Commodore 1802 User manual

Commodore

Deutschland

Kramer

COMMODORE

1802

COLOR

MONITOR

Technical

Manual

5/87

Materials

for

1802

Manual

NISC

aC:

120V

60Hz

0.8A

60¥

PAL

220V

S0Hz

604

Features

(compared

vith

1702)

Additional

Switches

Video,

Audio

II,

Monochrome

40-column

Monitor

characters

lines

dots)

3-mode

Video

Select

Switch:

Composite

---

For

VIR,

tuner,

home

computer,

etc.

Separate

---

For

C64,

C128

and

TED

series

Monochrome

---

For

home

business

computer

(Green

screen

display

protect

eyes)

The

figure

below

example

connecting

three-jack

cable

the

rear

panel.

Monitor's

Rear

Panel

sparate

Mode:

Commodore

Personal

Computer

Composite

Mode:

Connect

the

cable

VIDEO

and

AUDIO

Monochrome

Mode:

Connect

the

cable

MONOCHROME

and

AUDIO

ITI.

The

jack

end

the

cable

can

plugged

into

the

CHROM

socket

any

mode.

NOTE:

Mode

selected

with

the

3-mode

Video

Select

Switch

the

front

control

panel.

POWER

INDICATOR

ase

“@

PovER

BUTTON

===SSS=*~*~<—*~*s*C*<~*‘«~«t

NSS

“@

FRONT

CONTROL

PANEL

SSC~sYSC(‘~*S

~—

voz

=—=——SS*S*S*S*«@:C«é

nad

contro

kno

~—

VIMEO

MODE

SWITCH

—~—~*|

_‘S-position

slide

svitch

“Gti

Mama

ponteel

each

eee

@conmesst.——=—~—~—~S*S*S*«~Y:~S*~*«

anual

control

nob

seer

———~S~S*S*~S*S*«*SS~S*«Ranua

contro

knc

@vVwis

—~—~—~—~~—~—~—S«SY~Ss«CManual

control

knob

wrest

——~—~—~S~S*~S™S”*WYS«CManad

control

knob

(G)

ab,

SSS

Maneal

conteol

knob:

@mern

t™~—“—sCSsSC“<i=‘“<s

VIDEO

(YELLOW)

=SS*~*~*~d=CS*~S*«sip

ace

"aUDIO

(WHITE)

=—SSS*~*~*~«~wS*~CS*~CS«és

Gack

UNA

(ELLOW).=SSSS*~*~*~*dS*SCS*«<CS~Ssip

Sak

"CHROMA

(RED)

==SSS*~*<“<~*é‘“*!:*S*sp

Sack

"AUDIO

(WHITE),

=——=S*~*~*~S*dYSCS*é*<CS~sip

ake

"MONOCHROME

(VELLOW)=—==S=S*=*d*S*S*«sip

eck

@uuumzSt~—<—S~sSC“‘<‘<‘<C

warranty

(woo)

sst—<~iS*ti<CS*é~S

Ram

useStC<is~—S*S~CS~S

—

powrcop

NOTES:

(@)

V-HEIG

VERTICAL

HEIGHT

(0)

H-POSI

HORIZONTAL

POSITION

(1)

V-HOLD

VERTICAL

HOLD

pecgeenetea

VIDEO

MODE

SWITCH

COLOR

MONO

COMP

SEP

eanaua

Co.)

Iit

@_REAR

PANEL

LUMA

CHROMA

AUDIO

IIl

MONO

CHROME

STUN

WVU

veal

nett.

FRONT

CONTROL

PANEL

eee

CONTENTS

SPECIFICATIONS

oan

IMPORTANT

SERVICE

SAFETY

INFORMATION

INSTALLATION

AND

CHASSIS

PARTS

LOCATION

SERVICE

INSTRUCTIONS

SERVICE

ADJUSTMENT

SERVICE

INFORMATION

Rear

Connection

Panel

PC.B

Board

Layouts

Circuit

Diagram

Block

Diagram

Parts

List

SPECIFICATIONS

SSS

CRT:

13V

inch

90’

in-line,

Vertical

Stripe

Video

band

width:

Composite;

3.5MHz

Phosphor

0.62mm

pitch,

gray

face.

Seprated

video

(luma

Chroma);

input

Signals:

PAL

Composite,

Separated

4.2

MHz

Mono

video,

4.2

MHz

video

(luma

chroma),

Scanning

frequency:

Horizontal;

15.625

KHz

Monochrome

video,

Audio

Vertical;

Audio

II.

Audio:

Input;

1Vpp/47K

Input

level

Comp.,

Video,

Output;

OMA;

Mono;

WWp.p/75_

Dimensions:

356(W)

380(D)

391(H)

Display

size:

247(H)

160(V)

Weight:

Approx.

Colors:

Comp.;

Full

colors

Power

input:

220

VAC,

Resolution:

Comp.;

1,000

characters

Power

consumption:

65W

(40

column

x25

lines)

plat

Stele

*Design,

features

and

specifications

are

subject

change

without

notice.

IMPORTANT

SERVICE

SAFETY

INFORMATION

WARNING:

isolation

transformer

must

used

between

the

supply

and

the

plug

the

color

monitor

before

servicing

testing

performed

this

monitor,

since

part

the

chassis

and

the

heat-sink

are

directly

connected

one

side

the

line

which

could

present

shock

hazard.

The

chassis

the

monitor

should

never

connected

ground.

Before

servicing

performed,

read

all

the

precautions

labelled

the

CRT,

chassis,

and

the

inside

the

cabinet

this

monitor.

X-RAY

RADIATION

WARNING

NOTICE

WARNING:

PARTS

WHICH

INFLUENCE

X-RAY

RADIATION

HORIZONTAL

DEFLECTION.

HIGH

VOLTAGE

CIRCUITS

AND

PICTURE

TUBE,

ETC.,

ARE

INDICATED

(x)

THE

PARTS

LIST

FOR

REPLACEMENT

PURPOSES.

USE

ONLY

THE

TYPE

SHOWN

THE

PARTS

LIST.

PRODUCT

SAFETY

NOTICE

WARNING:

FOR

CONTINUED

SAFETY,

REPLACE

SAFETY

CRITICAL

COMPONENTS

ONLY

WITH

MANUFACTURER

RECOMMENDED

PARTS.

THESE

PARTS

ARE

IDENTIFIED

SHADING

AND

(A\)

THE

SCEMATIC

DIAGRAM.

RRR

NOTICE

D’AVERTISSEMENT

RADIATION

AUX

RAYONS

AVERTISSEMENT:

LES

PIECES

QUI

INFLUENCENT

LES

RAYONS

COURS

DEVIATION

HORIZONTALE,

LES

CIRCUITS

HAUTE

TENSION

TUBE-IMAGE,

ETC.

SONT

ACCOMPAGNEES

D’UN

ASTERIQUE(

DANS

CATALOGUE

PIECES

DETACHEES.

DANS

CAS

D’UN

REMPLACEMENT,

UTILISER

UNIQUEMENT

LES

MODELES

PIECES

INDIQUES

DANS

CATALOGUE

PIECES

DETACHEES.

NOTICE

SECURITE

AVERTISSEMENT:

POUR

ETRE

ASSURE

D'UNE

SEOURI

OPTIMENT

TOUT

MOMENT,

REMPLACER

LES

COM-

POSANTS

CRITIQUES

UNIQUEMENT

PAR

LES

PIECES

RECOMMANDEES

PAR

FABRICANT

LAPPAREIL,

CES

PIECES

SONT

IDENTIFIEES

PAR

UNE

ZONE

D'OMBRE

PAR

SYMBOLE

(4\)

SUR

SCHEMA

MONTAGE.

The

manufacturer's

warranty

and

liabilities

will

void

any

unauthorized

modifications,

alterations

additions

are

made.

For

replacement

purposes,

use

the

same

type

specified

type

wire

and

cable,

ensuring

that

the

positioning

the

wires

followed

(especially

for

HV.

and

power

supply

circuits).

Use

alternative

wiring

positioning

could

result

damage

the

set

shock

fire

hazard.

The

picture

tube

used

this

monitor

employs

integral

implosion

protection

and

should

replaced

with

the

tube

the

same

type

number

for

continued

safety.

When

handling

the

CRT,

shatter-proof

goggles

must

worn

after

completely

discharging

the

high

voltage

circuit.

not

lift

the

picture

tube

the

neck.

eee

PRECAUTION

Potentials

high

24,000

volt!s

are

present

when

the

monitor

operating.

Operation

the

monitor

ourside

the

cabinet

with

the

back

board

removed

involes

shock

hazard

from

the

monitor.

Servicing

should

not

attempted

anyone

who

not

thoroughly

famillar

with

the

precautions

necessary

when

working

high-voltage

equipment.

Always

discharge

the

picture

tube

the

monitor

chassis

keep

off

the

shock

hazard

before

removing

the

anode

cap.

Perfectly

discharge

the

high

potential

the

picture

tube

before

handling

the

tube.

The

picture

tube

highly

evacuated

and

broken,

glass

fragments

will

violently

expelled.

any

FUSE

this

monitor

blown,

replace

with

FUSE

specified

the

chassis

parts

list.

When

replacing

high

wattage

resistor

(oxide

metal

film

resistor)

circuit

board,

keep

the

resistor

10mm

away

from

circuit

board.

Keep

wires

away

from

high

voltage

high

temperature

components.

This

monitor

must

operate

under

AC220

volts,

50Hz,

NEVER

connect

supply

any

other

power

frequency.

OND

INSTALLATION

AND

CHASSIS

PARTS

LOCATION

INSTALLATION

THIS

COLOR

MONITOR

CHASSIS

AND

INITIAL

CHECK

POINTS

When

installing

this

color

monitor

chassis,

first

check

operation

black

and

white

telecast.

Check

and

necessary,

adjust

centering,

size,

and

focus.

Observe

the

picture

for

proper

black

and

white

reproduction

(tracking)

over

all

areas

the

screen.

objectionable

color

shading

fringing

should

evident.

shading

fringing

evident,

degauss

the

monitor.

most

instances

after

installation,

technician

need

only

degauss

the

faceplate

area

and

touch-up

the

static

(center)

con-

vergence.

CHASSIS

PARTS

LOCATION

The

degaussing

coil

should

moved

slowly

around

the

front

faceplate

the

picture

tube

and

around

the

sides

and

front

the

monitor.

The

coil

should

then

withdrawn

slowly

distance

least

six

ten

feet

before

disconnecting

from

the

supply.

This

monitor

chassis

equipped

with

automatic

degaussing

circuit

which

effectively

demagnetizes

the

faceplate

each

time

the

monitor

switched

after

having

been

OFF

for

least

ten

minutes.

Note:

See

‘SERVICE

ADJUSTMENT’

page

for

details

adjusting

procedures.

Focus

ADJ.

Screen

ADJ.

SIGNAL

INPUT

PANEL

CONTRAST

BRIGHT

2nd

ANODE

CAP

COLOR

MODE

SELECT

SW.

VOUUME

CRT

SOCKET

POWER

CORD

Fig.

sw701

Color

Bright

Contrast

1601

R509

R233

R220

Input

signal

DELAY

LINE

R997

DLS501

Sub

Bright

ces)

CHROHA

AMPLITUDE

R507

R409

HOLD

[5]

t02

4PC

Adj

[0]

1301

——

R309

R522

ess)

COLOR

SYNC

Q402

R418

C417

C426

R411

)

V-CENTER

creer

“R359

___|

TSW-4204

T801

L»

Focus

Adj

Screen

Adj

Nonisolation

Isolation

Ree

(CM-146

MAIN

BOARD)

R565

BIAS

R572

BIAS

R578

BIAS

R446

DRIVE

R580

DRIVE

NECK

BOARD

SERVICE

INSTRUCTIONS

hon

CHASSIS

REMOVAL

(SEE

FIGS.

3/4)

Remove

the

five

screws

securing

the

rear

cover

the

cabinet.

(See

Fig.

Pull

the

rear

cabinet

about

10cm

the

rear.

Remove

the

rear

cabinet.

Remove

solder

connection

the

black

wire

connecting

CRT

grounding

and

neck

board,

then

remove

the

neck

p.c

board

from

the

picture

tube.

(See

Fig.

Remove

the

second

anode

cap.

Remove

five

Screws

Fig.

MAIN

CHASSIS

SERVICING

Remove

the

rear

cabinet.

Repairing

main

chassis

can

done

easily,

stood

shown

Fig.

Remove

the

connectors

follows:

Deflection

yoke

connector

Degaussing

coil

connector

Speaker

connector

Remove

the

two

screws

securing

the

power

switch.

Take

the

chassis

out

the

cabinet.

install

the

chassis,

repeat

the

above

procedure

reverse

order.

Remove

Second

Anode

Cap

Remove

Solder

Connection

Black

Wire

from

CRT

Ground

Fig.

PICTURE

TUBE

REMOVAL

gash

order

remove

replace

the

picture

tube,

the

chassis

must

first

removed.

Refer

Chassis

Removal

procedure.

After

the

chassis

has

been

removed,

proceed

follows.

Loosen

the

clamping

screws

the

deflection

yoke,

purity

and

static

convergence

magnet,

and

remove

them.

Remove

four

screws

securing

the

picture

tube

the

front

cabinet.

PRECAUTIONS

FOR

REPAIRS

Check

for

bad

contacts

connectors

the

main

board

and

elsewhere

applying

hand

pressure.

Check

power

supply

for

problems-e.g.

blown

fuse,

bad

switch

outlet.

Check

for

intermittents

defective

soldering

the

main

board

striking

the

reverse

side

the

board

gently

with

insulated

bar.

When

soldering

boards,

limit

the

soldering

iron

temperature

500°F

(200°C)

avoid

peeling

the

foil.

When

soldering

transistors

other

semiconductors,

use

tweezers

heat

sink

clip

shown

Fig.

prevent

Soldering

iron

heat

damage.

Shr

(20

thru

40W)

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