AMSTRAD CPC6128 Manual de usuario

£8.00

PRICE

CONTENTS

Page

Safety

Test

Keyboard

Exploded

View

and

Parts

List

CPC6128

Basic

Hardware

Analysis

Function

Diagrams

Function

Diagrams

Software

Errors

Diagnostic

Flow

Chart

8,9,10,11

Alignment

Checks

12,13,14,15

CPC6128

Main

PCB

16,17,18

CPC6128

CPU

Circuit

Diagram

19,20

Electrical

Parts

List

GT65

Exploded

View

and

Cabinet

Parts

List

GT65

Circuit

Diagram

and

Voltages

GT65

Main

PCB

and

Alignment

Instructions

GT65

Electrical

Parts

List

CTM644

Cabinet

Drawing

and

Electrical

Parts

List

CTM644

Electrical

Parts

List

and

Alignment

Instructions

CTM644

Electrical

Parts

List

and

Voltages

CTM644

Circuit

Diagram

29,30

Main

PCB

31,32

Interface

Circuit

Diagram

33,34

Disc

Control

Circuit

Diagram

35,36

Cassette

Control

Circuit

Diagram

Mechanism

and

Mechanical

Replacements

Technical

Specification

Back page

SAFETY

TEST

All

Monitors

are

safety

tested

the

following

specifications.

1).

Flash

Test

3kV

between

the

live

and

neutral

the

mains

lead

joined

together

and

ALL

accessible

metal

points

the

exterior

the

set.

2).

Insulation

Resistance

Test

between

the

live

and

neutral

the

mains

lead

joined

together

and

ALL

accessible

metal

points

the

exterior

the

set

show

resistance

least

4Mohm.

after

servicing

there

any

doubt

about

continued

electrical

safety

the

above

tests

should

carried

out.

AMSTRAD

CONSUMER

ELECTRONICS

PLC

BRENTWOOD

HOUSE,

169

KINGS

ROAD,

BRENTWOOD,

ESSEX

CM14

4EF.

Telephone:

Brentwood

(0277)

228888.

Telex:

995417

AMSELE

KEYBOARD

EXPLODED

VIEW

KEYBOARD

PARTS

LIST

Cabinet

Top

Assembly

Frame

FDD

Knob

Volume

Cabinet

Bottom

Keyboard

Assembly

ESU-244

Compact

Floppy

Disc

Drive

EME-155

Volume

Rotary

K121LOZOT-20KB

Jack

RCA

3.5

HSJ1061-01-440

User

Port

Socket

HXC0730-01-010

Jack

DIN

TCS4450-01-101

Jack

HEC0470-01-630

Jack

DIN

TCS4460-01-1011

Cord

14550401

Relay

G4S-1112P-1-B-19

Cord

Connector

8W6Q004A

Speaker

CO40K01K2451

170855

170856

170806

170857

170858

190005

170807

170022

170023

170850

170024

170025

170822

170123

170862

170124

oOON

Onhwan—

-------@y

CONNECT

240V

MAINS

CPC6128

—

BASIC

HARDWARE

ANALYSIS

RED

LED

LIGHTS

REPLACE

MAINS

FUSE

CHECK

FOR

FAULTY

CABLE

PLUG

ASSY

FROM

MONITOR)

CHECK

INTERNAL

FAULTY

LED

pec

aed

BROKEN

PCB

TRACK

JOINTS

FAULTY

CONNECTER

CHECK

KEYBOARD

PCB

FOR

SIGNS

ABUSE:

CRACKS

LIQUID

SPILLAGE

DISTORTED

MOUNTING

CHECK

CONNECTOR

LEAD

AND

TERMINATION

TEST

SWITCH

COMPUTER

KEYBOARD

UNIT

REMEMBER

TURN

BRIGHTNESS

UP!

FAULTY

SWITCH

RGB

VIDEO

ANY

YES

CONNECTOR

PICTURE

INSERTED.

ALL

CHECK

UNIT

STILL

TRY

KEYBOARD

REPLACE

FAULTLY

SEEK

DISC

ANOTHER

SPECIALIST

CONNECTOR

DISC

ADVICE

IMPROVEMENT

STILL

NOTHING

FAULTY

AUDIO

AMP

SPEAKER

FAULTY

VOLUME

CONTROL

FAULTY

AUDIO

CONNECTOR

PLUG

/SOCKET

FAULTY

AY-3-8192

SOUND

SEE

DISC

FLOW

CHARi

Full

diagnostic

tests

the

C.P.U.

can

carried

out

using

the

Amstrad

RP2

Test

Please

contact

Amstrad

PLC

for

information

same.

FAULTY

VIDEO

CONNECTOR

FAULTY

CABLE

ASSY

FAULTY

ULA

FAULTY

PCB

CHECK

FAULTY

MONITOR

CABLE

TERMINATION

INTERNAL

CONNECTORS

BRIGHTNESS

CONTROL

FAULTY

ULA

Z80A

6845

CRYSTAL

RAM

Pack.

FUNCTION

DIAGRAMS

ICil4

Veo

5D.

OUTPUT

2D 20

CONROL

sane

ICi04.105

STROBE

16109.19

Yoo.

SELECT

PATA

INPUTS

OUTP

2C3 202

2Cl

200

——

bee

ic2_

tcl

ico

ty.

TTT

lel

OBE

—_______.

TP,

SELECT

DATA

INPUTS

UTED

STR

INPUTS

OUTPUTS

{clot

Veo

»D

BCD

-TO-DECIMAL

23456789

OUTPUTS

GND

1Ci06

vec

7D 7Q

6a 6D

CLOCK

CLEAR

2D 28

4D 4@

ICS

Veo

lyt

2Ad

1¥2

2A3

1Y3

2A2

(Yd

2Al

1A]

2¥4

1A2

2Y3

1A2

2¥2

1A4

2Y!

GND

(CHO

Veo

3A BY

GND

ICH2

Voc

4Y 3B

2A 2B

GND

FUNCTION

FOR

MICROCOMPUTER

AND

IC's

IC108

Ic102

ANALOG

CHANNEL

TEST

Vee

ANALOG

CHANNEL

ANALOG

CHANNAL

Vss

1047

10A6

10A5

10A4

10A3

1042

IOA}

10A0

CPC6128

FUNCTION

DIAGRAMS

107

{Cif

PA3

PAG

Av)

|Pae~l2]

Ba=PAS

Ae~{2]

porr

Pay

[3]

pas

PORTA

PAO

37]

P47

Aiaw-[4

READ

WRITE

inputs

[5]

as~(5

mas

APRESS,

“Hecr

~[6

35]

RESET

s-6

Ge]

--45

INPUTS

GND

4\~-Do

{

dav

PorT

{Ai

*|&

DATA

pg-+[8

ADRESS

rol

BUS

INPUTS

(Ao

Ds~*[9

BZ]

~42

~*D3

DATA

pees

BASS

+5v—[i/

{

GND

Dene

Aes:

RORTC

pos

fry

CONTROL

CPU

Pal

RESET

pou

cpu

INT

5|+-BUSRQ

CPU

NMI

[Bus

CONTROL|

NMi

—

WATT

CONTROL

HALT

—

BEAK

PORT

SYSTEM

MREQ

CONTROL]

JORG

+20]

2/]-RD

4 5 6

;

E+

{—§o,

DEL

’

iii

(’

ESC]

|TAB]

Panag

O12

fife

[wl's

e/5

|R|T/G]FiB

Voc

RW/SEEK

LCT/DIR

FR/STP

‘HDL

RDY

WP/TS

FLT/TRo

PSo

PS1

WDA

USo

US,

MFM

vco

RDW

WwCK

Software

Errors

drive

fault

reported

the

fault

may

software

problem.

Before

investigating

the

drive

please

carry

out

the

following

checks

ensure

not

software

problem.

Detection

and

Correction

‘‘Soft

Errors”

Soft

errors

are

usually

caused

the

following

reasons.

Random

external

noise

several

usec

less.

Minute

off-tracking

and

shifting

write

timing

that

are

not

detected

during

the

write

operation

which

can

cause

the

soft

error

during

the

read.

remedy

such

soft

errors,

take

the

following

procedures

the

controller

side.

Repetitive

reading

the

track

times

until

the

data

restored.

When

the

data

not

restored

step

access

the

head

the

adjacent

track

the

same

direction

move

previously,

and

thereafter

return

the

head

the

original

track.

Repeat

the

step

the

data

not

restored

the

above

steps,

the

error

cannot

remedied

Write

Error

When

error

caused

during

the

write

operation,

the

error

usually

detected

during

the

rotation

through

the

read

operation

called

“Write

check”.

correct

the

error,

repeat

the

write

operation

again

and

carry

out

the

Write

check.

the

result

still

incorrect

even

after

the

write

operation

repeated

than

times,

either

the

disc

the

drive

are

working

incorrectly.

find

out

the

trouble

source,

carry

out

the

read

operations

with

another

track.

Should

the

error

still

found,

change

the

disk

and

repeat

the

above

procedures.

Should

error

still

found,

the

drive

should

considered

defective.

the

error

removed,

the

original

disk

must

defective.

Discard

it.

Seek

Error

Step

motor

step

motor

drive

circuit

defective.

The

torque

the

carriage

not

correct.

Restoration

procedures

from

the

seek

error.

Make

the

re-calibration

the

track

OO.

Then,

carry

out

the

re-seek

the

original

track.

Notes:

Always

ensure

the

head

clean.

Index/Sector

Factor

(Ready

Defect)

the

unit

has

Optional

Read

Output

normally

not

ready

until

revolutions

are

made

after

the

disk

insertion.

Diagnostic

Flow

Chart

This

chart

must

used

conjunction

with

the

Alignment

Procedures.

This

chart

for

information

only

and

does

not

guarantee

exact

diagnosis.

For

warranty

purposes

any

faulty

drive

mechanism

must

returned

Amstrad

for

replacement.

Service

Agents

should

not

attempt

any

repairs

the

mechanism

its

P.C.B.

P.No.

30001.

Index

period

200+5msec?

Motor

rotation

Self-read

error?

Read

error

Write

error?

Write

error

Interchange-

Interchangeable

ability

error

lead?

Disk

Drive

O.K.

FLOW

CHART

(cont)

Motor

rotation

Does

motor

rotate?

Adjustable

with

VR201?

Adjust

20041ms

Does

rotate

normally

using

normal

motor?

Replace

motor

Power

supplied?

Check

wiring

Replace

drive

Test

with

disk

EME

CF2

TR39

output

140mVv?

TROO

output

220mvV

Read/write

error

all

tracks?

Read

error

only

specific

track?

Replace

disk

(inspect

drive)

FLOW

CHART

(cont)

head

touch

O.K.

head

output

4mvV

more?

Replace

drive

Seek

error?

TROO

output

normal?

Replace

drive

Replace

drive

Replace

head

assembly

Replace

drive

Replace

TROO

sensor

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