Toshiba 42X3030D User manual

42X3030D LCD TV
SAME AS
37X3030D LCD TV

SERVICE MANUAL
LCDColor Television
37X3030D Ver.1.02
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
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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.
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IMPORTANT NOTICE
UserGuide
Autodesk® DWF™ Viewer is necessary to viewdrawingsand to activate thefunctions of
this system. Pleasedownload and install.
When WindowsXPSP2 is used, pop-up windows are limited by the enhanced security
function and this sample may notwork. In thatcase, performthe InternetExplorersetting
using the followingprocedure to restore normaloperation.
1.Windows version check
[My Computer(right-click)]-[Properties]
2.InternetExplorersetting
[Tools]-[InternetOptions]
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OperatingEnvironment
PC :PentiumIIIor higher recommended
Monitor :1024x768orhigherresolutionrecommended
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Note:
In caseofusing this service manualwith network connection, allocate its folderto the client
PCs as network drive to avoid any possiblemalfunction.
Orin caseofaccessingitthrough WEBsite,the smallpop-up windowappears atthe left
bottomcorneron the screen wheneversearching the location links. Thisis notmalfunction.
FunctionsProvidedon EachDrawingPage
PartsInformation Reference Function
When the characterstring ofaparton the drawing is clicked, its information is popped up at
the location. You can getany parts information immediately on the screen withoutreferring
to the maintenanceparts list. 8
PartsSearchFunction
You can search any partwithin the displayed drawing orwithin the whole schematic
diagram/board viewby specifying a location number. The pop-up windowdisplayed by
clicking a part's characterstring allowsto search thepartwithin the applicable schematic
diagram, board vieworspare parts list. 8
Acircle appears when the part is found, showing thepart'slocation within the drawing. 8
SignalLine/Connector DestinationDisplayFunction
When a name atthe end ofasignalline in a divided schematic diagramis clicked, the
destination ofthe signalis searched and the display changes to thedestination. Connecter
destinations can also be searched in the same way. 8
When two ormore search results are provided, theirdrawing names are displayed, allowing
you to choose a desired drawing to display. 8
Mouse :Amousewithwheel recommended
OS :MicrosoftWindows2000/XP
Browser : MicrosoftInternet Explorer6.0orlater
Drawingviewer :AutodeskDWFViewer 6.0
*Usethe softwarefollowingrespectivelicenseterms andconditions.
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Layer Display Changing Function
When any ofthe colorbuttonson the toolbaris clicked, itcan be selected to display desired
layerin its colorornotto display each layer. This allows you to seethe pattern layeronly by
setting otherlayers to "non-display". 8
PC Board ViewPattern Highlighting Function
When a pattern onaboard viewis clicked, itishighlighted in green. This allows easy pattern
tracing. 8
SpecifiedArea Printing Function
TheAutodesk DWF Viewerenablesto printthedisplayed drawing region asit is on a
printer. Italso allows to printa large
-sizeddrawing in multiple pieces(tile printing). 8
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IMPORTANT NOTICE
AKnown Malfunction
Autodesk® DWF™Viewerversion
(FreesoftwareprovidedthroughWEB)
Use Autodesk DWF Viewerver. 6.0.
Through WEB, ver. 6.5 has been released butwithit, the linking function in this manualmay
notwork properly.
Ifver. 6.5 has been installed,uninstall itand reinstallver. 6.0.
To getver. 6.0, click the icon,orcontactto the nearestToshiba Service Centre forfurther
assistance.
Freezingwindows opened
(Cannotclose theopenwindows)
This may happen occasionally.
In caseofencountering this,followthe procedure below.
1.Press [Ctrl], [Alt]and [Delete]keys atthe same time to engage windows security
windows.
2.Then, choose TASKmanagerand Application tab, and selectTOSHIBASERVICE
MANUAL-MicrosoftInternetExplorer.8
3.Click TASK-end.
MainWindow backforwarded
Therealcausehas notbeenfound yetbutwith this condition, nothing disturbs the service
manualoperation.
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Continue to useby operating the windows.
Precautionwhenopeningthe diagrams
Whileopening thediagrams, the menu in the leftframechanges its colorto GRAY. This is
an indication thatthe vieweris processing.
With this condition, the menu indicationcolormay stick tothe GRAYcolororWindows
may freeze ifclicking othermenu.
To avoid such things, do notoperate any otherswhile menu turns GRAYcolor.
Ifentering this, re-open the service manualorrefresh theleftframe.
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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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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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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.
4.
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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SAFETYINSTRUCTION[LCD]ASIA, EU

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.
9.
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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SAFETYINSTRUCTION[LCD]ASIA, EU

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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SAFETYINSTRUCTION[LCD]ASIA, EU

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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SAFETYINSTRUCTION[LCD]ASIA, EU

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.
4.
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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SAFETYINSTRUCTION[LCD]ASIA, EU

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.
9.
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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SAFETYINSTRUCTION[LCD]ASIA, EU

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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SAFETYINSTRUCTION[LCD]ASIA, EU

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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SAFETYINSTRUCTION[LCD]ASIA, EU

SAFETY INSTRUCTION
HandlingtheLCD Module
Safety Precaution
In the eventthatthescreen is damaged orthe liquid crystal(fluid)leaks, do notbreathein or
drink this fluid.
Also, nevertouch this fluid. Such actions could cause toxicity orskin irritation. If this fluid
should enterthemouth, rinse the mouth thoroughly with water. If the fluid shouldcontactthe
skin orclothing, wipeoff with alcohol, etc., and rinse thoroughly with water. Ifthe fluid
should entertheeyes, immediately rinse the eyes thoroughly with running water.
Precautions forHandlingthe LCD Module
TheLCDmodule can easily be damaged during disassembly orreassembly;therefore,
always observe the following precautions when handling the module.
1.
When attaching the LCDmodule to the LCDcover,position it appropriately and fasten
attheposition where the display can be viewed mostconveniently.
2.Carefully align theholes atallfourcorners ofthe LCDmodulewith thecorresponding
holes inthe LCDcoverand fasten with screws. Do notstrongly push on themodule
because any impactcan adversely affecttheperformance. Also use cautionwhen
handling the polarized screen because itcan easily be damaged.
CAUTION:The metaledges ofthe LCDmoduleare sharp,handleitwith
care.
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Handling the LCDModule