Commodore 1084S-P1 Manual de usuario

Produced

By:

Commodore

International

Spare

Parts

GmbH

Braunschweig,

West

Germany

SERVICE

MANUAL

1084S-P1

PAL

VERSION

SEPTEMBER,

1990

PN-314688-01

105%

INTERNATIONAL

EDITION

COMMODORE

‘“‘INTERNATIONAL

EDITION’?

SERVICE

MANUALS

CON-

TAIN

PART

NUMBER

INFORMATION

WHICH

MAY

VARY

ACCORDING

COUNTRY.

SOME

PARTS

MAY

NOT

AVAILABLE

ALL

COUNTRIES.

TECHNICAL

DATA

General

mains

voltage

mains

frequency

power

consumption

Picturetube

size

deflection

angle

EHT

slot

triplet

pitch

type

Video

vertical

frequency

horizontal

frequency

bandwidth

characters

Audio

joudspeaker

output

power

REMARKS

220-240

(10%)

14”

90°

25KV

0.42

M34EAQ10X

(47-62,5

Hz)

15625

(+60

Hz)

2000

160/1

W/3"

1084S-P1

SERVICE

MANUAL

The

direct

voltages

indicated

the

circuit

diagram

are

average

voltages.

They

have

been

measured

under

the

following

conditions:

Contrast

and

brightness

minimum.

The

oscillograms

have

been

measured

under

the

following

conditions:

Signal

from

RGB

pattern

generator

(SBC

522)

colour

bar

pattern.

Adjust

brightness

and

contrast

for

mechanical

mid-position

(click

position).

WARNING

All

ICs

and

many

other

semi-conductors

are

susceptible

electrostatic

discharges

(ESD).

ESD

Careless

handling

during

repair

can

reduce

life

drastically.

When

repairing,

make

sure

that

you

are

connected

with

the

same

potential

the

mass

the

set

via

wrist

wrap

with

resistance.

Keep

conponents

and

tools

also

this

potential.

Ate

10848S-P1

SERVICE

MANUAL

Headphones

connection

"GREEN”

switch

Mains

voltage

connector

RGB

ANALOG/TTL

switch

"D”

SHELL

connector

RGB/CVBS,

LCA

switch

LCA/CVBS

switch

Luminance/CVBS

input

Chrominance

input

AUDIO-L

input

AUDIO-R

input

O00

WEFT

CHANNEL

FIGHT

CHANNEL

CABINET

100

150

151

102

103

104

OPERATING

PART

CONNECTION

PART

gerpeeolt)

ee:

108

109

CRT

PANEL

1084S-P1

SERVICE

MANUAL

Cabinet

parts

100

3138

107

70460

101

3138

107

70440

102

3138

104

12540

103

3138

104

12500

104

4822

417

50231

105

3138

107

70450

106

3138

104

12520

107

3138

104

12620

108

4822

535

91695

105

4822

410

60444

General

electrical

parts

150

4822

131

20279

151

4822

157

60478

152

4822

240

30296

Accessories

4822

321

10657

4822

154

50148

4822

154

50149

4822

321

60297

4822

154

50147

Mechnical

parts

200

4822

212

23316

201

4822

265

30784

202

4822

265

30783

203

4822

255

70216

Back

cover

Front

Foot

Stand

Lock

Lid

Knob

(5x)

Push

button

Adjust

rod

(3x)

Push

button

(3x)

Picture

tube

(type

M34EAQ01X+AT1

460)

Degaussing

coil

Loudspeaker

mains

cable

Interface

cable

pole

"D"

SHELL

pole

"D”

SHELL)

Interface

cable

DIN-3RCA)

Interface

cable

RCA-2RCA)

Interface

cable

pole

"D”

SHELL-23

pole

"D”

SHELL)

CRT

panel

complete

Socket

pins)

Socket

pins)

Socket

for

CRT

CAUTION

Safety

requirements

stipulate

that,

during

repair,

the

set

shouid

restored

its

original

state

and

that

parts,

indentical

the

specified

ones,

should

applied.

For

safety

reasons,

the

parts

provided

with

the

sign

should

replaced

identical

parts

(for

code

numbers

see

electrical

parts

lists.

avoid

damages

ICs

and

transistors,

flash-over

the

high-tension

should

avoided.

careful

when

performing

measurements

the

high-tension

section

and

the

picture

tube.

Never

change

parts

when

the

set

still

switched

on.

Safety

goggles

must

worn

during

replacement

the

picture

tube.

ELECTRICAL

SETTINGS

THE

CHASSIS

1.1

+128V

supply

voltage(3414)

Apply

video

signal

the

monitor.

Set

volume

control

3295,

brightness

contro!

3662

and

contrast

control

3658

minimum.

Set

trimrhing

potentiometer

3414

mid—position.

(This

presetting).

Connect

voitmeter

junction

resistor

3520

and

diode

6453.

Switch

monitor.

With

trimming

potentiometer

3414

set

the

voltage

junction

3524/6453

128V.

1.2

Horizontalsynchronisation

(3257)

Apply

video

signal

(cross—hatcn

pattern)

the

monitor.

Short

capacitor

2270.

(This

capacitor

connected

7270.)

With

trimming

potentiometer

3257

adjust

the

picture

that

straight.

Remove

the

short-circuit

2270.

1.3

Picture

positionsettings

General:

For

the

following

settings

apply

video

signal

(cross—hatch

pattern)

the

monitor.

1.3.1

East-west

correction

(3537)

With

potentiometer

3537

make

the

vertical

lines

the

left

and

right-hand

side

the

screen

straight

possible.

1.3.2

Picture

width

(3534)

With

potentiometer

3534

set

the

picture

width

for

blocks

260

mm.

1.3.3

Horizontal

picture

centering

(3264)

With

potentiometer

3264

set

the

correct

horizontal

centering.

1.3.4

Vertical

picture

centering

(3583)

With

potentiometer

3583

set

the

correct

vertical

picture

centering.

1.3.5

Picture

height

(3550)

With

potentiometer

3550

set

the

picture

height

for

blocks

186

mm.

1.3.6.

Vertical

linearity

(3573)

Adjust

the

correct

vertical

linearity

with

Pre-set

potentiometer

3573

necessary

repeat

1.3.5

and

1.3.6.

1084S-P1

SERVICE

MANUAL

1.4

Setting

of:

®@

VG2

(bottom

knob

the

line

output

transformer)

cut-off

points

the

picture

tube

(3107,

3117

and

3127)

white

"D”

(3671,

3680)

Set

the

brightness

1/4

its

range

and

set

the

contrast

minimum.

Set

the

potentiometers

3107, 3117,

3127,

3671

and

3680

mechanical

mid-position.

Set

VG2

potentiometer

minimum.

Set

the

signal

generator

“pur”

position

and

introduce

the

respective

colours

red,

green

and

blue.

Using

potentiometers

3107,

3117

and

3127

with

the

corresponding

colour

pattern,

set

the

voltage

the

picture

tube

pins

and

100V.

Apply

white

frame

and

adjust

the

VG2

potentiometer

that

any

colour

among

red,

green

blue

becomes

visible.

Set

the

pattern

generator

purity

with

the

colour

that

was

first

visible.

Reset

VG2

potentiometer

just

visible

light.

Adjust

the

two

remaining

colours

with

their

corresponding

purity

colour

the

same

light

output

using

potentiometers

3107,

3117

3127.

Return

the

signal

generator

white

frame

and

adjust

the

potentiometers

3107,

3117

and

3127

that

optimum

background

colour

obtained.

Using

potentiometers

3671

and

3680

(with

white

frame)

adjust

the

background

colour

that

minimum

brightness

and

maximum

brightness

the

background

colour

the

same.

1.5

Focusing

(top

knob

line

outputtransformer)

Apply

white

pattern

monitor.

Adjust

focusing

that

the

picture

2/3

the

diagonal

lines

(counting

from

center

four

corners)

the

displayed

screen

sharp

possible.

1.6

Subcarrier

oscillator(2613)

—

Apply

colour

bar

pattern

monitor.

Connect

4700

resistor

between

point

7610

and

earth.

Adjust

2613

that

the

colour

picture

the

screen

stationary.

—

Remove

the

470Q

resistor.

1.7

PAL

delay

line

(3619,

5632)

Apply

DEM

pattern

from

pattern

generator

the

monitor.

Set

brightness

control

3662,

contrast

control

3658

and

colour

saturation

control

3654

3/4

the

range.

Adjust

3619

that

the

"venetian

blinds”

the

third

bar

disappear.

Then

adjust

5632

until

the

"venetian

blinds”

the

first

and

fourth

bar

disappear.

Readjust

3619

described

above.

1.8

Chrominance

suppression(5605)

Apply

colour

bar

pattern

the

monitor.

Connect

oscilloscope

7640.

Set

5605

that

the

chrominance

signal

minimum.

(The

chrominance

signal

superimposed

the

grey

steps

the

luminance

signal).

1.9

Audio

balance

(3298)

Apply

sinusoidal

signal

177mVrms

(1KHz)

both

audio

inputs

L/R.

Set

volume

control

mid-position.

Replace

the

two

loudspeakers

with

16Q

resistor.

Set

3298

that

the

output

level

both

16Q

resistors.is

the

same.

eee

1084S-P1

SERVICE

MANUAL

LOCATION

ADJUSTING

COMPONENTS

CRT

PANEL

REFERENCE

;

13.3

MAIN

PANEL

pee

BREEN

ACPHONE

MUR

SWITCH

“13.4

13.2

PICTURE

SETTINGS

Remarks:

The

following

adjustments

only

apply

monitors

which

are

fitted

with

replaceable

deflection

unit.

case

combi

tube

replacement,

picture

settings

required

because

has

been

done

factory

already

The

colour

purity

and

convergence

adjustments

described

hereafter

need

only

carried

out

completely

new

setting

required

new

picture

tube

has

been

fitted.

other

cases,

for

example

after

replacing

the

deflection

unit,

will

not

usually

necessary

remove

the

rubber

wedges

figure

3).

Corrections

means

the

multi-pole

unit

will

then

suffice.

Focusing

adjustment

described

item

1.5

must

done

prior

picture

settings.

2.1

Colourpurity,

see

figure

Unscrew

the

fixing

screw

"F”

the

deflection

unit.

Move

the

deflection

unit

and

remove

the

three

rubber

wedges

"G".

Move

the

deflection

unit

forward

far

possible

against

the

glass

the

picture

tube

cone

and

tighten

fixing

screw

"F”

that

the

deflection

unit

can

only

shifted

slightly.

Place

the

multi-pole

unit

the

position

drawn:

tighten

screw

A”

and

turn

locking

ring

"B”

anticlockwise.

Position

the

monitor

face

east

west

and

switch

on.

Apply

cross—hatch

pattern

and

set

the

brightness

control

maximum.

Allow

the

monitor

warm

for

ten

minutes.

Adjust

the

static

convergence

using

tags

the

red

and

green

patterns

are

placed

top

each

other

the

centre

the

screen.

Switch

the

blue

gun

connecting

resistor

3112

back

its

orginal

position

and

tighten

ring

"B”.

PURITY

soot

POLE

{E)

-FAROREINHETT

PUREZZA

COLORE

2.3

Dynamicconvergence

Remark:

The

dynamic

convergence

achieved

tilting

the

deflection

unit

vertically

and

horizontally.

order

fix

the

deflection

unit

the

right

position,

three

rubber

wedges

are

fitted

between

the

glass

the

picture

tube

cone

and

the

deflection

unit,

shown

fig.

5d.

Two

wedge

thicknesses

are

available,

one

thick,

code

number

4822

462

40356

and

the

other

thick,

code

number

4822

462

40357.

First

check

the

colour

purity

and

the

static

convergence.

—

Apply

cross—hatch

pattern

and

switch

off

the

green

gun

disconnecting

resistor

3122.

Eliminate

the

crossing

the

central

horizontal

blue

and

red

line

and

the

crossing

the

central

vertical

blue

and

red

line

vertically

tilting

the

deflection

unit.

the

deflection

unit

the

correct

position,

then

place

rubber

wedge

without

removing

the

paper

strip,

the

top

(figure

4a)

the

bottom

(figure

5a).

6-8

-Y-¥

Fig.

10848S-P1

SERVICE

MANUAL

Figure

applies

when

the

unit

tilted

upwards

and

figure

applies

when

the

unit

tilted

downwards.

Through

the

horizontal

tilting

the

deflection

unit,

both

the

horizontal

blue

and

red

lines

the

upper

and

lower

halves

the

picture

and

the

vertical

blue

and

red

lines

the

left

and

right-hand

side

the

picture

are

placed

top

each

other.

the

deflection

unit_is

the

correct

position,

then

place

the

wedges

and

remove

the

paper

strips

and

formly

press

the

adhesive

side

these

wedges

against

the

glass

the

picture

tubes

shown

figure

5b.

Now

place

wedge

shown

figure

5c,remove

the

paper

strip

and

firmly

press

the

adhesive

side

this

wedge

against

the

glass

the

picture

tube

cone.

Remove

wedge

that

the

situation

according

figure

arises.

Switch

the

green

gun

connecting

resistor

3122

back

its

original

position.

Fig.

1084S-P1

SERVICE

MANUAL

WIRING

DIAGRAM

‘

DEGAUSING

COIL

EARPHONE

PANEL

BN=

SROWN

YELLOW

MAIN

CHASSIS

PANEL

Mechanicai

parts

300

4822

390

20011

Silicon

grease

301

4822

265

30375

Connector

302

4822

492

62076

Spring

303

4822

255

40893

Insulation

plate

304

4822

390

20011

Silicon

grease

305

4822

390

20011

Silicon

grease

306

4822

492

60063

Fuse

holder

307

4822

267

40646

Socket

308

4822

276

12445

Power

switch

(SK1)

309

4822

256

91564

Holder

310

4822

410

60456

Power

push

button

311

4822

265

30752

Mains

socket

312

4822

276

12677

Switch

(TTL/analog,

SK4)

313

4822

267

40893

"D”

SHELL

socket

(BU3)

314

4822

276

15505

Switch

(RGB/CVBS,

SK2)

315

4822

276

11505

Switch

(LCA/CVBS,

SK5)

316

4822

267

40894

Socket

(BU1,

BU2,

BU4,

BUS)

317

4822

390

20011

Silicon

grease

318

4822

265

20235

Connector

319

4822

276

11505

Switch

(SK3)

320

4822

265

30408

Connector

321

4822

390

20011

Silicon

grease

4822

535

30095

EYE

LET

(1,89x0,18x2,29)

4822

535

30096

EYE

LET

(1,52x0,18x2,23)

LED

PANEL

4822

212

23302

LED

panel

complete

ear

3460

4822

11652391

1K0,5W5%

iad

6460

482213081701

LEO

GREEN

HEADPHONE

PANEL

4822

212

23312

Headphone

panel

complete

4822

267

31144

Socket

for

headphone

4822

265

30778

Connector

assy

2296

3296 4822

116

52389

10002

0.5W

3297 4822

116

52389

1002

0.5W

4822

124

22681

ELCO

47pF

16V

20%

1084S-P

SERVICE

MANUAL

MAIN

CHASSIS

;

—tt

gees

eee

“Ta

321

;

300

—+

icp

Seen

—

319

301

aaa

302

———

318

303

—-+!

304

—+

—

317

lac

‘

305

307

308

nan

eee

309

aaae

S310).311

S12:

313-374

315.376

HEADPHONE

PANEL

Safety

regulations

require

that

the set

restored

its

original

conditton

and

that

parts

which

are

identical

with

those

specified

used.

“

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