Amstrad Cpc464 User manual

gee

ees

CONTENTS

Page

Techmcal

Specification

2

Flash

Test

2

CPC464

Cabinet

Parts

List

2

CPC464

Keyboard

Cabinet

Drawing

3

Cassette

Mechanism

and

Parts

List

4,5,6

Cassette

Deck

Alignment

Instructions

6

CPC464

Cassette

PCB

7

CPC464

Cassette

Deck

Circuit

Diagram

8

CPC464

Basic

Hardware

Analysis

Cassette

&

Software

Analysis

10

CPC464

Function

Diagrams

10

&

11

CPC464

Main

PCB

12,13

&

14

CPC464

Circuit

Diagram

15

&16

CPC464

Electrical

Parts

List

17

GT64

Cabinet

Drawing

and

Parts

List

18

GT64

Circuit

Diagram

&

Voltages

19

GT64

Main

PCB

&

Alignment

Instructions

20

GT64

Electrical

Parts

List

21

CTM640

Cabinet

Drawing

&

Parts

List

22

CTM640

Electrical

Parts

List

23

&

24

CTM640

Alignment

Instructions

23

CTM640

Voltages

24

CTM640

Circuit

Diagram

back

pull

out

CTM640

PCB

back

pull

out

SAFETY

TEST

All

monitors

are

safety

tested

to

the

following

specifications.

1).

Flash

Test

at

4kV

between

the

live

and

neutral

of

the

mains

lead

joined

together

and

ALL

accessible

metal

points

on

the

exterior

of

the

set.

2).

Insulation

Resistance

Test

between

the

live

and

neutral

of

the

mains

lead

joined

together

and

ALL

accessible

metal

points

on

the

esterior

of

the

set

to

show

a

resistance

of

at

least

4Mohm.

If

after

servicing

there

is

any

doubt

about

continued

electrical

safety

the

above

tests

should

be

carried

out.

TECHNICAL

SPECIFICATION

LSI

CHIPS:

Z80A

processor

running

at

4MHz

64K

bytes

of

RAM

(over

42K

available

to

user)

32K

bytes

of

ROM

containing

BASIC

and

the

operating

system

6845

CRT

controller

device

Gl

sound

generator

chip

AY-3-8912

3

voice,

7

octave

8255

parallel

1/0

device

interface

to

the

Gl

sound

chip

DISPLAY

SPECIFICATION:

Mode

Normal

High

Res.

Multiclr.

No.

of

4

from

2

from

16

from

Colrs.

27 27

27

Vert.

200

Dots.

Horiz.

320

640

160

Dots.

Horiz.

40

80

20

Chars.

KEYBOARD:

74

keys

—

qwerty

style,

numeric

cluster,

cursor

and

copy

cursor,

large

enter,

shift,

caps

lock,

tab,

escape,

delete,

clear,

control.

DATACORDER:

Write

speed

software

selectable

—

1K

baud

or

2K

baud,

read

speed

automatically

established

by

software.

Write

protect

interlock.

Motor

on/off

controlled

by

software.

ADD-ON

ABILITY:

Compact

floppy

disk

drive

system

including

CP/M*

and

LOGO

language.

Centronics

compatible

printer.

Joystick(s).

Additional

ROM’s.

Additional

RAM

up

to

8160K.

EXTERNAL

SOCKETS:

PCB

edge

connectors

for

general

purpose

expansion

and

Centronics

parallel

printer.

9

socket

for

joystick

6

socket

for

—

RGB

and

sync

—

composite

video

—

luminance

and

sync

3.5mm

socket

for

stereo

sound

output

5mm

socket

for

CPC464

power

supply

(supplied

exclusively

from

screen)

DIMENSIONS

(mm):

w

h

d

Keyboard

:

580

70

=«-170

CTM640

>

375

=

340

365

GT64

>

305

315 335

WEIGHTS

(kg):

Keyboard

t

2.4

CTM640

>

10.6

GT64

:

6.3

POWER

SUPPLY:

Screen

System:

240V

AC

50Hz

(keyboard

and

datacorder

power

supplied

by

screen

system)

*CP/M

is

a

registered

trademark

of

Digital

Research

Inc.

AMSTRAD

and

AMSOFT

are

trademarks

of

Amstrad

Consumer

Electronics

PLC.

In

keeping

with

our

policy

of

continually

improving

our

service,

and

technical

quality

of

our

products,

we

reserve

the

right

to

change

component

types,

manufacturers,

sources

of

supply

or

technical

specification

at

any

time

Keyboard,

Colour

Monitor.

Green

VDU

—

Designed

in

U.K

Made

in

Korea

AMSTRAD

CONSUMER

ELECTRONICS

PLC

BRENTWOOD

HOUSE,

169

KINGS

ROAD,

BRENTWOOD,

ESSEX

CM14

4EF

Telephone:

Brentwood

(0277)

228888

Telex:

995417

AMSELE

G

CPC464

CABINET

PARTS

LIST

Sym|

Description

1

Top

Cabinet

3

Ribs

170001

2

|

On/Off

Switch

170002

3.

|

Vol.

Control

Pot.

170003

4

|

Knob

Vol.

Control

170004

5

|LED

Red

170005

6

|

Cassette

Lid

170006

7

Key

Board

Assy.

170007A

Z.7D101

7

|Key

Board

Assy.

170007B

270102

8

|

Rubber

Contact

mat.

170008

Key

Board

9

|Rubber

Contact

Mat

170009

Digit

10

|

Rubber

Contact

Mat

170010

Spacer

11

Bottom

Cabinet

170011

3

Ribs

12

|Cassette

Mechanism

170012

13

|

Tape

Counter

170013

14

|Counter

Belt

170014

15

|

Record

Button

Cass.

170015

16

|

Play

Button

Cass.

170016

17

|Rewind

Button

Cass.

170017

18

|Fast

Forward

Button

170018

Cass.

Stop/Eject

Button

170019

Cass.

Pause

Button

Cass.

170020

Cass.

Door

Spring

170021

1/0

Socket

170022

User

Port

Socket

170023

D.C.

Socket

170024

DIN

Socket

170025

Inlay

Main

170026

Inlay

Cassette

170027

Keyboard

Contact

170028

P.C.B.

/A

Keyboard

Contact

P.C.B.

/B

Bottom

Cabinet

5

Ribs

Top

Cabinet

5

Ribs

Speaker

170029

170030

170031

170124

CPC464

CABINET

DRAWING

CASSETTE

MECHANISM

CASSETTE

MECHANISM

CPC464

CASSETTE

MECHANISM

PARTS

LIST

Sym

|Description

R/P

Head

Erase

Head

Base

Auto

Stop

Arm

Stopper

809172

Pinch

Roller

Assembly

809162

Spring

Pinch

Roller

809161

Fibre

Washer

809175

Rewind

Spool

809160

Take

Up

Spool

809159

Record

Safety

Lever

809158

Idler

Gear

809173

Back

Up

Spring

170203

Main

Belt

170204

Flywheel

809156

Locking

Plate

Stopper

170205

Locking

Plate

170206

Spring

Post

Locking

Plate

170207

Motor

170208

Idler

Assembly

809155

Pause

Lock

Plate

809168

Leaf

Switch

809157

F.F.

Idler

Arm

Assembly

809152

Eject

Lever

Cassette

Door

170209

Spring

Cassette

Buttons

170210

Motor

Pulley

170211

jLeaf

Switch

170212

170201

170202

809170

809171

CASSETTE

DECK

ALIGNMENT

INSTRUCTIONS

To

check

cassette

module

independently

of

the

C.P.U.

connect

5V

DC

across

points

B(-)

and

C(+),

and

link

E

to

G

and

H

to

F.

The

cassette

will

then

operate

in

an

audio

mode.

(See

page

8

-

Cassette

Circuit

Diagram)

Equipment

Required:

Frequency

Counter,

AV.O.,

V.T.V.M.,

Oscilloscope

&

Test

Tape.

STEP

FUNCTION

SIGNAL

IN

SIGNAL

OUT

METHOD

REMARKS

Cassette

Azimuth

Adjustment.

Monitor

V.T.V.M.

1)

Insert

Test

Tape

recorded

at

6kHz

constant.

Monitor

switched

on

and

fix

2)

Set

Volume

to

maximum

on

CPC464.

connections.

3)

Connect

V.T.V.M.

to

7

of

I.C.302

to

read

between

330mV

to

520mvV.

By

adjusting

azimuth

screw

on

the

cassette

head.

2.

Speed

Check.

Put

the

standard

tape

|

Monitor

Check

output

from

the

tape

on

the

oscilloscope.

Speed

variation

£4%

will

not

in

the

cassette

Oscilloscope.

The

range

to

be

used

is

100uS.

affect

software

loading.

mechanism.

9b81-

€

/-Id

yS000SW

COE

Id

Yi000LW

l0EGId

9d

ALLASSVO

V9VIdd

(921UM)

a+

(49018)

GND

BLOGS

PE

CH

100d)

Si:

Gee

OFIFYT

10E2/

8SS2-1

[Dd

VSO00LH

(Oesod

64-8-1-d@s

1

4-S>9

i

c

WVYSVIC

LINDYID

WOAG

ALLASSVO

p9vDd9

75000SH

CONNECT

TO

CPC464

-

BASIC

240V

AC

MAINS

HARDVVARE

ANALYSIS

RED

LED

LIGHTS

REPLACE

MAINS

FUSE

CHECK

FOR

FAULTY

CABLE

OR

PLUG

ASSY

%

FROM

MONITOR

2

:

uw

YES

—_

5

i

Coane

a

FAULTY

LED

e

SOLDERED.

BROKEN

PCB

TRACK

z

q0iNze

FAULTY

CONNECTER

CHECK

KEYBOARD

PCB

F

FOR

SIGNS

OF

ABUSE:

fe)

-

CRACKS

a

—

LIQUID

SPILLAGE

a

~

DISTORTED

MOUNTING

5

CHECK

CONNECTOR

LEAD

#

TEST

SWITCH

AND

TERMINATION

5

ON

COMPUTER

FAULTY

SWITCH

KEYBOARD

UNI

RGB

VIDEO

ANY

YES

CONNECTOR

PICTURE

INSERTED

AT

ALL

?

CHECK

KEYBOARD

IF

UNIT

STILL

TRY

REPLACE

OK

FAULTLY

SEEK

TAPE

ANOTHER

SPECIALIST

CONNECTOR

TAPE

ADVICE

NO

IMPROVEMENT

FAULTY

AUDIO

AMP

OR

SPEAKER

FAULTY

VOLUME

CONTROL

FAULTY

AUDIO

CONNECTOR

PLUG

/SOCKET

FAULTY

AY-3-8192

SOUND

IC

SEE

CASSETTE

FLOW

CHART

NO

K

STILL

NOTHING

(

FAULTY

ULA

rc

A

XK

a

FAULTY

VIDEO

CONNECTOR

FAULTY

CABLE

ASSY

FAULTY

ULA

FAULTY

PCB

r

CHECK

FAULTY

MONITOR

CABLE

TERMINATION

INTERNAL

CONNECTORS

%

BRIGHTNESS

CONTROL

Z80A

6845

CRYSTAL

RAM

CASSETTE

&

SOFTWARE

ANALYSIS

CHECK

CLEAN

CHECK

HEAD

CHECK

SWITCH

CHECK

TAPE

CONNECTIONS

ON

CASSETTE

MOTOR

CONT-

TO

TAPE

DECK

TAPE

HEAD

ALIGNMENT

KEYS

ROL

RELAY

POSSIBLE

FAULT

WITH

COMPUTER

BOARD:RAM

FAILURE

ULA

FAILURE

SOFTWARE

LOADS,

BUT

WITH

UNUSUAL

RESULTS

N.B

ACTUAL

‘PHYSICAL’

DAMAGE

TO

Full

diagnostic

teste

on

the

C.P.U.

can

be

carried

out

using

the

SOFTWARE

TAPE

WILL

PREVENT

Amstrad

RP1

Test

Pack.

IT

FROM

LOADING

AT

ALL:

IE

Please

contact

Amstrad

PLC

for

information

on

same.

THERE

WILL

BE

NO

‘HALF’

WORKING

PROGRAMS.

THEY

EITHER

LOAD-

OR

THEY

DON'T.

CPC464

FUNCTION

DIAGRAMS

ENA

-

(Cil4

veo

8Q

6D 7D

72

62

6D

5D 5a

ICH3

Veo

2G

ty!

2A4

1¥2

243

13

242

lYA

2Al

OUTPUTIQ

ID

2D 20

32

3D

4D

42

GND

CONROL

1C104.105

STROBE

A

7

yeroag

vec.

26

SELECT

PATA

INPUTS

_

OUTPUT

ICHO

Yoo

ga

4A

4Y 98

3A

GY

1G

BAA

|

A

lic

ic2

ici

ico

Vy

PEER

iP

OE eT

EARERRCAREARCAGE:

/

BTU

EI

tI

STROBE.

OU

BUT

iG

seLECT

DATA

INPUTS

1Y

~

GND

PAS

IBS

1Ne

OA

eB

2k

“GND

INPUTS

OUTPUTS

AB

C

Dd

9

8

A B

CD

BCD

-TO-DECIMAL

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ICil2

Veco

4B

4A

4Y 3B

GA

OY

iclol

fia)

fe)

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1A

1B

OLY)

2A

2B

O2Y

=~

GND

{C106

Vcc

8@

8D

7D

7Q

6@

6D

5D

5@

CLOCK

ICl25

cc

48

4A

4Y¥

3B

3A OY

eet

Eley)

TEV

TT

I

CLEAR

12

ID

2D 2@ 3@ 3D

4D

4

GND

iA

1B fy

2A

2B

2Y

GND

11

FUNCTION

FOR

A

MICROCOMPUTER

AND

IC's

DISPTMG

cuDISP

Vee

ANALOG

CHANNEL

C

TEST

|

Vee

ANALOG

CHANNEL

B

ANALOG

CHANNAL

A

Vss

10A7

10A6

10A5

10A4

1043

10A2

10Ai

I0Ag

(C108

IC102

CPC464

FUNCTION

DIAGRAMS

PAZ

lo

PAe*

PORT

A|

PAi

**

READ

INPUTS

RD

CHIP

xe

SELECT

CS

PORT

ADRESS

INPUTS

Yo

PORTC

pao

~-[4|

GND

[ar

>

Ao

™

PC7

~~

PCé6

pcs

*+([/2}

PC4

13

PCo

+>

|/4

PCy

[5

PC2

**/6

10/07

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Au

—PAS|

yp

ADRESS.

|

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pas

|

PORTA

Aa

B7]=PA7

ik

Aia~-[4]

ITE

WR

CONTROL

Ais

RESET

~

5

INPUTS

p

L4~-Do

(

Dav

oD}.

DATA

D3"*

Bus|

~?

D2

Ds*

=D3|

DATA

De

BASS

Da

+5V-

Ds

De

“D6

DATA

~

bus|

°7

D7

Do

vec

|

Di

PBT

INT

~

cey

|

INT

PBs

CONTROL|

NMI

>

pps

|

Yo

HALT

—

PORT

B

Pnebd

sysrem

|

MREQ

=

=»

PBS

CONTROU

FORQ

~

20,

Y

ee

Y

1

ESC]

Q

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LOck

i

¢

Va

V

¥

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pa

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Brace

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&

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R

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F

B

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ce

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|

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BUS

RESH

|

system

CONTROL

cPy

CONTROL

bs]

BUSRQ

CPU

BUS

CONTROL

~RD

~+WR

|

sysTEM

CONTROL

ake

Ey=23

STI/0!

Sound

Jack

1103

2

eo

4

tT

rorrrc---

é

HD6845SP

CRTC

Je

23256

256K

Bit

Rom

4

Sound

Generator

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10

11

12 13

14

15

16 17 18

19

20

21

a?

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07

tS

as

ato

we

AS MM

a2 40

ve

Ds

ws

24

»,

CPC464

CIRCUIT

DIAGRAM

¢

tz

>

|

*

AIS

2

Als

oft

1

I

Ici0g

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cCONe

74LS153

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a3

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FIRE

1

:

a7

>

FIRE

2

PADDLE

>

4

RIGHT

PORT

>3

LEFT

9 PIN

*D?

2

DOWN

CONNECTOR

en

102

>

8

COMMON

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DECOUPLING

wMAtZ

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:

MATT

cS

aid

MA?

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sa

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WAS

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|

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De

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pe

pr

-

22

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bo

oo

2

as

RESET

s

Re

L

PEN

10K

13

CURSOR

1110

74LS132

a

8

to

ae

Cl

3

ORD

TOWR

ret

ZB0

DATA

BUS

EXPANSION

BUS

VIDEO

GUTPUT

CONNECTOR

J101

¢

GPIN

DIN)

Value

Carbon

Film

Resistors

(all

“aW

unless

shown

otherwise)

560hm

680hm

1000hm

1200hm

1800hm

2200hm

3300hm

560ohm

6800hm

8200hm

1kohm

2k2ohm

3k3o0hm

4k70hm

5k6o0hm

10kohm

12kohm

18kohm

22kohm

33kohm

47kohm

180kohm

1Mohm

120hm(%2W)

CPC464

ELECTRICAL

PARTS

LIST

Circuit

Reference

R126,

128,

130,

136,

137

R143,

144

R154,

313,

325

R125,

127,

129,

135,

301

R324

R113,

121-123,

132,

145

R102-112,

124

R321

R320,

323

R314

R114-117,

120, 133,

142

309,

312

R318

R308,

311

R101,

118,

119,

304,

305

R319,

322

R302,

303,

307

R317

R316

R138,

139

Electrolytic

Capacitors

10022

10028

10032

10034

10037

10040

10044

10050

10052

10054

10061

10069

10073

10077

10079

10085

10087

10091

10093

10097

10101

10115

10147

170126

150514

400107

170126

24004

24007

24013

24020

170217

170128

170129

1uF/50V

C309,

311,

314

10uF/16V

C324

22uF/10V

C308,

318

47uF/10V.

C101,

102, 303,

306

100uF/10V

C301,

304

100uUF/16V

C315

470uF/10V

C322

|

Ceramic

Capacitors

33pF/50V

C316

200pF/50V

C321

220pF/50V

C310

270pF/50V

C313

470pF/50V

C307

0.001uF/50V_

|

C320

0.022uF/50V

|

C317,

319,

323

0.1uF/25V

C104-128

Polystyrene

Capacitors

0.001uF

C312

0.01uF

C305

0.068uF

C302

|

Circuit

Ref.

|

Description

1.C.s

C101

HD74LS145

1C102

AY-3-8912

1IC103

TMM-23256P-1950

1C104,

105,

HD74LS153

109,

113

IC106

HD74LS273

IC107

M5L8255AP-5

1C108

HK6845SP

16110,

112

HD74LS132

C111

Z8400APS

10114

HD74LS373

IC115

HD74LS244

1C116

20RA043

1C117-124

HM4864U-2

1IC125

ZN7400E-D3

IC304

LA4140

[:ca02

LA6324

Part

No.

170101

40001

170102

170103

170104

170105

170106

170107

40080

170108

170109

40007

170110

40008

170111

170112

Part

No.

Description

Circuit

Ref.

Transistors

Q101

KTC2120Y

170113

Q102,

301

KTC1815Y

170114

Q103

ZTX312L

50001

Diodes

D101

D301

D302

Coils

&

Tx.

L301

82uH

T101

C-12

Jacks

&

Connectors

SIL

-

IN4002

400111

LED

-

Red.

SLP145B

170116

SIL

-

1S2472

-

HL

|

170115

170117

170118

J101

DIN

Socket

6

170025

J102

Joystick

Socket

9

170023

J103

Input/Output

Socket

170022

3.5mm

R.C.A.

J104

DC

Jack

Socket

170024

J105-112,

116]

Socket

I.C.

8

Dual

In

Line

170119

J113

Socket

I.C.

14

Dualln

Line

|

170120

J114,115

Socket

I.C.

20

Dual

In

Line

170121

Switches

SW301

SW302

SW303

Miscellaneous

170122

170002

170007

Slide

Switch

R/P

Power

On/Off

Key

Board

Assembly

VR301

Volume

Control

20k

170003

RY301

Relay

17.0123

SP301

Speaker

170124

X101

Crystal

HC-18/u

16MHz

170125

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CIRCUIT

DIAGRAM

Lot

|

-

71011202

WES

MZ/t

MES

MB/I

OlADS)

|

1623

ol

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z

1

a

TERE

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ea

ES

PCB701

GT64

VOLTAGE

DATA

C701

-

UPC1031H2

1-5.99V

DC

2-11.98V

DC

3

-

10.86V

DC

4-10.45V

DC

5

-0.61V

DC

6

-

2.93V

DC

7

-

5.26V

DC

8-

OV

DC

9-6.0V

DC

10-11.99V

DC

1C501

-

L78MG

-

20.1V

DC

-

OV

DC

3-12.5V

DC

4-49V

DC

13.6V

DC

20.6V

DC

5.5V

DC

12.6V

DC

Q501

5.1V

DC

Q502

12.0V

DC

Q605

or

with

an

‘S’

prefix

on

the

part

numbers;

are

safety

critical

items

and

must

be

replaced

with

items

having

an

identical

safety

specification.

All

these

items

may

be

purchased

direct

from

Note:

All

parts

shown

with

either

the

symbol

AN

AMSTRAD

CONSUMER

ELECTRONICS

PLC.

2.2V

DC

39.5V

DC

2.0V

DC

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FUNCTION

SIGNAL

IN

SIGNAL

OUT

METHOD

|

~~~

REMARKS

5V

Adjustment.

Monitor

Switched

on.

AN.O.

across

C519.

Adjust

VR501

to

obtain

SV.

Pane

=|

12V

Adjustment.

Monitor

switched

on.

Emitter

of

Q502

&

Earth.

|

Adjust

VR502

to

obtain

12V.

a

3.

H.

Hold.

Monitor

switched

on.

Monitor

Screen.

Connect

Frequency

Counter

to

CRT

Heater.

Adjust

L703

to

obtain

15625Hz

on

Frequency

Counter.

V.

Size

&

Linearity.

Page

Program

for

Monitor

Screen.

Top

of

the

page

can

be

adjusted

with

VR703

and

The

adjustments

are

Linearity

Graphics.

Bottom

of

the

page

can

be

adjusted

with

VR702.

&

V.

Size

respectively.

Adjust

the

magnet

on

the

back

of

the

neck

to

centre

the

border.

Centering

Adjustment.

|

Program

Border

-

26.

Monitor

Screen.

GT64

ELECTRICAL

PARTS

LIST

Carbon

Film

Resistors

(1/4W)

Polypropylene

Capacitors

47ohm

R723

10021

0.0033uF/630V

|

C733

170619

820hm

R721

10030

0.068uF/400V

|

C729

170620

eee

a

618

eee

Tantalum

Capacitors

3900hm

R619,

722

10046

1uF/25V

170621

aoonm

|

Reoa,

604711

19052

Part

No

1kohm

R506-508,

510, 601,

609,

10061

LC.s

730

L78MG

-

OEC

170446

1k50hm

R501,

717

10065

L78MG

170446

2k20hm

R620

10069

UPC1031H2

170622

2k70hm

R612,

705

10068

:

3k30hm

R502

10073

Transistors

3k9ohm

R610,

701,

702, 716,

718

10075

Q501,

502

28D313

50005

4k7ohm

R504,

714

10077

Q503,

505,

KTA1015Y

170453

5k60hm

R503

10079

603,

604

-

8k2ohm

R713

10083

Q504,

506,

KTC1815

170447

10kohm

R611,

707, 712,

725

10085

601,

602,

701

15kohm

R706

10089

Q605

KTC2229Y

170624

22kohm

R710

10093

Q702

KTAQ50Y

170448

33kohm

R731,

732

10097

Q703

2S8D1159

170623

39kohm

R704

10099

-

47kohm

R719

10101

Diodes

56kohm

R726

10103

D501-504

Rect.

30D

-

IFC

170625

Carbon

Film

Resistors

(/2W)

Bene

30s

ide

‘OG

:

a

ae.

220hm

R727

170601

D601

Zen.

RD47FB

170626

1kS5ohm

R509,

615

1422126

D602,

701

Sili.

DS442xX

-

BT

1422117

22Mohm

R728,

729

170602

D603

Zen.

RD56FB

170627

Metal

Film

Resistors

on

ne

Be

uede

Weecae

tohm/1W

R708

170603

D705

Rect.

VO6C

170630

0.220hm/2W

R505

170604

D706

Rect.

B

B-4

1422116

4ohm7/2W

R614

170605

D707

Rect.

10D-2

1400123

120hm/2W

R724

170606

;

Coils

&

Transformers

Fuse

Type

Resistor

L701

D.Y.

71011202

170510

ales

R715

809256

L702

Linearity

CL.

21000006

170631

: :

L703

Horizontal

C.L.

305Y001

170632

Ceramic

Capacitors

L704

C.L.

100uH

1400148

100pF

C603

1422144

T501

Power

Tx.

0866006

$/170512

200pF

C604

400107

T701

H.Drive

Tx.

RB20852

170633

0.001uF

C724

1400125

1704

F.B./Lopt

FB164

170634

0.0047uF

C726

170600

—|

Loser

C501-508

24015

Variable

Resistors

:

VR501

S.F.

5000hm

1422189

Electrolytic

Capacitors

VR502,

703

‘|

SF.

2k

1400230

1uF/160V

C730

1422151

VR601

ROT.

1k

170518

2.2UF/50V

C717

809246

VR602

ROT

10k

170519

4.7uF/50V

C703,

719

1400240

VR604,

605

S.F.

50k

920142

10uF/16V

C511-513,

516,

705, 707,

20024

VR701

ROT

20k

170517

713

VR702

S.F.

10k

1422191

10uF/25V

C712

20037

10uF/160V

C731

170608

Miscellaneous

22uF/16V

C706

20025

CD501

D.C.

Cord

|G060401

170316

22uF/63V

C602

170609

CD601

D.I.N.

Cord

8GE

70001

170317

33uF/10V

C710

170610

F502

3.15A

(T)

Fuse

88020

47uF/16V

C720

1400244

F503

2A

(T)

Fuse

1400253

100uF/25V

C515

800370

TH701

Thermistor

SDT-250S

170635

220uF/10V

C709

170611

Vv701

C.R.T.310GNB31_

170507

220uF/16V

C727,

728,

732

20029

=y

4

1000uF/10V.

{C711

800372

3300uF/25V.

|C510

170612

ee

6V

|

C509,

514

170613

Polystyrene

Capacitors

(All

50V.

D.C.

W.)

0.0047uF

C715

170437

0.0068uF

C714

170614

0.0082uF

C723

170615

0.01UF

C718

170439

0.022uF

C721

170616

0.033uF

C725

170617

0.047

uF

C701,

702,

708,

716

170422

0.082uF

C722

170618

21

101006

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22

CTM640

ELECTRICAL

PARTS

LIST

Circuit

Reference

Carbon

Film

Resistors

(all

/4W

unless

otherwise

shown)

Circuit

Reference

Part

No.

Metal

Oxide

Resistors

1000hm

R810,

901-903

10032

1200hm/1W_,

R449

170405

2200hm

R407,

416

10040

1kohm/1W

R503

170406

2700hm

R807,

811,814

10042

3k90hm/1W

|

R505

170407

3300hm

R401,

404,

422

10044

15kohm/1W

_ |

R805,

812

170408

3900hm

R414

10046

0.220hm/2W_

|

R513

170409

4700hm

R505,

510

10048

150hm/2W

R512

170410

1kohm

R411,

423,

432,

519,

815,

10061

330hm/2W

R509

170411

816

820hm/2W

R520

170412

1k50hm

R420,

421,

441

10065

1000hm/2W__|

R433

170413

1k80hm

R402,

403,

442

10067

3k30hm/2W

_

|

R427

170414

2k20hm

R410

10069

6k8ohm/2W

|

R405

170415

2k70hm

R904-906

10068

1ohm/3W

R502

170416

4k7ohm

R426,

518

10077

—_____-_-—

:

6k80hm

R415

10081

Electrolytic

Capacitors

8k20hm

R406,

418,

419

10083

1uF/50V

C414

20062

10kohm

R424,

428,

429

10085

1uF/160V

C419

1422151

12kohm

R409

10087

1uF/250V

C506

1422152

15kohm

R431,

450

10089

4.7uF/50V

C407,

420

1400240

27kohm

R425

10095

10uF/16V

C520

20024

39kohm

R440

10099

22uF/10V

C437

170418

47kohm

R412

10101

22uF/250V

C430

170419

56kohm

R417

10103

47uF/10V

C436

170420

82kohm

R430,

439

10107

47uF/16V

C405,

418

1400244

180kohm

R408

10115

47uF/50V

C512

170421

220kohm

R413

10117

47uF/160V

C401

170422

270kohm

R504

10119

100uF/16V

C412

20028

680kohm

R451

10129

100uF/35V

C425

1422157

Johm2/%2W

|

R443

170401

100uF/160V

|

C515

1400246

4700hm/2W

|

R445

1422125

100uF/400V_

|

C505

170423

6800hm/12W

|

R447

809223

220uF/35V

C507

20055

1kohm/2W

|

R514-517

1400165

470uF/10V

C518

170424

1k50hm/2W

|

R448

1422126

470uF/25V

C435,

519

20044

2k20hm/2W

|

R446

170402

470uF/35V

C402

1422262

2k70hm/2W_

|

R802-804

1400166

1000uF/25V

|

C424

170425

180kohm/12W

|

R506,

507

170403

-

1Mohm

R801

1400171

poranile

Capacitors

;

22pF/500V

C416

1400217

Fuse

Type

Resistors

100pF/S00V_

|

C423

1400218

1ohm/%™W

R521

809252

130pF

C806

170426

8.20hm/VaW

R444

170404

180pF/500V

|

C403

170427

|

100hm/Vaw

R511

809256

240pF

C804

170428

0.820hm/1W_

|

R438

1422141

270pF/2kV

C432

170429

2.20hm/1W

R435,

437

1400184

330pF

C803,

807

1422255

-

560pF/500V_

|

C417

1400220

Cement

Resistors

680pF

C802

1400213

5.60hm/5W

R501

1422138

2200pF/4kV

|

C513

170430

150hm/7W

R436

170417

0.001uF/500V

|

C516

170431

0.001uF/2kV

|

C511,

801

1422147

0.0015uF/2kV

|

C510,

514

170432

0.0022uF/2kV

|

C502-504

1400223

0.0047

uF

C508,

509

170433

CTM640

ALIGNMENT

INSTRUCTIONS

|

runction

[signauin

[|

signatour_

[|

metHoD

|

ReMARKS

Black

and

White

Monitor

Screen.

1.

Turn

R

& B

Drive

Controls

VR804

&

VR805

fully

Monitor

connected

to

CPC464.

Tracking.

counterclockwise.

2.

Turn

R,

G

&

B

Bias

Controls

VR801,

802,

803

fully

counterclockwise.

3.

Set

Ser.

Nor.

Switch

to

Ser.

position.

Monitor

Screen.

Monitor

Oscilloscope.

1.

Adjust

120V

at

the

collector

of

Q802

with

Brightness

Control

on

the

Oscilloscope.

2.

Rotate

the

screen

control

to

fully

counterclockwise

&

bring

it

back

to

obtain

a

dim

line

of

one

prominent

colour.

3.

Rotate

the

other

two

colours

till

a

dim

white

line

is

obtained.

If

required,

adjust

the

colour

4.

Bring

Ser.

Nor.

Switch

to

Nor.

position.

control.

Black

&

White

Tracking.

Monitor

connected

to

CPC464.

If

no

satisfactory

results

repeat

step

2.

3.

Vertical

Size.

Program

the

paper

Adjust

VR406

to

obtain

paper

edge

to

be

145mm.

Use

non

magnetic

ruler.

edge.

§:

Focus

Adjustment.

Program

the

paper

Monitor

Screen.

Adjust

Focus

Control

on

the

Flyback

Tx.

for

maximum

|

Brightness

&

Contrast

controls

edge.

definition

&

details.

set

to

normal

viewing.

Connect

A.V.O.

across

C518

&

adjust

VR5SO1

to

obtain

5V

exactly.

This

adjustment

(6)

should

not

be

disturbed

under

normal

conditions.

7.

Sub

Brightness

Switch

on

the

Monitor.

AN.O.

Meter.

Connect

A.V.O.

to

collector

of

Q802.

Adjust

VR402

Control.

to

read

120V.

Sub

H.

Hold

&

H.

Hold

Adjustment.

Keep

Brightness

Control

to

maximum

position.

Read

the

Meter

across

CRT

Heater

&

Earth.

eal

5V

Adjustment

Switch

on

the

Monitor.

AVO

Meter.

Switch

on

the

Monitor.

Frequency

Counter.

Rotate

H.

Hold

fully

counterclockwise.

1.

Adjust

VR404

to

read

14500Hz.

2.

Adjust

VR403

to

read

15625Hz.

23

AMSTRAD CPC464 User manual

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