MA8AA_SM_01_59 PCLXP46

User Manual: PCLXP46

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FILE NO.

SERVICE MANUAL

Multimedia Projector

Model No. PLC-XP46/XP46L
PLC-XP41/XP41L
U.S.A., Canada,
Europe, Asia, Africa

Original Version

PLC-XP46

PLC-XP41

Chassis No. MA8-XP4600
MA8-XP46L00
MB8-XP4100
MB8-XP41L00
NOTE: Match the Chassis No. on the unit’s
back cover with the Chassis No. in the
Service Manual.

Note:
Models PLC-XP46L and PLC-XP41L do not provide projection lens.

PRODUCT CODE
1 122 108 20 (MA8AA)
1 122 108 80 (MA8AM)
1 122 109 20 (PA8AA)
1 122 110 20 (MB8AA)
1 122 110 80 (MB8AM)
1 122 111 20 (PB8AA)

If the Original Version Service
Manual Chassis No. does not match
the unit’s, additional Service
Literature is required.You must refer to
“Notices” to the Original Service
Manual prior to servicing the unit.

REFERENCE NO. SM5110329

■ Contents
■
■
■
■
■

Safety instructions ________________________________________________3
Specifications __________________________________________________ 4
Note on Servicing ______________________________________________ 5
Adjustments after parts replacement ________________________________ 5
Circuit protections ______________________________________________ 6-7
● Fuse ____________________________________________________ 6
● Thermal switch ____________________________________________ 6
● Interlock switch ____________________________________________ 6
● Warning temperature and power failure protection ________________ 7
■ Mechanical disassemblies ______________________________________ 8-12
■ Optical parts disassemblies ____________________________________ 13-16
■ LCD panel/prism ass’y replacement ________________________________ 17
■ Lamp replacement ______________________________________________ 18
■ Optical adjustments __________________________________________ 19-21
● Contrast adjustment ________________________________________ 19
● Condenser adjustment ______________________________________ 20
● Relay lens adjustment ______________________________________ 21
■ Electric adjustments __________________________________________ 22-30
● Service adjustment menu operation ____________________________ 22
● Circuit adjustments ______________________________________ 23-27
● Service adjustment data table ______________________________ 28-33
● Test points and locations ____________________________________ 34
■ Troubleshooting ______________________________________________ 35-40
● No power ______________________________________________ 35-36
● No picture ____________________________________________ 37-38
● No sound ________________________________________________ 39
● Lens motor problems ______________________________________ 40
■ Control port functions ________________________________________ 41-45
■ Waveforms __________________________________________________ 46-47
■ Cleaning ______________________________________________________ 48
■ IC block diagrams ____________________________________________ 49-59
■ Service parts lists ____________________________________________ 60-92
● Electrical parts list ______________________________________ 60-85
● Mechanical parts list ____________________________________ 87-89
● Optical parts list ________________________________________ 90-92

Drawings & Diagrams ______________________________________ A1-A16
■
■
■
■
■
■

Parts description and reading in schematic diagram ____________________ A2
Circuit block diagram ____________________________________________ A3
Power supply lines ______________________________________________ A4
Schematic diagrams ________________________________________ A5-A12
Printed wiring board diagrams ________________________________ A13-A15
Pins description of ICs, transistors, diodes __________________________ A16

2

■ Safety Instructions
SAFETY PRECAUTIONS
WARNING:
The chassis of this projector is isolated (COLD) from AC line by using the converter transformer. Primary side of
the converter and lamp power supply unit circuit is connected to the AC line and it is hot, which hot circuit is identified with the line (
) in the schematic diagram. For continued product safety and protection of personnel
injury, servicing should be made with qualified personnel.
The following precautions must be observed.
1: An isolation transformer should be connected in the
power line between the projector and the AC line
before any service is performed on the projector.

DO NOT OPERATE THIS PROJECTOR WITHOUT
THE PROTECTIVE SHIELD IN POSITION AND
PROPERLY SECURED.

2: Comply with all caution and safety-related notes provided on the cabinet back, cabinet bottom, inside the
cabinet or on the chassis.

4: Before replacing the cabinet cover, thoroughly
inspect the inside of the cabinet to see that no stray
parts or tools have been left inside.

3: When replacing a chassis in the cabinet, always be
certain that all the protective devices are installed
properly, such as, control knobs, adjustment covers
or shields, barriers, etc.

Before returning any projector to the customer, the
service personnel must be sure it is completely safe to
operate without danger of electric shock.

PRODUCT SAFETY NOTICE
Product safety should be considered when a component replacement is made in any area of the projector.
Components indicated by mark
in the parts list and the schematic diagram designate components in which
safety can be of special significance. It is, therefore, particularly recommended that the replacement of there parts
must be made by exactly the same parts.

SERVICE PERSONNEL WARNING
Eye damage may result from directly viewing the light produced by the Lamp used in this equipment. Always turn
off Lamp before opening cover. The Ultraviolet radiation eye protection required during this servicing.
Never turn the power on without the lamp to avoid electric-shock or damage of the devices since the stabilizer
generates high voltages(15kV - 25kV) at its starts.
Since the lamp is very high temperature during units operation replacement of the lamp should be done at least
45 minutes after the power has been turned off, to allow the lamp cool-off.

CAUTION

DO NOT ATTEMPT TO SERVICING THE
REMOTE CONTROL UNIT.
Laser Beam may be leaked out when in disassemble
the Unit. As the Laser Beam used in this Remote control unit is harmful to the eyes.
3

LASER RADIATION
DO NOT STARE INTO BEAM
MAX. OUTPUT: 1mW
WAVE LENGTH: 650 ±20nm
CLASS II LASER PRODUCT
This product is complied with 21 CFR
part 1040.10

LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
LASER-STRAHLING
NICHT IN DEN STRAHL BLICKEN
LASER KLASSE 2
IEC60825-1, Am. 1 1997
MAX OUTPUT (
) : 1 mW
WAVE LENGTH (
) : 650±20nm

■ Specifications
Projector Type

Multi-media Projector

Dimensions (W x H x D)

12.6” x 6.6” x 18.5” (319mm x 168mm x 470mm) (PLC-XP46)
12.6” x 6.6” x 16.8” (319mm x 168mm x 429.5mm) (PLC-XP41/X46L/X41L)

Net Weight

18.5 lbs (8.4 kg) (PLC-XP46), 17.4 lbs (7.9 kg) (PLC-XP41),
15.7 lbs (7.1 kg) (PLC-X46L/X41L)

LCD Panel System

1.3” TFT Active Matrix type, 3 panels

Panel Resolution

1024 x 768 dots

Number of Pixels

2,359,296 (1024 x 768 x 3 panels)

Color System

6 color system (PAL, SECAM, NTSC, NTSC4.43, PAL-M and PAL-N)

High Definition TV SIgnals

480i, 480p, 575i, 575p, 720p. 1035i and 1080i

Scanning Frequency

H-sync. 15 ~ 100kHz, V-sync. 50 ~ 100Hz

Projection Image Size (diagonal)

Adjustable from 31” to 400”

Horizontal Resolution

800 TV lines (HDTV)

Projection Lens

F 1.7 ~2.0 lens with f=48.2mm ~ 62.6mm with motor zoom and focus (PLC-XP46)
F 1.8 ~2.1 lens with f=48.4mm ~ 62.8mm with motor zoom and focus (PLC-XP41)

Throw Distance

4.6’ ~ 48.3’ (1.4m ~ 14.7m) (PLC-XP45), 4.6’ ~ 47.3’ (1.4m ~ 14.4m) (PLC-XP40)

Motorized Lens Shift

Up and Down

Projection Lamp
Input 1 Jacks

275watts
DVI Terminal (Digital), HDB 15-pin Terminal (Analog) and Stereo Mini Type
Jack (Audio)
BNC Type x 5 (G or VIDEO/Y, B or Cb/Pb, R or Cr/Pr, H and V), Stereo
Mini Type Jack (Audio)
RCA Type x 3 (VIDEO/Y, Cb/Pb, Cr/Pr), RCA Type x 2 (Audio R and L) and
DIN 4-pin (S-Video)
DIN 8-pin (Control port), USB port (Series B receptacle), Wired Remote
Jack and Network Board Connector Jack

Input 2 Jacks
Input 3 Jacks
Other Jacks
Built-in Speakers

2 speakers Stereo (R and L), 2 watts RMS (T.H.D. 10%)

Feet Adjustment

0˚ to 10.5˚

Voltage and

AC 100 ~ 120V (4.8A Max. Ampere), 50/60Hz (The U.S.A and Canada)

Power Consumption

AC 200 ~ 240V (2.4A Max. Ampere), 50/60Hz (Continental Europe)

Operating Temperature

41 ˚F ~ 95 ˚F (5˚C ~ 35˚C)

Storage Temperature

14 ˚F ~ 140 ˚F (-10˚C ~ 60˚C)

Remote Control Transmitters

Wireless/Wired Remote Control, batteries AA, UM3 or R06 Type x 2

● The specifications are subject to change without notice.

This symbol on the nameplate means the product is Listed by Underwriters
Laboratories Inc. It is designed and manufactured to meet rigid U.L. safety standards against risk of fire, casualty and electrical hazards.

4

■ Adjustments after Parts Replacement
● : Adjustment necessary ❍ : Check necessary

Electrical Adjustments

Optical Adjustments

Disassembly / Replaced Parts
LCD/
Prism
Ass’y

Condenser
Lens

Condenser lens adjustment

❍

●

Relay lens adjustment

❍

Relay
Lens

Polarized glass
R

G

B

Power
Board

Sub Power
Board

Main Board

●

Contrast Adjustment
●

R-Contrast adjustment

●

G-Contrast adjustment

●

B-Contrast adjustment

Output voltage adjustment

●

+16 V adjustment

●

Video center adjustment

●

NRS adjustment

●

PC pedestal adjustment

●

Black level adjustment

●

PC gain adjustment

●

PC gamma shift adjustment

●

HDTV pedestal adjustment

●

HDTV A/D input adjustment

●

HDTV Gain adjustment

●

Video pedestal adjustment

●

Video A/D input adjustment

●

A/D offset adjustment

●

Video gain adjustment

●

Video gamma shift adjustment

●

Common center adjustment

●

●

White balance adjustment

❍

❍

5

■ Circuit Protections
This projector is equipped with the following circuit protections to operate in safety. If the abnormality occurs inside
the projector, it will automatically turn off by operating one of the following protection circuits.

● Fuse
The fuse is located inside of the projector. When either the LAMP
indicator or the READY indicator is not illuminated, fuse may be
opened. Check the fuse as following steps.
It should be used the specified fuse as follows;

Line Filter Board

Fuse

Fuse Part No.: 423 025 1201
TYPE T8AH 250V FUSE
LITTEL FUSE INC. TYPE 215008
How to replace the fuse
1. Remove the cabinet top following to “Mechanical
Disassemblies”.

2. Remove the fuse from fuse holder.
To install the fuse, take reversed step in the above.

● Thermal switch
There is the thermal switch (SW905) inside of the projector to
prevent the internal temperature from rising abnormally. When the
internal temperature reaches near 90˚C, turn off the AC main
power supply automatically.
The thermal switch is not reset to normal automatically even if the
internal temperature becomes normal. Reset the thermal switch
following procedure.
Check the resistance between terminals of thermal switch by
using the tester. If it has high impedance, thermal switch may be
in operative.

How to reset the thermal switch
1. Loosen 2 screws and open the lamp cover.
2. Press the reset button on the thermal switch with a sharp-

Lamp cover

pointed tool.
CAUTION:
Before press the reset button, disconnect the AC cord from the
projector.

● Interlock switch
The interlock switch (SW902) cuts off the AC mains power supply
when the lamp cover is removed. After opening the lamp cover for
replacing the lamp ass’y, place the lamp cover correctly otherwise
the projector can not turn on.

-6-

Interlock switch
Thermal switch

Circuit Protections

● Warning temperature and power failure protection
The TEMP WARNING indicator flashes red and the projector will automatically turn off when the internal temperature of the projector exceeds the normal temperature or when stopping cooling fans or when the internal power
supply lines are failed.
Check the following possible causes and wait until stopping the TEMP WARNING indicator flashing.

Possible causes
- Air filter is clogged with dust particles. Remove dust from the air filter by following instructions in the “Air filter
care and cleaning” below.
- Ventilation slots of the projector are blocked. In such an event, reposition the projector so that ventilation slots are
not obstructed.
- Check if projector is used at higher temperature place (Normal operating temperature is 5 to 35 ˚C or 41 to 95˚F)
If the TEMP WARNING indicator still continues to flash, there may be defects on cooling fans or power supply circuits. Please check fan operation and power supply lines referring to the “Power Supply Lines Chart”.

Air filter care and cleaning
The removable air filter prevents dust from accumulation on the surface of the projection lens and projection mirror.
Should the air filter become clogged with dust particles, it will reduce the cooling fan’s effectiveness and may result
in internal heat build up and reduce the life of the projector.

To clean up the air filters, follow the cleaning procedure
below:
1. Turn the power off, and disconnect the AC power cord
from the AC outlet.
2. Turn the projector up side down and remove an air filters by pulling the latches of them upward.
3. Clean the air filters with brush or wash out the dust and
particles.
4. Replace each air filter properly. Make sure that the air
filters are fully inserted.

Air filters

CAUTION:
Do not operate the projector with the air filter removed. The
dust is stuck on the LCD panel and the mirror, and it may
spoil the fine picture image.
Do not put the small parts into the air intake vents. It may
result in the malfunction of the projector. The air filter is
small parts. Take care that children don’t eat or swallow it.

RECOMMENDATION
We recommend to avoid dusty, smoky place for operating the projector. Using in dusty place may cause the picture
of poor quality.
When using under the dusty or smoky conditions, dust may accumulate on the LCD panel and lens inside it, and
may resultantly be projected on the screen together with the picture.
When the above symptoms are noticed, please clean up the LCD panel and lens following to the “Cleaning
Method”.

-7-

■ Mechanical Disassemblies
Mechanical disassemble should be made following procedures in numerical order.
Following steps show the basic procedures, therefore unnecessary step may be ignored.
Caution:
The parts and screws should be placed exactly the same position as the original otherwise it may cause loss of
performance and product safety.
A

1 Cabinet Top removal
1 Remove 5 screws A, 2 screws B, and loosen 2 screws
C, and then take the Cabinet Top upward off.
Note: If you want to remove the Cabinet Front-Top only,
you do not need to remove screws A. Remove 2 screws
and Lens Front Cover.

A

B
A
A

A
B

B

2 Cabinet Front removal
1 Turn the Lens Front Cover counter-clockwise and to take
it off by pulling forward as shown in Fig.2-1.

2 Remove the Cabinet Front-Top, Lens Cover Holder and
Lens Cover upward off.

3 Remove 2 screws D to take the Cabinet Front off.
4 Remove the RC Board and speakers on the Cabinet

C

Front.

C

Fig.1

UP
Cabinet Front-Top
Lens Cover Holder
Cabinet Front
Lens
Front
Cover

Lens Cover

Fig.2-1
D

D

Fig.2-2
-8-

Mechanical Disassemblies

3 Main Board removal
1 Remove 7 screws to take the Main Board upward.

Main Board

Fig.3
4 AV, I/F Board & Rear Panel removal
FN905

1 Remove 1 screw A and take the Rear Panel ass’y

B
B

upward off.
2 Remove 4 screws B to take the fan (FN905) off.
3 Remove 5 screws C and 1 screw D to take AV Board
from the Rear Panel ass’y off.
4 Remove 2 screws E and grounding leads and then pull
up the I/F Board and Holder assy from the bottom cabinet.
5 Remove 4 screws F to take the I/F Board.

B
B
C

D

AV Board

Rear Panel Ass’y

F

E

E

F
F
F
I/F Board
A

Fig.4
-9-

Mechanical Disassemblies

5 Lamp Ballast Unit removal
A

Ballast Cover

1 Remove 4 screws A to take the Ballast Cover upward
off.
2 Remove 2 screws B to take the Fan (FN903) off.
3 Remove the Sub Power Board and Drive Board by
pulling them upward.

A

FN903

A
A

B
B
Sub Power
Board

Ballast Board

Drive Board

Fig.5
F

FN908

6 Optical Unit removal

D D

1 Remove 1 screw A and then remove the holder.
2 Remove 2 screws B and 4 screws C(small) and pull the

E

F
FN904

D
C

Optical Unit upward off.

3 Remove 4 screws D to take the Fan (FN908) off.
4 Remove 1 screws E to take the Fan (FN904) off and 2

B

screws F to take the air duct off.
5 Remove 3 screws G to take the Fan (FN907) off.

C
C

C

A

B

Optical Unit

FN907
G

G
G

Fig.6
-10-

Mechanical Disassemblies

7 Prism Base removal
1 Remove 2 screws A to take the Prism Base ass’y
A

upward off.

2 Remove 2 screws B to take the Lens Shift Motor and

A

Sensor SW Holder from the Base.
B
B
Prism Base Ass’y
Motor and
Sensor Holder

Fig.7
8 Power Board removal
A

1 Remove 3 screws A to take the Power Board off.
2 Remove 4 screws B to take Holder off from the cabinet
bottom.

A

Power Board

A
B

B

B
B

Power Board
Holder

Fig.8
-11-

Mechanical Disassemblies

9 Line Filter Board & Interlock SW & Thermal
SW removal
1 Remove 1 screw A to take Interlock Switch(SW905).
2 Remove 2 screws B to take Filter Board Holder and
remove 2 screws C to take Filter Board from the Holder.

3 Remove 1 screw D to take Thermal Switch(SW902).

B

C
B

C

Interlock Switch
(SW905)

A
Filter Board

Thermal Switch
(SW902)

D
Holder

Fig.9

A A A Air-duct-A

10 Fans (FN901, FN902) removal
1 Remove 4 screws A to take Air-duct Top off.
2 Remove 1 screw B (small) and 1 screw C (big) to take

A

C

F

E

B

Duct
Cover
-A

F E

Duct Cover-A.
D

3 Remove 2 screws D to take Fan (FN901) off.
4 Remove 2 screws E (small) and 2 screws F (big) to take

D

Air-duct-A and Fan (FN902) off.

FN901
F

Air-duct
Top

FN902
Duct
Cover-B

Fig.10
-12-

■ Optical Parts Disassemblies
Before taking this procedure, remove Cabinet Top and Main Board following to the “Mechanical Disassemblies”.
Disassembly requires a 2.0mm or 2.5mm hex wrench and a slot screwdriver.

Projection Lens removal
1 Remove Cabinet Front-Top following to the chapter “Mechanical
Disassemblies”.

2 Loosen 2 screws A with 2.5mm hex wrench.
3 Unhook 2 hooks B on the both side of the lens and remove the
Projection Lens ass’y off.

B
A

B
A

Fig.1-2

Fig.1
Polarized Glass-In removal
1 Remove each hex screw and pull the Polarized Glass-In ass’y upward.
2 Remove a stopper and take the glass off upward.

Part No. is printed on
upper side.

polarized glass
Phase Sheet

Stopper

* Glass should be placed as the
printed marker comes to the
upper left corner.

Fig.2-1
-13-

Fig.2-2

Optical Pats Disassemblies

Relay Lens disassembly
1 Remove 2 hex screws A and pull the Relay Lens ass’y upward.
2 Remove 2 screws B to take the Lens off from the holder.
Note:
There is no mounting direction of the lens.
A

A

Holder

B
B
Relay Lens

Fig.3-2

Fig.3-1

Polarized Glass-Out and Wide view Glass removal
1 Remove 4 hex screws A and take the LCD/Prism ass’y off upward.
2 Remove 3 screws B and take the Glass Holder, and then pull the polarized
Glass-Out and the wide view glass upwards off. These glasses are mounted for R, G and B LCD panels respectively.
Note:
To avoid the CG and focus alignments slipping off, please be careful to handle the LCD/Prism ass'y.
A
LCD Panel/Prism Ass’y

A

A

Note:
Do not replace the LCD panel
separately otherwise it can
not obtain proper picture.

B
B

B

Wide view Glass
Phase Sheet
Phase Sheet
Polarized GlassOut

* Glasses should be placed as the
sheet attached side comes to the
LCD panel side.

Fig.4-1
-14-

Fig.4-2

Optical Parts Disassemblies

Optical Unit Top removal
1 Remove 7 screws to take the Optical Unit Top off upward.

Fig.5

Condenser Lens disassembly
1 Remove 2 hex screws A and take the Condenser Lens ass’y.
2 Release 4 hooks B to take the Lens off from the holder.
A

A
* Lens should be placed
as the flat surface side
comes to the holder
side.

B

Holder
Condenser Lens

Fig.6-2

Condenser Lens

Fig.6-1

-15-

Optical Parts Disassemblies

Locations and Directions

Key No. Description

When the optical parts in the optical unit mounting or assembling, the
parts must be mounted in the specified location and direction as
shown in figure below.

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

Condenser lens (R)
Condenser lens
Condenser lens
Mirror (B)
Optical filter (UV cut)
Dichroic mirror (B
Dichroic mirror (G)
Mirror (W)
Condenser lens (IN)
PBS (prism beam splitter)
Integrator lens (OUT)
Integrator lens (IN)
Relay lens (IN)
Mirror (R)

The cutting corner
comes to this side up.

1

14

3
2

4

5
6

14
13

7
The printed marker
comes this side.

The printed marker
comes this side.

8

9

Place the lens as the both
rugged surface sides face
each other.

12

10
11

-16-

Fig.7

■ LCD Panel/Prism Ass’y Replacement
IMPORTANT NOTICE on LCD Panel/Prism Ass'y Replacement
LCD panels used for this model can not be replaced separately. Do not disassemble the LCD Panel/Prism Ass’y.
These LCD panels are installed with precision at the factory. When replacing the LCD panel, should be replaced
whole of the LCD panels and prism ass’y at once.
After replacing LCD Panel/Prism ass’y, please check the following adjustments.
- Check the “Condenser Lens Adjustment” and “Relay Lens Adjustment” following to chapter “Optical
Adjustment”.
- Check the “White Balance Adjustment” and “Common Centre Adjustment” following to chapter
“Electrical Adjustment”.
- Check the white uniformity on the screen.
If you find the color shading, please adjust the white uniformity by using the proper computer and
“Color Shading Correction” software supplied separately. The software can be ordered as follows;
COLOR SHADING CORRECTION SOFTWARE
Service Parts No.
645 051 2308

LCD Panel/Prism Ass’y removal
1 Remove the cabinet top and main board following to
“Mechanical Disassemblies”.

2 Remove 4 screws by using the 2.0 mm hex driver and
take the LCD Panel/Prism ass’y off upward from the
optical unit.

Note:
Do not replace the LCD
panel separately otherwise
it can not obtain proper picture.

LCD Panel/Prism
Ass’y

Note on LCD Panel/Prism Ass’y Mounting

Top View

After replacing or installing the LCD Panel/Prism ass'y,
please make sure to obtain the best focus in both TELE
and WIDE zoom. If the focus adjustment is required,
please adjust the positioning of LCD Panel/Prism Ass’y by
following the below procedure.
Mounting Procedure:
1 Loosen 4 screws A on the LCD Panel/Prism ass'y with
2.0 mm hex driver.
2 Turn the projector on and project the image with WIDE
zoom, and adjust the FOCUS control to obtain the best
focus.
3 Turn the ZOOM control to the TELE position.
4 Move the LCD Panel/Prism Ass’y backward or forward
(about 0mm ~ 0.8mm) to obtain the proper focus.
Confirm the focus at TELE and WIDE zoom.
5 Tighten 4 screws A to fix the LCD Panel/Prism ass'y.
-17-

A

A

A

A
LCD Panel/Prism Ass’y

■ Lamp Replacement
WARNING:

ORDER REPLACEMENT LAMP
Type No.
Service Parts No.
POA-LMP47 610 297 3891

- For continued safety, replace with a lamp assembly of the same type.
- Allow the projector to cool for at least 45 minutes before you open the
lamp cover. The inside of the projector can become very hot.
- Do not drop the lamp module or touch the glass bulb! The glass can
shatter and cause injury.
Procedure
1 Turn off the projector and disconnect the AC cord. Allow the projector to
cool for at least 45 minutes.
2 Loosen 2 screws with a screwdriver and open the lamp cover.
3 Loosen 2 screws and pull out the lamp assembly by grasping the handle.
4 Replace the lamp assembly securely and tighten 2 screws.
5 Close the lamp cover and tighten 2 screws.
6 Connect the AC cord to the projector and turn on.

Lamp cover

Handle

7 Reset the Lamp Replace Counter, see below explanation.

Lamp Assembly

Note:
- Do not reset the Lamp Replace Counter, except after lamp is replaced.
- The projector can not be turned-on with lamp cover removed, because
when the lamp cover is removed, the interlock switch is also released to
switch off the mains power for safety.
Screws

How to reset Lamp Replace Counter
1 Turn the projector on, and press the MENU button

Recommendation

and the on-screen menu will appear. Press the POINT
LEFT/RIGHT buttons to move a red frame pointer to
SETTING menu icon.
2 Press the POINT DOWN button to move a red frame
pointer to “Lamp counter reset” and then press the
SELECT button. The message “Lamp replace counter
reset?” is displayed. Move the pointer to [Yes] and the
press the SELECT button.
3 Another confirmation dialog box appears and select
[Yes] to reset Lamp Replace Counter .

Should the air filter become clogged with dust particles,
it will reduce the cooling fan’s effectiveness and may
result in internal heat build up and short lamp life. We
recommend cleaning the air filter after the projection
lamp is replaced.
Refer to “Air Filter Cleaning”.

Please refer to the owners manual for further information.

How to check Lamp Replace Counter
Normal
Eco
Total

The LAMP REPLACEMENT indicator will illuminate
when the Lamp Replace Counter reaches 1000
hours. This is to indicate that lamp replacement is
required.
You can check the lamp replace counter following to
below procedure.
1 Press and hold the pointer UP on the projector for
more than 20 seconds.
2 The Lamp replace Counter is displayed on top left
corner of the screen briefly.
-18-

123 h
105 h
228 h

Lamp replace counter data

■ Optical Adjustments
Before taking optical adjustments below, remove the Cabinet Top and Main Board following to the “Mechanical
Disassemblies”
Adjustments require a 2.0mm hex wrench and a slot screwdriver.
Note: Do not disconnect connectors K8L, K8X, K8D, K8G and K8E on the main board, because the projector can
not turn on due to operate the power failure protection.

Contrast adjustment
[Before Adjustment]
- Input a 100% of black raster signal.

A

[R/G/B-CONTRAST ADJUSTMENT]
1 Loosen a screw A (Fig.1-1/1-2) on the polarized glass mounting
base which you intend to adjust.

2 Turn the polarized glass mounting base as shown in Fig.1-1 to
obtain the darkest brightness on the screen.

3 Tighten the screw A to fix the polarized glass mounting base.
Polarized glass

Repeat steps 1 to 3 for remaining polarized glasses.

mounting base

Fig.1-1

Main Board
R-Polarized Glass
Mounting Base
A

G-Polarized Glass
Mounting Base
A

B-Polarized Glass
Mounting Base

A

Fig.1-2
-19-

Optical Adjustments

Condenser Lens adjustment
1 Turn the projector on by a state of without FPC cables.
2 Adjust the adjustment base of condenser lens ass’y to make color

3

uniformity in white.
1) If the shading appears on the left or right of the screen as
shown in Fig.2-1, loosen 2 screws A with the 2.0mm hex driver, and adjust the slot B to make color uniformity in green by
using a slot screwdriver.
2) If the shading appears on the top or bottom of the screen as
shown in Fig.2-2, loosen 1 screw C with the 2.0mm hex driver,
and adjust the slot D to make color uniformity in green by using
a slot screwdriver
Tighten screws A and C to fix the Condenser lens unit.

a

White

Slot B

A

Note:
The relay lens adjustment must be carried out after completing this
adjustment.

b

a
A

b

Fig.2-1
Moving of slot B

x
White
y

C

Slot D
x

Fig.2-2
Moving of Slot D

-20-

y

Optical Adjustments

Relay lens-Out adjustment
1 Turn the projector on by a state of without FPC cables.
2 Adjust the adjustment base of relay lens ass’y to make color uniformity in white.
1) If the cyan bar appears on the left or right of the screen as shown
in Fig.4-1, loosen 1 screw A with the 2.0mm hex driver, and
adjust the slot B to make color uniformity in white by using a slot
screwdriver.
2) If the cyan bar appears on the top or bottom of the screen as
shown in Fig.4-2, loosen 2 screws C with the 2.0mm hex driver,
and adjust the screw D to make color uniformity in white by using
a slot screwdriver.
3 Tighten the screws A and C to fix the relay lens unit.

a

White

b

Cyan

A

Slot B

a
b

Fig.4-1
Moving of slot B

x
White

Cyan

y

Screw D
x
C
y
C

Fig.4-2
Moving of slot D

-21-

■ Electrical Adjustments
● Service Adjustment Menu Operation
To enter the service mode
To enter the “Service Mode”, press and hold the MENU and IMAGE button on the projector at the same time for
more than 3 seconds. The service menu appears on the screen as follows.

To adjust service data
Select the adjustment group no. by pressing the MENU button, and select the adjustment item no. by pressing the
pointer UP or DOWN button, and change the data value by pressing the VOLUME – or VOLUME + button. Refer
to the “Service Adjustment Data Table” for further description of adjustment group no., item no. and data value.

To exit the service mode
To exit the service mode, press the POWER ON-OFF button on the projector or remote control unit.

Service Mode
Input
1
Group No.
0
0
Ver. 1.00

Group No.

Data
32
.00

Item No.

Data value

● Memory IC Replacement
IC808 on the main board stores the data for the service adjustments, and should not be replaced except for
the case of defective device.
If replaced, it should be performed the re-adjustments
following to the “Electrical Adjustments”.
The data of lamp replacement monitor timer is stored
in the IC808.
Please note that the lamp replace counter is reset
when the memory IC (IC808) is replaced.
(Lamp replace counter can not be set to the previous
value.)

ments following to the “Electrical Adjustments”.
Please note that the lamp replace counter is reset.
● Caution of Main Board replacement (in the case
IC808 is not defective)
When the main board is replaced, IC808 should be
replaced with the one on previous main board. After
replacement, it should be required to perform the readjustments following to the “Electrical Adjustments”.
In this case, the lamp replace counter can be kept the
value as before.

● Caution to memory IC replacement
When IC808 is replaced with new one, the CPU writes
down the default data of the service adjustments to the
replaced IC, refer to the service adjustment table. As
these data are not the same data as factory shipped
data, it should be required to perform the re-adjust-22-

Electrical Adjustments

● Circuit Adjustments
CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the following adjustments except requiring the readjustments in servicing otherwise it may cause loss of performance and product safety.
[Adjustment Condition]
● Input signal
Video signal .......................... 1.0Vp-p/75Ω terminated, 16 steps gray
scale (Composite video signal)
Computer signal .................... 0.7Vp-p/75Ω terminated, 16 steps gray
scale pattern (XGA)
Component Video signal ...... 0.7Vp-p/75Ω terminated, 16 steps gray
scale (Component video signal with
480p or 1080i format)
● Picture control mode .............. “STANDARD” mode unless otherwise
noted.

16 steps gray scale pattern

White 100%

Black 100%
Note:
* Please refer to “Service Adjustment Menu Operation” for entering to the service mode and adjusting the service
data.

Output Voltage adjustment

Video Center adjustment

After replacing the Power Board readjust the Output
voltage adjustment as follows.

1. Receive the 16-step gray scale computer signal with
Input 1 [COMPUTER] mode.
2. Enter the service mode.
3. Connect a digital voltmeter to test point “TP531” (+)
and chassis ground (-).
4. Select group no. “5”, item no. “1” and change data
value to adjust the voltage to be 7.50 ±0.1Vdc.
5. Connect a digital voltmeter to test point “TP501” (+)
and chassis ground (-).
6. Select item no. “0” and change data value to adjust
the voltage to be 7.50 ±0.1Vdc.
7. Connect a digital voltmeter to test point “TP561” (+)
and chassis ground (-).
8. Select item no. “2” and change data value to adjust
the voltage to be 7.50 ±0.1Vdc.

1. Connect a digital voltmeter to pin 1 (+) of K6A and
chassis ground (-).
2. Adjust the voltage by using VR601 on the power
board as following.

or

AC Input
230V
120V

Reading
370 ±2Vdc
340 ±2Vdc

Caution:
Be sure to connect the lamp when taking this adjustment.

+16V adjustment
1. Receive the 16-step gray scale video signal with
Input 3 [VIDEO] mode.
2. Connect a digital voltmeter to pin 3 (+) of CN6A and
chassis ground (-).
3. Adjust the voltage to be 15.8 ±0.1Vdc by using
VR681 on the power board.

-23-

Electrical Adjustments

NRS adjustment

Black Level adjustment

1. Receive the a6-step gray scale computer signal with
Input 1 [COMPUTER] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP3671” (+)
and chassis ground (-).
4. Select group no. “5”, item no. “6” and change data
value to adjust amplitude “a” to be 2.0 ±0.1V.
5. Select item no. “7” and change data value to adjust
amplitude “b” to be 6.5 ±0.1V.

1. Receive the 16-step gray scale computer signal with
Input 1 [COMPUTER] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP531” (+)
and chassis ground (-).
4. Select group no. “5”, item no. “4” and change data
value to adjust amplitude “a” to be 10.0 ±0.1V.
5. Connect an oscilloscope to test point “TP501” (+)
and chassis ground (-).
6. Select item no. “3” and change data value to adjust
amplitude “a” to be 10.0 ±0.1V.
7. Connect an oscilloscope to test point “TP561” (+)
and chassis ground (-).
8. Select item no. “5” and change data value to adjust
amplitude “a” to be 10.0 ±0.1V.

(b)
(a)
GND

black level

(a)

PC Pedestal adjustment
1. Receive the 16-step gray scale computer signal with
Input 1 [COMPUTER] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP531” (+) and
chassis ground (-).
4. Select group no. “5”, item no. “16” and change data
value to adjust the pedestal level and black level to be
the same level.
5. Connect an oscilloscope to test point “TP501” (+) and
chassis ground (-).
6. Select item no. “15” and change data value to adjust
the pedestal level and black level to be the same
level.
7. Connect an oscilloscope to test point “TP561” (+) and
chassis ground (-).
8. Select item no. “17” and change data value to adjust
the pedestal level and black level to be the same
level.

black level

PC Gain adjustment
1. Receive the 16-step gray scale computer signal with
Input 1 [COMPUTER] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP531” (+)
and chassis ground (-).
4. Select group no. “4”, item no. “4” and set data value
to “600”, and then decrease data to adjust waveform
“a” to be minimum amplitude.
5. Connect an oscilloscope to test point “TP501” (+)
and chassis ground (-).
6. Select item no. “5” and set data value to “600”, and
then decrease data to adjust waveform “a” to be minimum amplitude.
7. Connect an oscilloscope to test point “TP561” (+)
and chassis ground (-).
8. Select item no. “3” and set data value to “580”, and
then decrease data to adjust waveform “a” to be minimum amplitude.

White Level

(a)
Pedestal Lebel = Black Lebel

-24-

Electrical Adjustments
8. Select item no. “13 and change data value to adjust
the pedestal level and black level to be the same
level.

PC Gamma Shift adjustment
1. Receive the 16-step gray scale computer signal with
Input 1 [COMPUTER] mode.
2. Enter the service mode.
3. Select group no. “4”, item no. “6” and change data
value to reproduce the proper gray scale picture on
the screen.

HDTV A/D Input adjustment
[480p-A/D INPUT ADJUSTMENT]
1. Receive the 16-step gray scale component signal
[480p] with Input 3 [COMPONENT] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP21G” (+)
and chassis ground (-).
4. Select group no. “3”, item no. “0” and change data
value to adjust amplitude “a” to be 0.9 ±0.1V.
5. Connect an oscilloscope to test point “TP21B” (+)
and chassis ground (-).
6. Select item no. “4” and change data value to adjust
amplitude “a” to be 0.9 ±0.1V.
7. Connect an oscilloscope to test point “TP21R” (+)
and chassis ground (-).
8. Select item no. “2 and change data value to adjust
amplitude “a” to be 0.9 ±0.1V.

HDTV Pedestal adjustment
[480p-PEDESTAL ADJUSTMENT]
1. Receive the 16-step gray scale component signal
[480p] with Input 3 [COMPONENT] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP21G” (+)
and chassis ground (-).
4. Select group no. “3”, item no. “1” and change data
value to adjust the pedestal level and black level to be
the same level.
5. Connect an oscilloscope to test point “TP21B” (+)
and chassis ground (-).
6. Select group no. “5”, item no. “14” and change data
value to adjust the pedestal level and black level to be
the same level.
7. Connect an oscilloscope to test point “TP21R” (+)
and chassis ground (-).
8. Select item no. “13 and change data value to adjust
the pedestal level and black level to be the same
level.

(a)

[1080i-A/D INPUT ADJUSTMENT]
1. Receive the 16-step gray scale component signal
[1080i] with Input 3 [COMPONENT] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP21G” (+)
and chassis ground (-).
4. Select group no. “3”, item no. “0” and change data
value to adjust amplitude “a” to be 0.9 ±0.1V.
5. Connect an oscilloscope to test point “TP21B” (+)
and chassis ground (-).
6. Select item no. “4” and change data value to adjust
amplitude “a” to be 0.9 ±0.1V.
7. Connect an oscilloscope to test point “TP21R” (+)
and chassis ground (-).
8. Select item no. “2 and change data value to adjust
amplitude “a” to be 0.9 ±0.1V.

Pedestal Lebel = Black Lebel

[1080i-PEDESTAL ADJUSTMENT]
1. Receive the 16-step gray scale component signal
[1080i] with Input 3 [COMPONENT] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP21G” (+)
and chassis ground (-).
4. Select group no. “3”, item no. “1” and change data
value to adjust the pedestal level and black level to be
the same level.
5. Connect an oscilloscope to test point “TP21B” (+)
and chassis ground (-).
6. Select item no. “14” and change data value to adjust
the pedestal level and black level to be the same
level.
7. Connect an oscilloscope to test point “TP21R” (+)
and chassis ground (-).

(a)

Note: This adjustment should be done after HDTV
Pedestal adjustment.
-25-

Electrical Adjustments

HDTV Gain adjustment

VIDEO Pedestal adjustment

1. Receive the 16-step gray scale component signal
[1080i] with Input 3 [COMPONENT] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP531” (+)
and chassis ground (-).
4. Select group no. “4”, item no. “4” and set data value
to “600”, and then decrease data to adjust waveform
“a” to be minimum amplitude.
5. Connect an oscilloscope to test point “TP501” (+)
and chassis ground (-).
6. Select item no. “5” and set data value to “600”, and
then decrease data to adjust waveform “a” to be minimum amplitude.
7. Connect an oscilloscope to test point “TP561” (+)
and chassis ground (-).
8. Select item no. “3” and set data value to “600”, and
then decrease data to adjust waveform “a” to be minimum amplitude.

1. Receive the 16-step gray scale video signal with
Input 3 [VIDEO] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP4151G” (+)
and chassis ground (-).
4. Select group no. “3”, item no. “1” and change data
value to adjust the pedestal level and black level to be
the same level.
5. Connect an oscilloscope to test point “TP4151B” (+)
and chassis ground (-).
6. Select group no. “5”, item no. “14” and change data
value to adjust the pedestal level and black level to be
the same level.
7. Connect an oscilloscope to test point “TP4151R” (+)
and chassis ground (-).
8. Select item no. “13 and change data value to adjust
the pedestal level and black level to be the same
level.

White Level

(a)

Pedestal Lebel = Black Lebel

VIDEO A/D Input adjustment
1. Receive the 16-step gray scale video signal with
Input 3 [VIDEO] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP4151G” (+)
and chassis ground (-).
4. Select group no. “3”, item no. “0” and change data
value to adjust amplitude “a” to be 0.8 ±0.1V.
5. Connect an oscilloscope to test point “TP4151B” (+)
and chassis ground (-).
6. Select item no. “4” and change data value to adjust
amplitude “a” to be 0.8 ±0.1V.
7. Connect an oscilloscope to test point “TP4151R” (+)
and chassis ground (-).
8. Select item no. “2 and change data value to adjust
amplitude “a” to be 0.8 ±0.1V.

(a)

Note: This adjustment should be done after VIDEO
Pedestal adjustment.
-26-

A/D Offset adjustment

Video Gamma Shift adjustment

1. Receive the 16-step gray scale video signal with
Input 3 [VIDEO] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP531” (+) and
chassis ground (-).
4. Select group no. “6”, item no. “11” and change data
value to adjust the pedestal level and black level to be
the same level.
5. Connect an oscilloscope to test point “TP501” (+) and
chassis ground (-).
6. Select item no. “12” and change data value to adjust
the pedestal level and black level to be the same
level.
7. Connect an oscilloscope to test point “TP561” (+) and
chassis ground (-).
8. Select item no. “10 and change data value to adjust
the pedestal level and black level to be the same
level.

1. Receive the 16-step gray scale video signal with
Input 3 [VIDEO] mode.
2. Enter the service mode.
3. Select group no. “4”, item no. “6” and change data
value to reproduce the proper gray scale picture on
the screen.

Common Center adjustment
1. Receive the 16-step gray scale computer signal with
Input 1 [COMPUTER] mode.
2. Enter the service mode.
3. Project only green light component to the screen.
4. Select group no. “5”, item no. “11” and change data
value to obtain the minimum flicker on the screen.
5. Project only blue light component to the screen.
6. Select item no. “12” and change data value to obtain
the minimum flicker on the screen.
7. Project only red light component to the screen.
8. Select item no. “10” and change data value to obtain
the minimum flicker on the screen.

White Balance adjustment
Pedestal Lebel = Black Lebel

Video Gain adjustment
1. Receive the 16-step gray scale video signal with Input
3 [VIDEO] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP531” (+)
and chassis ground (-).
4. Select group no. “4”, item no. “4” and set data value
to “600”, and then decrease data to adjust waveform
“a” to be minimum amplitude.
5. Connect an oscilloscope to test point “TP501” (+)
and chassis ground (-).
6. Select item no. “5” and set data value to “600”, and
then decrease data to adjust waveform “a” to be minimum amplitude.
7. Connect an oscilloscope to test point “TP561” (+)
and chassis ground (-).
8. Select item no. “3” and set data value to “580”, and
then decrease data to adjust waveform “a” to be minimum amplitude.
White Level

(a)

[PC WHITE BALANCE ADJUSTMENT]
1. Receive the 16-step gray scale computer signal with
Input 1 [COMPUTER] mode.
2. Enter the service mode.
3. Select group no. “4”, item no. “7” (Red) or “8” (Blue),
and change data values respectively to make a proper white balance.
[AV WHITE BALANCE ADJUSTMENT]
4. Receive the 16-step gray scale video signal with
Input 3 [VIDEO] mode.
5. Enter the service mode.
6. Select group no. “4”, item no. “7” (Red) or “8” (Blue),
and change data values respectively to make a proper white balance.
Confirm that the same white balance is obtained in
video and computer input.

NOTE ON WHITE UNIFORMITY
ADJUSTMENT
If you find the color shading on the screen, please
adjust the white uniformity by using the proper computer and “Color Shading Correction” software supplied
separately. The software can be ordered as follows;

COLOR SHADING CORRECTION SOFTWARE
645 051 2308
Service Parts No.
-27-

Electrical Adjustments

● Service Adjustment Data Table

No.

Adjustment Item

Group: 0 TC90A26
0
Y-EQ_GAIN
1
Y-EQ_N_C_LIM
2
V-ENH_GAIN
3
V_ENH_CORING
4
NTSC443_SW
Group: 1 uPD64082
0
NRMD
1
HDP
2
CDL
3
DYCOR
4
DYGAIN
5
DCCOR
6
DCGAIN
7
YNRK
8
YNRINV
9
YNRLIM
10
CNRK
11
CNRINV
12
CNRLIM
13
VAPGAIN
14
VAPINV
15
YPFT
16
YPFG
17
V1PSEL
18
VEGSEL
19
CC3N
20
SELD2FH
21
SELDFL
22
YHCOR
23
HPLLFS
24
PLLFG
25
KILR
26
HSSL
27
VSSL
28
BGPS
29
BGPW
Group: 2 TB1274
0
TINT
1
SHP_EQ
2
SHP_FO
3
SHP_GAIN
4
Y_OUT_LEVEL
0.7V
5
C_OUT_LEVEL
0.6V
6
Y_DELAY
7
COL_SYS
8
X’TAL
9
NOISE_DET
10
V_FREQ
11
Vert. Std
12
CID
13
VSIG
14
MVM
15
AFC_GAIN
16
SECAM_GP
Group: 3 CXA2101
0
PICTURE
1
BRIGHT
2
R_DRIVE
3
G_DRIVE

Initial Value

Range

3
3
4
2
1

0~3
0~3
0~7
0~3
0~1

0
4
4
4
15
2
13
0
0
0
0
0
0
2
2
3
9
3
3
0
1
1
1
1
1
3
12
3
7
3

0~3
0~7
0~7
0 ~ 15
0 ~ 15
0 ~ 15
0 ~ 15
0 or 1
0 or 1
0~3
0 or 1
0 or 1
0~3
0 ~ 15
0 ~ 15
0~3
0 ~ 15
0~3
0~3
0 or 1
0 or 1
0 or 1
0~3
0 or 1
0 or 1
0 ~ 15
0 ~ 15
0 ~ 15
0 ~ 15
0 ~ 15

32
2
2
8/8/8/8/8/8/8
31/32/32/32/32
32/32/32/32/32/32
12/12/15/15/22
12/12/15/15/22/18/20
5/5/4/4/4
4/4/3/3/4
0
1
7

0 ~ 63
0~3
0~3
0 ~ 15
0 ~ 63

15/25/25
50/50/50
31/31/31
31

0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63

0 ~ 63
0 ~ 15
0 or 1
0~3
0~7

These initial values are the reference data written from the CPU
ROM to memory IC when replaced new memory IC. The adjustment items indicated with “✻” are required to readjust following
to the “Electrical adjustments”. Other items should be used with
the initial data value.
Input source / Description

Input signal setting 0:NTSC4.43 1:PAL60 (Only effective for NTSC4.43 signal inputs)

VideoNT/ PAL,PALM,PALN/SECAM,BW60,BW50/ NT443/ PAL60/ S-Video/YCbCr
VideoNT/ NT443/ PAL,PALM,PALN/ PAL60/ SECAM,BW
S-VideoNT,BW/ NT443/ PAL,PALM,PALN/ PAL60/ SECAM/ YCbCr
VideoNT/ NT443/ PAL,PALM,PALN/ PAL60/ SECAM,BW
S-VideoNT,BW/ NT443/ PAL,PALM,PALN/ PAL60/ SECAM/480i/575i
Video NT,BW60/ PAL,PALM,PALN,BW50/ SECAM/NT443/PAL60
S-Video NT,BW60/PAL,PALM,PALN,BW50/ SECAM/ NT443/ PAL60

Read Only

NT,PAL,SECAM,NT443,PALM,PALN,480i,575i/ 480p,575p/ 1080i,1035i,720p
NT,PAL,SECAM,NT443,PALM,PALN,480i,575i/ 480p,575p/ 1080i,1035i,720p
NT,NT443,PAL,PALM,PALN,480i,575i/ 480p,575p/ 1080i,1035i,720p

-28-

✻ A/D Input adjustment [G]
✻ Pedestal adjustment [G]
✻ A/D Input adjustment [R]

Electrical Adjustments
No.

Adjustment Item

4
B_DRIVE
5
HSEP_SEL
6
CR_OFFSET1
7
CB_OFFSET1
8
BLK_BOTTOM
9
R-Y/R
10
R-Y/B
11
G-Y/R
12
G-Y/B
13
MAT_OUT
14
SYSTEM
15
V_TC
16
H_WIDTH
17
HD_TC
18
HS_MASK
19
CTI_LEVEL
20
SUB_SHP
21
SHP_FO
22
PRE_OVER
23
LTI_LEVEL
24
D_PIC
25
HUE
26
SUB_COL
27
SUB_HUE
28
CINEMA CTI_LEVEL
29
CINEMA LTI_LEVEL
Group: 4 L3E07050
0
B_SUB_BRT
1
G_SUB_BRT
2
R_SUB_BRT
3
R_SUB_GAIN
4
G_SUB_GAIN
5
B_SUB_GAIN
6
Standard G GAMMA SHIFT
7
Standard R GAMMA SHIFT
8
Standard B GAMMA SHIFT
9
Standard GAMMA 0
10
Standard GAMMA 1
11
Standard GAMMA 2
12
Standard GAMMA 3
13
Standard GAMMA 4
14
Standard GAMMA 5
15
Standard GAMMA 6
16
Standard GAMMA 7
17
Standard GAMMA 8
18
Standard GAMMA 9
19
Standard GAMMA 10
20
Standard GAMMA 11
21
Standard GAMMA 12
22
Standard GAMMA 13
23
Standard GAMMA 14
24
Standard GAMMA 15
25
Real/Cinema G GAMMA SHIFT
26
Real/Cinema R GAMMA SHIFT
27
Real/Cinema B GAMMA SHIFT
28
Real/Cinema GAMMA 0
29
Real/Cinema GAMMA 1
30
Real/Cinema GAMMA 2
31
Real/Cinema GAMMA 3
32
Real/Cinema GAMMA 4
33
Real/Cinema GAMMA 5
34
Real/Cinema GAMMA 6
35
Real/Cinema GAMMA 7
36
Real/Cinema GAMMA 8
37
Real/Cinema GAMMA 9
38
Real/Cinema GAMMA 10
39
Real/Cinema GAMMA 11
40
Real/Cinema GAMMA 12
41
Real/Cinema GAMMA 13

Initial Value

Range

31/31/31
1
7
7
15
12/13/6/6
12/15/5/5
12/12/8/8
5/4/10/10
0/0/0/1
0/1/2/2
2/1/1/0
2/1/1/0
1/1/0/0
0/1/1/1
1/1/1/0/0
2/2/1/1
3/3/3/3
2/3/0/0
1/1/0/0
0/0/1/1
31/31
7/7/7/8/3/3
7/7/8/7/9/6
0
0

0 ~ 63
0~1
0 ~ 15
0 ~ 15
0 ~ 15
0 ~ 15
0 ~ 15
0 ~ 15
0 ~ 15
0~3
0~3
0~3
0~3
0~3
0~1
0~3
0~3
0~3
0~3
0~3
0~3
0 ~ 63
0 ~ 15
0 ~ 15

0/0
0/0
0/0
367/390/300/420
367/390/300/420
367/390/300/420
350/390
350/390
350/390
0/0
160/145
274/263
386/377
477/471
544/537
611/604
659/648
700/684
736/709
770/737
802/766
840/804
874/837
926/902
1023/1023
506/506
512/512
522/527
512/512
522/527
518/521
515/519
514/516
512/512
510/510
508/508
505/505
503/503
501/501
499/499
496/496
492/492

0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639
385 ~ 639

Input source / Description
NT,NT443,PAL,PALM,PALN,480i,575i/ 480p,575p/ 1080i,1035i,720p

✻ A/D Input adjustment [B]

NT,NT443,480i,480p/PAL,PALM,PALN,PAL60,SECAM,575i,575p/1035i/1080i,720p

NT,NT443,PAL,PALM,PALN,SECAM,480i,575i/ 480p,575p/ 1080i60,1035i,720p/1080i50

NT,NT443,PAL,PALM,PALN,SECAM/ 480i,575i/ 480p,575p/ 1080i60,1035i,720p/ 1080i50
NT,NT443,PAL,SECAM,PALM,PALN,480i,575i/ 480p,575p/ 1080i60,1035i,720p/ 1080i50

NT,NT443,PAL,SECAM,PALM,PALN,480i,575i/ 480p,575p / 1080i60,1035i,720p/ 1080i50
NT,NT443,PAL,SECAM,PALM,PALN,480i,575i/ 480p,575p / 1080i60,1035i,720p/ 1080i50”
PAL,PALM,PALN,PAL60,SECAM/ 575i,575p adjutable only those mode.
NT,NT443/PAL,PALM,PALN,PAL60,SECAM/480i,480p/575i,575p/1035i/1080i,720p
NT,NT443/PAL,PALM,PALN,PAL60,SECAM/480i,480p/575i,575p/1035i/1080i,720p

PC/DVI,AV

PC/AV/DVI/HD

✻ Gain adjustment [R]
✻ Gain adjustment [G]

✻ Gain adjustment [B]
PC,DVI std/AV Std Center value 512 * Modify RGB data at the sane time when changing G data. ✻
PC,DVI std/AV Std Center value 512
✻ White balance adj. [R]
Gamma shift adjustment
✻ White balance adj. [B]
PC,DVI std/AV Std Center value 512
PC,DVI Standard / AV Standard
Read only

PC,DVI Real / AV Cinema

-29-

Electrical Adjustments
No.

Adjustment Item

42
Real/Cinema GAMMA 14
43
Real/Cinema GAMMA 15
44
r_mid2_level
45
r_mid1_level
46
r_max_level
47
g_mid2_level
48
g_mid1_level
49
g_max_level
50
b_mid2_level
51
b_mid1_level
52
b_max_level
53
V-line Correction_R2
54
V-line Correction_G2
55
V-line Correction_B2
Group: 5 DAC
0
B_VIDEO_CENTER
1
G_VIDEO_CENTER
2
R_VIDEO_CENTER
3
REF_B
4
REF_G
5
REF_R
6
NRSB
7
NRSA
8
-9
-10
R_V_COM
11
G_V_COM
12
B_V_COM
13
R_BLK_DC
14
B_BLK_DC
15
B_CLMP
16
G_CLMP
17
R_CLMP
Group: 6 AD9883
0
pll_divide
1
vco_range
2
charge_pump_current
3
ad_clk_phase
4
clp_placement
5
clp_width
6
hsync_out_pulse_width
7
r_gain
8
g_gain
9
b_gain
10
r_offset
11
g_offset
12
b_offset
13
sync_reg
14
clp_corst_pow
15
clp_sel
16
read_status
17
ic_ver
Group: 7 LP05
0
LP05_R_GAIN_ud
1
LP05_G_GAIN_ud
2
LP05_B_GAIN_ud
3
LP05_TURBO_GAIN_ud
4
LP05_SHP_EN_SET_ud
5
LP05_SHP_EN_RST_ud
6
LP05_AB_ON_ud
7
LP05_EGE_ud
Group: 10 Option
0
Lamp Time Monitor
1
RS232C Baudrate
2
Shootout Mode
3
Cooling Time
4
Hi-Land SW
5
V-Douki SW

Initial Value

Range

Input source / Description

488/488
512/512
512
608
680
512
608
680
512
608
680
1
1
1

385 ~ 639
385 ~ 639
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 1023
0 ~ 255
0 ~ 255
0 ~ 255

_C9D
_C9E
_C9F
_CA1
_CA2
_CA3
_CA5
_CA6
_CA7
_C48
_C4D
_C52

125
124
125
105
108
107
42
159

0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255

dac1
dac1
dac1
dac1
dac1
dac1
NRS B
NRS A

✻ Video center adjustment [B]
✻ Video center adjustment [G]
✻ Video center adjustment [R]
✻ Black level adjustment [B]
✻ Black level adjustment [G]
✻ Black level adjustment [R]
✻ PSIG adjustment-1
✻ PSIG adjustment-2

69
73
70
115/110/115
115/110/115
30
30
30

0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255

dac2
dac2
dac2
dac3 video/1080i,1035i,720p/480p,525p
dac3 video/1080i,1035i,720p/480p,525p
dac4
dac4
dac4

938/904
0
1/1
8/8
128
50
64
255
255
255
60
60
60
208
154
0
-

0 ~ 4095
0~3
0~7
0 ~ 31
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 128
0 ~ 128
0 ~ 128
0 ~ 255
0 ~ 255
0~7
0 ~ 255
0 ~ 255

adr01,02(7-4) 625line/525line
adr03(7-6)
adr03(5-3)
625line/525line
adr04(7-3)
625line/525line
adr05
adr06
adr07
adr08
adr09
adr0A
adr0B(7-1)
adr0C(7-1)
adr0D(7-1)
adr0E
adr0F
adr10(2-0)
read_only adr14
read_only adr00

128
128
128
18
805
14
0

0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 4095
0 ~ 4095
0~3

0

0~3

0
0
3
0
0

0~1
0~1
0 ~ 15
0 ~ 255
0~1

✻ Common center adjustment [R]
✻ Common center adjustment [G]
✻ Common center adjustment [B]
✻ Pedestal adjustment [R]
✻ Pedestal adjustment [B]
✻ PC pedestal adjustment [B]
✻ PC pedestal adjustment [G]
✻ PC pedestal adjustment [R]

✻ Offset adjustment [R]
✻ Offset adjustment [G]
✻ Offset adjustment [B]

Set appurture compensation effective period.
Set appurture compensation effective period.
Select appurture compensation effective period. 3: 3 point front/back 1: 2 point front/back0: 1 point front/back 2:
Not selection
Select Frequency characteristics data
Read only
0: 19200bps
1: 9600bps
1: Shoot Out Mode Enable 0: Disable
Set cooling period, 1: 30 sec. 3: 90 sec. 15: 450 sec. 0: continus
0: Normal 1: Highland mode (Fan spin speed max.)
0: Syncronized Vertical 1: non-syncronized Vertical

-30-

Electrical Adjustments
No.

Adjustment Item

Initial Value

Range

6
Lamp-use time accumulated
7
Net Board Reset
8
Key Stone Option
Group: 11 Fan Control
0
FAN_TEMP_A_WARNING
1
FAN_TEMP_B_WARNING
2
FAN_TEMP_C_WARNING
3
FAN_CONTROL_SW
4
FAN_A_SPEED
5
FAN_B_SPEED
6
FAN_TEMP_A_MONI
7
FAN_TEMP_B_MONI
8
FAN_TEMP_C_MONI
9
FAN_PRESSURE
Group: 12 PC Real / AV Cinema
0
PC Real Contrast
1
PC Real Brightness
2
PC Real Red
3
PC Real Green
4
PC Real Blue
5
PC Real Gamma
6
AV Cinema Contrast
7
AV Cinema Brightness
8
AV Cinema Color
9
AV Cinema Tint
10
AV Cinema Red
11
AV Cinema Green
12
AV Cinema Blue
13
AV Cinema Sharpness
14
AV Cinema Gamma
15
AV Cinema N.R.
16
AV Cinema PROGRESSIVE
Group: 100 ICS_LP_data
0
LP05_R5_VBLKPOL
1
LP05_R5_VBLKS
2
LP05_R5_VBLKR

1
0

0~1
0~1

46
62
18
0
174/250
184/250
-

30 ~ 100
30 ~ 100
0 ~ 100
0 or 1
0 ~ 255
0 ~ 255
-

-

-

32
32
32
32
32
8
32
32
32
32
32
32
32
15
8
0
1

0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 15
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 31
0 ~ 15
0 or 1
0 or 1
0~1
0 ~ 2047
0 ~ 2047

0~1
0~1
0~1
0~1
0~1
0~1
0~1
0~1
0~3
0~7
0 ~ 8191
0~1
0 ~ 63

9
10
11
12
13
14
15
16
17

LP05_R8_VOFFON
LP05_R8_VOFFS
LP05_R8_VOFFR
LP05_R9_VBLK2POL
LP05_R9_VBLK2POS
LP05_R9_VBLK2WID
LP05_RA_HBLK2POL
LP05_RA_HBLK2POS
LP05_RA_HBLK2WID

18
19
20
21
22
23
24
25
26
27
28

ICS_R0_EnDLS
ICS_R0_EnPLS
ICS_R0_Func_Sel
ICS_R0_Fbk_Sel
ICS_R0_Fbk_Pol
ICS_R0_Ref_Pol
ICS_R0_PD_Pol
ICS_R0_Pden
ICS_R1_PSD
ICS_R1_PFD
ICS_R3_FBD

0
0
9/14/28/
28/23/30/35
0
16
32
0
175/175/75/
75/75/156/162
270/270/160/
155/185/260/290
0/1
0
0/0/20/20/10/7/7
0
16
32
0
0
300/300/127/
120/185/230/265
0
1
0
0
0
1
0
1
2
6
2432

29
30

ICS_R4_Fil_Sel
ICS_R4_DPA_OS

0
0

3
4
5
6
7

LP05_R6_HBLKPOL
LP05_R6_HBLKS
LP05_R6_HBLKR
LP05_R7_CLPPOL
LP05_R7_CLPS

8

LP05_R7_CLPR

0~1
0 ~ 4095
0 ~ 4095
0~1
0 ~ 4095
0 ~ 4095
0~1
0 ~ 2047
0 ~ 2047
0~1
0 ~ 2047
0 ~ 2047
0~1
0 ~ 4095
0 ~ 4095

Input source / Description
Read only
0: Invalid , 1: Valid
0: Fixed, 1: Change with inpt signal
Temerature to judge abnormal A (Not memorized) Inside projector
Temerature to judge abnormal B (Not memorized) Optical
Temerature to judge abnormal A (Not memorized)Detect the filter clogged
0: Auto-FanControl 1: Manual
This is effective when FAN_CONTROL_SW is set to “1”.
Normal/Eco mode
Read only

Read only

R5=ADR133
Change value automatically according to selected signal.
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60
1080i50 / 720P / 480P / 575P
R6=ADR134
Change value automatically according to selected signal.
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60 / 1080i50 / 720P / 480P / 575P
R7=ADR135
Change value automatically according to selected signal.
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60 /
1080i50 / 720P / 480P / 575P
R8=ADR136
Change value automatically according to selected signal.
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60 / 1080i50 / 720P / 480P / 575P
R9=ADR137
Change value automatically according to selected signal.
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60 / 1080i50 / 720P / 480P / 575P
RA=ADR138
Change value automatically according to selected signal.
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60
1080i50 / 720P / 480P / 575P
R0
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60 / 1080i50 / 720P / 480P / 575P

R1
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60 / 1080i50 / 720P / 480P / 575P
R3_R2
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60 / 1080i50 / 720P / 480P / 575P
R4
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60 / 1080i50 / 720P / 480P / 575P

-31-

Electrical Adjustments
No.
31
32
33
34
35
36
37
38
39
40
41
42
43

Adjustment Item

Initial Value

Range

0
0
0
0
1
0
0
1
0
0
0
5
10

0 ~ 63
0~3
0~3
0~1
0~1
0~1
0~1
0~1
0~1
0~1
0 ~ 127
0 ~ 15
0 ~ 15

128
128
128
255
255
255

0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255
0 ~ 255

905
1412
295
41
456
0

0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048

Not used
NT

939
1430
296
52
534
0

0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048

Not used
PAL

1203
1024
145
53
1050
7

0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048

1444
1024
144
53
1052
7

0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048

1203
1024
144
89
1012
7

0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048

1650
1248
318
34
700
8

0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048

1408
1024
296
48
542

0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048

ICS_R5_Mask_Rev
ICS_R5_DPA_Res
ICS_R6_Out_Scl
ICS_R6_Ck2_Inv
ICS_R6_OE_F
ICS_R6_OE_T2
ICS_R6_OE_P2
ICS_R6_OE_Tck
ICS_R6_OE_Pck
ICS_R7_In_Sel
ICS_R7_Osc_Div
ICS_R8_PLL
ICS_R8_DPA

Group: 500 ADC
0
ADC R-OFFSET
1
ADC G-OFFSET
2
ADC B-OFFSET
3
ADC R-GAIN
4
ADC G-GAIN
5
ADC B-GAIN
Group: 510 NTSC Gakaku
0
NTSC TOTAL DOTS
1
NTSC DISP DOTS
2
NTSC H BACK PORCTH
3
NTSC V BACK PORCTH
4
NTSC DISP LINE
5
NTSC CLAMP
Group: 511 PAL Gakaku
0
PAL TOTAL DOTS
1
PAL DISP DOTS
2
PAL H BACK PORCTH
3
PAL V BACK PORCTH
4
PAL DISP LINE
5
PAL CLAMP
Group: 512 HDTV 1080i-60 Gakaku
0
TOTAL DOTS
1
DISP DOTS
2
H BACK PORCTH
3
V BACK PORCTH
4
DISP LINE
5
CLAMP
Group: 513 HDTV 1080i-50 Gakaku
0
TOTAL DOTS
1
DISP DOTS
2
H BACK PORCTH
3
V BACK PORCTH
4
DISP LINE
5
CLAMP
Group: 514 HDTV 1035i Gakaku
0
TOTAL DOTS
1
DISP DOTS
2
H BACK PORCTH
3
V BACK PORCTH
4
DISP LINE
5
CLAMP
Group: 515 HDTV 720p Gakaku
0
TOTAL DOTS
1
DISP DOTS
2
H BACK PORCTH
3
V BACK PORCTH
4
DISP LINE
5
CLAMP
Group: 516 HDTV 575p Gakaku
0
TOTAL DOTS
1
DISP DOTS
2
H BACK PORCTH
3
V BACK PORCTH
4
DISP LINE

Input source / Description
R5
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60 / 1080i50 / 720P / 480P / 575P
R6
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60 / 1080i50 / 720P / 480P / 575P

R7
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60 / 1080i50 / 720P / 480P / 575P
R8
NTSC & 480i / PAL & SECAM & 525i / 1035i & 1080i60 / 1080i50 / 720P / 480P / 575P

1080i60

1080i50

1035i (tempolary)

720p

575p

-32-

Electrical Adjustments
No.

Adjustment Item

Initial Value

Range

5
CLAMP
Group: 517 HDTV 480p Gakaku
0
TOTAL DOTS
1
DISP DOTS
2
H BACK PORCTH
3
V BACK PORCTH
4
DISP LINE
5
CLAMP

8

0 ~ 2048

1285
1024
214
47
460
7

0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048

1308
1024
223
43
462
4

0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048

1338
1024
250
57
546
4

0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048
0 ~ 2048

Group: 518 RGB NTSC Gakaku
0
TOTAL DOTS
1
DISP DOTS
2
H BACK PORCTH
3
V BACK PORCTH
4
DISP LINE
5
CLAMP
Group: 519 RGB PAL Gakaku
0
TOTAL DOTS
1
DISP DOTS
2
H BACK PORCTH
3
V BACK PORCTH
4
DISP LINE
5
CLAMP

Input source / Description

480p (top bottom left right 7)

RGB NTSC

RGB PAL

-33-

Electrical Adjustments

Test Points and Locations
● MAIN BOARD

K8F

TP801

IC801
IC1801

TPDVS

TP561

TP1561

TPDHS

TP3681
IC9401
K25R

TP3671
IC231

TP21B
TP21G
TP21R

K25G
TP531

1

TP814
TP815

TPHS

IC8051

TPVS

TP20R
TP20G
IC1851

K8N

TP20B

TP1531

K8P

K25B
IC6301
TP1501

K8M

IC1101

IC4231

IC4201

TP4101CR
TP4101CB
TP4101Y

TP2301R

TP2301B
TP2301G

TP4151G

TP4151B

TP4151R

TP4111PB

TP4111Y

TP4111PR

-34-

TP501

■ Troubleshooting
No Power
The possible causes of No Power are listed below. Please
check following and refer to power supply and protection circuits diagram in the figure opposite.

2. Abnormality occurs on drive signals for power
or lamp circuit.

1. Stop the operation of power supply circuit due
to detection of abnormality.

- Abnormality on power starter signals (FAN_DRIVE/
FAN_SW).
FAN_SW signal is output from pin 137 of IC801 and
applied to power switching circuit through Q4807. It drives
the power oscillation circuit in Power Board and power
supply for the cooling fans in Sub Power Board.
FAN_DRIVE/FAN_SW.... High in power on
Check FAN_DRIVE and FAN_SW signals, switching circuit Q6623, Q6624, Q6604, IC6604, IC6606, IC6603,
IC6606 and peripheral circuit on Sub Power Board.

- Detected the abnormality on the secondary power supply
lines.
Power failure detection diodes detect an abnormal voltage on the power supply. Check the shortage of secondary circuits, ICs, condensers, etc.
Check power supply lines, 9VA and 15.7V on the Drive
Board, and 3.3V, 5VD, 5VA, S5V, 9V and 15.5V on Main
Board.
Check detection diodes, D1653, D1604 on Drive Board,
and D2304, D2303, D2305, D2306, D3801, D4118,
D1182 and D1161 on Main Board.

- Abnormality on fan drive signal (IC_RESET).
IC_RESET signal is output from pin 2 of IC801 and sent
to Q6616, Q6612 and Q6613 on Sub Power Board. They
switch power supply lines, 9V, 10VA, 15.7V, 15VP, 3.4V.
IC_RESET ................ High in power on
Check IC_RESET signal, IC801 on Main Board, drive
transistors and ICs Q6616, Q6617, Q6612, Q6611,
Q6613, Q6626, Q6602, Q6628, IC6608, IC6618, IC6607,
IC6601, IC6616 and peripheral circuits.

- Detected the operation stop of cooling fans.
Power failure detection diodes detect the fan operation
stop. Check Fans FN901, FN902, FN903, FN904, FN905,
FN907 and FN908.
Check fan's power supply lines and detection diodes and
transistors D6610, D6612, D6613, D6614, D6616,
D6617, D6618 and Q6609 on Power Sub Board and
D7021 and D7022 on I/F Board.

- Abnormality on power drive signal (LAMP_SW).
LAMP_SW signal is output from pin 138 of IC801 and
sent to pin 3 of K8L on Main Board to drive the Lamp
Ballast Unit.
LAMP_SW ................ High in power on
Check LAMP_SW signal, IC801 and peripheral circuits.

- Detected the abnormal temperature rise inside the projector.
Temperature sensor ICs detect abnormal temperature.
Check peripheral circuits and sensor ICs IC1691 on
Sensor1 Board, IC1871 and IC1872 on Main Board.
Thermal switch (SW905) detects abnormal temperature. Check peripheral circuits and SW905.
SW905...................... short in normal
SW905 opens when peripheral temperature is over 90°C.

3. Abnormality occurs on the power circuit.
- Abnormality on power primary circuit
Check Line filters, L601, L602, D604, Q601, DS601,
L611, IC651, D632, etc.

- Detected the abnormality on the lamp ballast unit.
The lamp ballast unit outputs error signal (LAMP_DET) to
pin 123 of IC801.
LAMP_DET .............. High in abnormal

- Abnormality on power secondary circuit
Check D681, D682, D683, IC681, etc.

- Detected the over load/over voltage on power supply circuit.
Feedback circuits detect over load or over voltages.
Check PC602 and peripheral circuits on Power Board.
- Operated the mechanical protect on the Interlock switch
(SW902). Check lamp cover fixed correctly.
- Fuse (F601) open.

-35-

Troubleshooting
Power supply drive and protection diagrams and locations

F601
IC1691
SW902
IC1872
SW905

IC1871

AC IN

SW902
SW905
Interlock sw. Thermal sw.

LAMP Ass'y

LAMP BALLAST UNIT

POWER BOARD

F601
Fuse

1

3

1

3

K7A

K6A

TSW601

IC1691
TEMP. SENS.

1

2

5

3

IC601
P.F.CONTROL

K16I
K7B
1

3
4

16V

6V

9
11

6V

-5V

2

-5V

CN66A

3

SENSOR1
BOARD
Power
Oscillator
Circuit
3

1

3

K8X

CN6A

IC3381
15

16V

12VF1

Q6604

2

IC6603

Q6624

FN903
FN908

5V

2

IC1872
TEMP.SENSOR
SDA
SCL

8
9

1
2

Q6626

12VF2
Q6623

2

52 51

IC6602

LAMP_SW

IC6604

LAMP_ERR

LAMP_DET.

Q4807
6

FAN_DRIVE

FAN_SW

On: High

Failure: High
On: High

138
123
137

Failure: Low
P.FAIL

16V

P.FAIL

5

IC6607

125
On: Low

4

IC_RESET

10

FAN_CS1

110

FAN_CS2

111

2

15V
Q6613/Q6614
IC_RST

11

K66D

SUB POWER BOARD

K8D

K66N

K70E/K70F
1
2

MAIN BOARD

K8Y

1

FN904
FN907

IC1871
TEMP.SENSOR
1

Q3571

FAN_SW

IC6606
K66J
K66K
1

9V

Q6603
On: High

FN901
FN902

K66L,K66M
1

5

K8L

SDA
SCL

16V

1

K70D
1
FAN_DRIVE
2

I/F BOARD

-36-

2

IC801
MAIN CPU

Troubleshooting

No Picture
3. No picture from both of Video and Computer
sources.

The possible causes of No Picture are listed below. Please
check following and refer to video signal processing diagrams in the figure opposite.

Check RGB signals at test points TP20R, TP21R, TP20G,
TP21G, TP20B and TP21B.
Check HSYNC signal at test point TPHS and VSYNC signal at TPVS.
Check clamping signals at IC211 and IC212.

1. No picture from Video source
Composite Video Input
Check composite video signal at pins 3 and 4 of K10R on
AV Board and K8A on Main Board.
Check Y, C signals at pins 15 and 14 of IC1141.
Check Y, C signals at pins 5 and 7 of IC3101.
Check IN2/IN3 signal at pin 22 of IC101.
IN2 : Low, IN3 : High
S-Video Input
Check S-video signals at pins 47-48 (Y), 51-52(C) of
K10R and K8A.
Check Y, C signals at pins 43 and 44 of IC3101.
Component Input
Check component signals at pins 7-8 (Pb), 11-12 (Pr) and
3-4 (Y) of K10R and K8A.
Check component signals (Y, Pr, Pb) at test points
TP4111PB, TP4111PR and TP4111Y.
Check IN2/IN3 signal at pin 22 of IC101.
IN2 : Low, IN3 : High
All of video signals
Check component signals (Y, Cr, Cb) at test points
TP401CR, TP401CB and TP401Y.
Check component signals (Y, Cr, Cb) at pins 67, 68 and
69 of IC4101.
Check component signals (Y, Pr, Pb) at pins 73, 74 and
75 of IC4101.
Check Sync signals (AV_HSYNC, AV_VSYNC) at pins 4
and 9 of IC3101.
Check Sync signals (AV_HSYNC, AV_VSYNC) at pins 65
and 66 of IC4101.
Check RGB signals at pin 35, 37 and 39 of IC4101.
Check RGB signals at pins 15, 14 and 4 of IC4181.
Check RGB signals at pins 8, 10 and 12 of IC201.
Check Sync signals (AV_HSYNC, AV_VSYNC) at pins 1
and 3 of IC3231.
Check CG/HD switching signal at pin 22 of IC201 and
pins 9, 10 of IC3231.
CG : Low, HD : High

4. No picture from DVI source.
Check 5V power supply(5VDVI) at pins 1 and 2 of K10P.
Check Sync signal at pins 47 and 48 of IC8001.
Check ICs IC8001 and peripheral circuits.

5. No picture from all of sources
Check RGB S&H signals at test points TP501, TP1501,
TP531, TP1531, TP561 and TP1561.
Check NRS signal at test point TP2551.
Check power supply circuit 15.5V and 15VP and peripheral circuit.
Check ICs IC501, IC531, IC561, IC1501, IC1531, IC1561,
IC9401, IC401, IC3301 and peripheral circuits.

SIGNAL
CG1/CG2-SW
H-Sync
V-Sync
B
G
R

2. No picture from Computer source
Check RGB signals at pins 19-20, 23-24 and 27-28 of
K10Q on AV Board and K8B on Main Board.
Check Sync signals (CG_HSYNC, CG_VSYNC) at pins
11-12 and 13-14) of K10Q on AV Board and K8B on Main
Board.
Check RGB signals at test points TP20R, TP21R, TP20G,
TP21G, TP20B and TP21B.
Check sync signals at test point TPHS and TPVS.
Check CG1/CG2 switching signal at pin 22 of IC5201 and
pins 16 of IC5204. The CG1/CG2 switching signal is output from pin 50 of IC1801.
CG1 : Low, CG2 : High
Check CG/HD switch signal at pin 22 of IC201 and pins 9,
10 of IC3231. The CG/HD signal is out put from pin 52 of
IC1801.
CG : Low, HD : High

-37-

K10Q/K8B
5-6
11-12
13-14
19-20
23-24
27-28

SIGNAL
AV_Y/Video
AV_PB
AV_PR
S_SW-IN
IN2/IN3-SW
S-Y
S-C

K10R/K8A
3-4
7-8
11-12
15-16
33-34
47-48
51-52

COMPUTER IN

VIDEO IN

-38-

S_SW IN

IC1051

IC1041

IC1021

AV BOARD

C

Y

Cr/Cb

Cb/Pb

VIDEO/Y

V

H

PB/B

CV/Y/G

PR/R

V-SYNC

RGB
H-SYNC

ANALOG

DVI

16

18

20

22

B

6

3

5

16

18

20

22

11

V

S-C

S-Y

K10R

AV_PR

AV_PB

AV_Y

IN2/IN3

16

8

9
1

H

G

R

IC5204
SYNC-SW

IC101
PROG-SW

8
10
12

1
3
5

I2C

19
20

23
24

15
16

51
52

47
48

11
12

7
8

3
4

K8A

2
3

14
I
12

10
5
12

1
8
3

4

11

13

11
12

5
6

13
14

V

H

NT_PAL

CV
PAL

CV
NTSC

33
34

S-C

S-Y

IC223

IC222

IC221

48

B

G

R

83
84

25

5

3

2

1

Y/C

Y/C

V-SYNC

H-SYNC

100

110

CV SECAM

2
12

1
13
14

15

PR

PB

Y

C

IC1141
NTSC/PAL-SW
Y

140

3

I

40

43

44

17

18

19

1,4,8

16

18

22

23

GVS

GHS

13,14

4

9

34 133

TP4111Y

TP4111PB

TP4111PR

V

Y

PB

DVS
DCLK

75

74

73

65

66

69

68

67

55,56

80

79

32

33

37

39

35

IC4101
RGB-MATIX

V_CR0-7
V_CY0-7
V_CB0-7

PR

12

2,4

1,3
13

10

IC4111

Y

CB

CR

11

V

H

TP401Y

TP401CB

H

V

TPDVS

246 224

323

IC341
SRAM
D0-D15

IC301
SCAN
CONVERTER
SYSTEM
CONTROL

A0-A15

IC351
FLASH ROM

TP401CR

H

TPVS

TPHS

GB00-7
GBE0-7
GG00-7
GGE0-7
GR00-7
GRE0-7

IC3101
VIDEO 21
DECODER

7

5

4

2

IC3224
BUFFER

138

IC231
A/D

16

4

119

18

IC3214
2

CG/HD_SW

CV

9,10

14

15

IC3231
H/V SYNC-SW

IC2101 27
PAL-Y/C
17 SEP. 16
15

7

47

IC8001
DVI I/F

CLAMP

IC1101
3DY/C SEP.

88

MAIN BOARD

PR

5

3

CG/HD_SW

K10R K8A

IC7222

IC7221

9,10,11

Y Q1143
PB

CV

IC141

5

3

2

16

TP20B
TP21B

TP20G
TP21G

K10Q K8B

22

18

20

TP20R
TP21R

IC211
CLAMP

IC201
RGB-SW

IC7141
SYNC-DET

B

G

R

IC212
D/A

27
28

K10Q

CG1/CG2

CG1/CG2

K8C

IC5203
RGB-SW

8
10
12

1
3
5

K10P

K8B

DIGITAL

V_OUT

H_OUT

AVV

AVH

G

R

B

DHS

TPDHS

DR0-7
DG0-7
DB0-7

5

TPVRST

TPRST

3

12

13

2

1

6
7
23

4

14

15

IC4181
BLANK-SW

9

BLANK

4

15

18

17

B

R
G

V

H

TP4151G

TP4151R

TP4151B

IC3351
BUFFER

5

2

3

2
7

1
6

3
8

52

CG/HD_SW

4

14

54
30 31

IC4231
CLOCK
DRIVER

CR

TP2301B

Y

TP2301G

CB

48

51

AV/CG

7

34

56 57

IC2301
A/D

50

CG1/CG2

43

18

S_SW IN

TP2301R

9

15

17

54

2

6

IC4232

IC6301
SGRAM

58

IC4201
I/P CONV.

IC3341

IC3331

IC3321

IC1801
I/O EXPANDER
IN2/IN3

23

5

IC3301
TIMING
CONTROLLER

6

7,8,13

IC401
DIGITAL
3D
COLOR
CORRECTION

IC4551
RGB-YUV
CONV.

DBA0-9
DGA0-9
DRA0-9

IC2381
D/A (BLANK)

IC9401
DIGITAL
ENHANER

IC304
CONTROL
MEMORY

R

G

B

IC1851
SUB
CPU

CLK

CENT
REF

2
3

12
I
15

4
1,2

3,5

IC2553

NRS
DRIVER

IC2551

TP2551

K25R

K25G

K25B

IIC SCL/SDA

29, 30

IC801
MAIN CPU

IC2552

TP561

TP1561

TP531
TP1531

IC3501

2
3

7

TP501
TP1501

IC3551

IC1561
S&H_R2

IC561
S&H_R1

IC1531
S&H_G2

IC531
S&H_G1

IC1501
S&H_B2

IC501
S&H_B1

R-LCD
PANEL

G-LCD
PANEL

B-LCD
PANEL

Troubleshooting

Video Signal processing diagrams

Troubleshooting

No Sound
1. No audio signals at AV input circuit.

3. No audio output signal at speakers.

Check audio signals at pins 1, 13 (CG1), 5, 14 (CG2) and
2, 12 (VIDEO) of IC5011 on AV Board. Check IC5011 and
peripheral circuits.

Check audio signals at pins 3, 4 and 1, 2 of K16U on M
Drive Board.
Check MUTE signal at pin 8 of K16R/K8T.
The MUTE signal is output from pin 48 of IC1801.
Mute On : High
Check MUTE signal at pins 3 and 14 of IC1652.
Check sound volume signal at pin 7 of K16R/K8T.
The VOLUME signal is output from pin 15 of IC212 and it
is controlled by IC801 via the IIC bus.
Volume Min.: Low
Check audio signals at IC1651,IC1631, IC1632 and peripheral circuits.

2. Incorrect operation of Input mode switching.
Check AUDIO_SW1/AUDIO_SW2 switching signals at pins
9 and 10 of IC5011. The AUDIO_SW1/AUDIO_SW2 signals are output from pins 4 and 5 of IC1801. See the truth
table below for input mode selection.

Logic Table of IC5011
Pin 10

Pin 9

L
H
L

L
L
H

Mode

4. No power supply at audio circuit.

COMPUTER 1
COMPUTER 2
VIDEO

Check 6V(6V AUDIO) power supply line.

MAIN BOARD

AV BOARD

K10Q K8B

IC1801
I/O
EXPANDER

A_SW2

41
42
39
40

A_SW1

5

IC801
MAIN
CPU

4

A_MUTE

49

IC212
D/A

VOLUME

29, 30

SCL/SDA

2

15

3

IC5001
AUDIO-SW
COMPUTER1
AUDIO IN

PC_L/R

1
13

K8T

9

AU_SW2

10

AU_SW1

7

VIDEO
AUDIO IN

PC_L/R

AV_L/R

5
14

2
12

3

13

Q1681/Q1682
MUTE On: H

K10T K16S
COMPUTER2
AUDIO IN

8

K16R

L

Q5008

R

Q5007

3

1

12

IC1631
L-AMP.

3,14

15

2

7

10

IC1652
AUDIO
CONTROL

-39-

2

6

1

7

IC1651
PRE.AMP

L

7
5

R

7
5

SPEAKERS
K16N

14
17
14
17

IC1632
R-AMP.

DRIVE BOARD

3
4

L

1
2

R

Troubleshooting

Lens Motor Problems
1. No drive signals supplied at motors

Logic Table of IC1611/IC1602/IC1601

Check drive signals at pins 1 and 2 of K16M for focus
motor, pins 3 and 4 of K16M for zoom motor and pins 1
and 2 of K16L for lens shift motor on Power Board.
Check drive signals at pins 2 and 10 of ICs IC1611,
IC1602 and IC1601.
Check ICs IC1611, IC1602 and IC1601 and peripheral circuits. Check motor drive power supply (9VA).

Input

Output

Operation

5

6

10

2

H
L
H
L

L
H
H
L

L
H
L
-

H
L
L
-

Forward drive
Reverse drive
Braking
Stand by

2. No drive signals supplied at motor drive ICs.
Check drive signals at pins 5 and 6 of ICs IC1611, IC1602
and IC1601. They are supplied from pins 4 and 5 for focus
drive, pins 6 and 7 for zoom drive and pins 9 and 10 for
lens shift drive of IC1641 D/A control IC.

3. No drive signals output from CPU.
The motor dive signals are supplied from IC801, main
CPU, via the IIC bus control lines.

4. No key switch signals input to CPU.
Check signals at pins 118 to 120 of IC801 when pressing
the key buttons. Check key buttons.

IC1641
D/A
MOTOR CONTROL

IC1611
FOCUS
MOTOR DRIVE

FOCUS
MOTOR

K16M
10

1

M

2

2

5

6

FOCUS +
FOCUS -

LEVEL +
LEVEL -

CONTROL BOARD

4

M

10

4

2

ZOOM +

5

ZOOM -

6

8

7

9

8

7

K8J

K16R
3

K68A
9

5

IC1602
ZOOM
MOTOR DRIVE

ZOOM
MOTOR

FOCUS
ZOOM

6

2

K8T
5

IC801
MAIN CPU
SCL
SDA

7

3

4

29

118

30

119
120

LENS SHIFT
MOTOR

IC1601
LENS SHIFT
MOTOR DRIVE

CONNECT
BOARD
K16L
K9A K9C

1

10

5

3

2

6

M

LENS +
LENS -

IC1801
I/O
EXPANDER

9

13

10

CENTER_DET.

TOP_DET.
K9B

14

DRIVE BOARD

K8S
1

-40-

3

MAIN BOARD

■ Control Port Functions
● System Control & I/O Port Table (IC801)
Pin No.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71

Name

Function Name

Function

PA23/WRHH
PE14/TIOC4C/DACK0/AH
PA22/WRHL
PA21/CASHH

USB RESET
IC RESET

USB Reset Signal
Power on/off control except FAN and LAMP

RS232C_SW
POWER SW
GND
ADDRESS0
ADDRESS1
ADDRESS2
ADDRESS3
ADDRESS4
5V
ADDRESS5
GND
ADDRESS6
ADDRESS7
ADDRESS8
ADDRESS9
ADDRESS10
ADDRESS11
ADDRESS12
ADDRESS13
ADDRESS14
ADDRESS15
ADDRESS16
5V
ADDRESS17
GND
SCL 1
SDA 1

Not used
Power ON: H, Power OFF: L

O

Address
Address
Address
Address
Address

0
1
2
3
4

O
O
O
O
O

Address Bus 5

O

Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address

6
7
8
9
10
11
12
13
14
15
16

O
O
O
O
O
O
O
O
O
O
O

Address Bus 17

O

IIC Bus 1 Clock
IIC Bus 1 Data

I/O
I/O

SYS SW
AFT-V
GND
DE_DIF
ADDRESS18
ADDRESS19
ADDRESS20
5V
ADDRESS21
GND
READ
SEREKUTO
RTS
CTS

Peripheral IC Power SW (ON=L, OFF=H)
Vertical Sync. Signal for Panel Drive

PE15/TIOC4D/DACK1/IRQOUT

VSS
PC0/A0
PC1/A1
PC2/A2
PC3/A3
PC4/A4
VCC
PC5/A5
VSS
PC6/A6
PC7/A7
PC8/A8
PC9/A9
PC10/A10
PC11/A11
PC12/A12
PC13/A13
PC14/A14
PC15/A15
PB0/A16
VCC
PB1/A17
VSS
PA20/CASHL
PA19/BACK/DRAK1
PB2/IRQ0/POE0/RAS
PB3/IRQ1/POE1/CASL
PA18/BREQ/DRAK0
PB4/IRQ2/POE2/CASH
VSS
PB5/IRQ3/POE3/RDWR
PB6/IRQ4/A18/BACK
PB7/IRQ5/A19/BREQ
PB8/IRQ6/A20/WAIT
VCC
PB9/IRQ7/A21/ADTRG
VSS
PA14/RD
WDTOVF
PD31/D31/ADTRG
PD30/D30/IRQOUT
PA13/WRH
PA12/WRL
PA11/CS1
PA10/CS0
PA9/TCLKD/IRQ3
PA8/TCLKC/IRQ2
PA7/TCLKB/CS3
PA6/TCLKA/CS2
VSS
PD29/D29/CS3
PD28/D28/CS2
PD27/D27/DACK1
PD26/D26/DACK0
PD25/D25/DREQ1
VSS
PD24/D24/DREQ0
VCC
PD23/D23/IRQ7
PD22/D22/IRQ6
PD21/D21/IRQ5
PD20/D20/IRQ4
PD19/D19/IRQ3
PD18/D18/IRQ2
PD17/D17/IRQ1
VSS

Bus
Bus
Bus
Bus
Bus

Bus
Bus
Bus
Bus
Bus
Bus
Bus
Bus
Bus
Bus
Bus

Polarity

I/O

Active L
Active L

O
O

Active L

O
I

Detect DVI Effective
Address Bus 18
Address Bus 19
Address Bus 20

I
O
O
O

Address Bus 21

O

Read signal
Over flow output from Watch dog timer
RS232C RTS (Request To Send)
RS232C CTS (Clear To Send)

Active L

O
O
I
O

WRL
ET7050SELECT
CS0
SCL 2
SDA 2
CS3
CS2
GND

Write signal (Lower 8 bit)
Select SW for Color Correct. ET7050
Flash Memory Chip Select
IIC Bus 2 Clock
IIC Bus 2 Data
USB/IO EXP Chip Select
SRAM/CXD3511Q Chip Select

Active L

O
O
O
I/O
I/O
O
O

PW_SEL
PW_INTR
PW_OUT1
PW_OUT0
GND
DAC_CS
5V
DVI_PC
DVI_OUT
CG_HD

PW365 RS232C Select
PW_365 Dividing signal
PW_365 Data output
PW_365 Data output

PW_IN1
PW_IN0
GND

PW365 Data input (reserve)
PW365 Data input (reserve)

Active L

Active L
Active L

(reserve)
(reserve)

Select signal for DAC M62358

O
DVI = L
DVI = L
CG = L

-41-

O
O
O
O

O
O
O

I
I

Control Port Functions
Pin No.

72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
18
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144

Name

Function Name

PD16/D16/IRQ0
PD15/D15
PD14/D14
PD13/D13
PD12/D12
VCC
PD11/D11
VSS
PD10/D10
PD9/D9
PD8/D8
PD7/D7
PD6/D6
VCC
PD5/D5
VSS
PD4/D4
PD3/D3
PD2/D2
PD1/D1
PD0/D0
VSS
XTAL
MD3
EXTAL
MD2
NMI
VCC (FWP)
PA16/AH
PA17/WAIT
MD1
MD0
PLLVCC
PLLCAP
PLLVSS
PA15/CK
RES
PE0/TIOC0A/DREQ0
PE1/TIOC0B/DRAK0
PE2/TIOC0C/DREQ1
VCC
PE3/TIOC0D/DRAK1
PE4/TIOC1A
PE5/TIOC1B
PE6/TIOC2A
VSS
PF0/AN0
PF1/AN1
PF2/AN2
PF3/AN3
PF4/AN4
PF5/AN5
AVSS
PF6/AN6
PF7/AN7
AVREF
AVCC
VSS
PA0/RXD0
PA1/TXD0
PA2/SCK0/DREQ0/IRQ0
PA3/RXD1
PA4/TXD1
VCC
PA5/SCK1/DREQ1/IRQ1
PE7/TIOC2B
PE8/TIOC3A
PE9/TIOC3B
PE10/TIOC3C
VSS
PE11/TIOC3D
PE12/TIOC4A
PE13/TIOC4B/MRES

reserve
DATA15
DATA14
DATA13
DATA12
5V
DATA11
GND
DATA10
DATA9
DATA8
DATA7
DATA6
5V
DATA5
GND
DATA4
DATA3
DATA2
DATA1
DATA0
GND
XTAL
Mode 3
EXTAL
Mode 2
NONMASK
FWP
FLASH MODE
FAN ON/OFF
Mode 1
Mode 0
PLLVCC
PLLCAP
PLLGND
M-CLK
RESET
ET7050SCS
FAN_CS1
FAN_CS2
5V
SDA3
SCL3
USB_BRST
SH_SEL
GND
KEY1
KEY2
KEY3
OPT1
OPT2
LAMP DET
GND
POWER FAIL
SDATA IN
5V
5V
GND
PW_RX
PW_TX
Rx
Tx
5V
USB INTR
FAN SW
LAMP SW
SDATA OUT
SCLK
GND
EXP RESET
R/C
PW RESET

Function

Data
Data
Data
Data

Bus
Bus
Bus
Bus

Polarity

I/O

15
14
13
12

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

Data Bus 11

I/O

Data
Data
Data
Data
Data

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

Bus
Bus
Bus
Bus
Bus

10
9
8
7
6

Data Bus 5

I/O

Data
Data
Data
Data
Data

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

Bus
Bus
Bus
Bus
Bus

4
3
2
1
0

Oscillator Input
Multiplex setting with Mode 2 (set H)
Oscillator output
Multiplex setting with Mode 3 (set L)
Non-maskarable Input
Write Mode for Flash memory
FWP Control
Not used
MCU Mode setting with Mode 0 (set H)
MCU Mode setting with Mode 1 (set L)
Power for PLL
PLL Filter
GND for PLL
CPU Clock output
RESET Input
Serial Chip select for Color Correction ET5070
Chip select for FAN 1
Chip select for FAN 2

I
I
O
I
I
I
O
O
I
I

Active L
Active L

O
I
O
O
O

IIC Bus 3 Data
IIC Bus 3 Clock
Pull-up resistor on/off for USB
S&H Select
Key iput 1 (A/D input)
Key iput 2 (A/D input)
Key iput 3 (A/D input)
Option Destination
(A/D input)
Option Air pressure sensor
EPSN:H
Detection Lamp Error
GND for A/D
Power Fail (A/D input: Abnormal when 2V or less input)
Serial Data input
Reference Voltage for A/D
Power for A/D

I
I
I
I
I
I
I
I

PW365 Rx
PW365 Tx

I
O

RS232C Rx
RS232C Tx

I
O

USB Dividing signal input
FAN ON/OFF output
LAMP ON/OFF output
Serial Data output
Serial Clock output

Active L
Active H

I
O
O
O
O

I/O Expander
Remote Control signal input
PW365 Reset signal output

Active H
Active L
Active L

O
I
O

-42-

Control Port Functions

● Parallel I/O Expander (IC1801, M66500FP)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64

Name

Function Name

PF6
PF7
Vcc
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
GND3
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Vcc
RD
WR
CS
RESET
GND1
A2
A1
A0
D0
D1
D2
D3
D4
D5
D6
D7
PC7
PC6
PC5
PC4
PC0
PC1
PC2
PC3
PG0
PG1
PG2
PG3
GND2
PF0
PF1
PF2
PF3
PF4
PF5

CG_FILTER
D_TURBO_SEL
5 V ±10 %
A SW1
A SW2
SEL_BAISOKU
IP_CSA
IP+RESETSW
IN2/IN3_SW
PC_SWINV
S_SW
GND
LENS_TOP
LENS_CENTER
LENS_BOTTOM
HD-DET
COMP-DET
S-DET
V-DET
PC_DET

DAC_SW
TURBO_LED
5V ±10 %

Function

Audio SW 1
Audio SW 2
Double Scan Selection
CPU Strobe signal for IP Conversion
CPU reset signal for IP Conversion
Input2/3 switch
Auto Image
S-Input
Lens Position Detection [Top]
Lens Position Detection [Center]
Lens Position Detection [Bottom]
HD Signal Detection , exist at CXA2101
Component input Detection Yes/No
S-Input Detection Yes/No
V-Sync Detection at C-Sync
Network Board Detection Yes/No

MOUSE2
NET_SW
WATT_SW
A_MUTE
CG1/CG2
AV/CG
DDC_CONT

DDC PC/CPU SW

SCDT_DIF2
SCDT_DIF
GND

DVI Output SW
DVI Output SW
Temp Warning LED Drive output
Lamp Replace LED Drive output
Ready LED Drive output
DVI Signal SW_8001
DVI Signal SW_8051
SGRAM Bus Reset

PD_DIF
PD_DIF2
DDC_CONT_DVI

-43-

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

DIGITAL TURBO Selection

For Service Mode Groupe 6-10,11,12
Bright LED Drive
Read Select
Write Select
Chip Select
Reset
Port Select 2
Port Select 1
Port Select 0
Data Bus 0
Data Bus 1
Data Bus 2
Data Bus 3
Data Bus 4
Data Bus 5
Data Bus 6
Data Bus 7
Mouse Select 2
Network Board On/Off SW
Lamp Mode Switch
Mute output
Computer 1/Computer 2 SW
Computer/Video SW

GND

Polarity

Top=L
Not used
Bottom=L
On=H
Not used
Not used
Attached: L

Active
Active
Active
Active

L
L
L
H

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

DVI=H
DVI=H

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

LED On=L
LED On=L
LED On=L
DVI=H
DVI=H
Active L

O
O
O
O
O
O

On: L
Eco: L

CG=L
CPU: H

Control Port Functions

● IIC Bus I/O Expander (IC1641, M62320FP) Port Functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

Name
SO
SCL
SDA
D0
D1
D2
D3
Vss
D4
D5
D6
D7
Vdd
CS2
CS1
CS0

Function

Action

Serial Data output port (Not connected)
IIC BUS SCL
IIC BUS SDA
FOCUS+
FOCUSZOOM+
ZOOMGND
LENS UP
LENS DOWN
BRIGHT ON
BRIGHT OFF
Power supply +5V ±10 %
Slave address setting port 2 (GND)
Slave address setting port 1 (GND)
Slave address setting port 0 (GND)

I/O

FOCUS +
FOCUS ZOOM +
ZOOM -

Active
Active
Active
Active

H
H
H
H

LENS UP
LENS DOWN
BRIGHT ON
BRIGHT OFF

Active
Active
Active
Active

H
H
H
H

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

● IIC Bus DA Converter (IC212, M62393FP) Port Functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

Name
R
SCL
SDA
A05
A06
A07
A08
VrefL
VrefU 1
Vss
VrefU2
A01
A02
A03
A04
Vcc
Vdd
CS2
CS1
CS0

Function

I/O

Serial Data output port (Not connected)
IIC BUS SCL
IIC BUS SDA
Not used
Not used
Not used
Not used
DAC Lower Reference Voltage input
DAC Upper Reference Voltage input (CH5~CH8)
GND
DAC Upper Reference Voltage input (CH1~CH 4)
AV_RCLP
AV_GCLP
AV_BCLP
VOLUME
Power Supply for Output Buffer (4.5V ~ 5.5V)
Power Supply +5V±10 %
Slave address setting port 2 (GND)
Slave address setting port 1 (Vdd)
Slave address setting port 0 (GND)

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

● IIC Bus DA Converter (IC2381, M62393FP) Port Functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

Name
R
SCL
SDA
A05
A06
A07
A08
VrefL
VrefU 1
Vss
VrefU2
A01
A02
A03
A04
Vcc
Vdd
CS2
CS1
CS0

Function

I/O

Serial Data output port (Not connected)
IIC BUS SCL
IIC BUS SDA
Not used
Not used
R_BLK_DC
B_BLK_DC
DAC Lower Reference Voltage input
DAC Upper Reference Voltage input (CH5~CH8)
GND
DAC Upper Reference Voltage input (CH1~CH 4)
Not used
Not used
Not used
Not used
Power Supply for Output Buffer (4.5V ~ 5.5V)
Power Supply +5V±10 %
Slave address setting port 2 (GND)
Slave address setting port 1 (GND)
Slave address setting port 0 (GND)

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

-44-

Control Port Functions

● IIC Bus DA Converter (IC3551, M62399FP) Port Functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

Name
R
SCL
SDA
A05
A06
A07
A08
VrefL
VrefU 1
Vss
VrefU2
A01
A02
A03
A04
Vcc
Vdd
CS2
CS1
CS0

Function

I/O

Serial Data output port (Not connected)
IIC BUS SCL
IIC BUS SDA
DWN
V_COMR
V_COMG
V_COMB
DAC Lower Reference Voltage input
DAC Upper Reference Voltage input (CH5~CH8)
GND
DAC Upper Reference Voltage input (CH1~CH 4)
NRSB
NRSA
XRGT3
RGT3
Power Supply for Output Buffer (2.4*VrefU ~ 12V)
Power Supply +5V±10 %
Slave address setting port 2 (GND)
Slave address setting port 1 (GND)
Slave address setting port 0 (GND)

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

● IIC Bus DA Converter (IC3501, M62399FP) Port Functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

Name
R
SCL
SDA
A05
A06
A07
A08
VrefL
VrefU 1
Vss
VrefU2
A01
A02
A03
A04
Vcc
Vdd
CS2
CS1
CS0

Function

I/O

Serial Data output port (Not connected)
IIC BUS SCL
IIC BUS SDA
Not used
REF_B
REF_G
REF_R
DAC Lower Reference Voltage input
DAC Upper Reference Voltage input (CH5~CH8)
GND
DAC Upper Reference Voltage input (CH1~CH 4)
B_CENT
G_CENT
R_CENT
Not used
Power Supply for Output Buffer (2.4*VrefU ~ 12V)
Power Supply +5V±10 %
Slave address setting port 2 (GND)
Slave address setting port 1 (GND)
Slave address setting port 0 (GND)

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

-45-

■ Waveforms
VIDEO-IN 

Y-IN 

C-IN 

H-SYNC-OUT 

V-SYNC-OUT 

Sandcastle-OUT 

Y-IN 

CB-IN 

CR-IN 

R 

G 

B 

CB-IN 

Y-IN 

CR-IN 

-46-

Waveforms
R 

G 

B 

R-S&H OUT 

G-S&H OUT 

B-S&H OUT 

-47-

■ Cleaning
After long periods of use, dust and other particles will accumulate on the LCD panel, prism, mirror, polarized glass,
lens, etc., causing the picture to darken or color to blur. If this occurs, clean the inside of optical unit.
Remove dust and other particles using air spray. If dirt cannot be removed by air spray, disassemble and clean
the optical unit.

Cleaning with air spray

Disassembly Cleaning

1. Remove the cabinet top following to “Mechanical
Disassemblies”.
2. Clean up the LCD panel and polarizing plate by using
the air spray from the cabinet top opening.

Disassembly cleaning method should only be performed when the unit is considerable dirty and cannot
be sufficiently cleaned by air spraying alone.
Be sure to readjust the optical system after performing disassembly cleaning.

Caution:
Use a commercial (inert gas) air spray designed for
cleaning camera and computer equipment. Use a resinbased nozzle only. Be vary careful not to damage optical parts with the nozzle tip. Never use any kind of
cleanser on the unit. Also, never use abrasive materials
on the unit as this may cause irreparable damage.

1. Remove the cabinet top and main units following to
“Mechanical Disassemblies”.
2. Remove the optical base top following to “Optical Unit
Disassemblies”. If the LCD panel needs cleaning,
remove the LCD panel unit following to “LCD panel
replacement”.
3. Clean the optical parts with a soft cloth. Clean
extremely dirty areas using a cloth moistened with
alcohol.
Caution:
The surface of the optical components consists of multiple dielectric layers with varying degrees of refraction.
Never use organic solvents (thinner, etc.) or any kind of
cleanser on these components.
Since the LCD panel is equipped with an electronic circuit, never use any liquids (water, etc.) to clean the unit.
Use of liquid may cause the unit to malfunction.

-48-

■ IC Block Diagrams
● AD8183ARU/AD8185ARU 

● BA7078AF 

-49-

IC Block Diagrams

● BH3540 

● CXA2101AQ 

-50-

IC Block Diagrams

● FA5332M 

● FA7612CA 

-51-

IC Block Diagrams

● ICS1523M 

● L3E06070 

-52-

IC Block Diagrams

● L3E07050 

● LB1641 

-53-

IC Block Diagrams

● LB1645 

● LC863316 

-54-

IC Block Diagrams

● ML60851 

● M62393 

-55-

IC Block Diagrams

● M62399 

● PW365 

-56-

IC Block Diagrams

● SII161ACT 

● STR-Z2156 

-57-

IC Block Diagrams

● TA1287 

● TB1274AF 

---

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