Toshiba 2857DD User manual

TOSHIBA

FILE

NO.

030-9530

SERVICE

MANUAL

COLOUR

TELEVISION

C5SS

Chassis

285/DD

SAFETY

INSTRUCTIONS

WARNING:

BEFORE

SERVICING

THIS

CHASSIS,

READ

THE

"X-RAY

RADIATION

PRECAUTION",

"SAFETY

PRECAUTION”

AND

"PRODUCT

SAFETY

NOTICE"

INSTRUCTIONS

BELOW.

X-RAY

RADIATION

PRECAUTION

The

E.H.T.

must

checked

every

time

the

receiver

serviced

ensure

that

the

C.R.T.

does

not

emit

X-ray

radiation

result

excessive

E.H.T.

voltage.

The

nominal

E.H.T.

for

this

receiver

31.5

zero

beam

current

(minimum

brightness)

operating

220V

a.c.

The

maximum

E.H.T.

voltage

permissible

any

operating

circumstances

must

not

exceed

32.0

kV.

When

checking

the

E.H.T.,

use

the

‘High

Voltage

Check’

procedure

this

manual

using

accurate

E.H.T.

voltmeter.

The

only

source

X-RAY

radiation

this

receiver

the

C.R.T.

prevent

X-ray

radiation,

the

replacement

C.R.T.

must

identical

the

original

fitted

specified

the

Parts

List.

Some

components

used

this

receiver

have

safety

characteristics

preventing

the

C.R.T.

from

emitting

X-ray

radiation.

For

continued

safety,

replacement

component

should

only

made

after

referring

the

Product

Safety

Notice below.

SAFETY

PRECAUTION

This

receiver

has

nominal

working

E.H.T.

voltage

28.5

kV.

Extreme

caution

should

exercised

when

working

the

receiver

with

the

back

removed.

not

attempt

service

this

receiver

you

are

not

conversant

with

the

precautions

and

procedures

for

working

high

voltage

equipment.

When

handling

working

the

C.R.T.,

always

discharge

the

anode

the

receiver

chassis

before

removing

the

anode

cap

The

C.R.T.,

broken,

will

violently

expel

glass

fragments.

Use

shatter

proof

goggles

and

take

extreme

care

while

handling.

not

hold

the

C.R.T.

the

neck

this

very

dangerous

practice.

essential

that

maintain

the

safety

the

customer

all

cable

forms

replaced

exactly

supplied

from

factory.

small

part

the

chassis

used

this

receiver

is,

when

operating,

approximately

half

mains

potential

all

times.

therefore

essential

the

interest

safety

that

when

serving

connecting

any

test

equipment

the

receiver

should

supplied

via

suitable

isolating

transformer

adequate

rating.

Replace

blown

fuses

within

the

receiver

with

the

fuse

specified

the

parts

list.

When

replacing

wires

components

terminals

tags,

wind

the

leads

around

the

terminal

before

soldering.

When

replacing

safety

components

identified

the

international

hazard

symbols

the

circuit

diagram

and

parts

list,

must

Toshiba

approved

type

and

must

mounted

the

original.

Keep

wires

away

from

high

temperature

compo-

nents.

PRODUCT

SAFETY

NOTICE

Many

electrical

and

mechanical

components

this

chassis

have

special

safety-related

characteristics.

These

characteristics

are

often

passed

unnoticed

visual

inspection

and

the

X-ray

radiation

protection

afforded

them

cannot

necessarily

obtained

using

replacements

rated

higher

voltages

wattage,

ett.

Components

which

have

these

special

safety

characteristics

this

manual

and

its

supplements

are

identified

the

international

hazard

symbols

the

schematic

diagram

and

parts

list.

Before

replacing

any

thes=

components

read

the

parts

list

this

manual

carefully.

Substitute

replacement

components

which

not

have

the

same

safety

characteristics

specified

the

parts

list

may

create

X-ray

radiation.

FRONT

CONTROLS

AND

REAR

VIEWS

Oey

ANY

(VIDEO-3)

S-VIDEO

TERM.

MAIN

SW.

VIDEO-3

POWER

IND.

HEAD

PHONE

ON-TIMER

IND.

POSITION

DOWN

VOLUME

DOWN

ee?

—_

TOSHIBA

[e]

[oJ

[lc

(VIDEO-3)

EXT.

SPK

SW.

S-VIDEO

TERM.

EXT.

SPK

TERM.

(MAIN)

MONITOR

OUT

EXT.

SPK

TERM.

(SURROUND)

EXT.

SPK

TERM.

(CENTRE)

AERIAL

TERMINAL

VIDEO-3

(COMMON

WITH

FRONT

TERM.)

21-PIN

SOCKET

(S-VIDEO/AV)

21-PIN

SOCKET

(FULL)

REMOTE

HAND

HELD

UNIT

KEY

ASSIGNMENT

ON/STAND-BY

Sound

mute

(Quick/advanced

operation)

CALL

(On-screen

call)/

(index,

initial)

........

TELETEXT

MODE

>”

een

PICTURE

p»)

ieiwes

SOUND

Mi...

<TV

MODE

STEREO

BILINGUAL

1~9,0...

TEN

KEY

-/ee

place

VIDEO

INPUT

(EXTERNAL

INPUT

SOURCE

SW.)

ener

VOLUME

ahdouts

LEVEL

PLUS

(VOLUME,

MENU)

ahve

LEVEL

MINUS

(VOLUME,

MENU)

)

are

(POSI.,

CH.,

TEXT

PAGE)

enaa

DOWN

(POSI.,

CH.,

TEXT

PAGE)

TXT/V.......

TEXT,

MIX,

MODE

SW.

Pea

tee

HOLD

ree.

<TEXT

MODE

.......

REVEAL

CONCEAL

JIE")

TEXT

(ED

eee

TEXT

MODE

.......

F-T-B

(FULL,

TOP,

BOTTOM)

—

TEXT

CLEAR

(TEXT MODE)

FLOF

COLOUR

KEY

key

used)

Red/Green/Yellow/Blue

esses

Super

woofer

Dud]

ste

Sound

mode

select

IIR

cess

Selectable

picture

APR

cee

Selectable

sound

MENU.....

TUNING

OTHER

@/@-

select

@/q@-:

Level

down/up

16:9...

PIC

SIZE

(Picture

size

select)

VWaliHSoL

VTR

control

Power

on/standby

Play

Stop

<<)

Rewind

CT-9763

Fast

forward

CIRCUIT

BLOCK

DIAGRAM

TN-EG465LX1

MVGS44A

TUNER

IF/MPX

AUDIO

[8s

TA1218N

BAe

)

AvVSW.

(FULL)

avsw

[xe

TA1229N

SECAM

COMB

-©)

jes

BRIER

TA1222AN

O°

fe)

(2)

“4

21PIN

SAA5281ZP/E

CHROMA

(S+AV)IE

RGB

VIDEO

DEF.

RGB

iad

PROCESSOR

TA1217N

EXT

SPK

PRO-LOGIC

UNIT

TA8211AH

TA8772AN

ores}

ieee:

‘ones

ro]

EXT

SPK

DELAY

“EXT/INT

HEAD

PHONE

SPK

WOOFER

VIDEO

OUT

12C

BUS

2804544

TC74HC4053AP

(FRONT)

p-CON

;

OSD

RGB

TA8427K

MEMORY

[_,]|

(3)

NM24CO04EN

TPM87CP38N-3228

TA8859AP

HV.

(REAR)

OUT

VOLTAGE

2SD2253FA

F.B.T.

HYBRID

CONVERTER

TRANS.

STR-S6709

BUS

CONTROL

WARNING:

BEFORE

SERVICING

THIS

CHASSIS,

READ

THE

“X-RAY

RADIATION

PRECAUTION’,

“SAFETY

PRECAUTION”

AND

“PRODUCT

SAFETY

NOTICE”

PAGE

THIS

MANUAL.

INSTALLATION

AND

SERVICE

ADJUSTMENTS

GENERAL

INFORMATIONS

All

adjustments

are

thoroughly

checked

and

corrected

when

the

receiver

leaves

the

factory.

Therefore

the

receiver

should

operate

normally

and

produce

proper

colour

and

B/W

pictures

upon

installation.

However,

several

minor

adjustments

may

required

depending

the

particular

location

which

the

receiver

operated.

This

receiver

shipped

completely

cardboard

carton.

Carefully

draw

out

the

receiver

from

the

carton

and

remove

all

packing

materials.

Plug

the

power

cord

into

convenient

220

volts

two

power

outlet.

Turn

the

receiver

ON.

Check

and

adjust

all

the

customer

controls

such

BRIGHTNESS,

CONTRAST

and

COLOUR

Controls

obtain

natural

colour

B/W

picture.

AUTOMATIC

DEGAUSSING

degaussing

coil

mounted

around

the

picture

tube

that

external

degaussing

after

moving

the

receiver

normally

unnecessary,

providing

the

receiver

properly

degaussed

upon

installation.

The

degaussing

coil

operates

for

about

second

after

the

power

the

receiver

switched

ON.

the

set

moved

faced

different

direction,

the

power

switch

must

switched

off

least

minutes

order

that

the

automatic

degaussing

circuit

operates

properly.

Should

the

chassis

parts

the

cabinet

become

magnetized

cause

poor

colour

purity,

use

external

degaussing

coil.

Slowly

move

the

degaussing

coil

around

the

faceplate

the

picture

tube,

the

sides

and

front

the

receiver

and

slowly

withdraw

the

coil

distance

about

before

disconnecting

from

source.

HIGH

VOLTAGE

CHECK

CAUTION:

There

HIGH

VOLTAGE

ADJUST-

this

chassis.

Connect

accurate

high

voltage

meter

the

second

anode

the

picture

tube.

Turn

the

receiver.

Set

the

BRIGHTNESS

and

CONTRAST

Controls

minimum

(zero

beam

current).

High

voltage

will

measured

below

32.0

kV.

Rotate

the

BRIGHTNESS

Control

both

extremes

sure

the

high

voltage

does

not

exceed

the

limit

32.0

under

any

conditions.

FOCUS

ADJUSTMENT

Adjust

FOCUS

Control

FLYBACK

TRANS.

(1461)

for

well

defined

scanning

lines

the

centre

area

the

screen.,

SERVICE

MODE

GENERAL

INSTRUCTIONS

ENTERING

SERVICE

MODE

Press

“XK

button

once

Press

«K

button

again

Keep

pressing

the

button,

Remote

Control.

keep

pressing.

press

button

set.

RCUT

32H

—_—_—_—_——

(Service

mode

display)

DISPLAYING

THE

ADJUSTMENT

Press

button

TV.

Adjustment

mode

Service

mode

RCUT

Item

32H

Data

Press

—

E288

SELECTING

THE

ADJUSTING

ITEMS

Every

pressing

CHANNEL

button

changes

the

adjustment

items

the

following

order.

(¥

button

for

reverse

order.)

ADJUSTING

THE

DATA

Pressing

VOLUME

button

will

change

the

value

data

the

range

from

FF.

The

variable

range

depends

the

adjusting

item.

EXIT

FROM

SERVICE

MODE

Press

POWER

button

turn

off

the

once.

OTHER

SERVICE

FUNCTION

The

following

key

entry

during

display

adjustment

provides

special

functions.

Remote

Controller

CALL/

CAUTION!

CALL/

Never

try

perform

initialization

unless

you

COI

CALL

ATTY

have

changed

the

OO’

Position

memory

IC.

G2)

(sy

button

the

set

(4)

(5)

(6)

(8)

‘a

Reset

Initialization

the

MEMORY

(QA02)

Sieh

pay

operating

protect

cut

off

cut

off

fe)

(BCUT)

(GCUT)

cut

off

-/+

Data

adjusting

(RCUT)

Contrast

correction

(CNTX)

Color

thickness

correction

note:

Displayed

differently

shown

below,

depending

the

setting

the

receiving

color

system.

COLP

(PAL)

COLC

(NTSC)

COLS

(SECAM)

Test

sound

signal

ON/OFF

kHz)

(

TEST

SIGNAL

SELECTION

)

mode

operating.

See

page.

Tint

correction

(TNTC)

Self

diagnosis

Test

signal

selection

Horizontal

line

ON/OFF

Reset

the

count

operating

protect

circuit

(Refer

the

above.)

initialization

the

MEMORY

(Refer

the

above.)

code.

babel

Service

adjusting

mode

\\\

—

Service

normal

mode

(In

service

mode,

ordinary

operations

are

possible.)

Sialic

mle

The

adjusting

item

selection

8-—

TEST

SIGNAL

SELECTION

Every

pressing

-@)

button

changes

the

test

patterns

screen

described

below

SERVICE

MODE.

Signal

off

—>

NTSC

signals

(14

patterns)

PAL

signals

(14

patterns)

About

inside

signal:

The

inside

signal

output

video

input

terminal

from

QA01,

and

not

output

with

the

inserted

into

terminal.

(Single

color

signal

can

output.)

Signals

Using

method

Purity

and

White

uniformity

CRT

Red

single

color

Red

single

color.

Stopping

and

output

Q501

Green

single

color

Green

single

color.

Stopping

and

output

Q501

Blue

single

color

Blue

single

color.

Stopping

and

output

Q501

Black

single

color

Black

single

color.

Making

black

signal

approx.

1Vp-p

QA01

White

single

color

White

single

color.

Making

white

signal

approx.

1Vp-p

QA01

W/B

adjustment

White

balance

adjustment

White

part.

. .

White

balance

adjustment/check

light

area

Black

part.

White

balance

adjustment/check

dark

area

Making

approx.

1Vp-p

signal

QA01.

Black

cross-bar

Picture

position

(horizontal,

vertical

and

slant)

CRT

adjustment

White

cross-bar

Making

approx.

1Vp-p

signal

QA01.

Black

cross-hatch

Convergence

and

vertical

amplitude

adjustment

White

cross-hatch

Making

approx.

1Vp-p

signal

QA01.

Black

cross-dot

Convergence

adjustment

White

cross-dot

Making

approx.

1Vp-p

signal

QA01.

signal

For

checking

(of

purity

drift)

white

uniformity

CRT

(Left,

right,

white)

signal

(Left,

right,

white).

. .

Check

light

area

signal

(Left,

right,

black).

. .

Check

dark

area

(Left,

right,

black)

The

adjustment

will

the

best,

the

time

when

unevenness

color

light

area

occurs,

little

longer

than

that

dark

area.

Making

approx.

1Vp-p

signal

QA01.

SERVICE

MODE

ADJUSTMENT

ITEM

ADJUSTMENT

PROCEDURE

INITIALIZATION

QA02

After

replacing

QA02,

the

following

initialization

required.

(MEMORY)

Call

the

adjustment

mode

display

following

the

steps

and

page

Press

the

CALL

button

the

Remote

Control

and

CHANNEL

buttons

the

set

simultaneously.

The

initialization

QA02

has

been

completed.

Check

the

picture

carefully.

necessary,

adjust

any

adjustment

item.

Perform

“AUTOMATIC

MEMORY’.

Set

CONTRAST

“00”,

and

BRIGHTNESS

“50”

adjusting

user

controls.

Set

the

service

mode

get

white

cross-bar

inside

pattern.

Select

BRTC

(brightness

correction),

and

adjust

the

-/+

button

reduce

the

value

that

white

portion

inside

pattern

slightly

light.

Adjust

-/+

button

increase

the

data

value

BRTC,

and

set

just

before

the

difference

between

the

belt

vertical

retrace

and

the

border

black

portion

inside

pattern

visible.

After

that,

return

vertical

height

and

contrast.

SUB-BRIGHTNESS

(Address

BRTC)

Note:

Constrict

the

picture

height

until

the

vertical

retrace

line

appears

adjusting

the

address

HIT

(HEIGHT).

Belt

vertical

retrace

HORIZONTAL

POSITION

ADJUSTMENT

(HPOS)

Set

the

service

mode,

and

get

black

white

cross-bar

signal

with

VIDEO

button

remote

hand

unit.

Select

either

HPOS

(Horizontal

picture

phase)

VPOS

(Vertical

picture

phase)

with

CHANNEL

buttons,

and

adjust

horizontal

vertical

picture

position

the

center

screen

with

VOLUME

-/+

buttons.

VERTICAL

POSITION

ADJUSTMENT

(VPOS)

VERTICAL

AMPLITUDE

ADJUSTMENT

(HIT)

Set

the

service

mode,

and

get

black

white

cross-hatch

signal

with

VIDEO

button

remote

hand

unit.

The

first

ceHHH

Select

HIT

(Vertical

amplitude)

with

Hoe

CHANNEL

buttons,

and

adjust

BERGE

vertical

amplitude

with

VOLUME

ZEEE

—/+

buttons

that

vertical

amplitude

lacks

little.

Adjust

vertical

amplitude

with

VOLUME

—/+

buttons

that

the

first

bar

cross-hatch

signal

touches

edge

screen.

~10-

Table of contents

Other Toshiba TV manuals

Toshiba

Toshiba TAC0326 User manual

Toshiba

Toshiba LC-MV14FL4 User manual

Toshiba

Toshiba 46SL417U Assembly instructions

Toshiba

Toshiba 32D46 - 32" CRT TV User manual

Toshiba

Toshiba 43VJ33 Series User manual

Toshiba

Toshiba 43 UF3D Series User manual

Toshiba

Toshiba 46H84 User manual

Toshiba

Toshiba 29VZ6DE, User manual

Toshiba

Toshiba Photofact Gold 43A61 User manual

Toshiba

Toshiba 42H83 User manual

Toshiba

Toshiba 55VX700U User manual

Toshiba

Toshiba 19S1400 Series User manual

Toshiba

Toshiba 42RV635DB User manual

Toshiba

Toshiba 43V58 Series User manual

Toshiba

Toshiba Z3030 Series User manual

Toshiba

Toshiba 21SZ5E1 User manual

Toshiba

Toshiba 20AS25 User manual

Toshiba

Toshiba 55UL605U User manual

Toshiba

Toshiba 34HF85 - 34" CRT TV User manual

Toshiba

Toshiba 50L9450 Series User manual

Toshiba

Toshiba TheaterWide 51H83 User manual

Toshiba

Toshiba 61PH18P User manual

Toshiba

Toshiba 23WL46B User manual

Toshiba

Toshiba 20AS20 User manual

Popular TV manuals by other brands

Philips

Philips Colour Television Service manual

Philips

Philips 42PF9630A/37 user manual

Hitachi

Hitachi 32FX48B operating guide

DAEWOO ELECTRONICS

DAEWOO ELECTRONICS DTQ-14V1FC Service manual

Changhong Electric

Changhong Electric uhd55b6000is Operation manual

Philips

Philips Matchline 21CE7551 operating instructions

Panasonic

Panasonic Genus TX-G10 operating instructions

Philips

Philips 25PT4523-16 manual

Sony

Sony XBR-100Z9D reference guide

Philips

Philips PR0930X3 owner's manual

Philips

Philips Brilliance 231P4QPY user manual

Samsung

Samsung 55S9 B Series Quick setup guide

Philips

Philips 32HF9385D Käyttöopas

Sharp

Sharp LC-40FI5012E user manual

Loewe

Loewe Table Stand Reference 55 user guide

Philips

Philips 32PFH5300 Service manual

Sylvania

Sylvania 6427FB owner's manual

Sanyo

Sanyo CE19LD90N-B instruction manual