R213
33K

B

DG

+5V

R246
33K

9

0

1

IC6
4053

C182
0.22

C179
0.22

R118
10K

Analog signal block

A

C184
1

N.M.

+5V

VREF

N.M.

C

N.M.

C162

R179
10K

C198
0.1

C176
0.1

– 2
B + 3

IC12
2902

R205

1

DG

C178
0.01

R180
3.3K

C177
0.1

VREF

15

4

14

IC10
4053

R233
20K

R203
10K

R234
20K

14

IC6
4053

R217
10K

IC11
2902

VREF

DG

7

R209
39.2K

C163
1000P

6
–
A
5
+

C185
1000P

R202
33K

R206

R204
4.7K

C165
0.1

– 6
B + 5

IC12
2902

R214
68.1K

R208 8.2K
R207 8.2K

DG

R188
3.3K

7

R212
5.6K

C186
2200P

C

C

0

1

1

0

0

1

D

DG

R165
3.9K

12

13

3

5

R210
10K

DG

C183
1

R231
N.M.

R201

VREF

IC10
4053

12

R166
0

C200

DG

13 –
A
12
+
11

R240
47K

4
14

1

N.M.

DG

TELIN

C232
0.1

R241
1.5K

E

C181
0.1

+24VA

IC11
2902

CNLIUB-1

CNLIUA-7

CNLIUA-8

CNMIC-1
CNMIC-2

IC11
2902

C201
1000P

R232

N.M.

+5V
R236

CNLIUA-1

EXSIG

2 –
A
3
+

R237
68K

R163
N.M.

E

CNMIC-3

RXIN

TXOUT

DG
DG

VREF

TELOUT

N.M.

R229

MICIN

C143
0.1

C166
N.M.

R167
13 68.1K

DG

1

R187
47K

R216
1K

C187
473C

C227

2

R230
20K

11

9

11

IC6
4053

1

0

10

N.M.

D

R183
470K

R159
330K

IC10
4053

F

15

R160
100K

R182
47K

R181
220K

10

R184
33K

VEE 6
GND 7
8

ENABLE

VCC 16

IC10
4053

1

0

N.M.

CNLIUA-2

1

2

C11

F

R137
10K

R185
1M

R186
20K

DG

4

2

5

1

12

15

14

13

X7

X6

X5

X4

X3

X2

X1

X0

R178
10K

C180
0.1

+5V

C124
0.01

G

X

DG

R139
1.5K

A 11
B 10
C 9

DG

6,7,8

+5V

DG

C142
4700P
DG

C4
1/50

4 –
2
3 +

R140
10K

DGDG

C6
4.7/50

C139
0.1

7
8

6

16

IC4
MC34119

GND

VCC

IC6
4053

R164
100K
C230 R161
0.1
3K

VDD 16

IC5
4051

G

8

5

SP–

BZOUT

VOL A
VOL B
VOL C

I

I

(1-1F)

(3-1C)
(3-1C)
(3-1C)

(1-5A)

CNSP-2

CNSP-1

(1-1E)

6/6

SP+

R162
150K

C141
330P

BZCONT

SPMUTE
R138
10K

7

DG

H

1

6

+5V

C164
0.1

+5V

H

1

2

3

4

5

6

UX-258TH
FO-475TH

UX-258TH
FO-475TH

Control PWB parts layout (Top side)

6–7

UX-258TH
FO-475TH

Control PWB parts layout (Bottom side)

6–8

6–9

1

2

3

4

5

6

B

A

MJ2-4

MJ2-3

MJ1-4

MJ1-3

3

4

3

4

ARG

VA2

C9
1000P

C10
1000P

B

L2

L5

L4

HS

CI

N.M.

N.M.

L3

ERZV5D471x2

VA1

HOOK SW

PC1
PC814

PC2
TLP521-1

EXT-R

EXT-T

RING

AR1
RA391PV62

TIP

[2] TEL/LIU PWB circuit

A

RHS
CNLIU-6

CNLIU-5

CNLIU-4

N.M.

N.M.

C

R3
30

R4
91

ZD2
HZ2C1

C

PC1
PC814X

ZD1
HZ2C1

E

CNLIU-11

CNLIU-12

CNLIU-10

CNLIU-9

D

CML

C

CML

B

R23
1K

E

R6
43K

D3
1SS270

CML

C6
22/50

DG

D4
1SS270

E

N.M.

C21

PC2
TLP521-1

R5
22K (1/2W)

ZD3
HZ27

R18
1K

C2
1.5

Q3
DTC114

B

M

1

2

VREF

+5V

+24V

+24V

C5
0.01

R8
JP

NOTE:
These marks are all safety-critical parts.

D

T1
2128

3

4

C8
0.033

F

C19
0.022

R15
3.3K

7

IC1
2904

6

4

8

+5V

+

–

E

IC1
2904

C16
1000P

G

R1

+5V

G

R2
150
N.M.

B
E

C12
4.7/50

D1
1SS270

VREF

1
R22
3.3K

L1

L7
N2024

H

TELIN

RX

RX

TX

C1
2200P

TX

TELOUT

RX IN

TXOUT

TEL MUTE

N.M.

N.M.

+5V

H

D2
1SS270

L6

R13
1.5K
R11
1.5K

R17
10K

IC1
2904

2–
3+

C4
2200P

C11
4.7/50

C14
4.7/50
C13
0.47/50

C3
2200P

R9
10K

Q2
2SC1815 Q

R7
JP

R12
1K

C20
N.M.
R16
10K

R10
10K

R20

R19
15K

VREF

VREF

N.M.

R21
620

C17
220P

Q1
DTC114
C
B

C15
1000P

+ 5

–

C18
1500P

C7
4.7/50

R14
36K

ZD4
HZ2C1
ZD5
HZ2C1

F

CNLIU-3

CNLIU-2

MJTEL-2

MJTEL-3

MJTEL-4

MJTEL-1

CNLIU-1

CNLIU-7

CNLIU-8

I

I

1

2

3

4

5

6

UX-258TH
FO-475TH

UX-258TH
FO-475TH

TEL/LIU PWB parts layout

6 – 10

6 – 11

1

A

F1
T1.25A/250V

C20
2200P

3

AC N

AC L

B

F2
T1.25A/250V

D2

1

CN1

D1

R1
560K

C1
0.1

V1
470V

L1

C2
0.1

D4

C5
68/400

R4
100

C9
0.068

C

Q1
FS5KM-18A

C7
220P

Q2
2SC2655-Y

Q4
2SC1741ASQR

R3
15K

R2
0.33(2W)

C

3

4

D6
IS2076A

C14
1000P

D

R8
820

R16
820

D5
05NU42

(1)

C13
2200P

(4)

(3)

(2)

C6
1500P

R11 R9
560 560

PC1
PC123FY8

R10
33

C8
4700P

R6
560K

R5
560K

R7
220K(2W)

D

ZD2
RD3.3ESAB2

2

C3
1000P

C4
1000P

D3

RL1N4005 x 4

TH1
M16007C

[3] Power supply PWB circuit

B

T1

(8)

(7)

(6)

(5)

E

C15
680/35

D8
SR140

C16
2200P

D7
S3L20U-4004P15

E

N.M.

F

C18
470/16

R19

F

ZD3
RD6.2ESAB2

3

4

5

6

A

2

1

IN

2

OUT
GND

3

IC1
NJM78M05FA

C17
1000P

Q3
2SC1740S

R12
2.2K

PC1
PC123FY8 1

FB1

G

R13
270

G

C19
1/50

R15
2.4K

VR1
470

R14
6.8K

F3
CCP2E100

H

D9
IS2076A

RY1
AJS3312

H

CN2

1

2

4

5

6

3

8

9

10

7

DG

+5V

MG

MG

MG

VTH-ON

VTH

VTH

VTH

VM

I

I

1

2

3

4

5

6

UX-258TH
FO-475TH

ZD4
RD30FB3

C10
1000P
C11
1000P

UX-258TH
FO-475TH

Power supply PWB parts layout

6 – 12

6 – 13

C2
0.022
R8
1K

R1
6.2K

VO

A
SG266
ORGSNS K

R7
220
C
E FRSNS

DELETE

PLAY

REPEAT

R9 100K

R2 100K

R11 100K

R12 100K

R6 100K

A

B

C

D

ORGSNS

E

FRSNS

CNPN-9

CNPN-8

REC

#

F

SPEAKER

CNPN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

09

KEN 4A
KEN 3A
KEN 2A
KEN 1A
GND
GND
+5V
ORGSNS
FRSNS
E
SEN4
SEN3
SEN2
SEN1
SEN0

G

10

0

START

08

07

HOLD

9

8

04

COPY

03

06

SPEED

05

3

G

REDIAL

2

F

6

02

CNLCD-6
CNLCD-5
CNLCD-3
CNLCD-2
CNLCD-1

E

5

STOP

REMINDER

01

+5V

UP

DOWN

RECEPTION

RESOLUTION

D

FUNC

R10 100K

Note: Since the parts of this PWB can not be supplied, change it as a unit.

C1
22/50

8

GND

11
12
13
1
2
3
4
5
10

R4 100K

+5V
GND
GND

E

16

+5V

D2
1SS270

D5
1SS270

D4
1SS270

D3
1SS270

D1
1SS270

VCC
9
A0
D1
7
A1
D2
6
A2
D3
14
A3
D4
15
D5
N.C.
D6
D7
D8
D9

IC101
74HC147

KEN 1A
KEN 2A
KEN 3A
KEN 4A

SEN4

RS

SEN3

LD7

SEN2

LD6

SEN1

LD5

SEN0

LD4

C

R3 100K

CNPN-7
CNPN-6
CNPN-5

CNPN-10

CNPN-4
CNPN-3
CNPN-2
CNPN-1

CNPN-11

CNLCD-4

CNPN-12

CNLCD-14

CNPN-13

CNLCD-13

CNPN-14

CNLCD-12

CNPN-15

CNLCD-11

[4] Operation panel PWB circuit

B

R5 100K

1

2

3

4

5

6

A

7

4

1

H

CNLCD
1
GND
2
+5V
3
VO
4
RS
5
GND
6
E
7
N.C.
8
N.C.
9
N.C.
10
N.C.
LD4
11
LD5
12
LD6
13
LD7
14

H

I

I

1

2

3

4

5

6

UX-258TH
FO-475TH

UX-258TH
FO-475TH

CHAPTER 7. OPERATION FLOWCHART
[1] Protocol
Receive side
G3 communication

Transmitter side
(Document inserted into
document sensor during
standby)

CED
To recording
position

CED
NSF
NSF
CSI
CSI
DIS
DIS
TSI

Document inserted to
the reading position
TSI

(DCS)

NSS
NSS

(DCS)

TCF
TCF
CFR

IMAGE
SIGNAL

IMAGE
SIGNAL

CFR

1st page

RTC

RTC

Next page insert
command

Cut line printed

MPS

MPS

MCF

IMAGE
SIGNAL

IMAGE
SIGNAL

MCF

RTC

RTC

EOP

EOP

Cut line printed

MCF

MCF

DCN

DCN
Recording papor ejected

7–1

Document ejected

UX-258TH
FO-475TH

[2] Power on sequence

START

CPU initialized
MODEM initialized

“WAIT A MOMENT” display

STOP key ?
NO
“MEMORY CLEAR ?” display

NO

3 sec ?
YES

1

YES

STAND-BY
START key ?
NO

2

YES

COPY key ?

1

2

“MEMORY CLEARED” display

“MEMORY CLEARED” display

Memory clear

Memory clear

STAND-BY

PROCESS CHECK MODE

NO
YES

STOP key ?
NO
3 sec ?

NO

YES
STAND-BY

7–2

UX-258TH
FO-475TH

CHAPTER 8. OTHERS
[1] Service tools
1. List
NO.

PARTS CODE

1
2

CPWBS2915SCS1
PSHEZ3354SCZZ

DESCRIPTION

PRICE
RANK
BN
AD

Q’TY

Relay board unit
Shading wave memory standard paper

1
1

Relay board unit

+5V
(TP2)

DG
(TP1)

R100
PSNS
(TP3)

NO.

PARTS CODE

1
2
3
4
5
6
7
8
9
10
11

CCNW–4756SC01
CCNW–4757SC01
CCNW–4758SC01
CCNW–4759SC01
CCNW–4760SC01
CCNW–4761SC01
CCNW–4763SC01
QCNW–4764SCZZ
VHPRPi–574///
V R S – TS 2AD 2 2 1 J
QPWBS2915SCZ4

DESCRIPTION
SPEAKER RELAY CABLE
PANEL RELAY CABLE
CIS RELAY CABLE
HEAD RELAY CABLE
CAM SWITCH RELAY CABLE
CUTTER SWITCH RELAY CABLE
MOTOR RELAY CABLE
PAPER SENSOR RELAY CABLE
PHOTO TRANSISTOR [PSNS]
RESISTOR (1/10W 220Ω ±5%)[R100]
EXTENSION PWB

PI1

Q’TY
1
1
1
1
1
1
1
1
1
1
1

8–1

PRICE
RANK
AK
AW
AQ
AX
AK
AK
AP
BB
AF
AA
AR

UX-258TH
FO-475TH

2. Description
2-1. Relay board unit
1. Remove the TEL/LIU PWB, control PWB and Power Supply PWB
from this unit, and mount the relay board unit instead.

•

Before connecting the wiring to the relay board unit, set the test
PWB switches to the fixed position.

2. The setting is as follows.

• The relay cables are used as one pair.
• The sensor is wired as shown in the following figure.
• The door swich and hook switch are manually operated.

Relay
cable

12
CNLIUA
1

CNLIU

The recording paper sensor (PSNS) is operated by OR of the mechanical unit switch and the test PWB switch. When performing installation in
the machine unit, set the test PWB switches to the fixed position.

TEL/LIU
PWB

Mechanical unit

PWB to be tested

Actual operation with mechanical unit

CNPW

POWER
SUPPLY
PWB

Recording paper
sensor

ON/OFF operation

Recording paper
sensor

OFF

PWB sensor check
ON/OFF operation

CHECK
CONTROL
PWB
CHECK
CONTROL
PWB

DON'T SEPARATE

NOTE

TEL/LIU
PWB

UNIT

RELAY CABLE

DOOR
SENSOR

EXTENSION PWB
POWER
SUPPLY
PWB

TP2(+5V)
TP1(DG)
TP3
(PSNS)

C

K

E

A

TP3
(PSNS)

OFF (Photo interrupter
is interrupted.)

These cables are connected from the extension board
and the checked control PWB at TP1 thru TP3 (signals
of DG, +5V and PSNS).

8–2

UX-258TH
FO-475TH

3. Shading paper
The white and black basis is applied to remember the shading waveform. Be sure to perform this operation when replacing the battery or
replacing the control PWB. Execute in the shading mode of DIAG mode.

UX-108/178 SERIES SHADING WAVE MEMORY STANDARD PAPER (PSHEZ3354SCZZ)

8–3

UX-258TH
FO-475TH

[2] IC signal name
CONTROL PWB UNIT
IC13: VHiULN2003AN/ (ULN2003A)

IC7: VHiW24257S7LL (W24257S-70LLT)

(TOP VIEW)

1C 2C 3C 4C 5C 6C 7C COM
16 15 14 13 12 11 10 9

1
2
3
4
5
6
7
1B 2B 3B 4B 5B 6B 7B

6A
13

6Y
12

5A
11

5Y
10

1

28 VCC

A12

2

27 W

A7

3

26 A13

A6

4

25 A8

A5

5

24 A9

A4

6

23 A11

A3

7

22 S2

A2

8

21 A10

Pin name

Signal

20 S1

A0~A12
CE1/CE2

Address input

A1

8
E

IC3: VHiMC74HCU04F(MC74HCU04F)

VCC
14

A14

9

A0 10

19 DQ8

DQ1 11

18 DQ7

DQ2 12

17 DQ6

DQ3 13

16 DQ5

GND 14

15 DQ4

2
1Y

3
2A

4
2Y

5
3A

Write enable

OE

Write enable

I/O1~I/O8

Data I/O

VCC

Power source

GND

Ground

N.C.

No connection

IC6, 10: VHiHCF4053M1T (HCF4053B)

4A
9

4Y
8

6
Controls

1
1A

Chip enable

WE

6
3Y

7
GND

Switches
In/Out

Inhibit

11

A

10

B

9

C

12

X0

13

X1

2

Y0

1

Y1

5

Z0

3

Z1

X

14

Y

15

Z

4

VDD: Pin 16
VSS: Pin 8
VEE: Pin7

8–4

Common
Out/In

UX-258TH
FO-475TH

IC11, 12: VHiLM2902D/-1 (LM2902D)

A OUTPUT

1

A-INPUT

2

A+INPUT

3

V+

B+INPUT

IC8: VHi27C02015Ti (27C020)
EP-ROM
14 D OUTPUT

A
– +

D

13 D-INPUT

+ –

11 GND

10 C+INPUT

5

6

B OUTPUT

7

32 VCC

A16 2

31 PGM

A15

30 NC

3

12 D+INPUT

4

B-INPUT

(TOP VIEW)
1

VPP

– +
B

+ –
C

9

C-INPUT

8

C OUTPUT

A12

4

29 A14

A7

5

28 A13

A6

6

27 A8

A5

7

26 A9

A4

8

25 A11

A3

9

24 G

A2 10

23 A10

A1 11

22 E

A0 12

21 DQ8

DQ1 13

20 DQ7

DQ2 14

19 DQ6

DQ3 15

18 DQ5

GND 16

17 DQ4

Pin name
A0~A16

Signal
Address input

E

Chip enable

G

Output enable

GND

Ground

PGM

Program

DQ1~DQ8

Data output (Program input)

VCC

+5V power

VPP

+12.5V power(*)

(*) Only in the program mode

IC5: VHiHEF4051BT1 (HEF4051BT)
6
Controls

Inhibit

11

A

10

B

9

C

13

X0

14

X1

15

X2

12

X3

1

X4

5

X5

2

X6

4

X7

IC4: VHiMC34119DR2 (MC34119DR2)
15 Common
Out/In

X

Switches
In/Out

VDD: Pin 16
VSS: Pin 8
VEE: Pin7

1

SUB

2

GND

3

1

8

VO2

FC2

2

7

GND

FC1

3

6

VCC

VIN

4

5

VO1

(TOP VIEW)

IC100: VHiPST596CMT1 (PST596CNR)

M/R

CD

5

VCC

4

VOUT

(TOP VIEW)
8–5

UX-258TH
FO-475TH

81 DGND4

82 SR4IN

83 SR3OUT

84 EYESYNG

85 EYECLK

86 IA1CLK

87 SA1CLK

88 SR1IO

89 EYEXY

90 SR4OUT

91 NC

92 RLSD

93 DCLK

94 EN85

95 GPI0

96 RTS

97 DGND5

98 GPI1

99 TXD

100

RXD

IC1: VHiR96FC20V24 (R96V24)

RS4

1

80 DGND3

RS3

2

79 SR3IN

RS2

3

78 IRQ2

RS1

4

77 VDD3

RS0

5

76 YCLK

VDD1

6

75 XCLK

D7

7

74 XTLO

D6

8

73 XTKI

D5

9

72 RESET

D4

10

71 GPO0

D3

11

70 GPO1

D2

12

69 GPO2

D1

13

68 IRQ1

D0

14

67 CTS
66 DGND2

WRITE 15
DGND1 16

65 GPO3

RXCONT

17

64 GPO4

RMODE

18

63 GPO5

TSTROBE

19

62 GPO6

TRESET

20

61 GPO7

DGNDA1

21

60 GPI7/RINGD

NC 22

59 GPI6

52 CS

DGNDA2

30

51 NC

8–6

IACLK 50

29

NC 49

TXA2

CLKIN 48

53 READ

POR 47

28

OH 46

TXA1

VAA2 45

54 GPI2

SPKR 44

27

DGNDA3 43

AGND1

NC 42

55 GPI3

NC 41

26

VREF 40

TALK

VC 39

56 GPI4

RIN 38

25

AGND2 37

AVDD

SLEEP 36

57 GPI5

VAA1 35

24

NC 34

TXDAT

NC 33

58 VDD2

NC 32

23

NC 31

TMODE

UX-258TH
FO-475TH

IC2: VHiR96FC20V24 (FC200)
PM1/GPO1

PM2/GPO2

PM3/GPO3

VDRAM

RASN

CAS0N

CAS1N

WRPROTN

DWRN

117

116

115

114

113

112

111

110

109

118

120

119

121

TONE

ROMCSN

122

PM0/GPO0

MCSN

123

124

VDDI

125

CSIN

WAITN

128

REGDMA

RDN

129

126

DEBUGN

130

127

TSTCLK

131

WRN

RESETN

132

SYNC

VSSO

134

133

138

VSSI

139

SYSCLK

D5

140

135

D4

141

MIRON

VDDO

142

136

D3

143

137

D2

144

D6

D1

D7

D0

A23

1

108

VSSO

A22

2

107

GPIO20/ALTTONE

A21

3

106

SM0/GPO4

A20

4

105

SM1/GPO5

A19

5

104

SM2/GPO6

A18

6

103

SM3/GPO7

VSSO

7

102

VDDI

A17

8

101

START

A16

9

100

CLK1

A15

10

99

A14

11

98

CLK2

A13

12

97

FCS2N/VIDCTL1
FCS1N/VIDCTL0

CLK1N

A12

13

96

VDDO

14

95

VSSI

A11

15

94

GPIO0

A10

16

93

GPIO1/SASTXD

A9

17

92

GPIO2/SASRXD

A8

18

91

GPIO3/SASCLK

A7

19

90

GPIO4

A6

20

89

GPIO5/SSCLK2

VSSO

21

88

VSSO

A5

22

87

GPIO6/SSTXD2

A4

23

86

GPIO7/SSRXD2

A3

24

85

GPIO8/FWRN

A2

25

84

GPIO9/FRDN

A1

26

83

GPIO10/SSSTAT2

A0

27

82

GPIO11/BE
/SERINP

VSSI

28

81

VDDO

PCLK

29

80

GPIO12/CS2N

POAT

30

79

GPIO13/CS3N

PLAT

31

78

GPIO14/CS4N

VDDI

32

77

GPIO15/CS5N

STRB3

33

76

GPIO16/IRQ8

STRB2

34

75

GPIO17/IRQ5N

STRB1

35

74

GPIO18/IRQ9N

STRB0

36

73

GPIO19/RDY
/SEROUT

ADGD

ADGA

72

ADXG

ADVA

69

VIN

+VREF

68

71

67

THADI

–VREF/CLREF

70

66

VSSI

65

64

VBAT

PWRDWNN

63

62

XIN

XOUT

TEST

BATRSTN

59

61

58

VSSO

CS0N

60

57

LCDCS/GPIO17

LEDGTL/GPIO16

56

55

OP10/GPIO21
/SSRXDI

VSSI

OP11/GPIO22
/SSTATI

54

53

52

OP12/GPIO23
/SSCLKI

VDDI

51

OPO0/GPO8

OP13/GPIO24

48

50

47

VSSO

OPO1/GPO9

49

46

OPO2/GPO10

VDDO

45

OPO5/GPO13

44

41

OPO6/GPO14

OPO4/GPO12
/SSTXD1

40

OPO7/GPO15

OPO3/GPO11

39

STRBPOL

43

38

42

37

TEL/LIU PWB UNIT
IC1: VHiNJM2904D-1 (NJM2904D)
OUTPUT 1

1

INVERTING INPUT 1

2

NON-INVERTING INPUT 1

3

VCC

-

–
+

–
+

4

8–7

8

+
VCC

7

OUTPUT 2

6

INVERTING INPUT 2

5

NON-INVERTING INPUT 2



---

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