Zenith Dvc2200 User manual

zenith

SERVICE

MANUAL

Product

Type:

Chassis:

Manual

Series:

Manual

Part

#:

Model

Line:

Product

Year:

DVD

PLAYER

DVC

VR161

923-03437

C

2000

Model

Series:

DVC2200

DVC2250

CONTENTS

Customer

Controls

Exploded

Views

Circuit

Diagrams

P.C.Board

Layout

Published

by

Technical

Publications

Zenith

Electronics

Corporation

201

James

Record

Road

-

Huntsville,

Alabama

35824-1513

©Copyright

April

2000

by

Zenith

Electronics

Corporation

Printed

in

U.S.A.

DG

4.5k

PRODUCT

SAFETY

SERVICING

GUIDELINES

FOR

AUDIO-VIDEO

PRODUCTS

IMPORTANT

SAFETY

NOTICE

This

manual

was

prepared

for

use

only

by

properly

trained

audio-visual

service

technicians.

When

servicing

this

product,

under

no

circumstances

should

the

original

design

be

modified

or

altered

without

permission

from

Zenith

Electronics

Corporation.

All

components

should

be

replaced

only

with

types

identical

to

those

in

the

original

circuit

and

their

physical

location,

wiring

and

lead

dress

must

conform

to

original

layout

upon

completion

of

repairs.

Special

components

are

also

used

to

prevent

x-radiation,

shock

and

fire

hazard.

These

components

are

indicated

by

the

letter

“x”

included

in

their

component

designators

and

are

required

to

maintain

safe

performance.

No

deviations

are

allowed

without

prior

approval

by

Zenith

Electronics

Corporation.

Circuit

diagrams

may

occasionally

differ

from

the

actual

circuit

used.

This

way,

implementation

of

the

latest

safety

and

performance

improvement

changes

into

the

set

is

not

delayed

unti!

the

new

service

literature

is

printed.

CAUTION:

Do

not

attempt

to

modify

this

product

in

any

way.

Never

perform

customized

installations

without

manufacturer’s

approval.

Unauthorized

modifications

will

not

only

void

the

warranty,

but

may

lead

to

property

damage

or

user

injury.

Service

work

should

be

performed

only

after

you

are

thoroughly

familiar

with

these

safety

checks

and

servicing

guidelines.

GRAPHIC

SYMBOLS

The

exclamation

point

within

an

equilateral

triangle

is

intended

to

alert

the

service

personnel

to

important

safety

information

in

the

service

literature.

The

lightning

flash

with

arrowhead

symbol

within

an

equilateral

triangle

is

intended

to

alert

the

service

personnel

to

the

presence

of

noninsulated

“dangerous

voltage”

that

may

be

of

sufficient

magnitude

to

constitute

a

risk

of

electric

shock.

The

pictorial

representation

of

a

fuse

and

its

rating

within

an

equilateral

triangle

is

intended

to

convey

to

the

service

personnel

the

following

fuse

replacement

caution

notice:

CAUTION:

FOR

CONTINUED

PROTECTION

AGAINST

RISK

OF

FIRE,

REPLACE

ALL

FUSES

WITH

THE

SAME

TYPE

AND

RATING

AS

MARKED

NEAR

EACH

FUSE.

SERVICE

INFORMATION

While

servicing,

use

an

isolation

transformer

for

protection

from

AC

line

shock.

After

the

original

service

problem

has

been

corrected,

make

a

check

of

the

following:

FIRE

AND

SHOCK

HAZARD

1.

Be

sure

that

all

components

are

positioned

to

avoid

a

possibility

of

adjacent

component

shorts.

This

is

especially

important

on

items

transported

to

and

from

the

repair

shop.

2.

Verify

that

all

protective

devices

such

as

insulators,

barriers,

covers,

shields,

strain

reliefs,

power

supply

cords,

and

other

hardware

have been

reinstalled

per

the

original

design.

Be

sure

that

the

safety

purpose

of

the

polarized

line

plug

has

not

been

defeated.

3.

Soldering

must

be

inspected

to

discover

possible

cold

solder

joints,

solder

splashes,

or

sharp

solder

points.

Be

certain

to

remove

all

loose

foreign

par-

ticles.

4.

Check

for

physical

evidence

of

damage

or

deterioration

to

parts

and

compo-

nents,

for

frayed

leads

or

damaged

insulation

(including

the

AC

cord),

and

replace

if

necessary.

5.

No

lead

or

component

should

touch

a

receiving

tube

or

a

resistor

rated

at

1

watt

or

more.

Lead

tension

around

protruding

metal

surfaces

must

be

avoided.

6.

After

re-assembly

of

the

set,

always

perform

an

AC

leakage

test

on

all

ex-

posed

metallic

parts

of

the

cabinet

(the

channel

selector

knobs,

antenna

terminals,

handle

and

screws)

to

be

sure

that

set

is

safe

to

operate

without

danger

of

electrical

shock.

DO

NOT USE

A

LINE

ISOLATION

TRANSFORMER

DURING

THIS

TEST.

Use

an

AC

voltmeter

having

5000

ohms

per

volt

or

more

sensitivity

in

the

following

manner:

Connect

a

1500

ohm,

10

watt

resistor,

paralleled

by

a

.15

mfd

150V

AC

type

capacitor

between

a

known

good

earth

ground

water

pipe,

conduit,

etc.)

and

the

exposed

metallic

parts,

one

at

a

time.

Measure

the

AC

voltage

across

the

combination

of

1500

ohm

resistor

and

.15

mfd

capacitor.

Reverse

the

AC

plug

by

using

a

non-polarized

adaptor

and

repeat

AC

voltage

measurements

for

each

exposed

metallic

part.

Voltage

measured

must

not

exceed

0.75

volts

RMS.

This

corresponds

to

0.5

milliamp

AC.

Any

value

exceeding

this

limit

constitutes

a

potential

shock

hazard

and

must

be

corrected

immediately.

CM151

A.C.

Voltmeter

|

0.16uF

|

Good

Earth

Ground

he

i

Place

this

probe

such

as

the

Water

ies

on

each

exposed

Pipe,

Conduit,

etc.

1600

OHM

metal

part.

10

WATT

X-RADIATION

1.

Be

sure

procedures

and

instructions

to

all

service

personnel

cover

the

subject

of

x-radiation.

The

only

potential

source

of

x-rays

in

current

TV

receivers

is

the

picture

tube.

However,

this

tube

does

not

emit

x-rays

when

the

HV

is

at

the

factory-specified

level.

The

proper

value

is

given

in

the

applicable

schematic.

Operation

at

higher

voltages

may

cause

a

failure

of

the

picture

tube

or

high-voltage

supply

and,

under

certain

circumstances

may

produce

radiation

in

excess

of

desirable

levels.

2.

Only

factory-specified

CRT

anode

connectors

must

be

used.

3. It

is

essential

that

the

service

personnel

have

available

an

accurate

and

reliable

high-voltage

meter.

4.

When

the

high-voltage

circuitry

is

operating

properly,

there

is

no

possibility

of

an

x-radiation

problem.

Every

time

a

color

chassis

is

serviced,

the

brightness

should

be

run

up

and

down

while

monitoring

the

high

voltage

with

a

meter,

to

be

certain

that

the

high

voltage

does

not

exceed

the

specified

value

and

that

it

is

regulating

correctly.

5.

When

troubleshooting

and

making

test

measurements

in

a

product

with

a

problem

of

excessively

high

voltage,

avoid

being

unnecessarily

close

to

the

picture

tube

and

the

high

voltage

power

supply.

Do

not

operate

the

product

longer

than

necessary

to

locate

the

cause

of

excessive

voltage.

6.

Refer

to

HV,

B+,

and

shutdown

adjustment

procedures

described

in

the

appropriate

schematics

and

diagrams

(where

used).

IMPLOSION

1.

All

direct

view

picture

tubes

are

equipped

with

an

integral

implosion

protection

system;

take

care

to

avoid

damage

during

installation.

2.

Use

only

the

recommended

factory

replacement

tubes.

TIPS

ON

PROPER

INSTALLATION

1.

Never

install

any

receiver

in

a

closed-in

recess,

cubbyhole,

or

closely

fitting

shelf

space

over,

or

close

to,

a

heat

duct,

or

in

the

path

of

heated

air

flow.

2.

Avoid

conditions

of

high

humidity

such

as:

outdoor

patio

installations

where

dew

is

a

factor,

near

steam

radiators

where

steam

leakage

is

a

factor,

etc.

3.

Avoid

placement

where

draperies

may

obstruct

venting.

The

customer

should

also

avoid

the

use

of

decorative

scarves

or

other

coverings

that

might

obstruct

ventilation.

4.

Wall-

and

shelf-mounted

installations

using

a

commercial

mounting

kit

must

follow

the

factory-approved

mounting

instructions.

A

product

mounted

to

a

shelf

or

platform

must

retain

its

original

feet

(or

the

equivalent

thickness

in

spacers)

to

provide

adequate

air

flow

across

the

bottom.

Bolts

or

screws

used

for

fasteners

must

not

touch

any

parts

or

wiring.

Perform

leakage

tests

on

customized

installations.

5.

Caution

customers

against

mounting

a

product

on

a

sloping

shelf

or

in

a

tilted

position,

unless

the

receiver

is

properly

secured.

6.

A

product

on

a

roll-about

cart

should

be

stable

in

its.

mounting

to

the

cart.

Caution

the

customer

on

the

hazards

of

trying

to

roll

a

cart

with

small

casters

across

thresholds

or

deep

pile

carpets.

7.

Caution

customers

against

using

a

cart

or

stand

that

has

not

been

listed

by

Underwriters

Laboratories,

Inc.

for

use

with

its

specific

model

of

television

receiver

or

generically

approved

for

use

with

TVs

of

the

same

or

larger

screen

size.

8.

Caution

customers

against

using

extension

cords.

Explain

that

a

forest

of

extensions,

sprouting

from

a

single

outlet,

can

lead

to

disastrous

consequences

to

home

and

family.

CN-001C€

SAFETY

CONTENTS

SECTION

1

....SUMMARY

SECTION

2

....CABINET

&

MAIN

CHASSIS

SECTION

3

....ELECTRICAL

SECTION

4

...

.MECHANISM

SECTION

1

SUMMARY

CONTENTS

PRODUCT

SAFETY

SERVICING

GUIDELINES

FOR

VIDEO

PRODUCTS

...-scsccucseene

FIC

I

SERVICING

PRECAUTIONS

04.

3

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1-4

«General

Servicing

Precautions

eInsulation

Checking

Prodedure

*Electrostatically

Sensitive

Devices

SPECIFICATIONS:

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1-6

SERVICING

PRECAUTIONS

CAUTION

:

Before

servicing

the

DVD

covered

by

this

service

data

and

its

supplements

and

ADDENDUMS,

read

and

fol-

low

the

SAFETY

PRECAUTIONS.

NOTE

:

if

unforeseen

cir-

cumstances

create

conflict

between

the

following

servicing

precautions

and

any

of

the

safety

precautions

in

this

publi-

cations,

always

follow

the

safety

precautions.

Remember

Safety

First:

General

Servicing

Precautions

1.

Always

unplug

the

DVD

AC

power

cord

from

the

AC

power

source

before:

(1)

Removing

or

reinstalling

any

component,

circuit

board,

module,

or

any

other

assembly.

(2)

Disconnection

or

reconnecting

any

internal

electrical

plug

or

other

electrical

connection.

(3)

Connecting

a

test

substitute

in

parallel

with

an

elec-

trolytic

capacitor.

Caution

:

A

wrong

part

substitution

or

incorrect

polarity

installation

of

electrolytic

capacitors

may

result

in

an

explosion

hazard.

2.

Do

not

spray

chemicals

on

or

near

this

DVD

or

any

of

its

assemblies.

3.

Unless

specified

otherwise

in

this

service

data,

clean

electrical

contacts

by

applying

an

appropriate

contact

cleaning

solution

to

the

contacts

with

a

pipe

cleaner,

cotton-tipped

swab,

or

comparable

soft

applicator.

Unless

specified

otherwise

in

this

service

data,

lubrication

of

contacts

is

not

required.

4.

Do

not

defeat

any

plug/socket

B+

voltage

interlocks

with

whitch

instruments

covered

by

this

service

manual

might

be

equipped.

5.Do

not

apply

AC

power

to

this

DVD

and/or

any

of

its

electrical

assemblies

unless

all

solid-state

device

heat

sinks

are

cerrectly

installed.

6.

Always

connect

test

instrument

ground

lead

to

the

appropriate

ground

before

connection

the

test

instrument

positive

lead.

Always

remove

the

test

instrument

ground

lead

last.

Insulation

Checking

Procedure

Disconnect

the

attachment

plug

from

the

AC

outlet

and

turn

the

power

on.

Connect

an

insulation

resistance

meter(500V)

to

the

blades

of

the

attachment

plug.

The

insulation

resis-

tance

between

each

blade

of

the

attachment

plug

and

acces-

sible

conductive

parts

(Note

1)

should

be

more

than

1M-

ohm.

Note

1

:

Accessible

Conductive

Parts

including

Metal

pan-

els,

Input

terminals,

Earphone

jacks,

etc.

Electrostatically

Sensitive

(ES)

Devices

Some

semiconductor

(solid

state)

devices

can

be

damaged

easily

by

static

electricity.

Such

components

commonly

are

called

Electrostatically

Sensitive

(ES)

Devices.

Examples

of

typical

ES

devices

are

integrated

circuits

and

some

field

effect

transistors

and

semiconductor

chip

components.

The

following

techniques

should

be

used

to

help

reduce

the

incidence

of

component

damage

caused

by

static

eleciricity.

1.

Immediately

before

handling

any

semiconductor

compo-

nent

or

semiconductor-equipped

assembly,

drain

off

any

electrostatic

charge

on

your

body

by

touching

a

known

earth

ground.

Alternatively,

obtain

and

wear

a

commer-

cially

available

discharging

wrist

strap

device,

which

should

be

removed

for

potential

shock

reasons

prior

to

applying

power

to

the

unit

under

test.

2.

After

removing

an

electrical

assembly

equipped

with

ES

devices,

place

the

assembly

on

a

conductive

surface

such

as

aluminum

foil,

to

prevent

electrostatic

charge

buildup

or

exposure

of

the

assembly.

3.

Use

only

a

GROUNDED-tip

soldering

iron

to

solder

or

unsolder

ES

devices.

4.Use

only

an

anti-static

solder

removal

device.

Some

solder

removal

devices

not

classified

a

“anti-static”

can

generate

electrical

charges

sufficient

to

damage

ES

devices.

5.Do

not

use

freon-propelled

chemicals.

These

can

generate

electrical

charge

sufficient

to

damage

ES

devices.

6.

Do

not

remove

a

replacement

ES

device

from

its

protec

tive

package

until

immediately

before

you

are

ready

to

install

it.

(Most

replacement

ES

devices

are

packaged

with

leads

electrically

shorted

together

by

conductive

foam,

aluminum

foil,

or

comparable

conductive

material).

7.

Immediately

before

removing

the

protective

material

from

the

leads

of

a

replacement

ES

device,

touch

the

protective

material

to

the

chassis

or

circuit

assembly

into

which

the

device

will

be

installed.

Caution

:

Be

sure

no

power

is

applied

to

the

chassis

or

circuit,

and

observe

all

other

safety

precautions.

8.

Minimize

bodily

motions

when

handling

unpackaged

replacement

ES

devices.

(Normally

harmless

motion

such

as

the

brushing

together

of

your

clothes

fabric

or

the

lifting

of

your

foot

from

a

carpeted

floor

can

generate

static

elec-

tricity

sufficient

to

damage

an

ES

device.)

DVD

VIDEO

PLAYER

Power

supply

Power

consumtion

Mass

External

dimensions

Signal

system

Laser

Frequency

range

(digital

audio)

Signal-to-noise

ratio

(digital

audio)

Audio

dynamic

range

(digital

audio)

Harmonic

distortion(digital

audio)

Wow

and

flutter

Operations

OUTPUTS

Video

outputs

S

video

outputs

Component

video

output

Audio

output(digital

audio)

Audio

output(optical

audio)

Audio

output(analog

audio)

SPECIFICATIONS

120V,

60Hz

16W

3.2kg(7.1lbs)

430

x

88

x

215

(W

x

Hx

D)

NTSC

Semiconductor

laser,

wavelength

650nm

4Hz

to

20kHz

More

than

100dB

(EIAJ)

More

than

95dB

(EIAu)

0.008%

Below

measurable

level

(less

than

+0.001%(W.PEAK))

(ElAJ)

Temperature

:

5°C(41°F)

to

35°C(95°F),

Operation

status

:

Horizontal

1.0V(p-p),

75Q,

negative

sync.,

RCA

jack

x

1

(Y)1.0V(p-p),

75Q,

negative

sync.,Mini

DIN

4-pin

x

1

(C)0.286V(p-p),

75Q

(Y)1.0V(p-p),

75Q,negative

sync.,

RCA

jack

x

1

(Pb)/(Pr)

0.7V(p-p),

75Q

0.5V(p-p),

75Q,

RCA

jack

X

1

Optical

connector

x

1

2.0Vrms

(1kHz,

0dB),

330Q,

RCA

jack

(L,

R)

x

1

*Designs

and

specifications

are

subject

to

change

without

notice.

“Weight

and

dimensions

shown

are

approximate.

LOCATION

OF

CUSTOMER

CONTROLS

POWER

INDICATOR

SELECT/ENTER

BUTTON

STOP

BUTTON

DISC

TRAY

PAUSE/STEP

BUTTON

PLAY

BUTTON

DISPLAY

WINDOW

POWER

INDICATOR

REMOTE

SENSOR

OPEN/CLOSE

BUTTON

[DISPLAY

WINDOW

SKIP/SCAN

BUTTONS

OPERATING

STATUS

INDICATOR

CD

INDICATOR

DVD

INDICATOR

ARROW

BUTTONS

MENU

BUTTON

PROGRAM

INDICATOR

RANDOM

INDICATOR

REPEAT

PLAYBACK

MODE

INDICATORS

CHP/TRK

|

eeece

oe

ry

eocce,

“coves

‘cecce

TOTAL

PLAYING

TIME/ELAPSED

TIME

INDICATORS

CHAPTER/TRACK

NUMBER

INDICATOR

ANGLE

ICON

INDICATOR

TITLE

NUMBER

INDICATOR

REAR

PANEL

COMPONENT

VIDEO

OUT

JACKS

COAXIAL

DIGITAL

AUDIO

OUT

JACK

POWER

CORD

AUDIO

OUT(L/R)

JACKS

OPTICAL

DIGITAL

AUDIO

OUT

JACK

S-VIDEO

OUT

JACK

VIDEO

OUT

JACK

i

DOLBY

DIGITAL

AUDIO

OUT

JACKS

1-6

REMOTE

CONTROL

(DVC2200)

POWER

button

SETUP

button

ZOOM

button

MARKER

button

DISPLAY

button

PLAY

button

STOP

button

SLOW

button

CLEAR

button

AUDIO

button

SUBTITLE

button

REPEAT

button

PROGRAM

button

(DVC2250)

POWER

button

PLAY

button

REV

SKIP

button

PAUSE/STEP

button

SELECT/ENTER

button

SETUP

button

DISPLAY

button

NUMBER

button

CLEAR

button

ANGLE

button

SUBTITLE

button

AUDIO

button

ILLUMINATE

button

REPEAT

button

OPEN/CLOSE

button

MENU

button

TITLE

button

SEARCH

button

RETURN

button

SELECT/ENTER

button

PAUSE/SETUP

button

SCAN

button

SKIP

button

SOUND

buttons

ANGLE

button

a-b

button

RANDOM

button

DVD/VCR/CATV/TV

Selector

Switch

FWD

button

STOP

button

OPEN/CLOSE

button

ARROW

(

volume/channet)

buttons

RETURN

ov

neu)

button

3D

SOUNDwute)

button

PROGRAM

button

MENU

button

TITLE

buttons

MARKER-SEARCH

button

ZOOM

button

RANDOM

button

A-B

button

FWD/REV

SLOW/SCAN

Shuttle

Ring

1.

DISASSEMBLY

CABINET

DISASS

SECTION

2

CABINET

&

MAIN

CHASSIS

CONTENTS

BEIMIBECY

sbedectceesscwistacnebceadtcsensalcaswastnuncen

can

saehévanaat

saupunewamenwedarsdeaveuedacneceescaseeduasen

CIRCUIT

BOARD

DISASSEMBLY

.....1ccsessssessssscssecssnsccssnsndersenersnsencseossecadsonsecessenseerssenecsusnaneacaesses

Be

ERPEO

DED

WE

WY

S

diticksrccasstactcaaeencasmneeshaseuaatrieeapee

cate

eee

ee

tates

4,

Cabinet

and

Malin

Frame

SOCt

On

iis.

ssccsscvdsuvesissseeatycennnscewvecasccveienceveccsspsesanteasncsesssseccgestascenscoes

2,

PACKING

ACCESSOrY

SECTION

si

siseicncactuwsctesenecsvesstansanceccsetasouesuasiudaweanycdesccncuseeteneacnpeiienenapeonstent

J,

REMOTES

COntFol:

SOCOM

saisisesie.eccccssscei

acct

success

cscckcaciios

sudabecdeoeceannnwaddudivatusunupaeveauandsatececevnenetecis

DISASSEMBLY

CAUTION

BEFORE

STARTING

SERVICING

Electronic

parts

are

susceptible

to

static

electricity

and

may

easily

damaged,

so

do

not

forget

to

take

a

proper

grounding

treatment

as

required.

Many

screws

are

used

inside

the

unit.

To

prevent

missing,

dropping,

etc.

of

the

screws,

always

use

a

magnetized

screw

driver

in

servicing.

Several

kinds

of

screws

are

used

and

some

of

them

need

special

cautions.

That

is,

take

care

of

the

tapping

screws

securing

molded

patrs

and

fine

pitch

screws

used

to

secure

metal

parts.

If

they

are

used

improperly,

the

screw

holes

will

be

easily

damaged

and

the

parts

can

not

be

fixed.

CABINET

DISASSEMBLY

3.

Front

Panel

1.

Top

Case

1.

Eject

the

disc

tray.

(See

Fig.

2-2)

1.

Release

7

screws

(A).

(See

Fig.

2-1)

2.

Remove

the

tray

door.

(See

Fig.

2-2)

2.

Lift

the

top

case

with

holding

the

back

of

it,

3.

Release

2

screws

(B).

and

remove

it

in

the

direction

of

the

arrow

4.

Pull

the

front

pane!

toward

you

while

pressing

7

stoppers

to

disengage,

and

remove

the

front

panel.

(See

Fig.

2-3)

2.

Tray

Door

1.Eject

the

disc

tray.

2.Lift

up

the

tray

door

in

the

direction

of

the

arrow.

Tray

Door

2-2

CIRCUIT

BOARD

DISASSEMBLY

Note:

Before

removing

the

main

circuit

board,

be

sure

to

shortcircuit

the

laserdiode

output

land.

After

replacing

the

main

circuit

board,

open

the

land

after

inserting

the

flexible

connector.

(Refer

to

Mechanism

Disassembly)

1.

Disassembling

of

Main

Circuit

Board

and

Interface

Board

2.

Digitron

and

Key

Circuit

Board

1.

Remove

the

top

case.(See

Fig.

2-1)

1.

Remove

the

front

panel.(See

Fig.

2-3)

2.

Remove

12

screw

(C).

2.

Release

4

screws

(E),

and

remove

the

digitron

3.

Remove

the

deck

from

Interface

Board.

circuit

board.

4.

Remove

Main

Circuit

Board

from

Interface

Board.

5.

Remove

2

screw

(D).

6.

Remove

Interface

Board

from

the

chassis.

Power

Code

2-3

EXPLODED

VIEWS

1.

Cabinet

and

Main

Frame

Section

2-4

2.Packing

Accessory

Section

605

CABLE

&D

Ge,

Bi

BATTERY

ge

eS

*

ya

00)

REMOCON

.)

(07

OWNER'S

MANUAL

6D

04)PACKING

SHEET

803)

PACKING

3.Remote

Control

Section

(DVC2200)

(DVC2250)

(2)

ae

e)

Ss

Oo

Y|

an

:

Re

=

ol

itr;

;

ie

iT!

(

A

*

jiovea

OCU

iy

fe

BG/00aB

7

0008

f,

ji

(i

ja

i

see

a

aS

ee

eee,

chee

fee

2058

CECE

CCeGe

TL

2.Packing

Accessory

Section

(06>

CABLE

BATTERY

Coe,

-

07)

OWNER'S

MANUAL

(04)PACKING

SHEET

Cn

a

03)

PACKING

(906)

REMOCON

03>

PACKING

802)

BOX

CARTONX

3.Remote

Control

Section

(DVC2200)

(DVC2250)

Q

=

OG

&

C0008

Cee

(4

CCEE

_£&e

S588

[2

oy

L

Sf

SECTION

3

ELECTRICAL

CONTENTS

ELECTRICAL

TROUBLESHOOTING

GUIDE.

cncite

cn

caeanteieeeacknaiasitiens:

3-2

Ts

POWER

SMP

ss)

CMGI

sccstscecscite

ness

devacuncausd

cut

cansileces

nsec

comeeeeace

cewchadenstauebcodeaedaverveseccectmearssauebeaades

3-2

EE

COMEE

CEC

EINE

«co

cewctceciede

savas

sane

sacpabvcuustevesaiandeesanuss

caw

auassdunuacesseaeaseveasasencacendeatent

asta

haaanaaead

3-3

BIN

eC

RATE

ass

Sep

acs

w

amet

omen

ba

heron

kano

pans

au

imas

meee

wos

somal

een

eumeuane

ntsc

cepmenaoeautentn

3-6

4.

Front

Circuit(Digitron

&

K@Y)

..sssssssssesssssescesssssesssessesssessesstssessssssnsscssessesessesersecseeesenseneeaeeaces

3-7

DiI

SHCEVOLGCIN

CLINE

waveniscunssuvasvesesavnsavuxssgnntonve

savahustedegnuadevaasanqeabeneusveniarereesucdueevanceusnianniniaeamnteass

3-8

BROCK:

DIAGRAMS

sisi

oiscs

cca

scss

ear

iacsestad

einoeoleet

cence

ia

eiae

3-12

Te

OVErall

BIOGK:

DIG

FAN

ss

ssncsisisine

cas

vcncecsnsdextanteds

savacetens

sancdavaqncscssncebnessdcewesssevasdvelecenesinccesstcaccrene

3-12

2::POWEF(SMPS)

BIOGK

DIAG

W

crisndssscnenccssnsonnssescnancnvtsnstvncsassentenauteaceeresdccuswvtssecaaseevenwnrsdeensees

3-13

3.

RF/CD

DSP/DVD

servo

Block

Diagram

......:..:sccsscscsessestessecseesseecesensseseeneeseesees

3-14

A,

PUGIO

BIOCK:

DIORA

iia

dicnicducsenscsitas

cusisesvite

sacawsieilsxssinuwat

sina

cahetucw

ch

wsbeutesseauesatwadsaanapanuantemveaancvers

3-15

B.IMPEG

BIOCK

DIGQiaM

sccxicpancoecnuctesctcasuscdeuhavecancuade

su

cahenscaecnsceuscatasiu

alissueatvvnneGdapewaasataadeceiaeeears

3-16

GEE

CON

BOCK

Dirac

wiscssc

ccs

tac

acts

acces

eh

ievecean

ec

vncccnmediesddi

cavitencteautendesincdcencuevennneeneececocereavatuten

3-17

ROULETTE

GRAINS

oseccce

cicadas

cee

deen

dees

farecanhexvieennncde

onan

3-18

4.

POWGr:(SMPS)

CIreenlt:

DAI

IN

a

stisesss

sencscanceanncacinasivaniuennsnead

deetsdencucveuniUeaundewuedeniiaesccaemseuaateende

3-18

2.

/DVD:

DSP

CIFCUIE

DIRQ

PAIN

cssce

iets

cacinncetieusadeicnnttessnanncnd

ccausacsdstecacagteananhepenvcnedvaadtats

auewenedeneaunewseede

3-20

3.

Drive:

&

RE

CIrGult

DIAGramy

cess

iiecsicedcavscuedaisaensnennvsdenavednaaiwadtndnadesinctcadstacusacanabeshetsetndesedunedeauu

3-22

A.

MPEG

GCICUIC

Dia

rene

cassaereeni

civtaaecansunei

tn

ducts

teecedt

saaveiystwenucdusasssteunanesaueuvaacounageluesenvonnmsanuasaday

3-24

Be

MVM

ORNS

sap

stacss

a

cao

actu

ywsinsuand

vac

one

admires

ou

atnstedsocesle

vesansuahassneaarunsaceltouutacusauustaudehauetnmtaancesnacitae

3-26

5:

AUGIO

DM

&

5.1

CH

Clroult

Diagram

viaivsntcascscistaiscecieecsaseiseseenananinsnsacatntenevesnianvendstsstanatecsuloune

3-28

6.

POOMIEK

PANGS

ios:

seasececes

tas

cocte

ded

ceusi

pe

lense

uae

dimaadunccacaatnetencseicnidnaeadsaanteniaaenubinaniananinnmanee

3-30

Fc

DIGITRON

:&

Key:

Circult

Di

ceenin

cs

eisscehcsice

seca

ceded

inet

feed

at

ri

castes

asiesaaninavasenuieedvaantensvecddsdanaenne

3-32

&.

Jack

Cireult,

DIG

Gra.

ciciseccvescececacse

sees

sencdtccevecetcascassiseiccenennthasersennctreedeusdsudeasneseaudsenneasenntewesina

3-34

PRINTED

CIRCUIT

DIAGRAMS

wiiescis

cn

cccdccecccstaticaccaescaneadesuaesttaiecsatsteseaianiatevactndeasstresiindouces:

3-36

AABVEPAAIN

CBORD

iodo

ck

cosas

cetinc

Sea

at

eb

occa

ad

aw

ope

sm sa

ag

ae

a

me

needa

ne

anata

3-36

2:

POWER,

A/V,FRONT

P.C.

BOARD

iscsi

isecciincssinccstnacssnveassssasivesesuassoundascdecvesdacdedencuseadsenceinerenuies

3-38

SREY

PC,

BOARD

sa

cccasnccescsnecstucp

ints

natdawnsnnenee

cues

ctiasitwestdateied

snndundsiuw

cad

behaved

asanaduand.

eens

sessnaatenrans

3-40

4.-POWER.

CED

PC

BOARD

wai

sisatsieucs

cowl

cewaacxeciwitcaceditacavusnictulsmncnaesiutuanieiraninevesiasccennsecuseetorctantun

3-41

ELECTRICAL

TROUBLESHOOTING

GUIDE

1.

Power(SMPS)

Circuit

A.

No

VF+

No

5V_D

or

5V_A.

Is

5.2VA

section

working?

YES

Is

oscillation

present

at

the

|

NO

Is

5.2VA

section

working?

YES

NO

|

Is

oscillation

present

at

the

anode

of

D109?

YES

Replace

D109.

No

5.2VA.

Check

R127,

128.

(SHUTDOWN

CKT

Is

5.2V

applied

to

1C102

1?

NO

Check

Fuse(F101).

YES

Is

there

a

DC

voltage

at

the

(+)

terminal

of

BD101?

YES

Base

of

Q108?

YES

Replace

Q108.

Check

L103,

C116,

117.

Replace

BD101.

(Bridge

rectifier)

NO

Is

R111

19?

YES

Check

D105.

Replace

R111.

Replace

Q101,

102.

2.

U-COM

Circuit

A.

No

Power

q

POWER

ON

)

NO

Does

Bar

appear

at

FLD?

YES

NO

Is

P5901

YES

Do

all

five

Bars

appear?

connected

normally?

NO

Does

Logo

appear

NO

Check

power.

on

the

screen?

(Refer

to

power)

YES

If

power

is

normal

NO

Is

P5901

24

normal?

Refer

to

Front

Part

YES

Is

oscillation

of

Sent

sonnei?

Check

the

oscillation

ne

waveform

on

A[00:21]

and

D[00:15]

of

IC50

Check

short

NO

Are

IC503

Pins

14,

28

and

29

normal?

Check

short.

Are

IC506

Pins

7,

8

normal?

YES

Replace

IC501

or

IC503.

Replace

IC506.

Replace

Main

B/D.

B.

Audio

abnormal

AUDIO

ABNORMAL

a

A

Check

Audio

jack.

|

YES

(If

OK)

Check

PLL

FC

of

MPEG

part.

|

YES

(If

OK)

Refer

to

Audio

part.

|

YES

(If

OK)

Refer

to

MPEG

part.

YES

(If

OK)

Replace

B/D.

D.

Open/Close

abnormal

Check

the

connection

of

MD.

|

C.

Video

abnormal

VIDEO

ABNORMAL

Check

Video

jack.

|

YES

(If

OK)

Na,

(

™

Refer

to

Video

part.

YES

(If

OK)

Refer

to

Encoder

part.

|

YES

(If

OK)

Refer

to

MPEG

part.

YES

(If

OK)

Replace

B/D.

OPEN/CLOSE

ABNORMAL

Check

Front.

YES

(If

OK)

Check

the

connection

of

P5901.

Reconnect

it.

Check

IC501

Pins

13,

14.

Refer

to

SERVO

part.

|

3-4

E.

Picture

abnormal

PICTURE

ABNORMAL

Check

the

disc.

Refer

to

Servo

part

|

If

OK

o~

A

Check

PLL

IC

of

MPEG

part

|

YES

(If

OK)

Check

DSP

|

YES

(If

OK)

Check

MPEG

YES

(If

OK)

Replace

B/D

F.

Dise

Error

C

DISC

ERROR

)

Check

Disc

YES

(If

OK)

Refer

to

Servo

part

|

YES

(If

OK)

Replace

B/D

3.

MPEG

Circuit

4g

Power

is

on

»

NO

Does

LG

Logo

appear

.

enihe-sersen?

Check

power

&

clock.

YES YES

NO

<Js

MPEG

data

signal

normal?

vues

ert

output

OK

Check

MPEG

Decoder

input

signal.

Check

CD/DVD

DSP

output

signal.

OK

Check

MPEG

Decoder

input

signal.

NO

|

Check

CD/DVD

DSP

output

signal.

OK

Check

MPEG

Decoder

input

signal.

Check

clock

signal

|

;

NO

Is

error

signal

normal?

Moving

picture

of

the

video

CD

play

on

me

screen

<s

MPEG

data

signal

normal?

_

OPTION

lf

included

veD

function.

N

Is

Clock

normal?

2

Does

the

audio

sound

output

from

MPEG

decoder?

Does

the

audio

sound

output

normally?

3-6

Zenith DVC2200 User manual

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