Toshiba 32WL66Z User manual

SERVICE MANUAL

Color Television

32WL66Z Ver.1

Thismodelis classified as a green product

(*1), as indicated by the underlined serialnumber.

ThisService Manualdescribes replacementpartsforthe green product. When repairing this

green product, usethe part(s)described in this manualand lead-free solder (*2).

For(*1)and (*2), referto GREENPRODUCTPROCUREMENT and LEAD-FREE

SOLDER.

©TOSHIBACORPORATION

Page

SAFETY INSTRUCTION

Handling theLCDModule

Safety Precaution

In the eventthatthe screen is damaged orthe liquid crystal(fluid)leaks, do notbreathein or

drink this fluid.

Also, nevertouch this fluid. Such actions could cause toxicity orskin irritation. Ifthis fluid

should enterthe mouth, rinse the mouth thoroughly with water. Ifthe fluid should contactthe

skin orclothing, wipe offwith alcohol, etc., and rinse thoroughly with water. Ifthe fluid

should enterthe eyes, immediately rinsethe eyes thoroughly with running water.

Precautions forHandlingthe LCD Module

The LCDmodule can easily bedamaged during disassembly orreassembly;therefore,

always observe thefollowing precautions when handling the module.

When attaching the LCDmodule to the LCDcover, position itappropriately and fasten

atthe position wherethe display can beviewed mostconveniently.

2.Carefully align the holes atallfourcorners ofthe LCDmodulewith the corresponding

holes inthe LCDcoverand fasten with screws. Do notstrongly push on the module

because any impactcan adversely affectthe performance. Also use caution when

handling the polarized screen becauseitcan easily be damaged.

CAUTION:Themetaledgesofthe LCDmoduleare sharp,handleit with

care.

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Handling theLCD Module

3.Ifthepanelsurface becomes soiled, wipe with cotton ora softcloth. Ifthis doesnot

remove the soiling, breatheon the surface and then wipe again.

Ifthepanelsurface is extremely solied, use aCRT cleaneras a cleaner. Wipe offthe

panelsurface by drop the cleaneron thecloth. Do notdrop the cleaneron thepanel.

Pay attention notto scratch the panelsurface.

4.Leaving waterorotherfluids on the panelscreen foran extended period oftimecan

resultin discolorationorstripes. Immediately remove any type offluid fromthe screen.

5.Glass is used in the panel, so do notdrop orstrikewith hard objects. Such actions can

damage the panel.

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Handling theLCD Module

6.CMOS-LSIcircuitry is used in the LCDmodule, so avoid damage dueto static

electricity. When handling the module, use a wristground oranchorground.

7.Do notexpose theLCD module to directsunlightorstrongultravioletrays foran

extended periodoftime.

8.Do notstore the LCDmodule belowthe temperature conditions described in the

specifications. Failure to do so could resultin freezing ofthe liquid crystaldue to cold

airorlossofresilience orotherdamage.

9.Do notdisassemble theLCDmodule. Such actionscould resultin improperoperation.

Page

Handling theLCD Module

10.When transporting the LCDmodule, do notuse packing containing epoxy resin

(amine)orsilicon resin (alcoholoroxim). The gas generated by these materialscan

cause loss ofpolarity.

Page

Handling theLCD Module

PCB LAYOUT

Page

HDMI

CORTEZ Plus

Analog

Front

End

(16port)

Video

Decoder

MUX

VBIData

Processor

DCDi

MADi

Scaling

BEP

OSD

LVD

Micro-

processor

IRI/F AD

GPI

Digital

InputA

Digital

InputB

2nd

Channel

Process

Cortez

Regulator

EEPROM

DDRRAM

FLASHROM

SIGNALBOARD

FLI8538

Input

Terminal

(Video)

CVBS

S-VIDEO

YCbCr

PCIN

+LowB

POWERBOARD

SoundAMP

ACINPUT&

Power

AVBOARD

TIF

PANEL

PANELI/F

Standby

uCON

HDMI

MTS+

APRO

MSP

PLL

VOC

SPEAKER

DACAMP

HP_AMP

Headphone

Input

Terminal

(Audio)

CVBS(L/R)

S-VIDEO(L/R)

YCbCr(L/R)

PC_IN(L/R) SW

SCHEMATIC DIAGRAM

Precaution

Note:

1.RESISTOR

Resistance isshownin ohm[K=1,000, M=1,000,000]. Allresistors are 1/6 W and 5 %

tolerance carbon resistor, unless otherwisenoted as thefollowing marks.

2.CAPACITOR

Unless otherwise noted in schematic, allcapacitorvalues less than 1 areexpressed in

µF, and thevalues more than 1 in pF.

WARNING: BEFORESERVICINGTHISCHASSIS,READ THE "X-RAY

RADIATIONPRECAUTION"FORDIRECTVIEWCTVONLY,"SAFETY

PRECAUTION"AND"PRODUCTSAFETYNOTICE"OFTHISMANUAL.

CAUTION:Theinternationalhazard symbols" "intheschematicdiagram

and the partslistdesignatecomponentswhichhave specialcharacteristics

importantfor safetyand

shouldbe replaced onlywithtypesidenticaltothose inthe originalcircuit

or specified inthepartslist.

The mountingpositionofreplacementsistobe identicalwithoriginals.

Before replacinganyof thesecomponents,read carefullytheSAFETY

PRECAUTIONand PRODUCTSAFETYNOTICE.

Donot degrade thesafetyofthe receiverthrough improper servicing.

1/2R

MetalorMetaloxide of1/2 watt

1/2S

Carbon composition of1/2 watt

1RF

Fuse resistorof1 watt

10 W

Cementof10 watt

±10 %

±2 %

±1 %

Page

Allcapacitors are ceramic 50 V, unless otherwisenoted as thefollowing marks.

3.The parts indicated with " "have specialcharacteristics, and should bereplaced with

identicalparts only.

4.Voltages read with DIGITAL MULTI-METERfrompointindicated to chassis ground,

using a colorbarsignalwith allcontrols atnormal, line voltage atnominalACvolts.

5.Waveforms are taken receiving colorbarsignalwith enough sensitivity.

6.Voltage readingshown are nominalvalues and may vary ±20 %exceptH.V.

Electrolytic capacitor

= Mylarcapacitor

Page

IMPORTANT NOTICE

WARNING:

Youare requested thatyoushallnot modifyoralter theinformationor data

provided hereinwithout prior writtenconsentbyToshiba.Toshiba shall not

be liabletoanybody for any damages,losses,expenses or costs,ifany,

incurred inconnection withor asaresultofsuch modification oralteration.

THE INFORMATIONORDATAHEREINSHALLBEPROVIDED"ASIS"

WITHOUTANYWARRANTYOFANYKIND, EITHEREXPRESS ORIMPLIED

WARRANTYOFMERCHANTABILITYANDFITNESSFORAPARTICULAR

PURPOSE.

Toshibashallnot be liablefor anydamages,losses,expensesorcosts,if

any,incurred inconnectionwithoras aresultofuse ofanyinformationor

dataprovided herein.

Page

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