Toshiba 32A3030D User manual

SERVICE MANUAL

LCDColor Television

32A3030D Ver.2.00

This modelis classified as a green product

(*1), asindicated by the underlined serialnumber.

This Service Manualdescribesreplacementparts forthe green product. When repairing this

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

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

SOLDER.

©TOSHIBACORPORATION

IMPORTANT NOTICE

WARNING:

You are requestedthat you shall notmodifyor alter theinformation or data

provided hereinwithoutprior writtenconsentby Toshiba.Toshibashall not

be liabletoanybody foranydamages,losses,expensesor costs,if any,

incurredinconnectionwithor asaresultofsuchmodification or alteration.

THEINFORMATIONORDATAHEREINSHALL BEPROVIDED"ASIS"

WITHOUTANYWARRANTYOFANYKIND, EITHEREXPRESSORIMPLIED

WARRANTYOFMERCHANTABILITYANDFITNESS FORAPARTICULAR

PURPOSE.

Toshiba shallnotbe liableforanydamages,losses, expensesor costs,if

any,incurredinconnection withorasaresultof use ofany information or

dataprovided herein.

WARNING

GREEN PRODUCTPROCUREMENT

TheECis actively promoting the WEEE &RoHS Directives thatdefine standardsfor

recycling and reuse ofWaste Electricaland Electronic Equipmentand forthe Restrictionof

the use ofcertain Hazardous Substances. FromJuly 1, 2006, the RoHS Directive will

prohibitany marketing ofnewproducts containing the restricted substances.

Increasing attention is given to issues related to the globalenvironmental. Toshiba

Corporation recognizes environmentalprotection as a keymanagementtasks, andis doing its

utmostto enhance and improve the quality and scope ofits environmentalactivities. In line

with this, Toshiba proactively promotes Green Procurement, and seeks to purchase and use

products,partsand materialsthathave lowenvironmentalimpacts.

Green procurementofpartsis notonly confined to manufacture. The same green parts used

in manufacture mustalso be used as replacementparts.

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GREENPRODUCT PROCUREMENT

LEAD-FREESOLDER

This productis manufactured using lead-free solderas a part ofa movementwithin the

consumerproducts industry atlarge to be environmentally responsible. Lead-

free soldermust

beused in the servicing and repairofthis product.

Themelting temperature oflead-free solderis higherthan thatofleaded solderby 86 F to

104 F (30 Cto 40 C). Use ofa soldering iron designed forlead-based solders to repair

productmade withlead

free soldermayresultin damage to the componentand orPCB being

soldered. Greatcareshould be made to ensure high-quality soldering when servicing this

productespecially when soldering large components, through

-hole pins, and on PCBs as the

levelofheatrequired to meltlead-free solderis high.

WARNING: Thisproductismanufacturedusingleadfree solder.

DONOTUSELEADBASEDSOLDERTOREPAIRTHISPRODUCT!

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LEAD

FREESOLDER

SAFETY INSTRUCTION

SafetyPrecaution

1.An isolation transformershould be connectedin the powerline between thereceiver

and the ACline before any service is performed on the receiver.

2.Always disconnectthe powerplug before any disassembling ofthe product. Itmay

resultin electricalshock.

3.When replacing a chassis in the cabinet, always be certain thatallthe protective

devices areputback inplace, such as nonmetalliccontrolknobs, insulating covers,

shields, isolation resistor-capacitornetwork, etc.

Always keep tools,components oftheproduct, etc away fromthe children, These items

may cause injury to children.

5.Depending on the model, use anisolation transformerorwearsuitable gloves when

servicing withthe poweron, and disconnectthe powerplugto avoid electricalshock

when replacing parts. In some cases, alternating currentis alsoimpressed in the

chassis, so electricalshock is possible ifthe chassis is contacted with the poweron.

6.Always usethe replacementparts specified forthe particularmodelwhen making

repairs. The parts used in products requirespecialsafetycharacteristicssuch as

WARNING: BEFORESERVICINGTHISCHASSIS,READTHE"SAFETY

PRECAUTION"AND"PRODUCTSAFETYNOTICE"INSTRUCTIONSBELOW.

WARNING: SERVICINGSHOULDNOTBEATTEMPTEDBYANYONE

UNFAMILIARWITHTHENECESSARYPRECAUTIONSONTHISRECEIVER.

THEFOLLOWINGARETHENECESSARYPRECAUTIONSTO BEOBSERVED

BEFORESERVICING THISCHASSIS.

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inflammability, voltageresistance, etc. therefore, use only replacementparts thathave

these same characteristics. Use only the specified parts when the markis indicated

in the circuit diagramorpartslist.

7.Parts mounting and routing dressing ofwirings should be the same as thatused

originally. Forsafety purposes, insulating materials such as isolation tube ortapeare

sometimes used and printed circuitboards are sometimes mounted floating. Also make

sure thatwirings isroutedand clamped to avoid parts thatgenerateheatand which use

high voltage. Always followthe manufactured wiring routes /dressings.

8.Always ensure thatallinternalwirings are in accordance before re-assembling the

externalcasing aftera repairing completed. Do notallowinternalwiring to be pinched

by cabinets, panels, etc. Any errorin reassembly orwiring can resultin electrical

leakage, flame, etc., and may be hazardous.

NEVERremodelthe productin any way. Remodeling can resultin improperoperation,

malfunction, orelectricalleakageand flame, which may be hazardous.

10.Touch currentcheck. (Aftercompleting the work, measure touch currentto preventan

electric shock.)

lPlug the ACcord directly into the ACoutlet. Do NOT use an isolation transformer

forthis check.

lConnecta measuring network fortouch currents between each exposed metallic part

on the setand a good earth ground such as a waterpipe.

Annex D

(normative)

Measuring network for TOUCH CURRENTS

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lThepotentialatany point(TOUCHCURRENT)expressed as voltage and

does notexceed the following value:

Resistance valuesinorms( ).

Input resistance: 1M

Input capacitance: 200 pF

Frequency range: 15 Hzto1MHz andd.c. respectively

Note: Appropriatemeasuresshouldbe takentoobtainthe correct value incase of non

sinusoidal waveforms.

The measuringinstrument iscalibrated by comparing the frequencyfactorof withthe

solidlineinfigure F.2of IEC 60990 at variousfrequencies. Acalibration curve is

constructed showing thedeviation of fromthe idealcurve asafunction offrequency.

TOUCHCURRENT= /500 (peak value).

V: Voltmeter or oscilloscope

(r.m.s. or peak reading)

The part or contact of aTERMINAL isnot HAZARDOUSLIVE if:

Note: The limit values of =0.35 V(peak) fora.c. and =1.0Vfor d.c. correspondto

the values0.7mA(peak) a.c.and 2.0mA d.c.

a)The open-circuit voltage shouldnot exceed35 V(peak) a.c. or 60Vd.c.or, if a)isnot

met.

b)The measurement ofthe TOUCH CURRENT shall be carriedout inaccordance with

IEC 60990, withthe measuringnetworkdescribed in AnnexD of thisstandard.

The TOUCH CURRENT expressedas voltages and ,does not exceedthe

followingvalues:

- for a.c. : =35V(peak) and =0.35 V(peak);

- for d.c. : =1.0V

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ProductSafetyNotice

Many electricaland mechanicalpartsin this chassis have specialsafety-related

characteristics. These characteristics are often passed unnoticedby avisualinspection and

the protection afforded by themcannotnecessarily beobtained by using replacement

components rated forhighervoltage, wattage, etc. Replacementparts whichhave these

specialsafetycharacteristicsare identified in this manualand its supplements;electrical

components having such features are identified bythe internationalhazard symbols on the

schematic diagramandthe parts list.

Before replacing any ofthese components, read the parts listin this manualcarefully. The

use ofsubstitute replacementparts which do nothavethe same safety characteristicsas

specifiedin the partslistmay create electricalshock, fire, orotherhazards.

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SAFETY INSTRUCTION

SafetyPrecaution

1.An isolation transformershould be connectedin the powerline between thereceiver

and the ACline before any service is performed on the receiver.

2.Always disconnectthe powerplug before any disassembling ofthe product. Itmay

resultin electricalshock.

3.When replacing a chassis in the cabinet, always be certain thatallthe protective

devices areputback inplace, such as nonmetalliccontrolknobs, insulating covers,

shields, isolation resistor-capacitornetwork, etc.

Always keep tools,components oftheproduct, etc away fromthe children, These items

may cause injury to children.

5.Depending on the model, use anisolation transformerorwearsuitable gloves when

servicing withthe poweron, and disconnectthe powerplugto avoid electricalshock

when replacing parts. In some cases, alternating currentis alsoimpressed in the

chassis, so electricalshock is possible ifthe chassis is contacted with the poweron.

6.Always usethe replacementparts specified forthe particularmodelwhen making

repairs. The parts used in products requirespecialsafetycharacteristicssuch as

WARNING: BEFORESERVICINGTHISCHASSIS,READTHE"SAFETY

PRECAUTION"AND"PRODUCTSAFETYNOTICE"INSTRUCTIONSBELOW.

WARNING: SERVICINGSHOULDNOTBEATTEMPTEDBYANYONE

UNFAMILIARWITHTHENECESSARYPRECAUTIONSONTHISRECEIVER.

THEFOLLOWINGARETHENECESSARYPRECAUTIONSTO BEOBSERVED

BEFORESERVICING THISCHASSIS.

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