Panasonic_JD_700_800_Series_Service_Manual Panasonic JD 700 800 Series Service Manual

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Panasonic·
__

If

SERVICE MANUAL
JD-700M/JD-800M Series
NO.1

I 2120497-01971 I

TABLE OF CONTENTS
1.

INTRODUCTION ..............................................................................................................

1. 1

2.

OUTLINE .........................................................................................................................
2.1 APPEARANCE .......................................................................................................
2.2 SYSTEM CONFIGURATION ..................................................................................
2.3 SPECI FICATIONS ..................................................................................................

2· 1
2. 1
2·7
2 . 12

3.

POWER SUPPLY
...........................................................................................................
3.1 JD-700M/740M POWER SUPPLy...........................................................................
3.2 JD-800M/840M/850M POWER SUPPLy...............................................................

3. 1
3· 1
3.9

4.

KEYBOARD
4.1 OUTLINE
4.2 KEYBOARD LAYOUT
4.3 KEYBOARD CODE TABLE
..................................................................................
4.4 DESCRIPTION OF OPERATION
.........................................................................
4.5 KEYBOARD (SBCKB ASC)
...................................................................................

4· 1
4· 1
4· 1
4·2
4·6
4·7

5.

MONITOR TV .................................................................................................................
5.1 OUTLINE
.............................................................................................................
5.2 MONITOR TV LAYOUT .........................................................................................
5.3 POINTS AND METHOD OF CONTROL WITH VARIABLE RESISTORS ............ ..
5.4 SCHEMATIC CONFIGURATION ............................................................................
5.5 DESCR IPTION OF MON ITOR TV .........................................................................
5.6 SCHEMATICS (MONITOR) ..................................................................................... ..
5.7 LAYOUT DRAWING (MONITOR TV CIRCUIT BOARD) ........................................ .
5.8 PARTS LIST ...........................................................................................................

5. 1
5· 1

FLOPPY DISK DRIVE ....................................................................................................
6.1 MINI FLOPPYDISKDRIVE ................................................................................. .
6.2 STANDARD FLOPPY DISK DRIVE .................................................................... ..

6.1

CONTROL PCB
.............................................................................................................
7.1 OUTLINE
...........................................................................................................
.............................................................................................
7.2 CIRCUIT DIAGRAM
7.3 MEMORY MAP
7.4 DESCRIPTION OF LSI OPERATION
................................................................. ..
7.5 DESCRIPTION OF CIRCUIT OPERATION
..........................................................
7.6 CONTROL PCB ......................................................................................................
SBCV3 SCHEMATICS (for ~~-?29M, 740M, 800M, 840M) ..................................... ..
SBCV4 SCHEMATICS (for 850M) .............................................................................
7.7 JD·740M, JD·840M/850M DDPLL PCB ................. :................................................ .

7. 1

ASSEMBLY
8.1 JD-700M/740M ASSEMBL T DRAWING .................................................................
8.2 JD-700M/740 MAIN PARTS LIST ....................................................................... ..
8.3 JD-800M/840M ASSEMBLY DRAWING
..............................................................
8.4 JD-800M/840M MAIN PARTS LIST
.....................................................................
.......................................................................
8.5 JD-850M ASSEMBLY DRAWING
8.6 JD-850M MAIN PARTS LIST

8. 1

8·2
8·3
8-5
8·7
8·10
8· 12

TROUBLE-SHOOTING
..................................................................................................
9.1 PROCEDURES OF TROUBLE·SHOOTING
........................................................
9.2 TROUBLE·SHOOTING GUIDE
............................................................................
9.3 SERVICE TOOLS

9· 1
9 ·1
9.1
9·23

6.

7.

8.

9.

10.

IC LST CATALOG

1"

PRECAUTIONS ON HANDLING MOS IC

12.
13.

5·· 1
5·2
5·3
5·5
5·9
5·10
5 . 11

6.1
6. 1
7. 1
7. 1

7. 1
7·2
7·3
7· 13
7· 13
7 ·31
7·50

10· 1
.......................................................................

11· 1

MOSICLIST

...................................................................................................................

12·1

REFERENCE

...................................................................................................................

12·1

1. INTRODUCTION
This manual describes necessary'means and method for trouble-shooting of JD-700M/800M series.

1-1

2. OUTLINE
2. 1 APPEARANCE

JD-700M/800M series 'consists, as shown in Fig. 2 - 1 DC power supply, keyboard, Monitor TV, floppy disk drive
and control PCB which contains 8085A-2 microprocessor to control them.

~:
.. :

" .••...., . . . .. . . . . :.....

" ....•... ~;:;.:" :;:.•.: -:•..;;....:.~.-::~:.:::::-.;::;:::~:~:;.~;.;•..:.:.::....:.-:;y.::::..:...:.

~~.-'

.....

--------~~--------~
Fig. 2 - 1

JD-700M/800M SERIES EXTERNAL VIEW

2-1

1

1
1
1
1
1
1
1

1

FLOPPY DlSK

1
1
1
1
1

CQNTRAS1' VR

1

1
1

MAlN POWER SWlTCH

NONGLARE
MONlTORTV

1
1
1
1
1

1
1
1
1
1
1
1

1

Fig. 2.2

1

JO.70OM SERIES EXTERNAL LAYOUT

1
1
1
1

MONlTORTV

1

1
1
1

DC POWER SUPPL'(

1
1
1

FLOPPY D'SK

1

1
1
1
1
1
1
1

1
1
1
1

"TRANSFORMER

1
1

ACCORD

1

1

Fig. 2.3

JO.700M SERIES INTERNAL LAYOUT

1
1
1
1
1

1

2-2

FLOPPY DISK

NONGLARE
MONITOR TV
CONTRASTVR

MAIN POWER SWITCH

KEYBOARD

Fig. 2·4

JD·800M SERIES EXTERNAL LAYOUT

FLOPPY DISK

FAN

TRANSFORMER

DC POWER SUPPLY

DDPLLPCB
(ONLY FOR JD·840M)

AC CORD

FLOPPY IIF CAB LE

Fig. 2·5

JD·800M SERIES INTERNAL LAYOUT

2·3

FUSE
KEYBOARD PCB

ACCOR~
~" ".,.;.,.""~
.•.

AC LINE FILTER

Fig. 2·6

CONTROL PCB

JD·700M/740M/800M/840M
INTERNAL LAYOUT (FROM BOTTOM)

2·4

NONGLARE
MONITOR TV

FLOPPY DISK

FAN

TRANSFORMER

DC POWER SUPPLY

COMMUNICATION PORT
FUSE
KEYBOARD
CONNECTOR

Fig. 2 - 7

1/0 EXTEND
(TO JM-S70 or JK-7600)

JO-850M INTERNAL LAYOUT

2-5

I

I

• co......

.1

AC LINE FI L TER

rl.----- AC CORD

\\:

I/O EXTEND
CONNECTOR

CONTROL

KEYBOARD
I NTER FACE CAB LE

Fig. 2 - 8

JO-850M INTERNAL LAYOUT
(F ROM BOTTOM)

2-6

KEYBOARD FUSE
CONNECTOR
PCB·

2.2 SYSTEM CONFIGURATION
2.2.1 JO-700M SYSTEM CONFIGURATION
MONITOR TV
TR12DG9F
Refer to page 5-1 .

+12V:-:-: 1.1A TYP.

~

+5V:-:-:

KEY BOARD
SBCKBASC

r-----~~===-1~2V=--=-==~==~~~

Refer to page 4-1 .

CONTROL
PCB
SBCV3
(SBCV2)
Refer to page 7-1.

CHARACTER
GENERATOR
*1

EPROM
M5L2716K2

9I

/'~

FLOPPY DISK
JK874 (SA400)

t--

Refer to JK874 (SA400)
Service manual
21204970110*

r

+12V :-:-: 0.9A TYP.
+5V :-:-: O.5A TYP.

± 12V :-:-:
+5V:-:-:

DC POWER SUPPLY
AND
TRANS FORMER
FAN

K...

DC POWER SUPPLY
ECH33B01TB
TRANSFORMER
SBCT11
SBCT21
Refer to page 3-1.

SOV tV

~
-<;::=------

AC/DC POWER

---------

SIGNAL

*1

ACINPUT

120V tV
220/240VtV

KEY BOARD

KEY TOP

ASCII

SBCKBASC

-

British

SBCKBASC

SBCKTPBRI

French

SBCKBASC

SBCKTPFRE

ASCII

MCM66740

British

MCM66760

French

MCM66780

German

SBCKBGER

-

German

MCM66770

Swedesh

SBCKBSWE

-

Fig. 2 - 9

BLOCK DIAGRAM JD-700M
2-7

2.2.2 JD·740M SYSTEM CONFIGURATION

MONITOR TV
TR12DG9F
Refer to page 5-1.

+12V :-:-: 1.1 V TYP.

+5V :-:-:

KEY BOARD
SBCKBASC

---------

r-------~=====-1~2V=.=.. ==~==~~~

Refer to page 4-1 .

CONTROL
PCB
SBCV3
Refer to page 7·1.
+5VDC
CHARACTER
GENERATOR
*1

j

L

DDPLL
Refer to page 7-50.

FLOPPY DISK
JK875

EPROM
M5L2716K102

Refer to JK875
Service manual.
(262D497-0157*)
±12V:-:-:
+5V:-:-:

+12V :-:-: O.9A TYP.
+5V :-:: 1.0A TYP.

DC POWER SUPPLY
AND
TRANS FORMER
FAN

80VtV

DC POWER SUPPLY
ECH33B01TB
TRANSFORMER
SBCT11
SBCT21
Refer to page 3-1.

ACINPUT

.

~ ~:q ~

"" ""

~~

-

t; t;

f

r--

6

'5""
--;,-

TO CONTROL PC81XP.s

OOj CONNECTOR 12
-?" (/-480270-0)
-. ;-

'--:-

f 'N (170/21-11

~ ~lgl~ ~ co ~ ~ ~
'"'t '"'t

.

.
•

-=- CHASSIS

AC
27V

DC
AC DC+5V DC +5V DC --I2V DC +12V DC+12V SG
IBV
.
SG
-12V SG

DC POWFR SUPPLY
(fHB SC33801

r)

MODEL

CONNECT/ON

JD-700M

JAPAN

A C Sill TCH OUT-PIN2-CONNECTOR3-PIN2

USA

AC SWITCH OUT-PIN2-CONNECTOR3:'PIN3

JD-700M

AC CORD
( VM 0033)

28

»<

.

PIN 160620-/1

NAltY

CDc»
-tn
0-

CONNEC TOR 10
( 170Q23-1)

RED
BLACK
BLACK
BLACK
BLUE
ORANGE

~~

AC LIN
(ME-20

-to
~3:

~

~ ~I~ :3 ~ ~ ~ ~1Ci: iil

00

<:('"'t
-.J-.J

-:::r
(I)~

CONNECTOR II
070Q24-f)

0

~ lu

~ ~ ~ Lu

nO
co:..
n8

03:

~

ECTOR 4
10426-0) I 1:2:3 '4JPIN(()0620-1)
'ECTOR 3 I I: 2:3 :.1J PIN (11OI21-/)
0424-0) ~ ~ I
ULlOl5
PIN(/70/21-J)
~ ~
AWG#lB
CONNECTOR 6
"
Qj)r:r~,JOUT
~/-480424-0) I 2 3 4 J
R SWITCH
"2
. CONNECTOR 7 I 2 3 4 J
,
II ")2
(/-480426-0)
1N
~~
PIN' dO()20-/)
YNECTOR ti.~

.(

TV

~
I~
~ .Ci:

l

MA IN PO
(SDE358

....

TO -NONITOR

3.1.4 JD·700Mn40M 100V/120V.
AC/DC DISTRIBUTION PARTS LIST

L OC.

PART

NO.

PART NAME

&

DESCRIPTION
120V

REMARKS

VMOO33

AC CORD

KR -51

CORD

BUSH

932006022

FUSE

HOLDER

ST6-125V5A

TIME

LAG

9 199 5 1 060

CONNECTOR

170923-1

9 199 5 1 157

PIN/R

170121-1

9 199 5 108 6

CONNECTOR

170924-1

9 199 5 6 1 7 0

PIN/P

60620-1

ME-202V1

AC

SDE3SB-l

MAIN

1-480424-0

CONNECTOR

919951066

LINE

FUSE

100V/120V

for

U.S.A

FH-032

100V/120V

F I LT E R

SWITCH

100V/120V

1-480426-0

/I

212D34300451

TRANSFORMER SBCTIl

EHBSC33B01TB

DC POWER SUPPLY

EHBSC33B01T

DC POWER SUPPLY

VMl182

AC CORD

10OV/120V

100V

3-3

SBCTII

for

JAPAN

~
~

bt

WH ITE
TO FAN
CONNECTOR 5
(/-480304-0)

TRANSFORMER
S8C T21
r:=;j"j"
BLUE

I

l

BLACK

~

-':;",~~-i

~~ADN~E

»'nO

TO FLOPPY UNIT I
TO FLOPPY UNIT 2
CONNECTOR 8
CONNECTOR q
(1-~80424-0) PIN
(f-4B~4?4-0)
11'
I "70121-/1 11 ;
I

r? :(

r? :!

(
(

~I:.cl~
~1:3:S ~

=-=1~4J

LJLJ~

uu~

[.....-.----.......-.=..

a':"
n8

...---"-----@:NITONTV

PIN

ClI"q:
~ '606~-J)
l.u -.J ~
-.J ~.

Q:cnQlo

Q:Qlcno

PIN
112
(/70121-1 J~

CONNECTOR II
(l70Q24-/J
CONNEC TOR 10
(J70Q23-/)

03:

-::::J

cn~

-to
~3:

CD_

c»
-tn
ON
2~

l:J~
~u

n<

~~

8

~

~~

<
l

PIN
1170121-1 J

CONNECTOR 6
(/-480424-0)

~~--------4-~~~~~-+----~~--~

CONNECTOR 7 ~....,.....~_
(/-480426-0)
PIN
(6'06'20 -I J

w

~l.t.J

~~I~~ ~~~
I

AC LINE FILTER
(NE-202VJ
CONNECTOR 2
(170Q24-/)
CONNECTOR I
(J70Q23-1)

~
::i

~

-=CHASS/S

1 ; 2 PINl60620-i)
1 : 2 PIN(/ 10121-1 J

TO CONTROL PCB.DCPS

,-+---~.J...lI:..U---t ]-- CONNECTOR 12

or

(/- 480270 -0)

"'-+--+-J-.f-+--~:..:.a.:..:..:~--t '----

U
I..J
~~~

~I ~I

l4J
~

~~"q:

-.J
en

-..J
CQ

t3
""t

~~
~~ ~~4.,
"{

[5 '"

~~

~~

:ac:1~1~1~

PIN ( i 1012/-1 J

LJUULJ
"q:~"q:oo::(

~c6a5~

AC AC IDC+5V IDC +5VIDC 1~2~1 DC +12V IDC+12V SG
27 V 18 V
. . SG
-12V SG
DC POWER SUPPLY
(EHB S~J380IrB)
MODEL
AUSTRALIA
I

~ AC

CORD

VMOIIB

JD-700M-(j

1-534-82012
~Sl)(I),.,.S" ...

VMOOQq

CONNECTION
AC SWITCH OUT-PIN2-CONNECTDR3-PIN4
240V AC

JD-700M-A

BRITISH
JD-700M-E
EUROPE·

*'AC CORD

_f-

...---f--+-f---f.--+-t-f--f----=.:~~:___i- ~ -

~

CONNECTOR
(170q2J-I)

6

------+-4--If---+---+-+-----f--~~~---i ..

....-:-~~:-t

""L

240V AC
220 V A

I

3.1.6 JD-700Mn40M 220V/240V
AC/DC DISTRIBUTION PARTS LIST

L OC.

PART

NO.

PART NAME & DESCRIPTION

REMARKS

AC CORD

240V

for Austral ia

VM0099

"

220V

for C ontirent(EUI-DPe)

1-534-132012

"

240V

for British

VM 0418

KR - 51

CORD BUSH

FH-033

FUSE HOLDER

220V/240V

S T - 2.5 A

TIME LAG FUSE

220V/240V

919951060

CONNECTOR

170923-1

9 1 995 1 157

PIN/R

170121-1

9 1 995 1 086

CONNECTOR

170924-1

9 1 9 9 561 7 0

PIN/P

60620-1

ME-202V1

AC LINE FILTER

SDE3SB-E-1

MAIN SWITCH

1-480424-0

CONNECTOR

9 1 995 1 066

220V/240V

1-480426-0

"

212D34300461

TRANSFORMER SBCT21

EHBSC33B01TB

DC POWER SUPPLY

3·5

220V/240V

~
~

II
bA 2so.-uH
L

Z?Vrv

==

+

CI

+
CI4-Z
t

4r;oa.f

SJV

C

o

IOOO~~

.~

35V

R/6-2

:E

m

(VBSt

3W

el/

.

i~~1

K

:xJ

en
C

1 I 1 '~4.8kjll

"U
."

r-

-<

q

iii

L21

. 6~~50""H
.I

f

t/2V

I

R22

C24-2
+

+C25

0)

==

3.3A""t..x

+

3.3.(2
w

50V

Z200~F

!!!

C24-1

R26-2
a.56~

3W'

471'F

2SV

G

~

Ie .3

+

Gr
+C32
ZZO,lflF
16V

D3/
IOEI

~
~

ZZOO,MF
16V

IBv

o

-I

16V

FS2

:J:

g:
~

4'l/tf:

e21

x.:...

mo
3: 0
»3:

ens:

04-/

W

00

-~
0
0

35V

CI5

"

en'-

.... ::;,

IOOO,llF

t

(.

sov

+5V
5 A",~

0.1

A _'-"

-12 V

---

3.1.8 PARTS LAYOUT (EHBSC33B01TB)

•

•
Fig. 3 - 2

PARTS LAYOUT DWG.

3-7

3.1.. 9 JD-700Mn40M DC POWER SUPPLY (EHBSC33B01TB) PARTS LIST

L OC.

PART

PART NAME & DESCRIPTION

NO.

DBI

KBPC802

Diode bridge

lOA 200V

DB2

S2VB

Diode bridge

2A

ICI
IC2

EHD-SC305RI
EHD-SC312Rl

Regulation IC
Regulation IC

IC3
Qll, 21

I117912CT
2SC2334

Regulation IC
Transister

Q12, 22

2SA777

Transister

Dll, 21

S6K

Diode

D31

lOEl

Diode

Lll, 21
Rll, 21

SN14-561
ERG2ANJ681

Choke Coil
Metal

6A 250~H
680Q 2W

R12, 22
RIJ, 23
R14, 24

ERD25TJ332
ERD25FJ330

Carbon

3.3kQ
33Q

Carbon
Carbon

200V

1/4W
1/4W
1/4W

Metal

560Q
1.8kQ

ERF2AKRIO

Non flame

O.IQ

2W

R16-2, 26-2

ERF2AKRIO

Non flame

O.lQ

2W

R17, 28
R18, 27

ER025CKF4711

Metal

4.77kQ 1/4W

ER025CKF6201

I Metal

Cl

ECET50R472SL

Electrolytic

4700~F

50Y

CII, 21

ECEAIES470

Electrolytic

47~F

25V

C12, 22

ECEAIESIOO
ECEAIVSI02

Electrolytic
Electrolytic

IO~F

25V
35V

Electrolytic
Electrolytic

2200~

C15, 25

ECEAICS222
ECEAIHS470

47~F

16V
50V

C16, 26

ECEAICSIOO.

Electrolytic -

IO~F

16V

C31

ECEAIHS471

Electrolytic

470~F

50V

C32

ECEAICS221

Electrolytic

220~F

16V

Cl7

ECQMIHI03MZ

Plastic film

IO,OOOPF 50V

C27
C13, 23

ECQMIHl54MZ
ECKDIH332KB2

Plastic film
Ceramic

150,OOOPF 50VI
50V
3300PF

FSI

Fuse

F5A

FS2

Fuse

F2A

R15, 25

ERD25FJ561
ERGIANJ182

Rl6-1, 26-1

~

C14-1,14-2
C24-1, 24-2

F2041A20L-IOP

I

6.2kQ

Terminal

3·8

lOOO~F

IW

1/4W

REMARKS

3.2 JD-800M/JD-840/JD-850M POWER SUPPLY

3.2.1 BLOCK DIAGRAM

JD-800M/840M power supply generates 4 kinds of stabilizedDC power supply of +24V, +12V, +5V and -12V
which are required for control PCB, floppy disk and
monitor TV.

Constructionally, all circuits are assembled on one PCB
for easy maintenance and inspection.
Block diagram of power supply is shown below.

r- - - - - - - - - - - - - - - - - -

2OV"v
220V"v

I--

NOISE
FILTER

-I

1

I

I·
I
I
32V"v

I
I
I

I
I

I--

I
I

~ I--

I
I
I
I
I

I

240 V"v

-

-

I

L-.

r-

'--

I
I

a:

w

a:

SWITCHING

Z



+12V :-:-:
OUTPUT
RETURN

+5V:-:-:
OUTPUT

I

1

1

I

I
I
I

1
I
I

lSV""
1
I

eCONTROLPCB
eFDD

+5V
RETURN

I

1

eCONTROLPCB
eMONITOR TV

,.... +12V

I
I

RE.GULATOR

I

eFDD

-+24V
RETURN

I
I
I
I
I

:E

en

OUTPUT

1

SWITCHING
REGULATOR

0
u.

.... +24V:-:-:

I

SWITCHING
REGULATOR

12V
SERIES
REGULATOR

-12V
RETURN

1
I
I
I
I

eCONTROLPCB
eFDD

-12V :-:-:
OUTPUT

1_____E!jE!.S£~~l.T.~ ______ ..J

- 103V"v

e FDD

SOV"v

e FAN

~

Fig. 3 - 2

POWER SUPPLY BLOCK DIAGRAM

3.2.2 SPECIFICATION (JD-800M/JD-840M)

• Input voltage:

120V "v ±10%
220/240V"v ±10%
• Input frequency:
50Hz or 60Hz (flXed) ±1%
• Output voltage/current: 24V 1.7 A max.
12V I.SA max.
SV 6.2Amax.
-12V 0.3 SA max.
±S% or less
• Overall stability:

3-9

~

N

W

»'nO

-do
Co

no

-c3:

TV
TRAIVSFCRMER

ISlJ£..I.J.J
I

I

~3:

me»
-tn

d.nTO

\, 61' ....

(-{i CONNECT IO,II-I1:0CJ210-0J
PIN" 10121-1)

FLoppy UNIT I

J-

FI

r Sfrt
"i 24,> ~j
=.."l:P

_~_J==>TO
1_-,_

IS ...

,

GREEN

"" ...

"."

Of

FLOPPY UNIT 2

J"
(-{1CONNECT'"'-480:??O-O)
PIN [llOI.?! -I J

FANIWEJ 5584'
~T

I-~-I FUSE HOLDER

I
I

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I FH-032 I

I FUSE
I_:J IST6-L?5VSA)
IN

AC CORD
IV/lt70033)

I

t':_J

CONNECT/3
lI-tJ00304-0Ifor JD800lA
1/-4B0100-0Jfor JD 840 U·
PIN

1170121-1} for JDBOO
1350550 -I) for JD 840

l

3.2.4 JD-800M/840M 1OOV/120V
AC/DC DISTRIBUTION PARTS LIST

LOC.

PART

NO.

PART NAME & DESCRIPTION
120V

REMARKS

VM0033

AC

KR - 51

CORD BUSH

932006022

FUSE HOLDER

100V/120V

ST6-125V5A

TIME LAG FUSE

100V/120V

919951060

CONNECTOR

170923-1

9 1 995 1 157

PIN/R

170121-1

9 199 5 108 6

CONNECTOR

170924-1

9 199 5 6 1 7 0

PIN/P

60620-1

GT-205Vl

AC LINE FILTER

SDE3SB-l

MAIN SWI TCH

1-480424-0

CONNECTOR

919951056

CORD

for U.S.A

FH-O 3 2

100V/120V

1-4804:26-0

"

256034300471

TRANSFORMER SBCT31 100V/120V

350550-1

PI N/R

EHBSC34BOITB

DC POWER SUPPLY

F126-5P

TERMI NAL

VM1182

AC CORD

Only for ID 840M

100V

3 - 11

for JAPAN

w
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»'0 0

CCYvNECT 71/70.923-11 PINtl70121-1 J
fONNECT81170SJ2t1-/) PIN(60620-IJ
I

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t

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12 1

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tlZCfAN6E.
-12 V

Sa (tfll)

TV

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c 3C
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==:::::>TO CON TROL PCB
DCPS
S r.. (~J't) - -'-u
1'- CONNECTS) (/- 480270-0 I
tS'"v REJ) - { - PIN (170121-11
oS It

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CC)

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z~
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\~
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.Jl.240Y

z
I=}~~==:::>TO FLOPP, UNITI

r{-- CONNECT
10 1I-48J2iO-OJ
PIN 1110121-1 )
--[.

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0-

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CCYVNECT2

1J70.9~-1J1

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CONNECT I 1 1
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111012./-1 J
.

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l

trRAY
FAN
(WEJS584J ( ACI03V
~ [I

CONNECT6 (1-48030S -0)
LCONNECTS
(, 1-4m304 -0)
l

C

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IN ::::>

PIN (60620-/)

AC 10J v

BLACK

PIN( I

I

CI)
L_.-J

MAPK*
MODEL

AC CORD
lfiiiAustral,"r)
VMO//8
For (nnt;f1f'f?NEiJrOIlel v/~"OO9.9
IFnr British

as

C(JVNECT3 COfl."IECTION
/WAIN POWERSWIT(j-/OUT-~/N-COVf\f(!3-3
Vl1;J../N POtVf,~SI,1'lTCHOUI -2PIN-,>((l{IINEa'J-S
HAIN PCJvi/ERSJfITQjOUi -2PIN-C(\fbVECT3-3

==>TO FLOPPY UNITI
CONNECTI2
(/-400304 -0 J for JD800 U
l/-4B01CXJ-O }for' JD840U

TO FROPPY UNIT 2
CONNECT 13
.
(/-4803J4-01 for JDOCJOU
I/-480700- 0Jfor JD8L10U
PIN
(/7[)I21-1 J for JDfiOO
(350S50-lIfcr JD8LJO

1

3.2.6 JD-800M/840M 220V /240V
AC/DC DISTRIBUTION PARTS LIST

L OC.

PART

PART NAME & DESCRIPTION

NO.

REMARKS

.. -.-

AC CORD

VM 0418

240V

for Austraria

V MO 0 9 9

"

220V

for Con tinen t(Europe)

1-534-82012

"

240V

for B r i tis h

KR- 51

CORD BUSH

F H- 0 3 3

FUSE HOLDER

220V/240V

ST-2.5A

TIME. LAG FUSE

220V/240V

9 1 9 951 060

CONNECTOR

170923-1

9 1 995 1 157

PI N/R

170121-1

9 1 995 108 6

CONNECTOR

170924~1

9 199 5 6 1 7 0

PIN/P

60620-1

GT-20SV1

AC LINE F I L rER

SDE3SB-E-l

MAIN SWI TCH

1-480424-0

CONNECTOR

9 1 995 1 066

220V/240V

1-480426-0

"

256034300481

TRANSFORMER SBCT41

220V/240V
Only for JD840M

350550-1

PIN/R

EHBSC34BQ1TB

DC POWER SUPPLY

F126-5P

TERMINAL

\

3·13

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~B~ 14£l¢f-mu ~ E
DC R:M£R

TRN6fCR.ER
- OYo

1 - 1 - - - - -~
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III

L1\1

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C

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I

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PlN(l7012 -I

-,

2

n

::==> 10 Fl.1PPY UtllT 2

~

CWt£CT 9 \\-400270-{»

~

PIN(17012l-

moWN

~------

====>

10 ft..a'PY UNIT 1

roHNErT 10

fl-4OOD1~

100"

b4OO7OO-O

T

PIN

torex- JD-84OH.J/B5(l-tU
JD-8:XMJ/lnoHJ

~ 10 fLOPPY UNIT 2

it fUSE
ACOOV
K11SV
CONt-.a::CT 1
CONNECT 1
TO SWITCH 10 fLCf'PY un 1

4"

CHASSIS

C

C;;
-f

:::!

I

200 " ~ t N:. CORD
230"

~

===:> TO

I

11 Sv

3:

(")

1O~v6

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0

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r¢;
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FUSE HOLDER
AC CORD
CORD COLOR
FUSE
VMOO33
S T6-125v SA
IG)WHITE ®8LACK
FH032
VM0418
@BLUE G)BROWN
FH033
ST-2.5A
II
VMOO99
®BLUE ®BROWN FH033
II
B53 xO.7Smm:l ®BLUE @BROWN FH033

Z

8.2.8 JD-850M 220V/240V, 120V
AC/DC DISTRIBUTION PARTS LIST

L OC.

PART

NO.

VM 0418
V MO 0 9 9
1-534-82012

DESCRIPTION

PART NAME &
AC

CORD

"
"

REMARKS

240V

for Austraria

220V

for ContinentCEurope)

240V

for British

KR - 51

CORD BUSH

F H- 0 3 3

FUSE HOLDER

220V~/240V

ST-2.5A

TIME LAG FUSE

220V/240V

9 1 995 1 060

CONNECTOR

170923-1

9 1 995 1 157

PI N/R

350650-1

9 1 995 1 086

CONNECTOR

170924-1

9 199 5 6 1 7 0

PIN/P

350690-1

GT-205V1

AC LINE FILTER

SDE3SB-E-l

MAIN SWI TCH

220V/240V

SDE3SB-1

MAIN SWITCH

100V/120V

1-480706-0

CONNECTOR

919951066

CONNECTOR

256034300481

TRANSFORMER SBCT42 220V /240V

350550-1

PIN /R

EHBSC34B01TB

DC POWER SUPPLY

F126-5P

TERMINAL

VM0033

AC CORD

120V

for U.S.A

VM1182

AC CORD

100V

for JAPAN

932006022

FUSE HOLDER

1 OOV /120V

ST6-125VSA

TIME LAG FUSE

1 OOV /120V

-

3 - 15

-

1-480707-0

--

FH-032

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3.2.10 PARTS LAYOUT (EHBSC34B01TB)

...

o

+0'"
'"

-

011

•

011

"¥""

AI'
,

BLACK

1.J4p

..

__.J!_ ~e
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All

FS I F5A

•

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I

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+

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f

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FS3 F2A
0.J·3

SWM-IIIA
Fig. 3 ·4 PARTS LAYOUT DWG.

C4.

DaD

FSl F5A

CDC42

3 -17

•

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+

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3.2.11 JD-800M/840M/850M DC POWER SUPPLY (EHBSC34B01TB)
PARTS LIST

PAR.T NAME & DESCRIPTION

L 0 C.

PART

DBl, 2
DB3

KBPC802

Diode bridge
Diode bridge

ICI

S2VB
·EHDSC312Rl

Reguration IC

IC2
IC3

EHDSC324Rl
EHDSC305Rl

Reguration IC
Reguration IC

IC4

IM7912CT

Reguration IC

QII,21,31

2SC2334

Transister

Q12,22,32

2SA777

Transister

DIl,21,31

S6K20
lOEl

Diode
Diode

Rll, 21

SN14-561
ERG2ANJ821

Choke coil
Metal

R3!
RI2,22,32

ERG2ANJ.681
ERD25TJ332

Metal

RI3,23,33

ERD25FJ330
ERD25FJ561
ERGIANJl82

Carbon
Carbon

D41
Lll,21,31

NO.

-

2A lOOV

820Q

3W

680Q
3.3kQ

2W

1/4W

Metal

33Q
S60Q
l.8kQ

1/4W
1/4W
lW

ER025CKF6201

Metal

6.2kQ

l/4W

ER025CKF477l

Metal

4 .. 77kQ

l/4W

ERF2AKRIO

Non flame

O.lQ

R27
R39

ER025CK332l
ER02 SCKF62RO

Metal
Metal

3.32kQ
62Q

1/4W
1/4W

R40

ER025CKF2S00

Metal

250Q

l/4W

R26
Cl

ER025CKF620l
ECET63R332SL

Metal
Electrolytic

6.2kQ

1/4W

3300llF

63V

C2

Electrolytic
Electrolytic

4700llF
lOOIlF

SOV

ClI,2l,3l

ECET50R472SL
ECEAIJSlOl

Cl2,22,32
C13,23,33

ECEAIES470
ECEAlESIOO

Electrolytic
Electrolytic

471lF
lOIlF

C14, 34

ECEAlCSlOO

Electrolytic

lOIlF

C24

ECEAlHSORl

Elec.trolytic

O.lIlF

C17, 27

ECEAlVSlO2
ECEAlCS222

1,OOOIlF
2,2001lF
47 0 llF

35V

16Y

R14,24,34
R15,25,35
R16, 37R17, 36
Rl8 J 28,
38-1,38-2

Carbon

2W

63V
25V

2SV
l6V
SOy

C4l

ECEAlHS47l

Electrolytic
Electrolytic
Electrolytic

C42

ECEAlCS22l

Electrolytic

220llF

ECKDlH332KBZ
ECQMlHlO3MZ

Ceramic
Plastic film

50V
3300llF
lO,OOOPF SOV

FSl, 2

Fuse

5A

FS3

Fuse

2A

c37-1,37-2

C16,26,36
Cl5,25,35

3·18

REMARKS

l6V
SOy

I

4. KEYBOARD
4.1 OUTLINE

This keyboard consists basically of microprocessor,
P-ROM and keyswitch.
As primary functions, it provides 4 kinds of shift functions, i.e. unshift, shift, control and control shift, CAPS·
LOCK and CAPSLOCK shift and data code output is
generated by ASCII code.

4.2 KEYBOARD LAYOUT

I PE1 IPE21 PE31 PE·I
*'

*'

1

I

2

3

0

*2 lamp key

.,
ASCII

I

BRITISH

I

FRENCH \GERMAN

[JJiUJiITJiOJ
I
r:l1Q]![JlrTl
LJi
I
3

I:

3

3

I

t

1\

!~

3

CD'CD:[JJ;~
I ;
CD ITJIITJ!C]
)

I

m m Dl0
\
I \
(:
D'D,ITJIGJ
I

y
II
~i

,

~ ~ ~

0 0 0 c:J
C] C] IT]

Fig. 4 - 1

G

KEYBOARD LAYOUT (ASCII I -

4-1

E
N

T
R
Y

PES

IPES I

4.3 KEYBOARD CODE TABLE

~E

CTRL (UNSHIFT)

UNSHIFT

7 6 5 4

3 2 1 0

7 6 5 4

PF1

0

0

C

0

PF2

0

1

C

~"IVBJL""

~

SHIFT

CTRL (SHIFT)

COCE

COCE

7 6 5 4

3 2 1 0

7 6 5 4

3 2 1 0

PFl

0

0

C

0

1

PF2

0

1

C

1

0

2

C

2

0

3

C

3

C

4

3 2 1 0 SYMBOL

PF3

0

2

C

2

PF3

PF4

0

3

C

3

PF4

PF5

0

4

C

4

PF5

0

4

PF6

0

5

C

5

PF6

0

5

C

5

PF7

0

6

C

6

PF7

0

6

C

6

C

7

PF8

0

7

C

7

PF8

0

7

PF9

1

0

0

0

PF9

1

0

0

0

0

1

PF10

1

1

0

1

PF10

1

1

PF11

1

2

0

2

PFll

1

2

0

2

PF12

1

3

0

3

PF12

1

3

0

3

PF13

1

4

0

4

PF13

1

4

0

4

PF14

1

5

D

5

PF14

1

5

D

5

PF15

1

6

D

6

PF15

1

6

0

6

PEl

1

7

0

7

PEl

1

7

0

7

PE2

1

8

0

8

PE2

1

8

0

8

1

9

0

9

A

0

A

PE3

1

9

0

9

PE3

PE4

1

A

0

A

PE4

1

PE5

1

8

D

8

PE5

1

8

D

B

PE6

1

C

0

C

PE6

1

C

0

C

1

3

1

F

1

1

2

1

E

1

2

3

2

F

2

"

2

2

E

2

3

3

3

F

3

#

2

3

E

3

4

3

4

F

4

$

2

4

E

4

5

3

5

F

5

%

2

5

E

5

6

3

6

F

6

&

2

6

E

6

7

3

7

F

7

2

7

E

7

8

3

8

F

8

(

2

8

E

8

2

9

E

9

5

F

9

F

9

3

9

F

9

)

0

3

0

F

0

-

3

A

F

A

•

2

A

E

A

2

0

E

0

=

3

0

F

D

1\'

5

E

9

E

,...,

7

E

8

E

DEL

7

F

B

F

DEL

7

F

B

F

q

7

1

8

1

Q

5

1

9

1

w

7

7

B

7

W

5

7

9

7

e

6

5

A

5

E

4

5

8

5

r

7

2

8

2

R

5

2

9

2

t

7

4

8

4

T

5

4

9

4

y

7

9

B

9

y

5

9

9

9

u

7

5

B

5

U

5

5

9

5

i

6

9

A

9

I

4

9

8

9

0

6

F

A

F

0

4

F

8

F

.
p

7

0

8

0

P

5

0

9

0

[

5

.8

9

8

{

7

B

B

B

4-2

KEYBOARD CODE TABLE (CONT'D)

*]

5

0

9

0

~
}

7

0

B

0

RETURN

0

0

C

0

RETURN

0

0

C

0

a

6

1

A

1

A

4

1

8

1

~

UNSHIFT

CTRL (UNSHIFT)

SHIFT

CTRL (SHIFT)

CODE

CODE

SYMBOL

7 6 5 4

3 2 1 0

7 6 5 4

3 2 1 0 SYMBOL

7 6 5 4

3 2 1 0

7 6 5 4

3 2 1 0

s

7

3

B

3

S

5

3

9

3

d

6

4

A

4

0

4

4

8

4

f

6

6

A

6

F

4

6

8

6

9

6

7

A

7

G

4

7

8

7

h

6

8

A

8

H

4

8

8

8

j

6

A

A

A

J

4

A

8

A

k

6

B

A

B

K

4

B

8

B

I

6

C

A

C

L

4

C

8

C

3

B

F

B

+

2

B

E

B

0

6

0

A

0

7

C

B

C

A

LINE
FEED

0

A

C

A

*@

4

0

8

*\

5

C

9

LINE
FEED

i

,

C

0

A

z

7

A

B

A

Z

5

A

9

A

x

7

8

B

8

X

5

8

9

8

c

6

3

A

3

C

4

3

8

3

\

C

v

7

6

B

6

V

5

6

9

6

b

6

2

A

2

B

4

2

8

2

n

6

E

A

E

N

4

E

8

E

m

6

0

A

0"

M

4

0

8

0

2

C

E

C

3

C

F

C

F

E

2

E

E

E

<
>

3

E

/

2

F

E

F

?

3

F

F

F

TAB

0

9

C

9

TAB

0

9

C

9

(SP)

2

0

E

0

(SP)

2

0

E

0

7

3

7

F

7

7

3

7

F

7

8

3

8

F

8

8

3

8

F

8

9

3

9

F

9

9

3

9

F

9

-

2

0

E

0

-

2

0

E

0

4

4

3

4

F

4

5

3

5

F

5

4

3

4

F

5

3

5

F

5

I

6

3

6

F

6

6

3

6

F

6

+

2

B

E

B

+

2

B

E

B

1

3

1

F

1

1

3

1

F

1

2

3

2

F

2

2

3

2

F

2

3

3

3

F

3

3

3

3

F

3

ENTRY

0

0

C

0

ENTRY

0

0

C

0

0

3

0

F

0

0

3

0

F

0

•

2

E

E

E

•

2

E

E

E

HOME

0

F

C

F

HOME

0

F

C

F

t

0

E

C

E

t

0

E

C

E

+-

0

8

C

8

+-

0

8

C

8

0

C

C

C

0

C

C

C

0

B

C

B

0

B

C

B

.j.

.j.

4·3

KEYBOARD CODE TABLE (CONTrD)

~

CAPSLOCK and
UNSHIFT

CTRL
(CAPSLOCK & UNSHI FT)

CODE

SYMBOL
PFl

7 6 5 4

3 2 1 0

0

0

~
CODE

7 6 5 4 3 2 1 0 SVMB>L

C

PFl

0

CAPSLOCK and
SHIFT

CTRL
(CAPSLOCK & SHIFT)

7 6 5 4

3 2 1 0

7 6 5 4

3 2 1 0

0

0

C

0

C

1

PF2

0

1

C

1.

PF2

0

1

PF3

0

2

C

2

PF3

0

2

C

2

PF4

0

3

C

3

PF4

0

3

C

3

PF5

0

4

C

4

PF5

0

4

C

4

PF6

0

5

C

5

PF6

0

5

C

5

PF7

0

6

C

6

PF7

0

6

C

6

PF8

0

7

C

7

PF8

0

7

C

7

PF9

1

0

D

0

PF9

1

0

D

0

PF10

1

1

0

1

PF10

1

1

0

1

PF11

1

2

0

2

PF11

1

2

D

2

PF12

1

3

0

3

PF12

1

3

0

3

PF13

1

4

D

4

PF13

1

4

D

4

PF14

1

5

0

5

PF14

1

5

0

5

PF15

1

6

D

6

PF15

1

6

0

6

PEl

1

7

0

7

PEl

1

7

0

7

PE2

1

8

0

8

PE2

1

8

0

8

PE3

1

9

0

9

PE3

1

9

0

9

A

0

A

PE4

1

A

0

A

PE4

1

PE5

1

B

0

B

PE5

1

B

D

B

PE6·

1

C

D

C

PE6

1

C

0

C

1

3

1

F

1

I

2

1

E

1

2

3

2

F

2

2

2

E

2

3

3

3

F

3

#

2

3

E

3

4

3

4

F

4

$

2

4

E

4

5

3

5

F

5

%

2

5

E

5

6

3

6

F

6

&

2

6

E

6

7

3

7

F

7

2

7

E

7

8

3

8

F

8

(

2

8

E

8

2

9

E

9

5

F

9

F

.

.,

9

3

9

F

9

)

0

3

0

F

0

-

3

A

F

A

•

2

A

E

A

-

2

0

E

D

=

3

0

F

0

/\

5

E

9

E

-

7

E

B

E

DEL

7

F

B

F

DEL

7

F

B

F

Q

5

1

9

1

Q

5

1

9

1

W

5

7

9

7

W

5

7

9

7

E

4

5

8

5 ,

E

4

5

8

5

R

5

2

9

2

R

5

2

9

2

T

5

4

9

4

T

5

4

9

4

5

9

9

9

9

9

9

y

5

5

9

5

U

5

5

9

5

4

9

8

9

I

4

9

8

9

0

4

F

8

F

0

4

F

8

F

P

5

0

9

0

P

5

0

9

0

[

5

B

9

B

{

7

B

B

B

Y

5

U
I

4-4

KEYBOARD CODE TABLE (CONT'D)

~

7 6 5 4

3 2 1 0

]

5

0

9

0

~

RETURN

0

0

C

A

4

1

8

S

5

3

9

CAPSLOCK and
UNSHIFT

CODE

SYIV8)l.

CTRL
(CAPSLOCK & UNSHIFTI

CODE
7 6 5 4 3 2 1 0 SYI\tB)l

CAPSLOCK and
SHIFT

CTRL
(CAPSLOCK & SHIFT)

7 6 5 4

3 2 1 0

}

7

0

B

0

RETURN

0

0

C

1

A

4

1

8

3

S

5

3

9

3

7

6 5 4

3 2 1 0
0

0
-

1

0

4

4

8

4

0

4

4

8

4

F

4

6

8

6

F

4

6

8

6

G

4

7

8

7

G

4

7

8

7

H

4

8

8

8

H

4

8

8

8

J

4

A

8

A

J

4

A

8

A

K

4

B

8

B

K

4

B

8

B

L

4

C

8

C

L

4

C

8

C

3

B

F

B

+

2

B

E

B

6

0

A

0

7

C

B

C

0

A

C

A

@

4

0

8

0

\

5

C

9

C

LINE

0

A

C

A

,

LINE

5

A

9

A

FEED
Z

5

A

9

A

X

5

8

9

8

X

5

8

9

8

C

4

3

8

3

C

4

3

8

3

V

5

6

9

6

V

5

6

9

6

B

4

2

8

2

B

4

2

8

2

N

4

E

8

E

N

4

E

8

E

M

4

0

8

0

M

4

0

8

0

2

C

E

C

3

C

F

C

2

E

E

E

<
>

3

E

F

E

/

2

F

E

F

?

3

F

F

F

TAB

0

9

C

9

TAB

0

9

C

9

(SP)

2

0

E

0

(SP)

2

0

E

0

7

3

7

F

7

7

3

7

F

7

8

3

8

F

8

8

3

8

F

8
9

FEED
Z

9

3

9

F

9

9

3

9

F

-

2

0

E

0

-

2

0

E

0

4

3

4

F

4

4

3

4

F

4

5

5

3

5

F

5

5

3

5

F

6

3

6

F

6

6

3

6

F

6

+

2

B

E

B

+

2

B

E

B

1

3

1

F

1

1

3

1

F

1

2

3

2

F

2

2

3

2

F

2

3

3

3

F

3

3

3

3

F

3

ENTRY

0

0

C

0

ENTRY

0

0

C

0

3

0

F

0

0

3

0

F

0

2

E

E

E

2

E

E

E

0

F

C

F

HOME

0

F

C

F

0

E

C

E

t

0

E

C

E

0

8

C

8

0

8

C

8

0

C

C

C

0

C

C

C

0

B

C

B

0

B

C

B

0

HOME

t

-.j.

-.j.

4·5

.4.4 DESCRIPTION OF OPERATION
4.4.1

Push key switch, then P-ROM address output is generated
by microprocessor and code data output is generated from
P-RQM. Additionally, key strobe output is generated.
When REP key and a data key are pressed in this order,
key strobe signals are repeatedly produced at the period
of about 1oOms ~hi1e the REP key is kept pressed.

OUTPUT TIMING
T4

~I

i-I---

-----i

l

KEY IN

,~

DATA OUT

j~

STRO BE

..

T2

T1

T1
T2
T3
T4

T3

=
=

=
=

20ms MAX.
500~s MAX.
5 - 10~s
20ms MIN.
T4 represents the required minimum
key on time. There are cases where no
signal is produced if the key on time is
less than this level.

REPEAT TIMING
REPEAT

STROBE

I

Il1+T~L

H

=:

100ms

::

Fig. 4 - 2 TIMING CHART

~I

4.4.2 Indicated in No.2 of this manual.

MPD8035LC microprocessor

4.4.3 SHIFT MODE

Shift condition consists of 5 kinds of UNSHIFT, SHIFT,
CTRL UNSHIFT, CTRL SHIFT, CAPSLOCK. On powerswitching in, shift condition is UNSHIFT. Each shift
condition is held while corresponding SHIFT key is made
on.

In addition, if CTRL key is turned on during UNSHIFT,
CTRL UNSHIFT condition is established. When CTRL
key is made on during SHIFT, CTRL SHIFT condition
appears.
By turning CAPSLOCK key on, UNSHIFT or SHIFT
condition can be fIxed to CAPSLOCK condition. Then
CAPSLOCK key lamp lights.

However, SHIFT LOCK key locks shifted condition
electrically when once made on. Then SHIFT LOCK
key lamp lights. On shift lock condition, shift condition
does not change even if SHIFT LOCK key is turned on
again. Release of shift lock is mode by turning shift key
on.

Also, in case that CAPSLOCK condition is fIXed by
CAPSLOCK key, it can be returned to UNSHIFT or
SHIFT condition by turning CAPSLOCK key on again.

4-6

~

-

8035
P21

... 5V

JI

P261J'I
PZS H

_ __

P24 H

---

in

CI)

m

n

l:

7lzJ
rl

'1415'

IH

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-<
~

m.
3:
l>

::u

g

iii

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tSV

~

!n

l>

c

CD

o

P/

~

i~XTAL'
ilpCl

CD

l>

CI)

n

j

~txTALZ
611HJ

JUUUl..
GI1HI

IJ

+SV

~

HV

TO

......

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--=tJ-

+It'

+5V

tSV

l-G"S;lS

®f~~

fiT CPs
\::..:)LCK

,------

J

m

t

tn

f

1.I¢+.rv

U.I.
H~F

l1.tIIF 47~1'

Cf

C.

,U)(6

ltv

"V

CG- ell
ZUVS$

YB

PANEL

•

fiND

z't
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1'en
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...

c
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C' X TAL ()

IJ

-.1. - - - - -"J-H·....L.

-=r~80
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..... , .. " ,

Sf!
.~..~.~.~.~.":~~
;:;'~;.-1';:"
.. ,. *:~:;~
,:f. . . r..... ~
C3
• , • " , . , 0 .......

.D :n::O))l):n:o ~

N~~~~~m

8Z1

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f

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()

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ID

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0

8/8 81'1 0 /6

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o 15

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894

883

o0B2

OBI
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0°'15

0°B?

0°86

0°85

884
g88

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896

0°98

890 889
891

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64

o034

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g'77f
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0

860

f 815 874eJ

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Fig.4 ·3

031
0

o032

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0SB
859 o

073
0

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872
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05'7
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827

026 025 0 4
0 0 02

040

842 .g41

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0°56

o055

0°Z3

gzzf~

0;°'1'.8

03'1
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054
0

070 069 0tij
8?/ 0
00

00

LAYOUT (PATTERN SIDE)

043
0

* *

i

b ,0
0 5 ,0
04 . 0
03 . 0
02 , 0
0 I,
, 00
~
~
~
~
0
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.......
"
0-.
LI'\
A
VJ
N

~

o 30 0 2 90028
00

845 844

048 0 4 7 046
00
0

o062

0°63

00

033
0

C5

-H-

-~-

iTO0 7
~

-ooot

o

C4

HD7404 p

J

20

o

riB

-0

00

,

HD74-04P

Ri3

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_ - 0

ZB

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0

0

sua aRIGHT

0

c

0

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0

:D

<
n
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n
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CD

0

»
:D

E

5.8 PARTS LIST

TR-12DG9F

.L 0 C.

PART

NO .

PART NAME &

DESCRIPTION

REMARKS

1

TUWS09Bl-8H

2

TUWB09B2-6

3

TUW80984-2

bracket

4

TUXB0461

Bottom plate

5

TKX4l402Y

PC board holder (right)

6

TKX41502Y
TKXS01201Y

PC board holder (left)

TBMS0190

Model plate

S

TESS128-1

CRT grounded spring

9

3l0JYB39MCN

CRT

10
11

TLYS0336A
TNP81894-12

12

TXAJTV4P179A

Deflection yoke
Main PC board
4P connector

7

Side Plate (left)
- Side Plate (right)

I

Side plate holding

PC board holder (small)

I

-

TPC803417

Outer carton

TPD30551
TPD30552

Filler (left)
Filler (right)
Set cover

TPES4002
N/A
N/A

XTV3+10A
XTV3+SB

Side plate bracket screw

N/A

XTV4+20B

CRT· screw

N/A
N/A

XWA5B
XWG5H14

CRT washer
CRT washer

PC board holder screw

I

I

5 - 11

PARTS LIST (CONT'D) .

TR-12DG9F
L

OC.

PART

NO.

PART NAME

&

DESCRIPTION

REMARKS

IC31

AN5763

IC

IC41

AN5752

IC

Q14

2SC1360ANC

Transistor

Video out

Q17

2SC828AR

Transistor

Vert. sync. amp

Q18

2SC828AR

Transistor

Q44

2SC940-1

Transistor

Horiz. sync. amp
Horiz. out

D31

TVSIOEI

Diode

Boost. up

D43A

TVSBB4A

Diode

Damper

D43B

TVSBB4A,

Diode
Diode

Damper
Rectifier

Diode
Diode

Rectifier
Rectifier

D44
D47
D48

I TVSBB10
TVSSIR20

I TVSIOD4

Vert-OSC drive out
- Sync-sepamp horiz-atc,
OSC drive

,

D49A

TVSBB2A

.Diode

Boost. up

D49B

TVSBB2A

Diode

·Boost. up

D51

TVSBB4A

Diode

Rectifier

L141

TLT047-999

Coil

Peaking coil

L403

TLH80716

Coil

Horiz. width coil

L404

TLH80608

Coil

Horiz.lin. coil

1405

TLP408

Coil

Choke coil

IA06

Tlli80904

Coil

Dramic focus coil

L430

TLH80410

Trans

Horiz. drive trans

R445
T40l

TLP408
TLF80838

Coil
Trans

Choke coil
Fly back trans

C143

ECKDIHlO2KB2

Ceramic

1,00OPF 50V

C145

ECEAlJSlOD

Electorolytic

10ilF

63V

C16l

ECEAlCSlO0

Electorolytic

10ilF

l6V

C302

ECQM05l03JZ

Polyester

O.OlIlF

50V

C303

ECQM05472JZ

Polyester

4,700PF 50V

C304

ECSZ35EFR33V

Tantal

O.331lF

35V

C305

ECSZ16EF4R7N

Tantal

4.71lF

l6V

C3o.6

ECSZ16EF4R7N

Tantal

4.71lF

l6V

I

5 - 12

I

I

PARTS LIST (CONT'O)

TR-12DG9F
.L

0 C.

PART

PART NAME & DESCRIPTION

NO .

REMARKS

C307
C308

ECEAlCSIOO
ECEAOJS330

Electrolytic
Electrolytic

33~F

CJ09
C310

ECEAlCS221

Electrolytic

220~F

ECEAlASlO2

Electrolytic

I, OOO~F lOY

C3ll

ECQM05333JZ

Polyester

O.033~F

50V

C3l2

ECEAlCS471

Polyester

470~F

IbV

C407

ECQM05183JZ

Polyester

O.OI8~F

50V

C402

ECQM05l53JZ

Polyester

O.OI5~F

50V

C403

Polyester

O.033~F

50V

C404

ECQM05333JZ
ECEAlES4R7

Electrolytic

4.7~F

25V

C405
C406
C423

ECQSl392JWT
ECQM05l52JZ
ECEA1CS331

Styrol
Polyester
Electrolytic

3900~F

330~F

50V .
16V

C430

ECQM05l53JZ

Polyester

0.015~F

50V

C44l

ECKD2H222KB2

Ceramic

2200~F

500V

C442

ECQM6682KZ.

Polyester

6800~F

600V

C443
C444

ECQM6682KZ
ECEA25W8R5Z

Polyester
Electrolytic

·6800~F

8.5~

600V
25V

C445

ECEA50VIOOY

Electrolytic

IOO~F

50V

C460
C46l

ECQE12223KZ
ECEAlJSlOl

Polyester
Electrolytic

0.022~

lOO~F

1.2k\
63V

C463

ECEA350Vl

Electrolytic

l~F

350V

C465

ECEA350VR47

Electrolytic

0.471lF 350V

C466

BCQE6104KZ

Polyester

o .IIlF 600V

Ceramic

1,500PF lkV

IO~F

IbV
6.3V-

1500~F

.

C468

.
ECKD3A152KB9.

C491
C602

ECEAlCSI02
ECKD2HI02KB2

Electrolytic
Ceramic

1,0OO~F

C705

ECEAlCS222

Electrolytic

2,200~F

16V

lOOV

l6V

I,OOOPF 500'
l6V

I

I
R143

ERD25TJ470

Carbon

47Q

1/4W

R144

ERD25TJ390

Carbon

39Q

1/4W

Rl51

ERG2ANJ821

Metal oxide

820Q

Rl6lB

ERD25TJ390

Carbon

39Q

1/4W

R170

ERD25TJI03

Carbon

lOQ

1/4W

R171
R172

ERD25TJ103

Carbon

10Q

1/4W

ERD25TJ562

Carbon

5.6kQ

1/4W

5 -13

2W

PARTS LIST (CONT'D)

TR-12DG9F
.L 0 C.

PART

PART NAME

NO.

&

DESCRIPTION

R175

ERD25TJ682

Carbon,

R176

ERD25TJ182

Carbon

6.8kQ 1/4W
1.8kQ 1/4W-

R177

ERD25TJIOJ

Carbon

lOkQ

R30l

ERD25TJ392

Carbon

3.9kQ 1/4W

R302

ERD2STJ683

Carbon

68kQ

1/4W

R303

ERD2SFJ6R8

Carbon

6.8Q

1/4W

R304
R305
R306

ERD2SFJIRI
ERD25TJ125
ERD25FJ2R2

Carbon
Carbon
Carbon

R307

ERD25TJ4R7

Carbon

1.lQ 1/4W
120kQ 1/4W
2.2Q 1/4W
4.7Q 1/4W

R401

ERD25TJ3.33

Carbon

3.3kQ 1/4W

R402

ERD25TJ56~

R403

ERD25TJ273

Carbon
Carbon

5.6kQ 1/4W
27kQ 1/4W

R404

I ERD25TG2201

Carbon

2.2kQ 1/4W

1/4W

,..

R423

ERD25FJ680

Carbon

R432

TRF2SJIOO

R44l
R442

68Q

1/4W

Non flame

lOQ

2W

ERD25FJ6R8

Carbon

6.8Q

R443

TRF2SKR47
ERD25FJ122

Non flame
Carbon

O.47Q
2W
1.2kQ 1/2W

R444

ERD25TJ122

Carbon

1.2kQ 1/2W

R460

ERD25FJI02

Carbon

lkQ

1/4W

R46l

ERD25FJ6R8

Carbon

6.8Q

1/4W

R465
R466

ERD25TJ334
ERD25TJ683

Carbon
Carbon

R468

ERD25TJlO5

Carbon

330kQ 1/4W
68kQ 1/4W
IMQ
1/4W

R472

ERC12GJI04

Solid

lOOkQ 1/2W

R474

ERD25TJ224

Carbon

220kQ 1/4W

R475

ERD25TJIOS

Carbon

IMQ

1/4WI

R601

ERD12FJ681

Carbon

680Q

1/2W

R602

Carbon

lOkQ

R605

ERD25FJlO3
ERD25FJI03

Carbon

lOkQ

1/4W
1/4W

R606

ERD25FJI03

Carbon

lOkQ

1/4W

R701

ERD25FJ5R6

Carbon

S.6Q

1/4W

.

5 - 14

REMARKS

1/4W

-

PARTS LIST (CONT'O)

"TR-12DG9F
"L ~C.

PART

PART NAME

NO.

&

DESCRIPTION

REMARKS

-

CONTROLS
VR31

EVTVOUAOOB 15

Vert. hold

lOOkQ B

VR32
VR33

EVTVOUAOOB54
EVTVOUAOOB14

Vert. height
Vert. lin

50kQ B
lOkQ B

VR4l

EVTVOUAOOB13

Horiz. hold

lMQ B

VR64
VR67

EVMJ6UIOKB26
EVTVOUAOOB25

Focus
Bright

2MQ B
200kQ B

OTHER PARTS
26
27

28

TJC305-l
TJS25640Y

Fuse holder
CRT socket

TMK81516 '
TMM81434

CRT cover
Push revet

XBAIF20NU14

Fuse

-

2A"

I

-

I

I

5 - 15

6. FLOPPY DISK DRIVE
6.1 MINIFLOPPY DISK DRIVE

• Refer to JK874 minifroppy Diskette Storage Drive
Service Manual (2120497 0110*).
• Refer to JK.875 Service Manual (262D497 0157*).

6.2 STANDARD FLOPPY DISK DRIVE

• Refer to JK880 Diskette Storage Drive Maintenance
Manual (2560497 0106*).
• Refer to JK.885 Double Sided Diskette Storage Drive
Service Manual (2560497 0125*).

6-1

7. CONTRO,- PCB

7.3 MEMORY MAP

7.1 OUT·LlNE

This board is composed of LSIs and ICs for controlling
the keyboard, floppy disk drives, CRT display and communication interface. They are also controlled by microprocessor 808SA-2.
The memory is composed of a programmable ROM and
a dynamic RAM.

ADDRESS
HEX 0000

DYNAMIC RAM

7.2 CIRCUIT DIAGRAM

32K BYTES

r----------------,
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HEX 7FFF

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24K BYTES

I
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...-.--=-...,
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HEX EOOO
RAM 2K BYTES

HEX E7FF

USE AS
} CRT BUFFER MEMORY

USABLE

HEX FOOo.
P·ROM 2K BYTES

r------------- -----HEX FFFF

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...J

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-+1---''\.1

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1-£
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Fig. 7 - 1
7-1

} OPTION

7.4 DESCRIPTION OF LSI OPERATION

As to the following LSI, please refer to the SERVICE
MANUAL No.2. (IC. LSI CATALOG)
8085A-2

CPU

8257

Programmable DMA controller

8275

Programmable CRT controller

8251

Programmable communication interface

MB8866 (FD 1791 )
Floppy disk formatter/c'ontroller
4116 Family

16.384 x 1 bit dynamic RAM
JD700M/800M series adopts the column
4116-3

2716

16K (2Kx8) UV erasable PROM

7-2

7.5 DESCRIPTION OF OPERATION
7.5.1 CIRCUIT DIAGRAM

(3) Generation of *IOM, *MEMR, *MEMW, *IOR"
*IOW

1n (CPU CIRCUIT)

(1) Switching of clock rate

LS257
8HH~

- - - - - r -.. . . . r\._.,....---........

>--_----4 Xt

8085A-2

80SSA-2

f-----*I1EHR

X2
1-----

* HEHW

74.00
1-----*lOW

1--+-+-+--+------ 10M

I0!H

1 - 1 - - + - + - - - - - - - ALE

Fig. 7·3
The clock input frequency of 8085A-2 can be switched between 8MHz and 4MHz with the short pin of
J31.
When J31 is shorted: 8MHz clock input
When J31 is open:
4MHz clock input
The NAND gate (7400) connected to terminal X2
of 8085A-2 is for compensation of clock duty cycle
in the interior of 8085A-2.

Fig. 7·5
• Control of 10M
The impedance level of the 10M becomes high by
signal AEM output from DMA controller 8257 at
the occasion of DMA, and control of the memory
and I/O is transferred to the DMA controller.

(2) Clock to peripheral LSls

•

8'085 A

Generation of *MEMR, *MEMW, *IOR, *IOW
*MEMR, *MEMW, *IOR, *IOW are generated
with LS257 by WR, RD 101M of 8085A. At the
occasion of DMA, the impedance level of these
signals becomes high by signal AEN output from the
DMA controller, and switching is made to *MEMR,
*MEMW, *IOR, *IOW output by the DMA controller.
AEN 10M WR RD "MEMA *MEMW1'·IOA .IOW

CLOd< OUT

Fig. 7 ·4
A CPU synchronizing clock of 2MHz is output to
the CPU's peripheral LSls (DMA controller 8257,
programmable communication interface 8251, FDD
controller 8866) regardless of the CPU clock rate.

0
0

0
0

0

1

1

0

1

1

0

0

1

0

1

0

1

1

1

0

1

1

0

1

1

1

X

X

X

Z

Z

1

.MEMW

1

1

.MEMA

1

.IOW

0

0
1

Z

Z

0:

Logic 0

X: No definition

1:

Logic 1

Z: High impedance

.IOA

Tab. 7· 1

In practice, these signals are of high impedance level
with 8085A-2 at the time when signal AEM is output.

7-3

(4) Address line control under CPU control
4EN
A8

I

~"

IA
2A

1'(

AB8

zr

ASq

'A

ABIO

4'1'

M!II

AIZ

==R~A81-1
SA

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A812

Al3

I

cA

6'1'

7A

7Y
€Y

ABf3
A814

A?
AID

All
AI4
AIS

When the mode changes to DMA mode, signal AEN
is output, more significant address A8 - A15 are output to DO - D7 of DMA controller 8257, more
significant addresses are latched to 15373 by the subsequently output ADSTB, and AB8 - AB15 are
output.
Furthermore, less significant addresses are output to
AO - A7 of 8257, and addresses ABO -- AB15
become complete. The address data of the CPU is
kept at high impedance level by signal AEN at this·
occasion as described earlier.

LS244

8A

rc GZ

A815

LS373

ALE.

G
'-.: OC

Af>O
Af>1
A9Z

If)

IQ

ABO

20

2Q

ASI

4M

3Q

AB2

A£>3
A£l4.

4El

4Q

AB3

Sf:)

5Q

A84

A£)5

6&

6Q

Af>6
Af)'T

79
gD

'TQ

ASS
AB6
AB'7

3D
1

8G

(6) Power clear

Fig. 7 - 6

The information of A8 - A15 is output to AB8 AB15 as it is. As address and information is output
out of ADO - AD7, they are latched with signal ALE
and information is output out of AB8 - AB15 as
address information. The impedance level of ABO AB15 becomes high by signal AEN output at the
occasion of DMA.

C71

O.01jl

(5) Address control at the occasion of direct memory
access

A circuit protecting abnormal write to floppy disk
drive in case of power ON, OFF or interruption.

AtlO

DO

8257
I
AO

ABO

MJI

::-1

AI

ASI

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112

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A82

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A£\4.
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A84
AB5

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A6'

f>f)'1

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A"\

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When TR2 base voltage drops from (A) point to O.6V
(VBE) approximately, TR2 turns to active working to
further lower base voltage of TR2. Consequently,
C3 is promtly discharged and (A) point recomes low
level, then comparator output (*PCLN) turns to low
level.

~EHR

+HEHR
*IOR
-4

I

Fig. 7 - 8

(AI POINT

3.5V

~,....
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Fig. 7 - 7

Fig. 7 - 9

7-4

7,5.2 CI RCUIT DIAGRAM

2n

(2) Generation of *RAM, *CAS, *WE to dynamic RAM

(DYNAMIC RAM CONTROL)

(1) Generation of signals to refre~ controller 3242

,H~~R

*HEHIIJ
HlllelC!)

ifeAO:l

il'8ACiQ
;If-MCiC3

51
So

_~r--..

HOLgA - + - - - L - . . . I

----,--~L---'

) - o r - - - - - J?EFRQ

ASlS
1\814.

--+-----------.......;
*WEO
-l4WE /

(DUN,.

ClK

-..:::==t::::t::t;:~-t-------k

"'-IIIE2

*WE3

Fig. 7 - 11
-+ClK

Under CPU control, a *RAS signal is output about
60msec after a *MEMR or *MEMW signal is output,
by the function of the delay circuit constituted by
R14 and C4. A *CAS signal is output about 160msec
later by the function of the delay circuit constituted
by R16 and C5.

)---+---k'OWEH

ALE

AflSTB -+-_ _-+_ _---+_+---.l
HOLDA -+-~=---..., .><>---+--+----------'

c*~~~ - - = - - - - q - ' "'l-INTA

The *CAS signal is decoded with LS139 by address
data signals ABl4 and ABt5, and the ""CAS is output
only to the applicable address of the memory.

Fig. 7 - 10

Dynamic RAM write enable signals *WEO -- 3 are
output at the timing same as that of *MEMW only at
the occasion of memory write.
.

Refresh of the dynamic RAM is made by T4 of
operation code fetch cycle M1 and also by HALT
at occasions other than DMA. ® is detection of
operation code' fetch cycle M1, © is detection of
operation code fetch cycle M1 ,and @ is detection
of HALT at occasions other than DMA. At the
occasion of DMA, refresh of the dynamic RAM is
inhibited by output signals HOLDA and ADSTB.

At the occasion of DMA, *RAS signal is produced by
response output signals *DACKO -- 3 from DMA
controller 8257, and a *CAS signal is output about
160nsec after output of *MEMR or *MEMW. The
dynamic RAM control signals for the above are
shown in the following pages.

CLK

COUNT

_ - - - , , . SOnS DELAY

N.-

:y

'RAS _ _ _
'CAS

160nS

f--

:

DEL~~----"

FETCH

r-- \

----+-

MEM READ
(WRITEI

~------.,.....-/0 READ
(WRITEI

----i

I-REFRESH-j

Fig. 7 - 12

At the occation of CPU, dinamic RAM refresh timing
7-5

ClK

ALE

------------______________~tL_

HOlDR~
'DACK 0 - 3

AEN

Fig. 7· 13

At the occation of DMA, dinamic RAM refresh timing

The flip-flop circuit of LS 107 constitutes a trisection frequency dividing circuit against clock input
TIMERP. As clock input TIMERP is of the frequency of 1.2kHz, the flip-flop output becomes 400Hz,
and output QB of binary counter LS393 becomes
100Hz (IO msec) and output QC becomes 50Hz
(20 msec). The method of control of interrupt
request *RST6.5RQ by the timer output is same as
that of serial communication sent interrupt control
described earlier.

(3) Send interrupt control of serial communication
interface 8251

-+ i---

V SYNC

Fig. 7 - 23

• It generates character clock. It is set at binary
counter, i.e. 1 character 10 dots.
• Time chart is shown on the next page.

Fig. 7 - 24

748163 (l6C) operation

13

11

14

15

6

7

8

9

10

11

15.9744MHz

Cy~~~~~~:~~
SN74S163
(16C)

ac
[

aD

:

----,L..__---'
Fig. 7 - 25

7

10

11

12

13

S163-0D

8275
HRTC _ _ _

~

r~L-:_ _ _~

LS161(17DI

aD - - - - - - - - - '

H SYNC OUT

Fig 7 - 26

u

u

u

Horizontal Sync.Timirl9

u

u

u

u

--~--~--~----~--~--~--~~(~L

8275 _ _ _ _......
VRTC
LS74(16DI

Q --------

LS74(15DI - - - - - - - - - - - - ;

Q

~------..........

VSYNCOUT _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Fig. 7 - 27
7-9

~

Vartical Sync. Timing

6

S163-00

(3) Attribute Data Latch

I

8275

CK
FlGT
lTEN

10

1Q

20

20

VSP

30

RVV

40

30

40
Cl

40

~

';.

+5V

Fig. 7 - 28

• Attribute code is latched by 1 character clock delay.

• Timing chart is shown below. (Fig. 7 - 30, 7 - 31)

(4) Displayed data latch
15.9744
MHz

11

8257
CCO
CC1

AO
A1

CC2
CC3
CC4
CC5

A2
A3
A4
A5
A6

CC6
LCO
lC1
LC2
lC3

S163-00

DO

A CK

01

B

02

C

MCM

03

0

66740
66760
66770
66780

04

E

RSO
05
RS1
06
RS2
RS3 ISL2716K)

G

S/l

°H

~.-

ClK
INH

nr

74165

F

~H
SIN

b
Fig. 7 - 29

• Displayed data is latched at 74165 by 1 character
clock delay.

• Timing chart is shown below. (Fig. 7 - 30, 7 - 31)

Timing chart of attribute data
S163-QC
(16C-12)
8275

CHARACTER CLOCK
5163-00
(16C·11)
lS175-ClOCK
ATTRIBUTE DATA
(140 OUTPUT)

x

x
DATA 1

ATTRIBUTE OUTPUT
1140 OUTPUT)

DATA 2

DATA 3

_ _ _ _.JX~______________'x~
DATA 1

Fig. 7 - 30

____
DATA 2

Timing chart of attribute data

Timing chart of display data latch
DOT CLOCK
15.9744 MHz
S163-Q O
116C-11)

8275-CCO-CC6

MCM66740
OUTPUT
74165 LATCH TIIMING

Fig.7-31

7 - 10

Timing chart of display data latch

(5) Generation of video signal

15.9744
MHz----~--------~~--~ ~~----~ ~D---------------~
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17w
X

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o0

18

I~*.

(D2

~l. •t

u

DVlI

1DI
P9

II 75154 I . II 74LSI61

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1,..- ____ ~!.I_I- - - - I

SD3o

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5

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it
C. 137

DTl2

lr - - - - - - - - - - - - - -,13
I

14L. - - - - - - - - - - - - -

lr - - I

~s

-~'!~ -- - - - - ,13
I

14L. - - - - - - - - - - - - - ..... 25

9.02
___

131 - - -

SBCYl 2742-2 MOS

I
."
(")

o

-f

II' - - -

<
w
Ol

aI

20M

(51
U

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....-:::-;:-:-)
~__________'_2_S_7____~ .D12
~ "~'u~Tl. 1~
18tt' 1(4116 lott· 1(4".
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:::DU
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r --.

9

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tI ...."a 15*~' ..... l13*t' ..... l5*t' ..... Ii!*t' ..... !* ' ..,,0.1
""'0 1 ~. ~ ,.no·1 5* tI '"''''
QS t!74LS02 I at 74UO. I
S*lt· UI1. 1 15*t'' --1(-4-11-.--'19*t· U"6 Ig*t"'-,-I(-"-"-.~~ * === ::: ~ I~
121
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~
t!74LS1071 St II 74,53,31 ~ 74U05 I e*~' UI16 ~~:;:t· UI16 Ig*t· U116 I~*t· 1(4116 I~ * • 74UU' I

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162

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e 22

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--tl.--,.
(20

if ~ 5t II 74UOO I

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6

5

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4 •

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10 1('

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---.-f

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IC

~.1

tiT 18

SBCV3 (1/10)

7.6.3 SBCV3PARTS LIST

L OC.

-

PART

NO.

PART NAME

2A
4A

M54552P
M74LS368P

LSI
IC

8A

M7.4LS74P

"

9A

SN7SIS0P

"

lOA
llA

SN7S1S0P
SN7S1S0P

"

12A

SN7S1S0P

"

13A
14A

SN7SIS0P

"

M7~LS161P

"

lSA
4B

M74LS04P

SN7407N

"
"

SB
8B

M14LS02P
M74LSOOP

"
"

9B

M74LSI07P

"

lIB

SN7SIS4N

"

12B
13B
15B
16B

SN7S154N
SN7S1S4N
M74LS393P
DV18

2C
4C

M74LS04P
M74LSOOP

5C
6C

M74LS08P
M74LS74P

7C
9C

M74LS74P
M74LS393P

"
"
"

llC

MPD8251C

LSI

I2C13C
lSC

MPD825IC
MPD8251C
M74LS161P

"
"

16C

SN74S163N

I7C

SN751S4N

2D
4D-

&

DESCRIPTION

RE-MARKS

"

"
-"
"

"
"
"
"

IC

"
"

SN74LSI38N
SN74LSI38N

"

6D
9D
14D
lSD

M74LSI39P
M74LSOSP
M74LS17SP
M74LS74P

"
"
"
"

16D

M74LS74P

"

17D

M74LS161P

"

2E

M5K4116P-3

LSI

I

"

I

I
I
Option for 64KB
7·21

SBCV3 (2/10)

.L 0 C.

NO.

PART NAME

&

DESCRIPTION

REMARKS

3E

M5K4116P-3

LSI

Option for 64KB

4E
5E

M5K4116P-3
M5K4116P-3

"
"

"

6E
7E

M5K4116P-3
M5K4116P-3

II

8E

M5.K4116P-3

9E

M5K4116P-3
D3242
SN74165N

IC

15E

SN74125N

16E
17E

M74LS08P
SN7407N

"
"

4F

M5K4116P-3
:M5K4116P-'3
M5K4116P-3

5F

M5K4116P-3

6F

I M5K4116P-3

7F

M5K4116P-3

8F
9F
15F

M5K4116P-3
M5K4116P-3
SN74S74N

16F

M74LS04P

"
"

"

"
LSI

"
"

"
If

"
"
"
IC

"

2G

M5K4116P-3

LSI

3G

"
"

5G

M5K4116P-3
M5K4116P-3
M5K4116P-3

6G

M5K4116P-3

7G .

M5K4116P-3

8G

M5K4116P-3

9G

M5K4116P-3

"
"
"
"
"

12G

M5L2716K2

LSI

12G
12G
12G

M5L2716K102
M5L2716K42
M5L2716K142

"

13G

P8275

"

14G
14G

MCM66740L
MCM66760P

14G

MCM66770P

14G

MCM66780P

"
"
"
"

15G

M74LS32P

IC

4G

"
"
"

"
"
"

12E
14E

2F
3F

..

PART

for JD700M

I for

JD740M
for JD800M
for JD840M

"

"

ASCII
British
German

I French
7 - 22
.........

SBCV3 (3/10)

oe.

L

NO.

M5K4116P-3

LSI

M5K4116P-3
M5K4116P-3

"

5H
6H

M5K4116P-3
M5K4116P-3

"
"

7H
8H

M5K4116P-3
M5K4116P-3
M5K4116P-3

"

2J
3J
4J
6J
7J
8J

REMARKS

PART NAME & DESCRIPTION

2H
3H
4H

9H
1J
-

PART

-

I

"

"

"

M74LS74P

Ie

M74LS02P
M74LS05P
M74LS04P
M74LS08P

"

"
"

"

I M74LSOOP'

"

M74LSOOP

"

9J

I M74LS139P

12J
13J
14J

M5L8226P
MB8866C
M74LS32P

15J
16J
18J
lK

M74LS74P
SN7438N
M74LSOOP
M74LS107P

2K
4K

M74LS32P
M74LS1OP

"
"

6K

M74LS04P

8K

M74LS74P

"
"

9K

M74LS02P

"

12K
14K

M5L8226P
M74LSOBP

LSI
Ie

15K
16K

M74LSOBP

"

SN7438N

18K

SN7438N

"
"

2L
4L

M5L8257P
M74LS04P

LSI
Ie

6L

M74LS20P

BL

SN7400N

"
"

10L
12L

P80B5A-2

SN74367AN

LSI
Ie

13L

M74LS04P

"

"
LsI
"
Ie
for JD740M/JD840M

"

"
for JD740M/JD840M

"
"

I
for JD740M/JDB40M

7·23

SBCV3 (4/10)·.

L OC.

PART

PART NAME & DESCRIPTION

NO.

14L

M74LS32P

15L
loL

M74LS259P
M74LS74P

"

18L

M74LS157P

"

4M

M74LS373P

"

bM

M74LS373P

"

8M

M74LS244P

12M
13M

SN74367AN
M74LS51P

"
"

14M
15M-

REMARKS

IC

"

for JD740M/JD840M
for JD740M/JD840M

"

for JD740M/JD840M

M74LS74P
M74LS04P

"
"

for JD740M/JD840M

16M

M74LS32P

~7M

M74LS193P

"
"

8N
12N

M51202L
M74I...S257P

13N

for JD740M/JD840M

M74LS04P

"
"
"

for JD740M/JD840M-

14N

M74LS74P

."

for JD7 40M/ JD840M .

15N

M74LS74P

"

16N
17N
18N

FC-9602PC
M74LS74P
FC-9602PC

"
"

Rl
R2 _

ERD25TJ472

Carbon

ERD25TJ221

"

220Q

1/4W

R3

ERD25TJ563

"

56kQ

1/4W

R4

ERD25TJ561
ERD25TJ563

"
"

560Q
56kQ

1/4W

R6
R7

ERD25TJ223

22kQ

R8

ERD25TJ561

"
"
"

560Q

R9
RIO

ERD25TJ474
ERD25TJ471

"
"

470kQ 1/4W
47Q
1/4W

RII
R12

ERD25TJ471
ERD25TJl22

47Q
1/4W
1.2kQ 1/4W

R13

ERD25TJ222

"
"
"

Rl4

ERD25TJ151

"

150Q

1/4W

R15

ERD25TJ221

"

220Q

1/4W

Rl6

ERD25TJ222

R17

ERD25TJl22

"
"

2.2kQ 1/4W
1.2kQ 1/4W

R5

"

ERD25TJl22

I

4.7kQ 1/4W

1/4W

1/4W
1.2kQ 1/4W
1/4W

I

2.2kQ 1/4W

7 - 24

I

SBCV3 (5/10)

-

REMARKS

DESCRIPTION

PART

Rl8

ERD25TJl22

Carbon

R19

ERD2STJ122

1.2kQ 1/4W -

R20

ERD2STJ122

"
"

R21
R22
R23
R24

ERD2STJl22
ERD2STJ122
ERD2STJ122
ERD2STJ122

"

"

1.2kQ
1.2kQ
1.2kQ
1.2kQ

R2S

ERD2STJ122

"

1.2kQ 1/4W

R26
R27

ERD2STJ122
ERD2STJI03

"

1.2kQ 1/4W
lOkQ 1/4W

R28
R29
R30

ERD2STJ103
ERD2STJ472

"
"

ERD2STJI03

"

R31

ERD2STJlS1.

R32

ERD2STJ1S1

"
"
"
"
"

R33
R34

NO.

PART NAME &

L OC.

I ERD2STJ1S1
ERD2STJ183

1.2kQ 1/4W
1.2kQ 1/4W

"

"

"

1/4W
1/4W
1/4W
1/4W

lOkQ 1/4W
4.7kQ 1/4W
lOkQ 1/4W
lSOQ

1/4W

lSOQ

1/4W

IS0Q

1/4W

18kQ

1/4W

39kQ
33kQ

1/4W
1/4W

27kQ
27kQ

1/4W
1/4W
1/4W

R3S
R36

ERD2STJ393
ERD25TJ333

R37
R38

ERD2STJ273
ERD2STJ273

"

R39

ERD2STJlS1

II

lSOQ

R40
R41
R42

ERD2STJ122
ERD2STJI03
ERD2STJ472

"

1.2kQ 1/4W
lOkQ 1/4W
4.7kQ 1/4W

R43
R44

ERD2STJ821
ERD2STJ271

820Q
270Q

1/4W
1/4W

R4S

ERD2STJIOO

"
"
"

lOOQ

1/4W

R46

ERD2STJ181

180Q

1/4W

R47
R48

ERD2STJ391
ERD2STJ122

"
"
"

390Q 1/4W
1.2kQ 1/4W

R49

ERD2STJ682

"

6.8kQ 1/4W

RSO

ERD2STJ682

"

6.8kQ 1/4W

RSI
RS2

ERD2STJ682
ERD2STJ220

"
"

6.8kQ 1/4W
22Q
1/4W

R53

ERD2STJ220

22Q

1/4W

R54

ERD25TJ220

22Q

1/4W

RS5
RS6

ERD2STJ220
ERD25TJ220

"
"
"
"

22Q
22Q

1/4W
1/4W

R57

ERD2STJ220

"

22Q

1/4W

tI

II

"
"

7·25

I

.

I

-

SBCV3 (6/10)

.L 0 C.

PART

R58

ERD25TJ220

Carbon

22Q

1/4W

R59
R60

ERD25TJ471
ERD25TJ331

"
"

470Q

1/4W -

330Q

1/4W

R61

ERD25TJ222

"

R62

ERD25TJ472

R63

ERD25TJ393

"
"

2.2kQ 1/4W
4.7kQ 1/4W

R64
R65

ERD25TJ561
ERD25TJ472

"
"

560Q 1/4W
4.7kQ 1/4W

R66

ERD25TJ221

"

220Q

Cl

ECKDIHI03 ZFZ

Ceramic

O.Ol~F

25V

C2

ECEBICS220

Electrolytic

22~F

16V

C3
C4

825001410'

Ceramic

O.l~F

12V

ECKDIH471MB

C5
C6

ECKD2HI02KB
EGEBICSIOO

Electrolytic

10~F

16V

C7

ECSZIOVH220·

Tantalum

220~F

lOY

C8

ECSZIOVHIOO

100~F

lOY

C9
CIO
Cll
C12

ECCDIH220KC
825001410
825001410
ECEBICSIOO

Ceramic
Ceramic
Electrolytic

10~F

C14

ECKD2HI02KB

Ceramic

1,000PF

C15

ECKD2HI02KB

"

1,OOOPF

C16

825001410

"

O.l~F

12V DD600-BCI04M12V

C17

ECEBICS330

Electrolytic

33~F

16V

C18

ECQMIH153KZ

Ceramic

0.015~F

C19
C20

ECEBICSIOO
ECEBICSIOO

Electrolytic

10~F

C21

ECEBIHS4R7

C22
C23

ECEBIHS4R7
ECEBIHS4R7

C24

ECEBIHS4R7

C25
C26

NO.

PART NAME & DESCRIPTION

39kQ

REMARKS

1/4W

1/4W

-

."

DD600-BCI04M12V

470PF
l',OOOPF

"

"

"

I

22PF
O.l~F
O.l~F

"

12V DD600-BCI04M12V
12V
"
16V

"

10~F

16V
16V

"
"

4.7~F

50V

4.7~F

50V

"
"

4.7~F

50V

4.7~

50V

ECEBIHS4R7
ECEBIHS4R7

"

4.7~F

"

4.7~F

50V
50V

C27

ECEBICSIOO

"

10~F

16V

C28

ECEBICSIOO

"

10~F

16V

C29

ECEBICSIOO

"

10~F

16V

C30

ECEBICSIOO

"

lO~F

16V

7 - 26

I

SBCV3 (7/10)

PART NAME &

L OC.

PART

C31

ECEB1CS100

Electro 1ytic

C32

ECEB1CS100

C33

ECEB1CS100

C34

ECEB1CS100

C35
C36

829918063
829918063

C37

NO.

REMARKS

DESCRIPTION
10~F

16V

"

10~F

16V -

"
"

10~F

16V

10~F

16V

O.l~F

"

O.lf.l.F

50V
50V

829918063

"

O.lf.l.F

50V

C38

829918063

"

O.l~F

50V

C39
C40

829918063

"

O.l~F

50V

"
"

829918063

O.l~F

50V

"

C41

-829918063

"
"

O.l~F

50V

"

C42

829918063

"

O.l~F

50V

943
C44

829918063
829918063'

"
"

O.lf.l.F
O.lf.l.F

50V
50V

"
"
"

C45

829918063

"

O.l~F

50V

C46

I 829918063

n.1~F

50V

C47

829918063

"
"

"
"

O.l~F

50V

"

C48
C49

829918063

O.lf.l.F

50V

829918063

O.lf.l.F

50V

C50

829918063

"
"
"

O.l~F

50V

C51

829918063

"

O.l~F

50V
50V

"
"
"

Ceramic

RPEl12Fl04Z50V

"
"

I

"
"

I

C52

829918063

"

O.l~F

C53

825001410

"

O.l~F

12V

DD600-BC104M12V

C54

825001410

"

O.lf.l.F

12V

"

C55
C56

825001410
825001410

"

O.lf.l.F
O.lf.l.F

12V
12V

"
"

C57

825001410

O.lf.l.F

12V

"

C58

825001410

O.lf.l.F

12V

"

C59

825001410

O.lf.l.F

12V

"

C60

825001410

"
"
"
"

O.lf.l.F

12V

C61

825001410

"

0 .. 1 f.l.F

12V

C62

825001410

"

0.1f.l.F

12V

"
"
"

C63

825001410

"

O.lf.l.F

12V

"

C64

825001410 .

"

O.lf.l.F

12V

"

C65

825001410

"

O.lf.l.F

12V

"

C66
C67

825001410
825001410

"
"

0.1f.l.F
0.1f.l.F

12V
12V

C68

.825001410

"

0.1f.l.F

12V

C69

829918063

"

O.l~F

C70

829918063

'I

O.l~F

50V I RPEl12Fl04Z50V
50V
"

"

I

I

7 - 27

I

I
I

"
"
"

SBCV3 (8/10)

REMARKS

DESCRIPTION

-L 0 C.

PART

C71

829918063

Ceramic'

O.l~F

C72

825001410

O.l~F

C73

825001410

"
"

C74

825001410

"

O.l~F

12V
12V

C75

825001410

"

O.l~F

12V

C76

825001410

"

O.l~F

12V

C77

825001410

"

O.l~F

12V

C79
C80
C81

825001410

O.l~F

825001410
825001410

O.l~F

12V
12V
12V

C8}

825001410

"
"
"
"

O.l~F

12V

C84

825001410

O.l~F

12V

C85
,

825001410

O.l~F

C86

825001410

"
"
"

12V
12V

C88
C89

825001410
825001410

"
"

O.l~F

O.l~F

12V
12V

C90
C91

825001410

"
"

O.l~F

12V

O.l~F

12V

,.

C93

825001410

O.l~F

12V

"

C94

825001410

O.l~F

12V

C95
C97

825001410
825001410

"
"
"

O.l~F

"

O.l~F

12V
12V

"
"

C98

825001410

12V

C99

825001410

"
"

O.l~F
O.l~F

12V

CI01

825001410

"

O.l~F

12V

"
"

CI04

825001410

"

0.1~

12V

"

CI05

825001410

12V

C106

825001410

"
"

O.l~F
O.l~F

12V

"
"

C107

ECKD1H681KB2

"

680PF

C108

ECKD1H471MB

470PF

CI09

825001410

"
"

O.l~F

12V

DD600-BC104M12V

ClIO

825001410

O.l~F

12V

Cl11

825001410

O.l~F

12V

Cl14
C116

825001410 825001410

"
"
"

O.l~F

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SBCV4 (1/10)

7.6.6 SBCV4 PARTS LIST

LOC.

10A

M5L2716K142

LSI

12A

M74LS368P

IC

13A

M74LSOOP

IC

14A

MPD8251C

LSI

15 A

MPD8251C

LSI

16A

MPD8251C

LSI

17 A

I SN75154N

IC

12B

SN7407N

IC

13B

M74LS08P

Ie

17B

SN75150P

IC

6C

M74LS161P

IC

8C

M74LS161P

IC

9C

M74LS74P

IC

10C

M74LSI07P

IC

11 C

M74LS74P

IC

12C

M74LS74P

IC

13C

M74LS393P

IC

16C

M74LS32P

IC

17C

SN75150P

IC

SN75150P

IC

2D

M5L8257P-5

IC

4D

M74LS04P

IC

6D

M74LS257P

IC

80

SN74367AN

IC

P8085A-2

IC

18C

100
11 D

M74LSOOP

IC

12D

M74LS02P

IC

13D

M74LS04P

IC

14D

M74LSOOP

I-C

15 D

M74LS05P

IC

160

SN75154N

IC

170

SN75154N

IC

4E

M74LS373P

IC

6E

M74LS373P

IC

8E

M 74LS244P

IC

11 E

SN74367AN

IPL

!

DMAC
I

CPU

IC
I

12E

M74LSI07P

13 E

M74LS10P

IC

14E

M74LS32P

IC

15 E

M74LS02P

IC

16E

SN75150P

IC

17E

IC

SN75150P

IC

IF

SN74S163N

IC

2F

M74LS74P

IC

4F

M74LS74P

IC

6F

M74LS20P
M74LS138P

IC
IC

8F

REMARKS

PART NAME & DESCRIPTION

PART NO.

i

7 -40

SBCV4 (2/10)

LaC.

M74LS138P

Ie

11F

M51202L

Ie

13 F

M74LS32P

Ie

15F

M74LS74P

Ie

9F

SN75154N

Ie

1G

DV 18

Ie

4G

SN74165N

Ie

6G

M74LS161P

Ie

8G

M74LS04P

IC

9G

M74LS139P

IC

M74LS08P

Ie

11 G

M74LS32P

Ie

12G

M74LS04P

Ie

13G

SN74S74N

IC

14G

M74LS08P

Ie

15G

16F

lOG

REMARKS

PART NAME & DESCRIPTION

PART NO.

SN7407N

Ie

2H

P8275

LSI

4H

M5L2716KA

LSI

ose

CRTC

-

C'G

ASCII

M5L2716KE

LSI

C'G British

M5L2716KD

LSI

e'G Germ an

M5L2716KF

LSI

e'G French

6H

M74LS393P

IC

8H

MC3242AP

LSI

9H

M74LS175P

Ie

M74LS02P

Ie

10H
11 H

M74LSOOP

Ie

12H

M74LS08P

Ie

13H

M74LS74P

IC

14H

SN74125N

IC

15H

M74LS32P

IC

16H

M74LS14P

IC

61

M74LS175P

Ie

91

M74LSOOP

Ie

101

M74LS04P

Ie

111

M74LS74P

IC

12J

M74LS08P

IC

13J

M74LS157P

IC

14J

M74LS04P

Ie

151

M74LSOOP

Ie

161

M53238P

Ie

1K

M5K4116P-3

LSI

DRAM

2K

M5K4116P-3

LSI

DRAM

3K

M5K4116P-3

LSI

DRAM

4K
5K

M5K4116P-3
M5K4116P-3

LSI
LSI

6K
7K

MSK4116P-3
M5K4116P-3

LSI

DRAM

LSI

DRAM

I

I

I

7 - 41

DRAM
DRAM

SBCV4 (3/10)

L 0 C.

PART NAME & DESCRIPTION

PART NO.

8K

M5K4116P-3

LSI

9K

M74LS04P

IC

11 K

MB8876C

LS I

12K

M74LS32P

IC

13 K

M74LS74P

IC

14K

M74LSOOP

IC

15K

M74LS08P

IC

16 K

REMARKS

FDC

M53238P

IC

1L

M5K4116P-3

LSI

DRAM

2L

MSK4116P-3

LSI

DRAM

3L

MSK4116P-3

LSI

DRAM

4L

MSK4116P-3

LSI

DRAM

5L

M5K4116P-3

LSI

DRAM

6L

MSK4116P-3

LSI

DRAM

7L

M5K4116P-3

LSI

DRAM

8L

DRAM

M5K4116P-3

LSI

12L

M74LS32P

IC

14L

MS3238P

IC

15 L

M5L8212P

LSI

16 L

M74LS04P

IC

1M

M5K4116P-3

LSI

2M

M 5 K 4116P-3

LSI

DRAM

3M

M5K4116P-3

LSI

DRAM

4M

M5K4116P-3

LSI

DRAM

DRAM

5M

M5K4116P-3

LSI

DRAM

6M

M5K4116P-3

LS I

DRAM

7M

M5K4116P-3

LSI

DRAM

8M

M 5 K 4116P-3

LS I

DRAM

9M

M74LS51P

IC

10M

M5L8226P

LSI

11 M

M5L8226P

LSI

12M

M74LS74P

IC

13M

M74LS04P

IC

14M

FC-9602PC

IC

15M

M74LS74P

IC

16M

M74LS32P

IC

M74LS244P

IC

MSK4116P-3

LSI

DRAM

17M

DRAM

~

IN
2N

M5K4116P-3

LSI

DRAM

3N

M5K4116P-3

LSI

DRAM

4N

M5K4116P-3

LSI

DRAM

5N

M5K4116P-3

LSI

DRAM

6N

M 5K 4116 P-3

LSI

DRAM

7N

M 5 K 4116P-3

LSI

DRAM

8N

M5K4116P-3

LSI

DRAM

9N

M74LS74P

IC

ION

M74LS04P

IC

11 N

M74LS74P

IC

12N

M74LS74P

Ie
7 - 42

SBCV4 (4/10)

LOC.

REMARKS

PART NAME & DESCRIPTION

PART NO.

13N

M74LS193P

IC

14N

FC-9602PC

IC

16N

M74LS04P

IC

17N

M74LS259P

IC

18N

SN74LS245N

IC

R2

ERD25TJ221

Carbon

200n

1/4W

R3

ERD25TJ563

Carbon

56Kn

1/4W
1/4W

R4

ERD25TJ561

Carbon

560n

R5

ERD25TJ563

Carbon

56Kn

1/4W
1/4W

R6

ERD25TJ223

Carbon

22Kn

R7

ERD25TJ122

Carbon

1.2Kn

1/4W

ERD25TJ561

Carbon

560n

1/4 W

R8
R9

ERD25TJ474

Carbon

470Kn

1/4 W

RIO

ERD25TJ471

Carbon

470n

1/4W

R 11

ERD25TJ471

Carbon

470n

1/4W
1/4 W

R 12

ERD25TJ122

Carb on

1.2Kn

R 13

ERD25TJ222

Carbon

2.2Kn

1/4W

R14

ERD25TJ151

Carbon

150n

1/4 W

R 15

ERD25TJ221

Carbon

220n

1/4W

R 16

ERD25TJ222

Carbon

2.2Kn

1/4W

R 17

ERD25TJ122

Carbon

1.2Kn

1/4 W

R18

ERD25TJ122

Carbon

1.2Kn

1/4W

R 19

ERD25TJ122

Carbon

1.2Kn

1/4W

R20

ERD25TJ122

Carbon

1.2Kn

1/,4W

R 21

ERD25TJ122

Carbon

1.2Kn

1/4W

R 22

ERD25TJ122

Carbon

1.2Kn

1/4W

R23

ERD25TJ122

Carbon

1.2Kn

1/4 W

R24

ERD25TJ122

Carbon

1.2Kn

1/4 W

R25

ERD25TJ122

Carbon

1.2Kn

1/4W

R 26

ERD25TJ122

Carbon

1.2Kn

1/4W

R 27

ERD25TJ103

Carbon

10Kn

1/4W

R 28

ERD25TJ103

C arb a n

10Kn

1/4W

R29

ERD25TJ472

Carb on

47Kn

1/4W

R30

ERD25TJ103

Carbon

10Kn

1/4 W

R 31

ERD25TJ152 '

Carbon

15 on

1/4W

R32

ERD25TJ152

Carbon

150n

1/4W

R 33

ERD25TJ151

Carbon

15 on

1/4W

R34

ERD25TJ183

Carbon

18Kn

1/4 W

R35

ERD25TJ393

Carbon

39Kn

1/4W

R36

ERD25TJ333

Carbon

33Kn

1/4 W

R 37

ERD25TJ273

Carbon

27Kn

1/4W

R38

ERD25TJ273

Carbon

27Kn

1/4W

R39

ERD25TJ151

Carbon

150n

1/4W

R40

ERD25TJ122

Carbon

1.2Kn

1/4 W

R41

ERD25TJI03

Carbon

10Kn

1/4W

R42

ERD25TJ472

Carbon

4.7Kn

1/4W

7 -43

I

I

SBCV4 (5/10)

PART NO.

LOC.

PART NAME & DESCRIPTION

R45

ERD25TJI00

C arb on

R46

ERD25TJ181

R47

ERD25TJ391

R48

ERD25TJ122

R49

ERD25TJ682

R50

ERD25TJ682

R51

REMARKS

IOn

1/4W

Carbon

180n

1/4 W

Carbon

390n

1/4 W

Carbon

12Kn

1/4W

Carbon

6.8Kn

1/4W

Carbon

6.8K11

1/4 W

ERD25TJ682

Carbon

6.8Kn

1/4W

R52

ERD25TJ220

Carbon

2211

1/4 W

R53

ERD25TJ220

Carbon

22n

1/4W

R54

ERD25TJ220

Carbon

22n

1/4 W

R55

ERD25TJ220

Carbon

22n

1/4W

R56

ERD25TJ220

Carbon

22n

1/4 W

R57

ERD25TJ220

Carbon

22n

1/4W

R58

ERD25TJ220

Carbon

2211

1/4W

R59

ERD25TJ471

Carbon

470n

1/4 W

R60

ERD25TJ331

Carbon

330n

1/4W

R61

ERD25TJ222

Carbon

2.2K11

1/4W

R62

ERD25TJ472

Carbon

4.7Kn

1/4 W

R63

ERD25TJ393

Carbon

39Kn

1/4 W

R64

ERD25TJ561

Carbon

560n

1/4 W

4.7Kn

1/4W

I

R65

ERD25TJ472

Carbon

R69

ERD25TJ221

Carbon

220n

1/4W

R70

ERD25TJ472

Carbon

4.7Kn

1/4 W

R71

ERD25TJ332

Carbon

3.3K

1/4 W
1/4 W

..

R 72

ERD25TJ332

Carbon

3.3K

R 73

ERD25TJ332

Carbon

3.3K

R74

ERD25TJ221

Carbon

C1

ECK D1H103ZFZ

Ceram ic

C2

1/4W

220n

1/4 W

O.Ol,uF

25V

22,uF

16V

O.l/olF

12V

ECEB1CS220

Electrolytic

C3

825001410

Ceram ic

C4

ECK D1H471MB

Ceram ic

470PF

C5

ECK D 2H 102KB

Ceram ic

1000PF

C6

ECEB1CS100

Electrolytic

C7

ECSZ10VH220

C8

ECSZ10VH100

CI0

825001410

C14

ECK

C1S

10/olF

16V

Tantalum

220#-'F

10V

Tan talum

100/olF

10V

Ceram ic

O.I,uF

12V

D2HI0~KB

Ceramic

1000PF

ECK D2H102KB

Caramic

1000PF
7 -44

DD600-BCI04MI2V

DD600-BCI04MI2V

SBCV4 (6/10)

LOC.

REMARKS

PART NAME & DESCRIPTION

PART NO.

O.l",F

12V

33",F

16V

825001410

Ceramic

C17

BCEB1CS330

Electrolytic

C18

ECQM1H153KZ

Myler

C19

ECEB1CS100

E Ie c tr 0 ly tic

10",F

16V

C20

ECEB1CS100

Electrolytic

10",F

16V

C21

ECEB1HS4R7

Electrolytic

4.7 ",F

SOV

C22

ECEB1HS4R7

Electrolytic

4.7 ",F

SOV

C23

ECEB1HS4R7

Electrolytic

4.7 ",F

SOV

C24

ECEB1HS4R7

Electrolytic

4.7 ",F

SOV

C25

ECEBIHS4R7

Electrolytic

4.7 ",F

50V

C26

ECEBIHS4R7

E Ie c tro ly tic

4.7 ",F

SOV

C27

ECEB1CS100

Electrolytic

10",F

16V

C28

ECEB1CS100

Electrolytic

10",F

16V

C29

ECEB1CS100

Electrolytic

10J,&F

16V

C30

ECEB1CS100

Electrolytic

10",F

16V

C 31

ECEB1CS100

Electrolytic

10",F

16V

C32

ECEB1CS100

Electrolytic

10",F

16V

C16

DD600-BC104M12V

0.015",F

C33

ECEB1CS100

Electrolytic

10",F

16V

C34

ECEB1CS100

Electrolytic

10",F

16V

C3S

829918063

Ceram ic

O.l,uF

SOV

C36

829918063

C eram ic

0.1 ",F

SOV

..

C37

829918063

Ceram ic

0.1 ",F

SOV

"

C38

829918063

Ceramic

0.1 ",F

SOV

C39

829918063

Ceram ic

O.l",F

SOV

C40

829918063

Ceram ic

0.1 ",F

SOV

C41

329918063

Ceramic

O.l",F

SOV

C42

829918063

I Ceram ic

0.1 ",F

SOV

C43

829918063

Ceramic

0.1 ",F

SOV

C44

829918063

Ceram ic

0.1 ",F

SOV

..

C4S

829918063

Ceram ic

O.l",F

SOV

"

C46

829918063

Ceramic

O.l",F

SOV

C47

829918063

Ceramic

O.l",F

SOV

C48

829918063

Ceram ic

O.l",F

50V

C49

829918063

Ceram ic

0.1 ",F

SOV

CSO

829918063

Ceram ic

0.1 ",F

SOV

CS2

829918063

Ceram ic

0.1 ",F

SOV

PRE112F 1 04ZS0V

CS 3

825001410

Ceram ic

0.1 ",F

12V

DD600-DC1 04M 12V

CS4

825001410

Ceram ic

O.l",F

12V

"

CSS

825001410

Ceram ic

O.l",F

12V

"

CS6

825001410

C eram ic

O.l",F

12V

CS7

825001410

Ceram ic

0.1 ",F

12V

CS8

825001410

Ceram ic

0.1 ",F

12V

PRE112F104ZS0V

..

..

..
..
..
"

..

..
..

..
..

..

..

..
..

CS9

825001410

Ceram ic

0.1 ",F

12V

C60

825001410

Ceramic

0.1 ",F

12V

..

C61

825001410

Ceram ic

0.1 ",F

12V

"

C62

825001410

Ceramic

0.1 ",F

12V

C63

825001410

Ceramic

0.1 ",F

12V

..

C64

825001410

Ceramic

0.1 ",F

12V

"

7-45

"

SBCV4 (7/10)

LOC.

PART NO.

PART NAME & DESCRIPTION

REMARKS

C'

825001410

Ceram ic

O.l~F

12V

C66

825001410

Ceram ic

O.l~F

12V

"

C67

825001410

C eram ic

O.l~F

12V

"

C68

8250014140

Ceram ic

0.1~F

12V

"

DD600-BC104M12V

C69

829918063

Ceram ic

0.1 ~F

50V

C70

829918063

Ceram ic

O.l~F

50V

C71

829918063

Ceram ic

0.1~F

50V

C72

825001410

Ceram ic

O.l~F

12V

C73

825001410

C eram ic

O.l~F

12V

C74

825001410

C eram ic

0.1 ~F

12V

"

C75

825001410

Ceramic

O.l~F

12V

"

RPEl12F104Z50V
"
"

DD600-BC 104M 12V
"

C76

825001410

Ceram ic

O.l~F

12V

"

C77

825001410

Ceram ic

O.l~F

12V

"

C78

825001410

Ceram ic

O.l~F

12V

"

C79

825001410

Ceram ic

0.1~F

12V

"

C80

825001410

Ceram ic

0.1~F

12V

"

C81

825001410

Ceram ic

O.l~F

12V

"

C82

825001410

Ceram ic

0.1 ~F

12V

"

C83

825001410

C eram ic

0.1 ~F

12V

"

C84

825001410

Ceram ic

O.l~F

12V

"

C85

825001410

G eram ic

O.l~F

12V

"

C86

825001410

Ceramic

0.1 ~F

12V

"

C87.

825001410

Ceram ic

0.1~F

12V

"

C88

825001410

Ceram ic

0.1 ~F

12V

..

C89

825001410

Ceram ic

O.l~F

12V

"

C90

825001410

C eram ic

0.1 ~F

12V

"

C91

825001410

Ceramic

O.l~F

12V

"

C92

825001410

Ceram ic

0.1 ~F

12V

"

C93

825001410

Ceram ic

O.l~F

12V

"

C94

825001410

Ceram ic

O.l~F

12V

"

C95

825001410

Ceram ic

o .1~F

12V

"

C96

825001410

Ceram ic

O.l~F

12V

"

C97

825001410

Ceram ic

O.l~F

12V

"

C98
C99

825001410
825001410

Ceram ic
Ceramic

O.l~F

"

O.l~F

12V
12V

C100

825001410

Ceramic

O.l~F

12V

"

C101

825001410

Ceramic

O.l~F

12V

"

C102

825001410

Ceram ic

O.l~F

12V

"

C103

825001410

Ceram ic

O.l~F

12V

"

C 104

825001410

Ceram ic

O.l~F

12V

"

C105

825001410

Ceram ic

O.l~F

12V

"

C 1 06

825001410

Ceram ic

0.1 ~F

12V

"

Cl07

825001410

Ceram ic

O.I~F

12V

"

C108

825001410

Ceram ic

O.l~F

12V

"

C109

825001410

Ceram ic

O.l~F

12V

"
"

"

"

ClIO

825001410

Ceram ic

O.l~F

12V

C111

825001410

Ceram ic

O.l~F

12V

C112

825001410

Ceram ic

O.l~F

12V

..

C 113

825001410

Ceram ic

0.1 ~F

12V

"

7 -46

SBCV (8/10)

LOC.

PART NO.

REMARKS

PART NAME & DESCRIPTION

DD600-BC 104M 12V

C 114

825001410

Ceramic

O.l~F

12V

C 115

825001410

Ceramic

O.I~F

12V

..

C 116

825001410

Ceram ic

O.I~F

12V

"

C 11 7

82500141.0

C eram ic

O.l~F

12V

C118

825001410

C eram ic

O.I~F

12V

..
..

C 119

825001410

Ceram ic

0.1 ~F

12V

"

C120

825001410

Ceram ic

O.I~F

12V

"

12V

C121

825001410

Ceram ic

O.I~F

C122

825001410

Ceram ic

O.l~F

12V

..
..

C123

825001410

Ceram ic

O.l~F

12V

"

C 124

825001410

Ceramic

O.l~F

12V

C 125

825001410

C eram ic

O.I~F

12V

C126

825001410

Ceram ic

0.1 ~F

12V

C 127

825001410

Ceramic

O.l~F

12V

C128

ECK D2H102KB

C eram ic

1000PF

C129

ECK D2HI02KB

C eram ic

1000PF

C130

ECK D1H471MB

Ceram ic

470PF

C131

ECK D1H471MB

Ceramic

470PF

C 13 2

ECC D1H220KC

Ceramic

22PF

Q1

2SC828A-R

T ran sister

Q2

2SA564A-R

T ran sister

Q3

2SA 7 20-S

Transister

Q4

2SC828A-R

T ran sister

Q5

2SA720-S

Transister

VR1

849916017

Variable resister

10Kn

IR 2

1Kn

IR 3

1 Kn

..
..

..
..

PN822H103H

J1

969926050

Short pin

Z-152-16P

J2

969926050

Short pin

Z-152-16P

J3

969926050

Sh ort pin

Z-152-16P

J5

969926053

Short pin

Z-149-3P

J6

969926053

Sh ort pin

Z-149-3P

JI0

969926053

Short pin

Z-149-3P

J12

969926053

Short pin

Z-149-3P

J13

969926048

Short pin

Z-149-3P
7 - 47

SBCV4 (9/10)

LOC.

PART NO.

PART NAME & DESCRIPTION

REMARKS

J14

969926048

Sh ort pin

Z-152-2P

J15

969926048

Short pin

Z-152-2P

J16

969926048

Short pin

Z-152-2P

J17

969926048

Short pin

Z-152-2P

J20

969926053

Short pin

Z-149-3P

J26

969926053

Short pin

Z-149-3P

J40

969926053

Short pin

Z-149-3P

J41

969926053

Short pin

Z-149-3P

J44

969926048

Short pin

Z-152-2P

J46

969926053

Short pin

Z-149-3P

J47

969926053

Short pin

Z-149-3P

J48

969926048

Sh ort pin

Z-152-2P

J54

969926053

Short pin

Z-149-3P

J 55

969926053

Short pin

Z-149-3P

J 56

969926053

Short pin

Z-149-3P

919926190

Short plug

Z -12 8

D1

MA 162

Diode

BZ

EAF14R06C

Buzzer

212D40301250

Cry stal

TM -02 7

Check pin

4H

DL2-24A

Socket

lOA

DL2-24A

Socket

PWD

U F P -0 3 A 0 2 # 2

Connector

DTEI-3

919023625

Housing

DBC-25S-FO

919904002

Guide

D 20418 -J 2

03 -50659

Pin

030-50660

Pin

o 1 5 -0 3 5 0 -0 0 0

Bracket

F F-20-00 2

Connector

D3,4,7,10,11
13,17,21

KB

15.9744MHz

7 -48

SBCV4 (10/10)

PART NO.

LOC.

PART NAME & DESCRIPTION

DCPS

919951189

Connector

VIDEO

PCN6B5P25DSG

Connector

REMARKS
1-380999-0

I

.

7 ·49

7.7 DOPLL PCB (for JO-740M, 840M,

850M~

7.7.1 O.uTLINE

The DDPLL PCB is a phase lock loop eonsisting of a:
• Phase Comparator
• Low Pass Filter
• Voltage Controlled Oscillator (YCO).
• V CO Divider
• Window Generator
The VCO phase makes it capable of synchronizing with
the incoming read data from the drive. If the phase
changes, indicating the read data Frequency is changing,
the Phase Comparator and the Low Pass Filter output
voltage increases or decreases just enough to ke.ep the
oscillator frequency the same as the frequency of the
read data, preserving the, synchronized condition.
(1) Phase Comparator
The function of the Phase Comparator is to synchronize the VCO frequency to the frequency of the read
data.
(2) Low Pass Filter
The Low Pass Filter translate pulsative signal of the
Phase Comparator into DC voltage.
(3) Voltage Controlled Oscillator (VCO)
The VCO consists of IC (SN74LS124), etc. The
frequency of VCO is controlled by DC voltage from
Low Pass Filter.
(4) VCO Divider
The function of VCO Divider is to divide a frequency
of VCO by counter.
(5) Window Generator
One Oock and one Data Window is generated for
every bit cell.
• Timing chart is shown on the next page.

7 - 50

....,
~

1-RAWOATAI5BI21 _L-Jl.~r1l--J
SOns 0 (5CIOI

500

n. a

4Bytes Il2 bilsl

------------~ ..... t_c

----.

N

15 bils
-\

c·

COO

Jl,~

I

II

I

~

I~~'I

·12
»
II

IPH

AO EN ISU21

D-t

-t

o
o

"
.-.-~

~

WR CLOCK II MHlll5011l

lB·O I\IIIT CLK. GTlllO!!1

4C·IO ("e21

""C·20 (RAWOTGTlI4C71

Set Phase (5021

......
~

A 12081

v (2061
OSC 00110111

o

WINO (6091

ROT (6061

Pump Up (3051

Pump Oown (3091

.1

II

I
I

I
I
"----J

rI-

n
n

CNT\6 (48151

"REAO DATA (6C61

"DATA WINO 16CBI

Jc·a (JeG)

H GAIN (Poll

1/2

WI

WI" fUliE:

E:Uu!::

---[f-~~

GAP

SYNC

1,0

_ _ _ _ _fL-

H GAIN 14C 101

I

GAP

I I
SYNC

n

WT EOGe

WT EDGE

DATA

)1

DATA

(

GAP

SYNC

n

1'0

I

GAP

I

SYNC

n~

DATA

__

SE T PHASE 15021

VIN IP61

,

---~----~r

f"~

....,j

U1

N

2/2

.. sv

t!)V

(50)

+!)VA(I-6B)

.....

+5V

~

W
c...
C

- - - - ( ) (/6)

'* READ

DATA

~

o

3:
c...
C

Voltage control

OSC

.~

~

3:

c

c

~

rr~
:I:
m
3:

»
-4

g
'-I

~

W/f>{O

(4 )
f: RiJEN(-VFO

SYNC)

<8)~

f.tlF/1

<

12 ';
*,couHT 16

PuP2(/-2E)

1__ _

O~2C) RAIN PP
- ?r) RD

(I

«

(/0 ')

."RQ

- - -c
>----irSYN

CIRCUIT

'''I''

I

o-L
>----j

(NO USE" )

JI

I

--~~=:. ~~(/~2E)
, __ .

U!IC)

(,,>0,

N~

7.7.4 JO-740M, J0-840M OOPLL COMPONENT LOCATION

I

--..;--~~[

r
I

-di --I»
1J
l~
\

I
.1

--"IVV-

-H-

N

-1:

~

.... ..J

J4 ~

RIO

~

01
5 ~

4LJ C6
r

4: :; »r---9- 6- 0- Z- - ' ,
1 -

:3

9_6_0_2_ _-'

c:

~

I

Ii ->

74LS 175
'---------1

It,.>
CI9

74LSOO

~

-I

9602

[

P7

SG[

]

C9

7"LS04

'=:;:= :::[ )~()
~
=:;:=
/

] ROlSO

.r-~-7-4-38----,1
R25
R26

L

U

03· ......

i

1'1

C20

R22

R29

P5

6

N

CIO
r-I~

ell

1'1
U

RI

N

R31

~

0

---"NY-

GO

--JWv-

07

R20

a:

:JCNTI6

74LSO"

t:jC:::

P4 SaM

..-_ _ _ _-.u~

~>

C'16

rf"
,.1--

[ ]

l t?

»r'>-7-"-L-S-I-6-1--',
,

,..,.Cl5

L_...JVINP6

R9

I

745124

1 el3 .J9~·
I
I [J
R~

r

:

C7

R24

~

' - i I-'J81'"lM

RS

f .2. . __
u

R27

c~ -w"B.S ~
L.::.JC:-=-____ ~!..~?J

el4

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.JVRI

I N r i~

--"IVV-

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L

CI

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i
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1'>~-7-"-L-S-7-,,--'1

74 ,- . . 6 I

veo
+

r-

R~

41-'

74 LS 93

-,1

J3rJ

1".>

.>

7_"_L_S_I_5_7---1

~:

[

~

I

tp. .__

~1~ 1M 2M

~I

I~

9602

o

WONE.--_ _ _ _---.

R5

I

i

0ETO

e

]C'::'::J

P2

[Jp3~5::

C4

)?

::!

~[

PI

L_ -,

I '-it-'CJR4~-"'Nw-

I

][
P8

I: SG

74 L 5 0 0

J13\

21~

][

P9

U

J.....
P_7_4_L_S_7_4__

.A. DDPL L

2

50

J

L

7 - 54

t!:
or::

"'\ R21

--"I'IV-

"",RI3

TR3 RI2

*iii

/

RI5

'"

--"I'IV-

"-"'RI"
TR402

2736-

J

~
-*

C:=':--=-':-=J

~

OOPLL (1/4)

7.7.5 JD-74OM. JD-840M. 850M DDPLL PARTS LIST

L OC.

PART

NO.

PART NAME & DESCRIPTION

C

3 B

SN74LS74N

4 B

SN74LS161N

1/

5 B

SN74LS04N

1/

1 C

SN74LS157N

2 C

FC-9602PC

3 C

FC-9602PC

4 C

SN74LS175N

5 C

FC-9602PC

6 C

SN7438N

"
"
"
"
"
"

1 0

SN74LS93N

2 0

SN74LS51N

3 0

SN74LS74N

/I

4 0

SN74LSOON

"

5 0

SN74LS04N

/I

6 0

SN74LS74N

"

2 E

SN74LS124N

/I

TRI

2SC828A-R

Transistor

TR2

2SC828A-R

"

TR3

3 SK-49R

TR4

3 SK-49R

"
"

D 1

MA-162

D 2

MA-162

1/

3

MA-162

/I

0

R 1

ERD25T]682

R 2

ERD25T1333

R 3

ERD25TJ333

I

"
"

Diode

6.8kn

1/4W

/I

33kn

1/4W

1/

33kn

1/4W

carbon

7 - 55

REMARKS

OOPll (2/4)

L ~C.

PART

NO.

PART

NAME & DESCRIPTION

R 6

ERD25TJ471

carbon

470 n

1/4W

R 9

ER02 5 CKF402 2

Meta 1

402kn

1/4W

Rl1

ERD25TJ822

Carbon

R12

ERD25TJ392

R13

ERD25TJ152

"
"

R14

ERD25TJ392

R15

ERD25TJ152

R16

ERD25TJ473

R17

ERD25TJ473

R18

ERD25TJ681

R19

ERD25TJ680

R20

ERD25TJI02

"

R21

ERD25TJI01

"

R22

ERD25TJ223

/I

R23

ERD25T J 4-71

"

R24

ERD25TJI02

"

R25

ERD25TJ151

/I

R26

ERD25TJ152

"

R27

ERD25TJ471

/I

R28

ERD25TJ152

R29

ERD25TJ152

"
"

R32

ERD25TJ471

Carbon

VRI

849916018

Variable resistor

VR2

849916018

"

L 1

932320013

Co i 1

8.2Kn

1/4W

3.9kn

1/4W

1.5I NO
Waveform

8243

0)1

PIN

YES

21

~=:
Replace K/B unit.

NO
Does Error occur?

YES
Control P. C. B.

K/B Unit

Ref. Signal

Ref. Circuit

(e

.

RST 5.5
)
8212 (2A) 23 Pin

e INPUT
8212 (2A) 13Pin

(e

Trouble of PROM 2716

)

e Clock Circuit Xtal 6MHz

Ref. Signal

(e

KBSTB

< 18 Pin>

KBO ,.... KB7

Fig. 9 - 10

9 - 13

K/B

< 10 ......

)
17 Pin>

100ms

-----1

9.2.4 MONITOR TV AND TV CONTROLLER INSPECTION

Monitor TV & TV Cont. Inspection

Does CRT screen appear?
YES

Check or replace
Control P.C.B.
Video Signal Generator * 1

NO

Is Video <1> present at Video connector?

>---~

Ref.
IC
location
YES

15E, 15F. 15G)
16E,16F
( 17E
13G

*1 Refer to Schematics 5/7.

Refer to Monitor TV
Check Flow
(1)&(2),

Abnormal Screen

Are H sync <3> and V sync <4>

1

present at Video Connector?
YES

Wave form

Check or replace
Control P.C.B.
Ref.
IC
location

16C, 160)
( 16E,16F
16G,

HSY (P5)

~3V IE-- 24mst ~
VSY (P4)

OV~S
- , {:1.6ms

Fig. 9 - 11

MONITOR TV & TV CONTROLLER (1/2)

9 -14

!-l.

NO
Adjust variohms on TV unit?

YES
Refer to Service Manual 5.3.
Points and method of control with
variable resistors.

*1
60

~

at TV DC Po wer Connector

NO

V
( Main Ripple
)
m pop lower than 1 kHz
Ripple of +12V * 1
YES

Check the connector contact
of +12V.

Check or replace DC Power
Supply unit.

Refer to Monitor TV check flow.
( (3) (4) (5) (6) (7) (8) )

Fig. 9 - 11

MONITOR TV & TV CONTROLLER (2/2)

9 - 15

Monitor TV Check Flow

(1) . No characters are displayed.

No characters are
displayed.

No raster is
displayed.

See the section of
"No raster is displayed".

(Is the raster displayed? )

waveform at terminal

• - ·f2V

">----< 8 of the input connector for

Check the
. control PCB

video input.
The same waveform at
terminal V1.
Waveform is observed.
Wire disconnection in lead
wires VC1 ,.,. V1

Normal

o [Vl
Video +8 supply line

[40vl

Normal

CRT circuit

Video circuit
(Q14)

Fig. 9 - 12

9 - 16

1----- (2)

No raster is displayed.

No raster is displayed.

Raster is
displayed.

See the section of
"No image is displayed",

(Is the raster displayed? )

12V
supply line

Normal
Normal

Q44, IC41 high
voltage circuit.

FBT' Q44
IC41 'C444

High

Normal

FBT

044·047

Waveform is
observed.

- L430

-Q44

Q18
~-=:2.5V

-U·
IE

10~s

r - - - - . . 1 . - - - - - . 65~s

IC 41

Check the control PCB

Fig. 9 - 13

9 - 17

L-

)1

+O.4V
0-0 V

(3) The picture size is small.

The picture size is small.

Normal

Check by controlling ampi itudes of L403 and V R 32.

Low
+B supply line

Normal

Replace 044, FBT

Fig. 9-14
(4) Horizontal amplitude is insufficient.

Horizontal amplitude
is insufficient.

I mproper control with L403

Check the control PCB.

Replace L403, 044, FBT

Fig. 9 - 15
9 - 18

(5) Vertical amplitude is insufficient.

Vertical amplitude
is insufficient.

Normal

>--------i

I mproper control with V R 32.

Cannot be controlled

Replace IC31.

Fig. 9 - 16

(6) Vertical hold cannot be made.

Vertical hold cannot
be made.

>-....;N:...:.o;:,;r:....:.m:..::a:.:,I_ _ _--l I mproper control with V R 31 .

Abnormal

Normal

Replace IC31.

Fig. 9 - 17

9·19

Check the control PCB.

(7) Single vertical line

Single vertical line

Deflection coil
(between P1 and P2)
Replace L403
L404,C444

Fig.9·18

(8) Single horizontal line

Single horizontal line

Abnormal

12

Replace R306, 031

[11.5V]

Abnormal
Replace
IC31

Normal

p
vp
'rV-l -

Abnormal

Abnormal

J-J!v

PP
-

Normal

Deflection coil
(between P3 and P4)

9·20

Fig. 9· 19

9.2.5 PORT INSPECTION

Port Inspection
Test No.
Set Communication
Port Adapter.

port 1

16 ; 1.

LF

port 2

17 ; 1.

LF

port 3

18 ; 1.

LF

Set and start
Test program.

NO

Periferal Equipment trouble

Caution
1 mis-setting of
baud rate selector

Is good signal level
present at connector?

High level = +5V-+12V)
( Low level = ~V--12V

NO

(

2 mis-setting of
mode or command
for 8251
3

YES
Check or Replace
.Control P.C.B.
Ref. IC (SN75150 or SN75154)

Is TXRDY(15 pin) or
RxROY (14 pin) present
at 8251?

YES
Check or Replace Control P.C.B.

Check or replace
Control P.C.B.

Ref.IC (. MP08251C
)
Ref. Cir. . Baud Rate Clock
Generator

Ref. I C (808SA - 2)

Fig. 9 . 20

9·21

PORT

mis-setting of
cable contact

9.2.6 CONTROL PCB INSPECTION

Control P.C.B. check.

Set and start Test Program.

NO

YES

Check or replace Control P.C.B.

Ref. IC or circuit

1
2
3
4

( 5
6

CPU (SOS5A-2) (10L-29-34 pin)
DRAM (K4116·3)
Bank F/F (16K)
Oscillator (16B, 17C)
EPROM (12G)
Power Clear (6M)

YES
RAM ERROR
NO

Check or replace Control P.C.B.

Check or replace Control
P.C.B.
Ref. (CPU (SOS5A-2)
IC
DV1S (OSC)
74LS161 (17C)

Dv(n2:;"~' :~MJ

Ref.IC

)

2H - 9H
2E ,.. 9E
2F ,.. 9F

(

Refresh Controller
(

Fig. 9- 21

CONTROL PCB

9-22

( 1J ,.. 9J)
1K ,.. 8K

1

9.3 SERVICE TOOLS
9.3.1 BLOCK REPAIR

Name

Part Number

*Oscilloscope (20MHz)

N/A

* Plus long Driver
(50cm) with Magnet

N/A
(Refer to Test Program Manual)

*Connector for Port
* Execiser

FDD/EXT/TU

9.3.2 PARTS REPAIR
Name

Part Number

* Oscilloscope (50MHz)

N/A

* Plus long Driver
(50cm) with Magnet

N/A

* Connector for Port

(Refer to Test Program Manual)

* Execiser

DFF/EXT/TU

* Alignment Diskette

SA120

*Cartridge Guide

069D47400091

Adj. Tool

*Load Bail Gauge

069037400102

* Spanner Wrench

9 - 23

10. IC LSI CATALOG

Refer to No.2

10-1

11.

PRECAUTIONS ON HANDLING MOS IC

LSI as applied to control PCB is called MOS IC which
requires different handling method from other IC because
of its mechanism. It suffers breakdown of internal
electrode influenced from external electricity (static
electricity, leakage current from soldering iron). Although
protective transistor is incorporated in internal electrode
to increase reliability, protective transistor itself is broken
if much larger voltage is applied causing trouble. Therefore, be careful to the following points during service time,
storage and transporation.

Securely take ground
to solderi ng iron.

Sponge
Fig. 11 - 1

(A) Voltage is often applied during soldering work because of soldering iron leak. Therefore, use highly
insulated type iron or, if normal iron is applied,
take grounding to chassis as shown on the right
drawing.
(B) Do not apply soldering or replacement during current
conduction.
(C) In case of storage or returning mail, securely bury it
in conductive black sponge.
(LSI is delivered as inserted in conductive black
sponge for repair.)
(D) Do not mount LSI on plastic easily subjected to static
electrification or foamed styrol after removing it
from conductive sponge.

11 • 1

Replacing method of LSI,

Ie

Use soldering iron of approx. 30W having small tip
for removal of LSI or IC. Also apply solder pult
(solder soaker). It not sucking type, soak solder by
syring or braided wire as applied to CRT coating
earth, etc.

12. MOS Ie LIST
i8085A - 2
i8257
i8275
i8251 (J,LPD8251 C)
i2716
K4116-3

13. REFERENCE
Description is made by extracting partly from the
following brochures.
• MCS-85 USERS' MANUAL
INTEL CORPORATION
• COMPONENT DATA CATALOG
INTEL CORPORATION.

FD1771A-Ol
MB8866 (FD1791A)
MCM66740 (ASCII)
MCM66760 (British)
MCM66770 (German)
MCM66780 (French)
.u,PD8253LC (K/~) __

• THE TTL DATA BOOK
TEXAS INSTRUMENTS CORPORATION
• DATA CATALOG
MOTOROLA SEMICONDUCTORS
CORPORA TION
•

DATA CATALOG
WESTAN DIGITAL CORPORATION

• DATA CATALOG
NATIONAL SEMICONDUCTOR
CORPORATION

12 - 1
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