Tandy CM-4 Service Manual

TANDY

8

Service

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COLOR

MONITOR

CM-4

Catalog

Number

:

25-1021

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CONTENTS

Page

SPECIFICATIONS

3

IMPORTANT

SERVICE SAFETY

PRECAUTIONS 4

THEORY

OF

OPERATION 6

DISASSEMBLY INSTRUCTIONS

12

BLOCK

DIAGRAM 13

ALIGNMENT

INSTRUCTIONS

14

TROUBLESHOOTING

GUIDE

18

P.C. BOARD (Top and Bottom Views)

CRT Socket PCB

22

LED PCB

23

Main

PCB

23

WIRING

DIAGRAM

AND

PARTS

LOCATION

27

CABINET EXPLODED

VIEW/PARTS

LIST

1.

Cabinet

Exploded View

28

2.

Electrical

Parts List

29

3. Cabinet

Parts

List

39

SCHEMATIC

DIAGRAM

41

WAVEFORMS

44

SEMICONDUCTOR

LEAD

IDENTIFICATION

44

SPECIFICATIONS

Description

Nominal

Limit

1. Power input

AC 120V, 60Hz

2. AC input current 0.75A

+

10%

-30%

3. Input signal

a)

RGB Video RGB

separate

T.T.L.

Level, positive white

2.4

-

5.0Vp-p

~^"~

(default)

b)

Synchronous

"

"

T.T.L.

level,

positive going

(default)

c)

Intensity

T.T.L.

level, positive

going

(default)

4.

Resolution

a)

Horizontal

640 dots

b) Vertical

(non-interlaced)

225 lines

6.

Brightness

30

fl.

min.

(at

intensity

white)

8.

Display color

1

5

colors

9. High

voltage

23 kV/O^A

27.5 kV

maxJOfJK

10. Picture

linearity

a) Horizontal

10%

max.

b) Vertical

10%

max.

11.

Synchronous (Pull in

range)

a)

Horizontal

15.701 kHz

:i>

b)

Vertical

60 Hz

>

12.

Dot

Pitch

0.64 mm

NOTE:

Nominal

specs represent the

design

specs;

all units

should be

able

to

approximate these

—

some

will exceed

and

some

may drop

slightly

below these

specs. Limit

specs

represent the

absolute

worst condition

which still

might

be considered

acceptable; in

no case

should

a

unit

perform

to

less than within any

limit spec.

IMPORTANT

SERVICE

SAFETY PRECAUTIONS

Service

work should

be

performed

only

by

qualified

service technicians

who

are

thoroughly

familiar

with

all

of

the

following safety checks and

servicing

guidelines:

WARNING

1. For

continued

safety,

do

not

attempt

to

modify

the

circuit.

2.

Disconnect the

AC

power

before servicing.

3. Semiconductor

heat

sinks are

potential

shock haz-

ards when

the

chassis

is operating.

SERVICING

THE

HIGH

VOLTAGE

SYSTEM

AND PICTURE TUBE

When

servicing the high

voltage

system,

remove

the

static

charge by connecting a

10k

ohm

resistor

in

series

with

an insulated

wire

(such

as

a test probe)

between the chassis

and the

anode

lead.

(The

AC

line

cord should

be disconnected from

the

AC

outlet.)

1. The picture

tube

in this

display

monitor

employs

in-

tegral implosion

protection.

2. Replace with a

tube

of

the same

type

number

for

continued

safety.

3.

Do

not

lift

the

picture

tube

by the

neck.

4. Handle

the

picture

tube

only

when

wearing

shatter-

proof goggles

and after

discharging

the

high vol-

tage

anode completely.

X-RADIATION

AND

HIGH

VOLTAGE

LIMITS

1.

Be

sure

all

service

personnel are

aware

of the

procedures

and

instructions

covering

X-radiation.

The only

potential

source

of X-ray

in

a

current

solid-

state

display

monitor

is the picture

tube.

However,

the picture tube

does

not

emit

measurable

X-ray

radiation

if the high

voltage

is as

specified

in the

"high-voltage

check"

instructions.

It

is only when high

voltage

is

excessive

that

X-

radiation

is capable of

penetrating

the

shell

of

the

picture

tube, including

the

lead in

glass

material.

The

important

precaution

is

to keep

the

high vol-

tage below

the

maximum

level

specified.

2. It

is essential

that servicemen

have

available

at all

times

an

accurate

high

voltage

meter. The

calibra-

tion

of

this meter

should

be

checked

periodically.

3.

High

voltage

should

always

be kept

at the

rated

value

—

no higher.

Operation

at

higher

voltages

may cause

a failure of

the picture

tube or

high vol-

tage

circuitry

and, also,

under

certain conditions,

may

produce radiation

in excess of

desirable

levels.

4. When the high

voltage

regulator

is

operating proper-

ly

there

is

no

possibility

of

an X-radiation

problem.

Every

time

a

color

chassis

is serviced, the

bright-

ness

should

be

tested

while

monitoring the

high vol-

tage

with

a

meter

to be

certain

that

the high

voltage

does

not

exceed

the specified

value and

that it is

regulating

correctly.

5.

Do

not

use

a

picture

tube other

than that

specified

or make unrecommended

circuit

modifications to

the high

voltage

circuitry.

6.

When

troubleshooting

and taking test measure-

ments on

a

display monitor

with

excessive high vol-

tage, avoid

being

unnecessarily

close

to the

display

monitor. Do

not

operate

the display

monitor longer

than

is necessary

to locate

the

cause

of

excessive

voltage.

BEFORE RETURNING

THE DISPLAY MONITOR

Fire and

Shock

Hazard

Before

returning

the display

monitor

to the

user,

per-

form the

following

safety checks:

1.

Inspect

all

lead dress

to make

certain that

the

leads

are

not

pinched

or that

hardware

is

not

lodged be-

tween the

chassis and

other metal

parts

in the dis-

play

monitor.

2. Inspect

all

protective

devices

such as nonmetallic

control

knobs,

insulating

materials,

cabinet backs,

adjustment

and

compartment

covers

or

shield,

iso-

lation

resistor-capacitor

networks,

mechanical in-

sulators,

etc.

3. To be sure

that

no

shock hazard

exists,

check for

leakage

current in

the following

manner:

•

Plug

the

AC

line

cord

directly

into an 120 volt

AC

outlet. (Do

not

use

an isolation

transformer

for

this

test.)

•

Using two

clip

leads, connect

a 1.5k ohm,

10 watt

resistor paralleled

by a 0.15/iF

capacitor

in

series

with all exposed

metal

cabinet

parts

and a

known

earth

ground,

such

as

electrical

conduit

or electri-

cal ground

connected

to

earth

ground.

•

Use

a

SSVM or

VOM

with

1000 ohms

per-volt

or

higher

sensitivity

to

measure the

AC

voltage drop

across

the resistor.

(See

Figure

1.)

•

Connect

the

resistor connection

to

all

exposed

metal

parts

having

a return path to

the

chassis

(metal

cabinet,

screw

heads,

knobs

and

control

shafts,

escutcheon, etc.) and

measure

the

AC

vol-

tage

drop across

the resistor.

All

checks must

be repeated

with

the

AC line cord

plug

connection reversed.

(If

necessary, a non-

polarized adapter

plug

must

be

used

only for

the pur-

pose

of

completing

these

checks.)

Any

reading

of 0.3 volt

RMS

(this

corresponds

to

0.2

milliamp.

AC.) or

more

is

excessive

and indi-

cates a

potential shock

hazard which must

be cor-

rected

before

returning

the display

monitor to

the

user.

SAFETY

NOTICE

Many

electrical and

mechanical

parts in display

moni-

tors

have special safety-related characteristics.

These

characteristics often

pass

unnoticed and

the protec-

tion

afforded by them cannot necessarily

be

obtained

by

using

replacement

components rated for higher vol-

tage,

wattage,

etc.

Replacement

parts

that

have these

special

safety

characteristics are identified in

this manual; electrical

components

having

such

features

are

identified by a

A

and shaded

in

the Replacement Parts Lists and

Schematic

Diagram. For

continued protection, replace-

ment

parts must

be identicaltothose

used

in the

origi-

nal

circuit. The use

of

a

substitute replacement part

that

does not

have

the same safety characteristics

as

specified

in this service

manual, may create shock,

fire,

X-radiation or other hazards.

TO

EXPOSED

METAL PARTS

CONNECT

TO

KNOWN

EARTH

GROUND

Figure

1. Leakage Current

Test

Circuit

THEORY

OF

OPERATION

1.

RGB

Drive

Circuit

The

RGBI

signals

are applied to

HEX inverter

IC491

used

as

a

buffer). The

outputs of

IC491 are then

ap-

alied

to

IC492

which

is

an

open

collector HEX invert-

er.

The

resistors

tied

to

the

outputs of IC492 are

used

:o

set

the

appropriate

voltage

level

for the color

sig-

nals.

The

signals

are

then applied to

the base

of RGB-

Amp

transistors

Q451,

Q461 and Q471.

The

brightness

and

sub

brightness controls

(R41

7

and

341

6)

are used

to

adjust the

bias of

the

RGB-Amp

tran-

sistors.

These

controls are

connected

to the

base of

Q401

and

Q402.

When the intensity

signal

is

LOW,

transistor

Q421

is

turned

ON.

The

contrast

control

(R422) is used

to

adjust

the con-

trast

between

high

and low intensity color

signals.

2. Video

(RGB) Output {Fig.

2)

An RGB

drive system

is

utilized

in

the

video output

cir-

cuit of

this

unit.

The

function

of

this

circuit

is to

com-

oine

the

color signals and the brightness

signal,

and

amplify them

sufficiently

to

drive

the

cathodes. 1

45V

DC

must

be applied

to

the collectors

of the

output tran-

sistors

(Q851, Q861,

Q871).

When

the horizontal

output circuit is

operating, pulses are

developed

and

fedtothe

1

16V supply

where they are applied

to

a

winding

of the

horizontal output transformer (T602).

This pulsed

DC

voltage

is

then

taken

from terminal (s)

of

T602 and applied

through

D71

7,

and

R865

or

R866

or

R867 to

the

collectors of

Q851,

Q861

andQ871,

respectively.

The brightness

signal

from the

Blanking

(Q402)

is

ap-

plied

to

the emitters of

Q851,

Q861 and

Q871.

C853

and C855

are

peaking capacitors.

Color signals from

the

outputs

of

Q451,

Q461 and

Q471

are

applied

to

the bases of

Q851,

Q861 and

Q871 . The picture

tube

used

in

this

unit

is

a

precision,

inline

gun-type.

The control grid

(G1)

and the

screen

grid

(G2)

are common

with

respect to the red, green

and blue cathodes. Consequently, the

emitter circuits

of Q85

1

, Q86 1

and

Q87

1

are

provided

with bias con-

trols

(R862, R863 and

R864,

respectively)

for picture

tube

cut-off

adjustment. Drive

controls

(R856

and

R858) are provided

in

the emitter circuits

of Q851 and

Q871 for white balance

adjustment.

FROM

EMITTER

>

OF Q451

Q851

RED

OUTPUT

FROM

EMITTER

>

OFQ461

FROM

EMITTER

>

OFQ471

FROM

VIDEO

DRIVE

>

CIRCUIT

<

+145

Figure

2.

Video

Output

Circuit

3,

Vertical

Deflection

Circuit

The

vertical

sync,

signal

with

positive polarity

is ap-

plied

to

pin(7)of

the vertical

and

horizontal

IC

(IC601).

Pin

(8)of

IC601

is connected

to

the vertical oscillator

circuit.

The

frequency of the oscillator can

be

con-

trolled

by the

voltage

of pin

(8)

which

can be varied

by

V.HOLD

VR

(R514).

The

sawtooth signal is

ob-

tained by

the integrating

circuit which

is connected be-

tween

pin

(5)

and pin

Qj)

.

The

oscillator output

is

fed

to the vertical

drive circuit

through a

buffer

circuit.

Its

output, derived

from pin

(2)

,

is

applied to

the

vertical output.

The

sawtooth

wave

is

applied

to

pin

(3)

of

IC601 as

an AC

feedback

signal.

The

emitter circuit of Q501 is controlled by

V-SIZE VR

(R507)

to vary the vertical size of the raster.

The

vertical

linearity

control

(R526) is part of

an

in-

tegrating circuit

which controls the sawtooth

waveform.

4.

Horizontal

Oscillator, AFC

and

Drive Circuit

The

horizontal

sync,

signal

with

positive

polarity is ap-

plied to

pin

(15)

of IC601.

The output

from the fly-back

transformer (T602)

is

in-

tegrated

and

connected

to pin

(^3)

of

IC601 as part

of

the

automatic frequency control circuit.

H.

CENT

control

(R623)

determines

the relative posi-

tion

of

the raster and

picture.

The

horizontal

oscillation

frequency can

be controlled

by H.

HOLD VR

R607

connected

to

pin

(j~2).

The

horizontal frequency is

obtained from pin

\[Q)

of

IC601,

and is

fed

to

the

next

horizontal

drive circuit.

The

pulse-switching

mode of the

driver and

output

stage is a

reverse

polarity

type;

that

is,

when

the

driver

transistor

Q601 is

ON,

the

output

transistor

Q602

is

OFF.

5.

Horizontal Output

and

HV

Rectifier

(Figs.

3-5)

Horizontal drive voltage,

developed at

pin

^6)

of

the

deflection

processor integrated

circuit

(IC601

),

is

am-

plified

through

the horizontal drive

stage

(Q601)

and

coupled to the base

of

the horizontal output

circuit

via

the horizontal drive transformer

(T601 ).

Refer

to

Fig. 3.

The horizontal

output circuit generates the

horizontal

scan and

high voltage

to

be applied to

the picture tube.

The function

of the

horizontal output

stage

(Q602)

is

to

serve

as a

switch for the horizontal

output

circuit.

Refer

to

Fig. 4.

During

the horizontal

scanning

period, Q

operates

(S

1

is

closed,

S2 is open) and the current

is

applied

in

one

direction through the

horizontal coils

of the

deflection

yoke

(LY)

and the

capacitor

(C).

During retrace

time,

Q is inoperative (S 1

is

open, S2 is

closed)

and

the

cur-

rent is applied in the opposite

direction

through

the

damper

diode

(D),

the horizontal

coils of

the

deflection

yoke (LY)

and

the capacitor

(C).

The

high

voltage

required

to

be

applied

to

the

anode

of the picture tube is generated by

boosting

the

pulse

from the collector of Q602

through

T602

during

the

flyback

(retrace) period and applying

this

boosted

pulse

to

a

series of

silicon

rectifiers. Refer

to

Figure 5.

High voltage regulation is accomplished

internally

in

T602.

T601

HORIZ. DRIVE

From

Pin (TS)

^

of

IC601

^

C609

T

I

To

BASE

of

Q602

Q601

HORIZ.

DRIVE

^+12V

Figure

3.

Horizontal

Drive Circuit

Q(S1)

~©

1

DAMPER

DIODE

(S2)T

C

r'COIL)

LY

(DEFLECTION

VCC

(A) (B)

Figure

4. Equivalent

Circuit

of Horizontal

Output

Circuit

I

—

'

'

—

IR71

18V

«

•

*

H

*

>W

C72izt

°714

R717

^T

TO

CRT

SECOND

ANODE

**

TO

CRT

FOCUS

*-

TO

CRT

SCREEN

**

TO ABL

CIRCUIT

145

V

To

Blanking

and

orizontal

AFC

DET.

Circuit

*•

TO CRT Heater

(THIS

AREA

IS

COLD

GROUND)

D713

AAV-

p\

—

f

18V

Figure

5.

Horizontal

Output and

HV

Rectifier

Circuit

6.

High

Voltage Shut-down System

The

shut-down

circuit

prevents

the

high

voltage from

rising above a

preset

level.

Under normal

operating

conditions,

this circuit is

in-

active.

Operation

of

the

protector

circuit depends

upon

a heat-

er

pulse

which

appears at

pin

{3)

of

the horizontal out-

put

transformer

(T602).

It monitors

a

heater pulse

subjected

to

rectification by D603.

Being in

proportion

to

the

voltage of

that heater pulse,

if

the

incoming

high voltage

increases and exceeds its

limit,

the heat-

er pulse

voltage

also

increases. As

a

result,

there is

a

larger voltage

produced to

charge

C617

so

that

its

potential

will eventually

be higher

than

the

voltage

(

+ 22V) of

Zener

diode

(D605)

turning

it

ON.

With

D605

turned

ON,

the

X-ray

protector

(of

IC601

)

oper-

ates

to

stop

the

horizontal

oscillator circuit,

shutting

down the resultant

high

voltage.

FROM

PIN©

OF

T602

/ HEATER

\

\

pulse

;

>

R615

D603

-w

M—

D605

R618

—

^

VA-

R619?

±ZZC617

R6175

-^

77T

Figure

6. High

Voltage

Shut-Down

System

Circuit

R616

^

-AW-(V)

C607

7.

Power

Supply (Figs.

7

—

10)

The

entire

monitor

circuitry

is

protected

by

a

4.0A

fuse

(F701),

located

on the Main Chassis

Board (PCB-A)

that

is connected

to

the

hot side of

the

AC

line

input.

The

secondary

circuit

is

protected

by

a

1.5A

fuse

(F702),

mounted on

PCB-A.

AC

Line voltage

is applied

through

the Line

filter (L702)

to

the

power

ON-OFF

SWITCH

(SW701).

With SW701 set

in the ON position, AC

voltage

is ap-

plied

through

a

Bridge

Rectifier

circuit.

A

conventional type

Automatic Degaussing

circuit,

consisting

of

a

positive coefficient thermistor (PR701

)

in

series

with

the

degaussing coil assembly

(L701

),

is

used.

The

AC

input voltage

is rectified

by

the

Bridge

Rectifi-

er

circuit

(D701

,

D702,

D703,

D704) and then

applied

to the

Regulator

circuit.

A

switching

type

Regulator

cir-

cuit,

utilizing

a

silicon

controlled rectifier

(SCR701),

is

used to

maintain

a constant DC

voltage level

regard-

less

of

fluctuations \n the AC

input

voltage.

The negative

horizontal

pulses

that

are

produced

at

ter-

minal

@of

the

Horizontal Output

transformer

(T602)

are converted

into

a saw

tooth wave by

R713

and

C71 1 which

is

applied

to

the Phase

Detector

circuit

in

the

IC701 (Power Regulator

integrated

circuit)

via

pin

(5)

.

Output from the

Phase

Detector

circuit is

ap-

plied

internally

to

the

SCR

Drive stage

where

it is

am-

plified and

then

utilized as

the

SCR

gate

(timing)

pulse.

Gate

pulse timing is

determined by the

action

of the

Error Amplifier

stage

in

IC701

which is

controlled by

the setting of

the

+116V Adjust

control

(R707).

Filtered DC voltage

derived from the

pulses

produced

at terminals

@

and

@

of

T602

is

used to

turn

OFF

SCR701. If

the AC

input

voltage increases,

the

turn-

on time

of

SCR

701 decreases.

And

if the

AC

input

voltage decreases;

the turn-on

time

of SCR701

in-

creases.

The

+

5.

1

V,

+

1 2V

and

+

1

8V

supplies

are

produced

as

a

result

of rectification

through

D71

3

of the

pulses

developed

at

terminal @of

T602.

R631

D717

F701

L702

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R716

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Figure

7.

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Diagram

of

Power

Supply

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REFERENCE

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9.

Block

Diagram

of

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Circuit

10

AC120V

60Hz

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Figure

10.

Power

Supply

Schematic

DISASSEMBLY

INSTRUCTIONS

Remove

the six

screws

(T) retaining the

rear

cabinet.

Remove

the rear cabinet.

(Figure 1 1A)

Note:

The CRT

must

be

discharged. Refer to

the

high

voltage discharge

procedure

on

page

4.

(1)

Remove the

CRT's

second

anode

cap(2)from

the CRT.

(2)

Remove

the

PCB--B

(CRT

PCS)

lead of

the CRT

grounding

strap.

(Figure

11B)

(3)

Remove the

PCB-B.

(4)

Loosen

the

wire

holder

on

the Flyback

trans-

bracket

and disconnect the connector K.

(Figure 11B)

(5)

Disconnect

the

connectors NA and M on the

PCB-A

(main

PCB-A)

(6)

Loosen

the

wire

holder

fixing

power switch

lead,

CRT

ground lead, RGB

output lead,

Degaussing lead

and

LED

lead. (Figure

1 1B)

(7)

Remove

the

PCB-A

(main PCB)

from the

front

cabinet.

3.

Remove

screw

(5)

for PCB-C the LED and

also

PCB-C

from the

front cabinet.

(Figure 1 1B)

Note: When

servicing,

be

sufficiently careful with

the

control door

because

it

may detach

from

the

cabinet if

it

touches

the

surface

while

the

set

is

inclined toward the front.

Figure

11A

Figure

11B

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13

ALIGNMENT

INSTRUCTIONS

Mote:

This

adjustment

requires

the

connection of

a personal

computer

to

the Monitor.

Although

the

Monitor

is ad-

usted

before

it

Is

delivered, readjustment

may

be

re-

quired

when

the

setting

position

is

changed

or

when

i

component

is replaced.

1.

B+

Power Circuit

Adjustment

(Instrument

in use: a

20

kohm/V

tester)

1)

Be

sure that the

AC line

voltage is

above 1 14V.

2)

Rotate

the B

+ voltage

adjusting control

(R707)

to

provide a

DC

voltage of

1 16V

between

TP91

and

ground.

Mote

1

:

If the AC

line

voltage

is below

1

14V,

the

DC

voltage may

not increase

to 1

1

6V,

but

this

is

not a

problem

related

to

this

adjust-

ment.

If

the value

of

1

16V

DC

is almost

reached, the adjustment

is

enough.

-Mote

2:

Clockwise rotation

of the B+

voltage

ad-

justing control

will

increase

the

B +

power

supply

voltage.

2.

Horizontal Hold Adjustment

(1)

Operate

the computer in

such

a

way

that

the

let-

ters

"H"

cover

the

entire screen

(data display

peri-

od:

44.698

/*S

horizontal, 14.33

mS vertical).

(2)

Adjust the horizontal hold control

(R607) until

the

picture

on

the

screen becomes

still

(synchronized).

(3)

Turn the power

switch on

and off

several

times

to

check that

the

picture

does

not

fluctuate.

3.

Vertical Size Adjustment

(1

)

Operate

the computer in

such

a

way that the

let-

ters "H" cover the

entire screen

(data

display

peri-

od:

44.698

mS

horizontal,

14.33

mS

vertical).

(2)

Adjust the vertical size

control (R507)

so

that

the

heightofthe

displayed pattern

is 170

mm.

4.

Focusing

(1) Operate the

computer to

display

the

alphabetical

characters

on

the screen.

(2) Set

the

brightness control

at

the center

position.

(3)

Rotate

the focus

adjusting control (part

of

T602)

for

the best

focus.

(4)

Change

the

position

of the brightness

control

to

confirm

that

the

picture remains

focused.

5.

High

Voltage

Check

High

voltage

is

not

adjustable

but

must be checked

to

verify

that

the

Monitor

is

operating within

safe

and ef-

ficient

design

limitations

as

specified.

1

.

Operate the display

Monitor

for

at

least

1

5

minutes

at

1 20V

AC

line voltage

with

the computer

display-

ing

high intensity

white

pattern.

2.

Turn

off

Switch

SW851

on

PCB-B.

3. Rotate

the screen

control

(on T602)

to

the

maxi-

mum

(counterclockwise)

end

of

its rotation.

4. Connect

an

accurate,

high-voltage meter

to

the

CRT anode.

Check

that the

reading is approximate-

ly 22.0kV and

23.0kV

(at

beam current).

If a correct

reading

cannot

be

obtained, check

the cir-

cuitry for malfunctioning

components.

On

completion

of

the voltage check, readjust the screen control for

proper

operation as detailed in the "Black

and

White

Tracking"

procedures.

6. Vertical-Linearity

Adjustment

1

.

Operate

the

computer

in such a

way

that the

let-

ters "H" cover

the

entire screen (data display peri-

od: 44.698

/iS

horizontal,

14.33

mS vertical).

2. Adjust

the

V-Lin.

control

(R526)

until the height

of

a character varies

no more than 1

percent from

the

average

character size.

7. X-ray

Protector Circuit

Test

After service

has

been

performed

on

the

horizontal

deflection

system,

the

high

voltage system and

the X-

ray

protector

circuit must

be tested

for

proper

opera-

tion as

follows:

1

.

Apply

1

20VAC,

using

a variac transformer

for ac-

curate

input voltage.

2.

Operate

the

computer

in such

a way that

the

en-

tire

screen displays

a high

intensity

white

signal

(data

display

period:

44.698

/*S

horizontal,

1 4.33

mS

vertical).

3. Check

the voltage of

test

point TP601 .

(Its

voltage

should

be

about

17.5VDC.)

4.

Connect

the

cathode

of

diode D503 and

TP601

through

a 6.8K ohm, 1/2W resistor.

5.

To

start

operation,

remove the resistor

and

touch

the

IC601

(9)

pin-to-chassis ground

with

a short

clip

lead.

(Remove

the short clip

lead

as

soon

as

the

set

operates

again

with

a normal

picture).

6. Connect

the short-clip

lead

between TP602

and

chassis

ground. When

these

points are

connect-

ed,

the

operation

of

the horizontal

osc. must stop.

7.

To

start

operation,

remove

the short-clip

lead when

the set

begins

operating

again

with

a

normal

picture.

8.

If

the operation

of

the horizontal

osc.

does not

stop

in

steps

4

and

6,

the

circuit

must be repaired

be-

fore the

set

is

returned

to

the

customer.

14

8.

Color

Purity

Adjustment

The display

monitor

must

have

been

operating 15

minutes

prior to

this

procedure, and with

the

faceplate

of

the CRT at

room temperature.

The display

monitor

is

equipped with an

automatic degaussing

circuit.

However, if the

CRT

shadow mask

has become

exces-

sively magnetized,

it

may be

necessary

to

degauss

it

with

a

manual

coil.

Do

not switch the

coil

off

while

the

raster shows

any effect

from

the

coil.

1

Check for

the correct location

of

all

neck

compo-

nents. Refer

to Figure 13.

2.

Rough in the

static convergence

at the center of

the CRT,

as

explained

in

the

static

convergence

procedure.

3.

Rotate

the

contrast control

to the

center

of

its

range

and

rotate the brightness

control

to its

max-

imum

clockwise position.

4. To

obtain a

blank raster,

disconnect E

from

PCB-A.

Rotate

the

screen control

(part

of

T602)

clockwise

until

a

normal

raster is

obtained.

5.

Rotate the

red bias

(R862)

and blue

bias (R864)

controls

to the maximum

counterclockwise

po-

sitions.

Rotate

the

green

bias control

(R863) sufficiently

in a

clockwise

direction

to

produce

a

green raster.

6.

Loosen

the deflection

yoke

clamp

screw

and

pull

the deflection yoke as

close

as

possible

to

the pu-

rity and

convergence

magnets

assembly.

7.

Begin

the following

adjustment

with the

tabs

on

the

round

purity

magnet

rings

set together. Initial-

ly, move the

tabs

on the

round

purity magnet

rings

to the

side of

the CRT

neck.

Then, slowly separate

the two

tabs while

at

the

same

time

rotating them

to

adjust for

a

uniform green

vertical

band at the

center

of the CRT

screen.

Refer

to

Figure

12.

8.

Carefully

slide

the

deflection yoke

forward to

achieve

green purity (uniform

green screen).

Note:

Center purity

is obtained

by adjusting the

tabs on

the

round

purity

magnet rings.

Outer edge

purity

is obtained

by sliding

the

deflection

yoke

forward.

Tighten

the deflection yoke

clamp

screw.

9.

Check for

red

and

blue-field

purity

by

reducing the

output of the green bias

control

(R863)

and alter-

nately

increasing the output

of the

red

(R862) and

blue

(R864) bias

controls,

and touch

up the

ad-

justment, if

required.

10.

Reconnect E

to

RCB-A.

11.

Perform

the "Black and

White

Tracking"

procedures.

DEFLECTION

YOKE

CLAMP SCREW

GREEN

RASTER

Figure

12.

Color

Purity

Adjustment

r

PURITY

MAGNETS

FOUR-POLE

CONV.

MAGNETS

SIX-POLE,

CONV.

MAGNETS

45.9mm

(1.807

inches)

DEFLECTION

YOKE

DEFLECTION

YOKE

TILT

ADJUSTMENT

WEDGE

Figure

13.

Picture Tube

Neck Components Location

15

9.

Black

and

White

Tracking

1

Turn

the

screen

control

fully

clockwise.

Turn

the

red,

green

and

blue

bias

controls fully

clockwise.

Set

the

brightness

control

and

the

red

and

blue

drive controls

at the

center

positions.

2. Operate the

computer

in such a way

that

the

en-

tire screen

is

high

intensity

white

(display

period:

44.698

fiS

horizontal, 14.33

mS vertical).

3. Turn off the

switch SW851

4. Rotate the

screen control

counterclockwise

until

a

raster

(either

the

red, green or

blue)

appears

dimly

on

the

screen.

5.

Rotate two

of

the three

bias

controls

counterclock-

wise

until the raster becomes

whitish:

position

ro-

tated

controls

must

be

the

ones

which

control

the

colors

other than

the raster's

colors.

Notes: Adjust R863

and

R864

if

the red

appears.

Adjust R862

and

R864

if

the

green

appears.

Adjust

R862

and

R863 if

the

blue

appears.

6.

Return

switch SW851

to

its

original

position.

7.

Rotate

the

red and

blue

drive

controls

until

the

raster

is white.

8. Set the

brightness

control

at its

maximum

position

and

adjust

the screen

control

until

a

reading

of

3.8V

DC appears

between

TP-402

and

TP-403

(at

both

ends

of R407).

9.

Turn

the

brightness

control in

either

direction

to

check

that

the picture

maintains

a

good

white

balance.

10.

Repeat

steps

3 thru

9 for

readjustment.

10.

Static (Center)

Convergence

(Figs.

13-16)

1.

Switch

the

display monitor

ON

and

allow

it

to

warm

up

15

minutes.

2.

Operate

the computer in

such

a way

that the

en-

tire

screen

is

a

Crosshatch

pattern (display

period:

44.698

fiS

horizontal,

14.33

mS vertical)

on the

center

of

the

CRT screen.

(Fig.

14)

Proceed

as

follows:

a.

Locate the

pair

of

four-pole

magnet

rings.

Ro-

tate

the individual

rings

(change

spacing

be-

tween

tabs)

to

converge

the

vertical

red

and

blue lines.

Rotate

the

pair

of

rings

(maintaining

spacing

between

tabs) to

converge

the

horizon-

tal

red and

blue

lines.

Refer to

Figure

15.

b.

After

completing

red and

blue

center

conver-

gence,

locate the

pair of

six-pole

magnet

rings.

Rotate

the

individual

rings

(change

spacing

be-

tween

tabs)

to

converge

the

vertical

red

and

blue

(magenta)

and

green lines.

Rotate

the

pair

of rings

(maintaining

spacing

between

tabs)

to

converge

the

horizontal

red

and

blue

(magenta)

and

green lines.

Refer

to

Figure

16.

BLUE<^j

\-

4

RED

Figure 15

""iii

—

i—i

—i—

i

—

|

—

I—i

—i—

i

i ii

Horizontal:

12 Lines

Min.

Vertical:

16 Lines Min.

BLUE/-*!

Figure

14. Crosshatch

Pattern

t

GREEN

Figure 16.

Static

(Center)

Convergence

4

16

11.

Dynamic

Convergence

(Figs.

17

—

19)

Dynamic

convergence

(convergence

of

the

three color

fields at the edges

of the CRT screen)

is accomplished

by proper

insertion

and positioning

of three

rubber

wedges

between

the edgeofthe deflection

yoke

and

the funnel

of

the CRT.

This

is accomplished

in the following

manner:

1

Switch the display

monitor

ON

and allow

it

to

warm

up

for 15 minutes.

2.

Apply the Crosshatch pattern (Fig.

14) from the

computer

to

the

display

monitor.

Observe

spacing

between

lines

around the

edges

of the CRT.

3.

Tilt the

deflection

yoke up

and down.

Insert

tilt

ad-

justment wedges

(T) and

(5)

between

the deflec-

tion

yoke and the CRT

until

the

misconvergence

illustrated

in Figure 17

has

been

corrected.

4.

Tilt the deflection

yoke right and

left.

Insert tilt

ad-

justment

wedge

(3)

between the

deflection

yoke

and

the

CRT

until

the

misconvergence

illustrated

in

Figure 18

has

been corrected.

5.

Alternately

change the

spacing

between,

and depth

of

insertion

of, the

three

wedges until

proper

dy-

namic

convergence

is obtained.

6.

Check purity

and

readjust,

if

necessary.

r

GREEN

^r

BLUE-

(RED)

7T"

l^

RED

I—

(BLUE)

/

BLUE(RED).

77

/

GREEN

RED

(BLUE)

Figure

17

/

/(RED)

GRE

RED

L_"

tu

|^_(BLUE)|

GREEN

BLUE

RED)

Figure

18

WEDGE

(2)

DEFLECTION

YOKE

REAR

VIEW

WEDGE(3)

Figure

19. Dynamic Convergence

17

TROUBLESHOOTING

GUIDE

Circuits

checked:

• Power

regulator

circuit

•

Protector

circuit

•

Horizontal

sync

circuit

NO

POWER

Does

150V

appear between

the

anode

of

SCR701 and

ground?

Yes

Connect a

zener

diode (60V)

between

the

gate

of

SCR701

and

T702-to-D716

junction:

connect

the

zener

diode anode to the gate of

SCR701

Is

the power

circuit

activated?

i-

— —

-*

—

—

«

J

»«! D705

1

1

1

Yes

D716

i

i

i

No

Connect

a

resistor

(15W,

50

ohms)

between

TP-91

and

T702-to-D7

16

junction.

Is the horizontal

sync circuit

activated?

No

Yes

Does

18V

appear

between pin(S)of

IC701

and ground?

—

No

Yes

Does

7.8V appear

between

pin(7)of

IC701

and

ground?

—

No

|

R615

D605

)

IC601

R613

t\

Q601

R620

i

Q602

D603

I

D602

JR717

R719

D714i

|R716

D713

|

i

i

i

IC701

R706

*

R707

R709

!

R711 C707

Yes

SCR701

R712

R705

C709

C710

I

J

18

Circuits

Checked:

1.

No raster

appears.

•

Power

circuit

•

Horizontal

sync

circuit

•

Protector

circuit

2. A

high

voltage

develops

but

no

raster

appears.

•

Video

output

circuit

3.

A

high

voltage is

not

developed.

•

High voltage

circuit

NO

RASTER

APPEARS

I

Does

116V

appear

between

TP-91

and

ground?

I

No

Yes

zn

Power/horizontal

sync/protector

circuit

Check

the voltage

level

at

the

collector

of

Q851.

If

the voltage

is

normal, the

voltage

can

be varied

between

140 to

160

with the

brightness

control.

Check

the connections

between the

monitor and

computer.

Proper

CRT

and

its

related

circuits

CRT

R872

J

T602

C859

.

Yes

Defective

Does

the

signal

appear?

No

Input

circuit/

computer

Yes

UUca J.tv

d|J|Jcai

at the

emitter

of

Q402?

No

1

r

V

Input circuit/

computer

G401,G402and

its

related

Circuits

ZY77-

R413

~!

f^Q401

I

Q402

D407

i

I

D408

'

Circuits

Checked:

•

Video

circuit

and

its

related

circuits

NO

PICTURE

APPEARS

Note: If the

picture does

not

appear,

fully

rotate the

brightness

contrast control

clockwise before

inspecting.

Check the video signal

at

the base

of

Q451 with

an

oscilloscope.

Is

the

video

signal

present?

No

Yes

Yes

Check

the video

signal

at

the

base

of Q851

with

an

oscilloscope.

Is

the video

signal

present?

No

Check

Q402 and

its

related

circuits.

i

Check

the video

input

circuit

and

its

related

circuits.

Check Q451,Q851

and

its

related

circuits.

T

l

Q401

|

Q402

I

D407

r

Q451

'

Q851

1

D408

1

R850

"1

I

I

I

I

Input

cable

input

socket

computer

IC491

IC492

IC493

IC494

19

NO

SYNCHRONIZATION CAN

BE

PROVIDED

Circuits

checked:

•

IC601

and

its

related

circuits.

I

IC601,Q423

Both

horizontal

synchronization

obtained.

and vertical

cannot

be

HORIZONTAL

SYNCHRONIZATION

CANNOT BE OBTAINED.

Does

pin

@

of

IC601

have

a saw-

tooth

wave and

sync signal?

X

Yes

1C601

1

R605

I

R606

l

R607

'

I

I

(But

vertical synchroni-

zation

is

normal.)

With

the H-hold

control

adjusted,

does

the horizontal

sync frequency

vary?

No

i

1C6011

1 Q423

'

Yes

1

C606

I

C604

'

I I

No

r

zrr

n

1C601

1

R620

1

I

D602

I

'

R607

'

Q423

I

I

1

VERTICAL

SYNCHRONIZATION

CANNOT BE

OBTAINED

Vertical

sync,

possible

at

all.

r

.._.j

!

IC601

R502

C501

I

1

IC601

R514

C504|

1 1

adjustment

is not

a

(But horizontal

synchronization

is

normal.)

The

vertical sync frequency

car

varied

slightly.

1

—

_±_.

1

1C601

R513

1

R510

R514

1 R511 C503

1

R512 C505

L

be

VERTICAL

SWEEP

DOES

NOT

OCCUR

Circuits

Checked

:

•

IC601

and its related

circuits

•

Q501

and

Q502,

and

their related

circuits

Apply

a

ripple current signal,

across

a

resistor

(1

Kohm)

and capacitor

(10>F)

in

serial

connection,

to pin

(2)

of

IC601.

Sweep

occurs

vertically

on

the

raster.

I

IC601

|R504

1

R505
R506

LR507

T

R508

R509

R510

C503

C506

No

sweep occurs.

ct:_

R511

I

Caution:

R51

2

| When

inspecting,

reduce

the brightness

R513

|

level

to protect

the

CRT

from damage.

R514

1

R51_5j

Note:

Ripple

current

signal

is represented

at

the

junction of

C706

and R703.

L

IC601

R505

R506 R519

Q501

D502

R507 R520

Q502

D503

R508

C509

DY601

R503 R516

C510

D504 R504

R518

C512

R524

20

Circuits

Checked:

•

IC491

to 4

and its

related

circuits

•

Q851

and

its

related

circuits

•

Q861

and

its

related

circuits

•

Q871

and

its

related

circuits

NO

SPECIFIC COLOR

APPEARS

The

raster

is

colored

in

red or

cyan.

The

raster

is

colored

in green or

magenta.

Check

the

red

video

circuit (Q451,Q851).

The

raster is

colored

in

blue

or

yellow.

Check

the green

video

circuit

(Q461,Q861).

Check

the blue

video

circuit

(Q471,Q871).

IC491

C850 l

IC492

C856

|

IC493

R865

|

IC494

R868

i

Q451

R856

|

Q851

R862

.

C451

R850

C853

IC491

IC492
IC493

IC494

Q461

R851

R866

R869

C461
C851

C857

—

C854

I

Q861

I

R863

IC491

R870

IC492 C471

IC493 C852

IC494

C855

Q471 R852
Q871

R864

R858

R870

C864

C858

21

P.

C.

BOARD (Top

and

Bottom

Views)

:RT

Socket

PCB

(Top

View)

SOTE:

The

Parts shown

with solid

symbols

for this

P.C.Board

are

inserted from

the top side

*

U.S.A.

up to

55050/CANADA

up

to

7004

*

U.S.A.

55051

~

/CANADA

7005

R-BIAS

0R862

G-B1AS

B-BIAS

Q

R863

Q

R864

R-ORIVE

R85a

9

R-BIAS

Q

R862

G-BIAS

QR863

B-BIAS

©R864

R-DRIVE

Rasa

QR856

B

Zg|SvE

8b$H

It

)RT

Socket

PCB

(Bottom

View)

U.S.A. up to

55050/CANADA

up to 7004

*

U.S.A.

55051

~

/CANADA

7005

R858

R-DRIVE

0B-DRIVE»R856

22

LEDPCB (Top View)

Main PCB (Top

View)

U.S.A.

up to

55050/CANADA

up to

7004

fF4?6SCg]

W

TDKDX-TlSV

ffiClM

I

LED PCB

(Bottom

View)

IF4I65CE]

fl

T0K-TI5V

%

23

Main

PCB (Top View)

*

U.S.A.

55051

~

/CANADA

7005

~

-TU

^^^^

B*73

R4S3

R493

I

"

**

R*22

j-W_CONTRAST|

v-sizE

r

r i

IN

I

Q422

8

:%

A

lg

JLo

T<j

TS

j

"

V—

'

^j.

CS02

^cy

|

t L

ST §©

R6I2

R50S

C620

S

'j

,

JCAUTION-FOR

CONTINUED

PROTECTION

|

I AGAINST

|A

RISK

OF

FIRE, REPLACE

ONLY

WITH

SAME TYPE IS

A-I2SV

FUSE.1—

I

o

24

Main

PCB

(Bottom

View)

*

U.S.A.

up to

55050/CANADA

up to

7004

1

043)

T

5

0471

To

0461

3^-vJ

r ai

rnnw-FOR

continued

protection

against

a

risk

of

fire,

r

OAU I

lUrSi-REp

LACE

0NLY

WITH

SAME

TYPE

4A-I25V

FUSE.

1

FT ,

(>

L49I

[.mJ

'

L492

LsaJ

L493

[jui

1

J.495

o^jy

R484

R4B3

j

B48S

^0491

SW30I- V-CEWTEH

r

,

D49Z

JL

.3

2

]

p

^D493

^D494

, D495
. P496

'

R49I

4

IS

J

BLACK

BLUE

WHITE

f||l||

F^

s|

F70I

4A

125V

25

Main

PCB

(Bottom

View)

*

U.S.A.

55051

~

/CANADA

7005

~

_FOR

CONTINUED

PPOTECT10N

AGAINST A

KKK/*™^

I

5

1

R468

ADJ.

,1

* utu

T

5

0471

TS

0461

1:

Icaution-ss

gg

gggjagsg

jTOJgyMr

iiiiiii'iiin

ET -O

O

ktoi

If

iff

M

P4>

I

SWSOI-

V-CEMTEH

,,0498

J!^

3

z l

p

Td4«

'

^0494

j

7m?s

.g;^«-S,

,

doe

»

5

„,v~J

I

?4^9

/this

K4I63QAI

1F4I63CEI

A

26

WIRING

DIAGRAM

AND

PARTS

LOCATION

Q

Z

a

o

<

z

ft

O Q

z

z

LU

111

P P

a

z

a o

<

z

tt

Q Q

Z

Z

UJ UJ

A

oo

uj

i-

•-

g

<D-

~

O O

©

QZ

—

OO

I

r

t

rj

ujuj

©

27

1.

Cabinet

Exploded

View

CABINET EXPLODED

VIEW/PARTS

LIST

***

Mark:

U.S.A.

21988-55000

**Mark:

U.S.A.

21988-only

*

Mark:

CANADA

only

jo£3)

(©

|

28

2.

Electrical Parts

List

PRODUCT

SAFETY

NOTErComponents

marked

with

a

a

have special

characteristics

important

to safety.

Before

replacing

any

of

these

components,

read

carefully the

SAFETY

NOTICE

on

page

4

of

this

service manual. Do not

degrade the

safety

of

the product

through

improper servicing.

Components

marked

with

an

a

are

related

to

the X-ray protection

circuit.

REF.NO.

DESCRIPTION

RS

PART

NO.

MFR'S

PART NO.

P.C.B. Assembly.

Main (PCB-A) (U.S.A.)

AX9203 DUNTK4163RA0H

Consists of

the

following: (CANADA)

DUNTK4163RA1H

CAPACITORS

C401

Electrolytic,

22/xF, 16V,

±20%

CC226MDAP

VCEAAA1CW226M

C402 Ceramic,

0.0

VF, 50V,

+80-20%

CC103ZJCP

VCKZPA1HF103Z

C403 Electrolytic, 10/J=, 50V,

±20%

CC

106MJAP

VCEAGA1HW106M

C404

Electrolytic,

47^F,

16V, ±20%

CC476MDAP

VCEAGA1CW476M

C405 Electrolytic, 100

M

F,

25V,

±20%

CC107MFAP

VCEAGA1EW107M

C406

Electrolytic,

47/xF, 25V,

±20%

CC476MFAP

VCEAGA1EW476M

C407

Ceramic,

0.0

VF, 50V,

+80-20%

CC103ZJCP

VCKZPA1HF103Z

C408

Ceramic,

100pF,

500V,

±10%

CC104KJCP

VCKYPA2HB101K

C451 Ceramic,

15pF, 50V,

±5%

CC150JJCP

VCCSPA1HL150J

C461

Ceramic,

15pF,

50V,

±5%

CC150JJCP

VCCSPA1HL150J

C471 Ceramic,

15pF, 50V,

±5%

CC150JJCP

VCCSPA1HL150J

C481 Electrolytic,

220/xF,

16V, ±20%

CC227MDAP

VCEAGA1CW227M

C482

Ceramic,

0.0

VF, 50V, ±+80-20%

CC103ZJCP VCKZPA1HF103Z

C483 Ceramic,

820pF,

50V,

±10%

CC821KJCP

VCKZPA1HB821K

C484 Electrolytic,

VF,

50V, ±20%

CC105MJAP

VCEAAA1HW105M

C491

Ceramic,

0-VF,

25V,

+80-20%

CC104ZFCP

VCTYPU1EF104Z

C492 Electrolytic,

VF,

50V,

±20%

CC105MJAP

VCEAAA1HW105M

C493

Ceramic,

O.VF,

25V,

+80-20%

(U.S.A.

21988-)

CC104ZFCP

VCTYPU1EF104Z

C502

Ceramic,

180pF, 50V,

±5%

CC181JJCP

VCCSPA1HL181J

C503 Tantalum,

2.2^iF,

35V,

±10%

CC225KGTP

VCSATA1VE225K

C504 Electrolytic,

VF,

50V, ±20%

CC105MJAP

VCEAAA1HW105M

C505 Electrolytic,

1000/iF,

16V,

±20%

CC108MJAP

VCEAAA1CW108M

C506

Ceramic,

0.0047^F, 50V,

±10%

CC472KJCP

VCKZPA1HB472K

C507 Electrolytic, 33^F,

16V,

±10%

CC336KDAP

VCEACA1CC336K

C508 Electrolytic,

10/*F, 25V,

±20%

CC106MFAP

VCEAAA1EW106M

C509

Electrolytic,

470/iF,

25V,

±20%

CC477MFAP

VCEAAA1EW477M

C510

Electrolytic,

1000/iF, 50V,

±20%

CC108MJAP

VCEAAH1HW108M

C511 Ceramic,

39pF, 50V,

±5%

CC390JJCP

VCCSPA1HL390J

C512 Tantalum,

2.2/iF,

35V,

±10%

CC225KGTP

VCSATA1VE225K

C514 Electrolytic,

10/iF,

16V,

±20%

CC106MDAP

VCEAAA1CW106M

C515 Ceramic,

0.0

VF, 500V,

±10%

CC103KUCP

VCKYPB2HB103K

C601

Mylar*,

0.01

8/^F, 50V,

±10%

CC183KJMP

VCQYSH1HM183K

C603

Electrolytic,

VF,

50V,

±20%

CC105MJAP

VCEAAA1HW105M

C604 Polypro

Film,

0.0027/iF,

100V, ±2%

CC272GLHP

VCQPSA2AA272G

*Mylar

is

a

registered

trademark

of

E.I.Du

Pont de

Nemours and Company.

29

REF.NO.

DESCRIPTION RS

PART NO. MFR'S

PART

NO.

C605

Mylar,

0.0068/xF,

50V,

±10% CC682KJMP

VCQYSH1HM682K

C606

Mylar, 0.0022/^F, 50V,

±5% CC222KJMP VCQYSH1HM222J

C607 Electrolytic,

10/tF,

16V,

±20% CC106MDAP

VCEAAA1CW106M

C608

Electrolytic,

220jiF, 25V,

±20%

CC227MFAP

VCEAGA1EW227M

C609

Ceramic,

0.00

VF,

50V,

±10%

CC102KJCP VCKZPA1HB102K

C610 Mylar,

0.0047fiF,

50V, ±10% CC472KJMP

VCQYSH1HM472K

C611

Mylar,

0.015^F,

50V,

±10% CC

153KJMP

VCQYSH1HM153K

C612

Mylar,

0.056/tF,

50V,

±10% CC563KJCP

VCQYSH1HM563K

C613

Mylar, 0.027/tF, 50V,

±10% CC273KJMP

VCQYSH1HM273K

C614

Ceramic,

0.00

VF,

50V,

±10%

CC102KJCP

i

VCKZPA1HB102K

C615

Ceramic, 0.01/tF,

50V, ±10%

CC103KJCP

VCKZPA1HB103K

C616

Ceramic,

470pF, 50V, ±10%

CC471KJCP

VCKZPA1HB471K

C617

Electrolytic,

4.7/tF,

50V,

±20%

CC475MJAP VCEAGA1HW475M

C618

Ceramic,

0.00VF,

50V,

±10%

CC102KJCP

VCKZPA1HB102K

C619

Ceramic,

82pF,

50V,

±5%

CC820JJCP

VCCSPA1HL820J

C620 Electrolytic,

100jiF,

25V, ±20%

CC107MFAP VCEAGA1EW107M

C623

A

Metalized Polypro,

0.33/iF,

200V,

±5%

CC334JPGP VCFPPD2DB334J

C625AA Metalized Polypro,

0.0022/tF,

1.6kV,

±5%

CC222JYHP

VCFPPC3CA222J

C626

A A

Metalized

Polypro, 0.001 5/iF, 1.6kV,

±5%

CC152JYHP

VCFPPC3CA152J

C627

AA

Metalized

Polypro,

0.001

5/tF,

1.6kV,

±5% CC152JYHP

VCFPPC3CA152J

C628

AA

Metalized

Polypro, 0.001 5/tF, 1.6kV,

±5%

CC152JYHP VCFPPC3CA152J

C629 Not used

C630

A

Polypro

Film, 0.068^F, 200V,

±10%

CC683KPHP

VCQPSC2DA683K

C701 A

Across Line, 0.22/iF,

125V (AC), ±20%

AC-0091 RC-QZ019DCEZZ

C702

Ceramic, 0.0

VF,

250V

(AC)/1.4kV (DC),

±5%

CC103JYCP

RC-KZ007JCEZZ

C703 Ceramic,

0.0

VF,

250V

(AC)/1.4kV

(DC), ±5%

CC103JYCP RC-KZ007JCEZZ

C704

Ceramic,

0.0

VF,

500V, ±10%

CC103KUCP

VCKYPB2HB103K

C705

A

Electrolytic,

470/iF, 200V, ±20%

CC477MPAP

RC-EZ0164CEZZ

C706 A Electrolytic,

330/iF,

200V,

±20%

CC337MPAP RC-EZ0162CEZZ

C707

A

Electrolytic,

100/iF,

160V,

±20%

CC107MNAP

VCEAAH2CW107M

C708 Electrolytic,

47/iF,

50V,

±20%

CC476MJAP

VCEAGA1HW476M

C709

Polypro Film,

0.047nF,

200V, ±10%

CC473KPHP

VCQPSB2DA473K

C710 Ceramic, 0.0047^F, 500V,

±10%

CC472KUCP VCKYPA2HB472K

C711

AA

Ceramic,

0.0

VF, 50V,

±10%

CC103KJCP VCKZPA1HB103K

C712

A

Ceramic,

3300pF, 125V

AC,

±20%

CC332MXCP

RC-KZ0030CEZZ

C713 Electrolytic,

1000/iF,

35V,

±20%

CC108MGAP VCEAAH1VW108M

C714 Ceramic,

0.0

VF,

50V,

+80-20%

CC1032JCP VCKZPA1HF103Z

C715 Ceramic,

0.0

VF,

50V,

+80-20%

CC103ZJCP VCKZPA1HF103Z

C716 Ceramic,

0.0

VF, 50V,

+80-20%

CC103ZJCP VCKZPA1HF103Z

C717

Electrolytic, 100^F,

16V, ±20%

CC107MDAP

VCEAGA1CW107M

C718

Electrolytic,

470/tF,

16V,

±20%

CC477MDAP

VCEAGA1CW477M

C719

Electrolytic,

100/iF, 25V,

±20%

CC107MFAP

VCEAGA1EW107M

C720

A

Electrolytic,

470/tF,

25V,

±20%

CC477MFAP

VCEAAA1EW477M

C721

A Electrolytic 100^F,

25V,

±20%

CC107MFAP

VCEAGA1EW107M

C722

Ceramic,

0.00

VF, 500V,

±10%

CC102KUCP VCKYPA2HB102K

C723

Ceramic,

0.022/tF,

50V,

+80-20%

(U.S.A. Up to 66050/CANADA

Up

to

7004)

CC223ZJCP VCKZPA1HF223Z

C723

Mylar,

0.022/tF,

50V,

±10%

(U.S.A.

66051

-/CANADA

7005-)

VCQYSH1HM223K

30

REF.IMO.

DESCRIPTION

RS PART NO.

MFR'S

PART

NO.

CONNECTORS

TP401/ Plug,

TP J

7460

QPLGN0207CEZZ

TP402

C Plug, H-Size, 2-Pin

J

7460 QPLGN0207CEZZ

M Plug, ADG

coil, 2-pin

J

7460

QPLGN0207CEZZ

NA Plug,

LED, 2-pin

J7501 QPLGN0213GEZZ

E Plug,

Video

Input,

9-pin

J

7

508

QPLGN0913GEZZ

EA Plug, AC

Input,

4-pin

AJ7597 QPLGN0404CEZZ

K Plug, Deflection

Yoke, 6-pin J 4001

QPLGN0603CEZZ

LA-LB Socket

for

CRT

PCB,

4-pin

AJ4023

CSOCN0430RA5C

WA-WB Socket for

CRT

PCB,

7-pin (U.S.A.)

A

J

4024

CSOCN0730RA07

(CANADA)

CSOCN0730RA08

DIODES

D401

1S2471

Silicon

DX2447

RH-DX0046CEZZ

D402

1S2473

Silicon

DX0230 RH-DX0048CEZZ

D404

1SS133

Silicon

DX2230

RH-DX0142CEZZ

D405

1SS133 Silicon

DX2230

RH-DX0142CEZZ

D406

1S2473

Silicon

DX0230

RH-DX0048CEZZ

D407

Not used

D408

Zener AW

08-12

Silicon

DX2451

RH-EX0061CEZZ

D420 1SS133

Silicon

DX2230

RH-DX0142CEZZ

D421

1SS133

Silicon

DX2230

RH-DX0142CEZZ

D422 1SS133

Silicon

DX2230

RH-DX0142CEZZ

D481

Zener RD 5.1EB

DX0398

RH-EX0049CEZZ

D491

Zener

RD

5.1EB

(CANADA/USA

Up

to 21987) DX0398

RH-EX0049CEZZ

1SS1

19 Silicon

(USA 21

988-

)

VHD1SS119//-1

D492

Zener

RD

5.1EB (CANADA/USA

Up

to

21987)

DX0398

RH-EX0049CEZZ

1SS119 Silicon

(USA

21988-)

VHD1SS119//-1

D493

Zener RD 5.1EB

(CANADA/USA

Up to

21987)

DX0398 RH-EX0049CEZZ

1SS1 19 Silicon

(USA

21988-)

VHD1SS119//-1

D494

Zener RD 5.1EB

(CANADA/USA

Up to

21987) DX0398

RH-EX0049CEZZ

1SS1 19 Silicon

(USA

21988-)

VHD1SS119//-1

D495

Zener

RD 5.1EB

DX0398

RH-EX0049CEZZ

D496 Zener RD

5. 1 EB

DX0398

RH-EX0049CEZZ

D501

Zener

RD

6.2EB

Silicon

(Up

to

4050

U.S.A.)

DX0501

RH;EX0024CEZZ

D501

Zener RD

6.2F

Silicon

(CANADA/U.S.A.

4051

~)

RH-EX0247CEZZ

D502

1S2473

Silicon

DX0230

RH-DX0048CEZZ

D503

1S2473

Silicon

DX0230

RH-DX0048CEZZ

D504

A

TVR1J

Silicon

DX2617

RH-DX0105TAZZ

D601

1SS

133 Silicon

DX2230

RH-DX0142CEZZ

D602

1S2473 Silicon

DX0230

RH-DX0048CEZZ

D603

AA

RH1S

Silicon

DX2275

RH-DX0086TAZZ

D604

Zener

RD

12E

Silicon

DX2311

RH-EX0047CEZZ

D605

AA

Zener RD 22E

Silicon

DX1162

RH-EX0091CEZZ

31

REF.NO.

DESCRIPTION

RS

PART

NO. MFR'S

PART NO.

D701

A

1S1887 Silicon

DX2443

RH-DX0038CEZZ

D702

A

1S1887 Silicon

DX2443

RH-DX0038CEZZ

D703

A

1S1887

Silicon

DX2443

RH-DX0038CEZZ

D704

A

1S1887

Silicon

DX2443 RH-DX0038CEZZ

D705

A

Zener HZ60

Silicon

DX0237 RH-EX0086CEZZ

D706 1S2473

Silicon DX0230

RH-DX0048CEZZ

D707 1S2473

Silicon

DX0230

RH-DX0048CEZZ

D708

1D4B42

Silicon DX0235

RH-DX0200CEZZ

D709

1SS119

Silicon DX2272

VHD1SS119//-1

D710

Zener

RD 12E Silicon DX2311

RH-EX0047CEZZ

D711

S5277G

Silicon DX2276 RH-DX0110CEZZ

D712

RH1S

Silicon

DX2275 RH-DX0086TAZZ

D713

A

RG2

Silicon DX0236 RH-DX0181CEZZ

D714

AA

RF1

Silicon

DX2450

RH-DX0101CEZZ

D716

1S2473

Silicon

DX0230

RH-DX0048CEZZ

D717

A

RH1S

Silicon

DX2275

RH-DX0086TAZZ

SCR701A

Silicon

Controlled

Rectifier

S6192F

DX2454 VHSS6192FLB1E

FUSES

F701

a

4A,

Fast

Blow

HF-1193

QFS-B4021GEZZ

F702

A

1.5A, Fast Blow

AHF0010 QFS-B1521GEZZ

ICs

IC491 IC SN74S04N

HEX

Inverter AMX4945

VHISN74S04/-1

IC492

IC

HD7406

HEX Inverter

(Open

Collector) AMX3675

VHIHD7406//-1

IC493 IC HD7426

Quad

2-input Gate

MX4297

VHIHD7426/M

IC494

IC

SN74S11N

Tripple

3-lnput

AND

Gate

MX6406

VHISN74S11/-1

IC601AA

IC HA11235 SYNC.

AFC,

X-Ray Protector,

Bipolar Linear

MX6452

RH-IX0065CEZZ

IC701AA

IC

T2058

Povyer

Regulator,

Bipolar Linear

MX6092

RH-IX0137CEZZ

COILS

L491

Ferrite Bead

RBLN-0038CEZZ

L492

Ferrite Bead

RBLN-0038CEZZ

L493

Ferrite

Bead

RBLN-0038CEZZ

L494

Ferrite

Bead

RBLN-0038CEZZ

L495

Ferrite

Bead

RBLN-0018CEZZ

L496

Ferrite

Bead RBLN-0018CEZZ

L602

Linearity

Coil

ACA8373

RCILZ0213CEZZ

L702

A

Line

Filter

ACA8382

RCILF0087CEZZ

TRANSISTORS

Q401-

2SA1015(Y)

A.B.L.,

Silicon PNP

2SA1015

VS2SA1015Y/1E

32

REF.NO.

DESCRIPTION

RS

PART NO.

MFR'S

PART NO.

Q402 2SA854(Q)

Blanking, Silicon

PNP

2SA854Q

VS2SA854-Q/1E

Q421

2SC1815(Y) Contrast Circuit, Silicon

NPN 2SC1815Y VS2SC1815YW-1

Q422

2SC1815(Y)

Contrast

Circuit,

Silicon

NPN

2SC1815Y

VS2SC1815YW-1

Q423

2SC1815(Y) Horizontal

Sync. Silicon NPN 2SC1815Y

VS2SC1815YW-1

Q451

2SC1815(Y) Red Amp., Silicon NPN

2SC1815Y

VS2SC1815YW-1

Q461

2SC1815(Y) Green Amp.,

Silicon

NPN

2SC1815Y

VS2SC1815YW-1

Q471

2SC1815(Y) Blue Amp.,

Silicon NPN 2SC1815Y

VS2SC1815YW-1

Q501 2SC1826

(G)

Vertical Output,

Silicon

NPN

2SC1826

VS2SC1826GL2E

Q502 2SC1826

(G)

Vertical

Output, Silicon NPN

2SC1826

VS2SC1826GL2E

Q601

2SC1213A

(C)

Horizontal

Driver,

Silicon

NPN

2SC1213C VS2SC1213AC1A

Q602

a

2SD869 Horizontal

Output,

Silicon

NPN 2SD869 VS2SD869-//1E

Q701 2SD325

(F> B+

Regulator,

Silicon NPN 2SD325

VS2SD325-F/1E

RESIS

TORS: Unless

otherwise

specified,

resistors are 1/4W,

±5%,

carbon type.

R401

Oxide Film,

270

ohm, 1W,

±5%

N0155EGD

VRSA/V3AB271J

R402 330 ohm

N0189EEC VRD-RA2EE331J

R403 1 2k

ohm

N0288EEC

VRD-RA2EE123J

R404

5.6k ohm

N0257EEC VRD-RA2EE562J

R405 10k

ohm

N0281EEC VRD-RA2EE103J

R406

Oxide Film,

3.9k ohm, 1W,

±5%

N0237EGD

VRS-VV3AB392J

R407

1

0k

ohm

N0281EEC VRD-RA2EE103J

R408

1.2k ohm

N0199EEC

VRD-RA2EE122J

R409

820 ohm

N0187EEC VRD-RA2EE821J

R410 1 20

ohm

N0136EEC

VRD-RA2EE121J

R411

Carbon,

1.5k ohm,

1/8W, ±5%

N0206EBC

VRD-RA2BE152J

R412

Carbon,

1.8k

ohm,

1/8W,

±5%

N0210EBC

VRD-RA2BE182J

R413

Carbon,

470

ohm, 1/8W,

±5%

N0169EBC VRD-RA2BE471J

R414

Carbon,

330

ohm,

1/8W,

±5%

N0159EEC VRD-RA2BE331J

R415

330

ohm

N0189EEC

VRD-RA2EE331J

R416

See

Controls

(PCB-A)

R417

See

Controls

(PCB-A)

R421

1.2k ohm

N0199EEC

VRD-RA2EE122J

R422

See

Controls

(PCB-A)

R423

270

ohm

N0155EEC

VRD-RA2EE271J

R424

Oxide Film,

470

ohm,

1W,

±5%

N0169EGD

VRS-VV3AB471J

R425

Carbon,

270 ohm,

1/2W,

±5%

N0155EFC

VRD-RA2HD271J

R426

Carbon, 270

ohm,

1/2W,

±5%

N0155EFC

VRD-RA2HD271J

-R427

Carbon, 270

ohm,

1/2W,

±5%

N0155EFC

VRD-RA2HD271J

R451

Carbon,

680 ohm,

1/8W,

±5%

N0183EBC

VRD-RA2BE681J

R452

Carbon, 1.5k

ohm, 1/8W,

±5%

N0206EBC

VRD-RA2BE152J

R453

470

ohm

N0169EEC VRD-RA2EE471J

R454

Carbon,

820

ohm,

1/8W,

±5%

N0187EBC VRD-RA2BE821J

R455

1.2k ohm

N0199EEC

VRD-RA2EE122J

R456

8.2k

ohm

N0122EEC

VRD-RU2EE822J

R461

Carbon,

680

ohm,

1/8W, ±5%

N0183EBC

VRD-RA2BE681J

R462

Carbon,

1.5k

ohm,

1/8W,

±5%

N0206EBC

VRD-RA2BE152J

R463

470 ohm

N0169EEC

VRD-RA2EE471J

33

REF.NO.

DESCRIPTION

RS

PART

NO.

MFR'S PART

NO.

3464

3465

3466
3468

3471

3472

3473

3474

3475
3476

3481

3482

3483

3484

3485

3486

3491

3492
3493

3503

3504

3

505

3506

=

507

=

508

=

509

=

510

=

511

=

512

=

513

=

514

=

515

=

516

=

518

=

519

=

520

=

521

=

523

3524

=

525

3526

=

527

3528

=

550

=

551

3552

=

603

3604

A

A

Carbon,

820

ohm,

1/8W,

±5%

1.2k ohm

8.2k ohm

See

Controls

(PCB-A)

Carbon, 680

ohm,

1/8W,

±5%

Carbon,

1.5k ohm,

1/8W,

±5%

470 ohm

Carbon,

820 ohm,

1/8W, ±5%

1.2k

ohm

8.2k

ohm

Oxide

Film,

82

ohm,

3W, ±5%

Carbon,

330

ohm,

1/8W, ±5%

1

20k

ohm

10k

ohm

680 ohm

100 ohm

Carbon, 560 ohm,

1/8W,

±5%

56 ohm

5.6k ohm

390 ohm

Carbon,

2.7k

ohm,

1/8W,

±5%

10k

ohm

Oxide Film,

82 ohm,

1W,

±5%

See Controls

(PCB-A)

Carbon,

4.7

ohm,

1/2W,

±5%

Carbon, 4.7k

ohm,

1/8W,

±5%

470 ohm

Carbon, 12k

ohm,

1/8W,

±5%

Carbon, 47k

ohm,

1/8W,

±5%

3.3k

ohm

See

Controls

(PCB-A)

4.7k ohm

3.3k ohm

Carbon,

5.6 ohm,

1/2W,

±5%

Carbon,

390 ohm,

1/2W,

±5%

Oxide

Film,

390

ohm, 1W,

±5%

Oxide Film,

680

ohm, 2W,

±5%

Not

used

£xtde

Film,

15

ohm,

2W,

±5%

82

ohm

See

Controls (PCB-A)

Not

used

Not

used

Oxide

Film,

3.3k ohm, 1W,

±5%

Oxide Film,

2.2k ohm,

1W,

±5%

Oxide

Film,

270

ohm,

1W,

±5%

15k ohm

8.2k

ohm

N0187EBC

N0199EEC
N0122EEC

N0183EBC

N0206EBC

N0169EEC

N0187EBC

N0199EEC
N0122EEC
N0122EJD

N0189EEC

N0375EEC

N0281EEC

N0183EEC

N0132EEC

N0176EBC

N0107EEC

N0257EEC

N0162EEC

N0224EBC

N0281EEC

N0122EGD

N0040EFC

N0247EBC

N0169EEC

N0288EBC
N0340EBC

N0230EEC

N0247EEC

N0230EEC
N0052EFC
N0162EFC

N0162EGD

N0183EHD

N0074EHD

N0122EEC

N0230EGD

N0216EGD

N0155EGD

N0297EEC
N0271EEC

VRD-RA2BE821J

VRD-RA2EE122J
VRD-RU2EE822J

VRD-RA2BE681J

VRD-RA2BE152J

VRD-RA2EE471J

VRD-RA2BE821J

VRD-RA2EE122J

VRD-RU2EE822J

VRS-VV3LB820J

VRD-RA2BE331J

VRD-RA2EE124J

VRD-RA2EE103J
VRD-RA2EE681J

VRD-RA2EE101J

VRD-RA2BE561J

VRD-RA2EE560J

VRD-RA2EE562J

VRD-RA2EE391J

VRD-RA2BE272J

VRD-RA2EE103J

VRS-VV3AB820J

VRD
VRD
VRD

VRD-

VRD
VRD

RA2HD4R7J

RA2BE472J

RA2EE471J

RA2BE123J
RA2BE473J

RA2EE332J

VRD-RA2EE472J

VRD-RA2EE332J

VRD-RA2HD5R6J

VRD-RA2HD391J

VRS-VV3AB391J

VRS-VV3DB681J

VRS-VV3DB150J

VRD-RA2EE820J

VRS-VV3AB332J
VRS-VV3AB222J
VRS-VV3AB271J

VRD-RA2EE153J
VRD-RA2EE822J

34

REF.NO.

DESCRIPTION

RS PART NO. MFR'S

PART

NO.

R605

33k

ohm

N0324EEC VRD-RA2EE333J

R606

12k ohm N0288EEC VRD-RA2EE123J

R607 See

Controls

(PCB-A)

R608

680k

ohm N0433EEC VRD-RA2EE684J

R609 220

ohm

N0149EEC VRD-RA2EE221J

R612

220 ohm

N0149EEC

VRD-RA2EE221J

R613

A

Oxide

Film, 47

ohm,

3W, ±5% N0099EJD

VRS-VV3LB470J

R614 100

ohm

N0132EEC

VRD-RA2EE101J

R615

AA

Carbon,

47

ohm,

1/2W, ±5% N0099EFC VRD-RA2HD470J

R616

100 ohm N0132EEC

VRD-RA2EE101J

R617

3.9k

ohm N0237EEC

VRD-RA2EE392J

R618

AA

10k

ohm

N0281EEC

VRD-RA2EE103J

R619

AA

Carbon, 10k ohm,

1/8W,

±5% N0281EBC

VRD-RA2BE103J

R620 100

ohm

N0132EEC

VRD-RA2EE101J

R621

100 ohm

N0132EEC VRD-RA2EE101J

R622 4.7k ohm

N0247EEC

VRD-RA2EE472J

R623

See Controls

(PCB-A)

R624

15k ohm

N0297EEC

VRD-RA2EE153J

R626 Oxide Film, 560

ohm,

1W,

±5%

N0176EGD

VRS-VV3AB561J

R631

a

Oxide Film, 10

ohm, 1/2W,

±5%

N0063EFD

VRS-SV2HC100J

R632

A

Oxide Film,

3.3 ohm, 1W,

±5%

N0037EGD

VRN-VV3AB3R3J

R701

A

Cement,

1.8

ohm,

5W, ±10%

N0029FKF

VRW-KP3HC1R8K

R702

180k ohm

N0387EEC

VRD-RA2EE184J

R703

A

A

33k ohm

N0324EEC

VRD-RA2EE333J

R704

a

Oxide Film,

150

ohm, 1/2W,

±5%

N0142EFD

VRS-SV2HC151J

R705

a

Oxide

Film,

330 ohm,

3W, ±5%

N0159EJD

VRS-VV3LB331J

R706

AA

82k

ohm

N0360EEC

VRD-RA2EE823J

R707 See

Controls

(PCB-A)

R708

A

Cement, 2.7

ohm,

5W, ±10%

N0034FKF

RR-WZ0058CEZZ

R709

AA

Carbon,

3.9k ohm,

1/8W,

±5%

N0237EBC

VRD-RA2BE392J

R710

Carbon,

15k

ohm, 1/8W,

±5%

N0297EBC

VRD-RA2BE153J

R711 560 ohm

N0176EEC VRD-RA2EE561J

R712

56

ohm

N0107EEC VRD-RA2EE560J

R713

Carbon, 12k ohm,

1/2W,

±5%

N0288EFC VRD-RA2HD123J

R714 1k

ohm

N0196EEC

VRD-RA2EE102J

R715

A

Oxide Film,

39

ohm,

1/2W,

±5%

N0092EFD VRS-SV2HC390J

R716

A

Oxide Film,

0.68

ohm, 1W,

±5%

N0015EGD

VRN-VV3ABR68J

R717

A

1

ohm

N0022EEC VRD-RA2EE1R0J

R718

A

Carbon, 3.9M ohm,

1/2W,

±10%

N0460FFB

VRC-UA2HG395K

R719

AA

680k

ohm

N0433EEC

VRD-RA2EE684J

R720

1.5k ohm

N0206EEC

VRD-RA2EE152J

R721'

1.2k ohm

N0199EEC

VRD-RA2EE122J

TRANSFORMERS

T601

Horizontal

Driver

ATB0425

RTRNZ0217CEZZ

T602

AA

(Flyback)

ATB0428

RTRNF1545CEZZ

35

REF.NO.

DESCRIPTION

RS

PART

NO.

MFR'S PART

NO.

T701

Power (U.S.A.)

ATA001

RTRNP0361CEZZ

(CANADA)

RTRNP0372CEZZ

T702

Power

Choke

ATA 1062

RTRNC0028CEZZ

SWITCHES

SW501

V-Center

AS0020

QSW-B0006CEZZ

5W701

Power

AS0015

QSW-P0317CEZZ

CONTROLS

3416

Pot,

Sub-Brightness,

B-curve

10k ohm

AP7412

RVR-M7053TAZZ

=1417/

Pot, Brightness,

B-curve

10k

ohm

AP7003

RVR-Z4044CEZZ

3422/

Pot,

Contrast

B-curve 100

ohm

3507/ Pot, V-Size, B-curve

100

ohm

3514/ Pot,

V-Hold,

B-curve 5k

ohm

3623

Pot,

H-Center,

B-curve

50k

ohm

3468 Pot,

Brown AD

J,

B-Curve

5k

ohm

AP6690

RVR-M7198TAZZ

3526

Pot, V-Line,

B-curve

500

ohm

AP7416

RVR-B4456CEZZ

3607 Pot,

H-Hold, B-curve

5k ohm

AP7419

RVR-B4460CEZZ

3707

AA

Pot,

B + ADJ,

B-curve

1k ohm

P-7681

RVR-B4457CEZZ

MISCELLANEOUS

=R701

A

Posistor

T-1251

RMPTP0026CEZZ

Holder,

Fuse

F-1406

QFSHD1002CEZZ

REF.IMO.

DESCRIPTION

RS

PART

NO.

MFR'S PART

NO.

P.C.B.

Assembly,

CRT

Socket

(PCB-B)

AX

9204

DUNTK4164RA0H

Consists of

the following:

CAPACITORS

3850

Ceramic, 150pF,

50V,

db5%

CC151KJCP

VCCSPA1HL151J

3851

Ceramic, 150pF,

50V,

±5%

CC151KJCP

VCCSPA1HL151J

3852

Ceramic,

150pF, 50V,

±5%

CC151KJCP

VCCSPA1HL151J

C853

Ceramic,

150pF, 50V,

±5%

CC151KJCP

VCCSPA1HL151J

C854

Ceramic,

180pF,

50V,

±5%

CC181JJCP

VCCSPA1HL181J

3855

Ceramic,

180pF, 50V,

±5%

CC181JJCP

VCCSPA1HL181J

C856

See

Controls

C857

See

Controls

C858

See

Controls

C859

Ceramic,

0.0

VF,

1.4KV,

±20%

CC103MYCP

RC-KZ007JCEZZ

C860

Electrolytic,

22/JF,

250V,

+50-10%

CC226WRAP

VCEAAH2EW226Y

36

REF.NO.

DESCRIPTION

RS

PART

NO.

MFR'S PART

NO.

CONNECTOR

(Socket)

CRT

Socket,

8-pin

AJ6018

QSOCV0819CEZZ

TRANSISTORS

Q851

2SC2068 (LB)

Red output, Silicon,

NPN

2SC2068LB

VS2SC2068LB1E

Q861

2SC2068

(LB) Green output, Silicon,

NPN

2SC2068LB

VS2SC2068LB1E

Q871

2SC2068 (LB)

Blue output,

Silicon,

NPN

2SC2068LB

VS2SC2068LB1E

RESIS

TORS:

Unless

otherwise

specified,

resistors

are

1/8W,

±5%,

Carbon

type.

R850

47

ohm

N0099EBC

VRD-RA2BE470J

R851 47

ohm

N0099EBC

VRD-RA2BE470J

R852

47 ohm

N0099EBC

VRD-RA2BE470J

R853

1

50 ohm

N0142EBC

VRD-RA2BE151J

R854

270 ohm

N0155EBC

VRD-RA2BE271J

R855

1

50 ohm

N0142EBC

VRD-RA2BE151J

R856

See Controls

(PCB-B)

R857

1 50

ohm

N0142EBC

VRD-RA2BE151J

R858

See

Controls

(PCB-B)

R859

820 ohm

N0187EBC

VRD-RA2BE821J

R860

820

ohm

N0187EBC

VRD-RA2BE821J

R861 820

ohm

N0187EBC

VRD-RA2BE821J

R862

See

Controls

(PCB-B)

R863

See

Controls

(PCB-B)

R864

See

Controls

(PCB-B)

R865

A

Oxide Film,

5.6k

ohm,

2W

±5%

N0257EHD

VRS-VV3DB562J

R866

A

Oxide Film,

5.6k

ohm,

2W,

±5%

N0257EHD

VRS-VV3DB562J

R867

A

Oxide

Film,

5.6k

ohm,

2W,

±5%

N0257EHD

VRS-VV3DB562J

R868

Solid,

2.7k

ohm,

1/2W,

±10%

N0224EFB

VRC-MA2HG272K

R869

Solid,

2.7k

ohm,

1/2W, ±10%

N0224EFB

VRC-MA2HG272K

R870

Solid,

2.7k ohm,

1/2W,

±10%

N0224EFB

VRC-MA2HG272K

R871

Carbon,

220k

ohm,

1/4W,

±5%

N0396EEC

VRD-RA2EE224J

R872

Solid,

470k

ohm,

1/2W,

±10%

N0423FFB

VRC-MA2HG474K

SWITC

:h

SW851

Luminance

Video

Cut-off

AS0016

QSW-B0017CEZZ

CONTROLS

R856 Pot,

Red Drive,

B-curve

500

ohm

AP0002

RVR-B4563CEZZ

37

REF.NO.

DESCRIPTION RS

PART

NO.

MFR'S

PART NO.

R858
R862
R863

R864

Pot, Blue

Drive, B-curve 500

ohm

Pot, Red

Bias,

B-curve

5K

ohm

Pot, Green

Bias,

B-curve 5K ohm

Pot, Blue Bias,

B-curve

5K ohm

AP0002
AP0003
AP0003
AP0003

RVR-B4563CEZZ
RVR-B4567CEZZ
RVR-B4567CEZZ

RVR-B4567CEZZ

MISCELLANEOUS

SG850

A

SG851

A

SG852

A

SG853

A

Spark

Gap

Spark Gap
Spark Gap
Spark Gap

C-1615
C-1615
C-1615
C-1489

QSPGC0015CEZZ
QSPGC0015CEZZ
QSPGC0015CEZZ
QSPGC0011CEZZ

REF.NO. DESCRIPTION

RS

PART NO. MFR'S PART NO.

P.C.B. Assembly, LED (PCB-C)

Consists

of

the following:

AX9205

DUNTK4165RA0H

CONNECTOR

NA-NC

Socket

for

Main PCB,

2 pin

AJ-4028 CSOCN0230RA03

DIODE

D718

GL-9PR24

AL0010

RH-PX0161CEZZ

MISCELLANEOUS

(Parts

not

located

on

the

PCBs.)

A

L701

CRT

AA

DY601AA,

Cord,

AC

Coil, Automatic Degaussing

(U.S.A.)

(CANADA)

Magnet,

Purity and

Static

Convergence

Picture Tube (E8093B22(PD))

Yoke, Deflection

(U.S.A.)

(CANADA)

^»

Signal

Input

Cable Unit

(U.S.A.)

(CANADA)

AW1012

HC3479

AXX8018

ATB0429

AW

1023

QACCD5005CEZZ

RCILG0244CEZZ

RCILG0240CEZZ

PMAGF3006CEZZ

VBE8093B22/1Y

RCILH1477CEZZ

RCILH1482CEZZ

QCNW-0585CEZZ
QCNW-0602CEZZ

38

3. Cabinet Parts

List

REF.IMO.

DESCRIPTION

RS

PART

NO.

MFR'S

PART

NO.

101 Cabinet

Ass'y,

Front (U.S.A.)

AZ0043

CCABA1527TAKB

(CANADA)

CCABA1565TAKB

101-1

Cabinet, Front

(U.S.A.)

GCABA1527CEKB

(CANADA)

GCABA1565CEKB

101-2

Door,

Control

ADA-0242

GDORF1430CESA

101-3

Plate, Control

Door

HINDP2328CESA

101-4

Button, Power

Switch

AK0336 JBTN-1305CEKB

101-5

Spring, Button

ARB5023 MSPRC0072CEFW

104-6

Badge,

TANDY

AHC0049

HBDGZ3065CESA

101-7

Felt

Door

BK0337

GCOVH9182CE09

102 Cabinet Ass'y,

Rear

(U.S.A.)

A20031

CCABB1560TAKA

(CANADA)

CCABB1594TAKA

102-1

Cabinet, Rear

(U.S.A.)

GCABB1560CEKA

(CANADA)

GCABB1594CEKA

102-2

Label,

Warning (U.S.A.)

TCAUS3062CEZZ

(CANADA)

TCAUS3055CEZZ

102-3

Label, X-Ray Caution (U.S.A.)

TCAUH0092TAZZ

Warning (CANADA)

TCAUS3052CEZZ

102-4

Shield

PSLDM3588CEFW

102-5

Clip, Shield

LX-LZ0022TAZZ

103 Screw, 5 x 30mm,

Tapping-1,

Hexagon Head

LX-TZ3042CEFD

104

Screw, 3 x 6mm,

Machine, Bind Head

(U.S.A.

Up to

55000/CANADA

Up

to 7000)

XHBSD30P06000

Screw, 3 x

8mm,

Machine,

Binding Head

XHBSD30P08000

(U.S.A.

55001

-/CANADA

7001

~)

105 Knob, Control

AK0338

JKNBK1168CEKA

106 Bracket,

AC

Cord

(U.S.A.

Up to

21987,

55001

-)

LANGK0288CESA

(USA

21988-55000)

LANGK0298CESA

(CANADA)

LANGK0276CESA

107 Wire

Holder,

Black

LHLDW1033CE00

108

Label,

Model

NO.

(U.S.A.)

TLABM1692CEZZ

(CANADA)

TLABM1723CEZZ

109 Spring,

Grounding Strap

MSPRT0020CEZZ

110

Wedge, Yoke

PSPAG0028CEZZ

111

Wire, Grounding

Strap

QEARC1405CEZZ

112 Not used

HARDWARE

KIT

113

AHW2501021

DBNW-0001RA0H

Screw, 4 x 20mm,

Tapping-1,

Brazier Head

XTASD40P20000

114

Screw, 4 x 12mm,

Tapping-1,

Brazier Head

AHD3007

XTASD40P

12000

115

Wire Holder,

White

(U.S.A.)

LHLDW1037CEZZ

116

Shield

case,

FBT

PSLDM3614CEFW

117

Screw,

4 x

10mm,

Tapping-2,

Brazier

Head

XCASD40P

10000

118

Heat

Sink

(Q501,

Q502)

PRDAF0258TAFW

119

Screw, 3 x 8mm,

Machine, Pan Head

AHD-2915

LX-BZ3100CEFD

39

REF.NO.

DESCRIPTION

RS

PART

NO.

MFR'S

PART

NO.

120

Heat

Sink

(Q602)

PRDAR1156CEFW

121

Screw, 3 x

16mm,

Tapping-2,

Binding

Head

AHD3001

LX-CZ3004CEFU

122

Heat Sink

(SCR701)

PRDAR5043CEFW

123

Not used

124

Holder,

LED

ART0105

LHLDZ9055CEZZ

125

Wire

Holder,

White

LHLDW1047CEUZ

126

Wire

Holder,

Black

LHLDW1005GEZZ

127

Wire

Holder,

White

LHLDW1015TAZZ

128

Holder,

AC

Cord

Stopper

(U.S.A.)

LHLDW1001TA00

(CANADA)

LHLDK1010CEZZ

129

Wire

Holder,

White

LHLDW1019CEZZ

130

Label,

Model

NO. (CANADA)

TLABN0042CEZZ

131

Label, Address

(CANADA)

TLABZ0107CEZZ

132

Label,

Fuse

Caution

(CANADA)

TCAUS3111CEZZ

133

Label,

Fuse

Caution

(CANADA)

TCAUS3095CEZZ

134

Label,

CSA

(CANADA)

TLABS0003CEZZ

135

Screw,

4 x

8mm,

Machine, Pan Head

XBPBW40P08000

136

Spring

Washer

XWSPW42-10000

137

Nut,

4 x 3.2mm

XNEBW40-32000

138

Screw,

3 x

8mm,

Tapping-2, Brazier Head

XCASD30P08000

139

Wire

Holder

LHLDW1002GEZZ

140

Ferrite Core,

FB701 (U.S.A. 21

988-

RCORF0001CEZZ

141

Screw,

3 x

10mm, Machine, Pan Head (U.S.A.

21

988-

XBPSD30P10JS0

142

Ground

Plate (U.S.A.

21

988

~)

QEARP0018CEFW

143

Screw

(Ground)

(U.S.A.

21988-55000)

LX-BZ3125CEFN

40

SCHEMATIC

DIAGRAM

NOTES:

1

.

The

unit of resistance

"ohm"

is omitted

(K:1000 ohms. M:1 Meg ohm»

2. All resistors are

1/4

watt,

unless

otherwise

noted.

3

.

All capacitors

are

pF, unless

otherwise

noted

(PWiF)

4.

(G)

indicates ±2% tolerance

may

be

used.

VOLTAGE

MEASUREMENT

CONDITIONS:

1 . All

DC voltages

are

measured-

with

SSVM

connected

between

points indicated and

chassis

ground.

Line

voltage

is set

at

120V AC

and

all

contols are

set

for

a

normal

picture

unless

otherwise

indicated.

2.

All

voltages

are measured

with 1000//V

B&W

or

Color

signal.

WAVEFORMS

Waveform Measurement

Conditions:

1

. The

voltage

level

and

waveform at each

point are

given below

on

120V

/AC power

when this

set is

connected to

a personal computer

with

a

video

sig-

nal input

at 0-volt

(namely,

with no brightness

on

the screen).

2.

O*

indicates

the

waveform

check points

(in the

chart,

waveforms are

measured

from

the

point in-

dicated to

chassis ground.)

®

6.0

Vp-p (H)

£

225

Vp-p (H)

®

900

Vp-p (H)

©

1

5

V

p

-

p

(H)

(D

4.2 Vp-p

(H)

m

®

12

Vp-p

(H)

(7)

31

Vp-p

(H)

(8)

3 5 Vp-p (V)

fflH

(9)

4.2

Vp-p

(V)

10 1.9 Vp-p (V)

il

2.0 Vp-p

(H)

SEMICONDUCTOR

LEAD

IDENTIFICATION

Q85I

Q50I

Q86I

Q502

0871

Q401

45

1

Q402

Q46I

0421

047(

Q422

0601

I

2SC 1826(G)

2SC2068

D

(LB)

Q40I ZSA 10

1

5(Y)

Q402

2SA854(Q)

0421

1

Q422

0451

}2SCI6I5(Y>

0461

0471
0601

2SCI2I3A(C)

51

n

J

0701

1

TOP

VIEW

IC48I

IC49I-IC494

® ®

IC60I HA)

1235

© ®

©O ®®

SIDE

VIEW

IC70I

T2058

®

ft

®

1C48I

H074LSI36P

1C49I SN74S04N

IC492 HD7406P

IC493

HD7 426P

IC494 SN74SMN

J

44

RADIO

SHACK,

A

DIVISION

OF

TANDY

CORPORATION

U.S.A.:

FORT

WORTH,

TEXAS

76102

CANADA:

BARRIE,

ONTARIO

L4M

4W5

TANDY

CORPORATION

AUSTRALIA

BELGIUM

U.

K.

91

KURRAJONG

AVENUE

RUE

DES

PIEDS

D'AL0UETTE,39

8ILST0N

ROAD

WEDNESBURY

MOUNT

DRUITT,

N. S.

W.

2770

5140

NANINNE

(NAMUR)

WEST

MIDLANDS

WS10

7

JN

lOAK

Printed

in

Japan