Panasonic Viera TH-42PW3 User manual

SCHEMA*99
Service Manual
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ORDERNO. ITD0008011C0
D10
WidePlasmaDisplay
lTH-42PW3/TH-42PWD3
GP3DChassis
Specifications
PowerSource:AC230V50/60Hz(ABandEversion)
AC110V50/60Hz(Uversion)
PowerConsumption:295 W
2.3W(stand-bycondition)
1.4W(Mainoffcondition)
Terminal:
AV
VideoInput/ Output(BNC)
1.0Vp-p(75ohm)
NTSCPALPAL-60 SECAMM-NTSC
S-Videoinput(MiniDin4pin)
Y1.0Vp-p(75ohm)
C0.286 Vp-p(75ohm)
Audio0.5Vrms(RCAtype)
Component/RGBIn(RCAtype)
Y/G1.0Vp-p(includingSync.)
PB/B±0.35 Vp-p
PR/R±0.35 Vp-p
HD1.0-5.0Vp-p
VD1.0-5.0Vp-p
PCVGA
SVGAXGASXGA UXGS(Compatible)
(High-densityD-sub15 pin)
Audio(3.0mm)0.5Vrms
SpeakersExternalspeakers
Impedance6ohmratedinput8Wormorerecommended.
SERIALRS-232Ccompatible(D-Sub9PIN)
TUNEROptional(High-densityD-Sub26PIN)
Display:Type42 inch(106 cmdiagonal16:9)+RC
No.ofPixels(W853 xH480)
No.ofDots(W2559 xH480)
Dimensions:
Displayunit
Height610 mm
Width1020 mm
Depth89 mm
Weight(Mass)29.5kgnet(mainunit only)
33.7kg(withspeakers)

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8AdjustmentProcedure
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8.1+BSet-up
8.1.1 Item/Preparation
8.1.2 Adjustments
8.2DriverSet-up
8.2.1 Item/Preparation
8.2.2 Adjustments
8.3 Initialization PulseAdjust
8.4P.C.B.(PrintedCircuit Board)exchange
8.4.1 Caution
8.4.2 Quick adjustmentafterP.C.B.exchange
8.5AdjustmentVolumeLocation
8.6TestPointLocation
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8.1+BSet-up
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8.1.1 Item/Preparation
8.1.2 Adjustments
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8.1.1Item/Preparation
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1.InputaGreyscalesignal.
2.Setthepicturecontrols:-
Picturemode:Normal
Whitebalance:Normal
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8.1.2Adjustments
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Adjustand confirmindicated testpointforthespecifiedvoltage.
Adjust
Confirm
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Name Volume Voltage TestPoint Remarks
Vsus R605 170V±1V P11pin2
Vda R590 67V±0.5V
P12pin1
Name Voltage TestPoint Remarks
15V 15.4V±0.5V P23pin1
15V 15.2V±0.5V P7pin1
12V 11.8V±0.5V P25pin1
Audio12V 12.5V±0.8V P5pin7
5V 5.1V±0.3V
P25pin5
STB5V 5.0V±0.3V
P27pin4
Fan15V 15.4V±0.5V
P10pin1
Fan5V 5.1V±0.3V
P10pin4
PFC 380V±15V
C468(+),C468(-)

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8.2Driver Set-up
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8.2.1 Item/Preparation
8.2.2 Adjustments
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8.2.1Item/Preparation
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1.InputanAPL100 %whitesignal.
2.Setthepicturecontrols:-
Picturemode:Normal
Whitebalance:Cool
Aspect:16:9
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8.2.2Adjustments
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Adjustdriversection voltagesreferring thepaneldataon thepaneldatalabel.
*SeethePanellabel.
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Name
TestPoint Voltage Volume Remarks
Vsus
TPVSUS (SS)
170V±1V R605 (P)
Vbk TPVBK(SC) 155V±5V R6443(SC)
Ve TPVE(SS) 158V±1V R6774(SS)
Vset TPVSET(SC) 218V±6V ---
Vad TPVAD(SC) -90V±1V R6477(SC)
Vscn TPVSCN(SC) Vad*+118V±2V ---
Vda TPVDA(SS) 67V±1V R590 (P)

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8.3Initialization PulseAdjust
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1.InputaCrosshatch signal.
2.Setthepicturecontrols:-
Picturemode:Normal
Whitebalance:Cool
Adjusttheindicated testpointforthespecified waveform.
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Testpoint Volume Level
T1
TPSC1(SC)
R6523(SC)
20±15 Sec
T2
TPSS1(SS)
R6557(SC)
170 ±20 Sec

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8.4P.C.B.(PrintedCircuitBoard)exchange
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8.4.1 Caution
8.4.2 Quick adjustmentafterP.C.B.exchange
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8.4.1Caution
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1.To removeP.C.B. , wait 1 minuteafterpowerwasofffordischargefromelectrolysis
capacitors.
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8.4.2Quickadjustmentafter P.C.B. exchange
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*SeethePanellabel.
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P.C.B. Name TestPoint Voltage Volume Remarks
PBoard Vsus TPVSUS (SS) 170V±1V R605 (P)
Vda TPVDA(SS) 67V±1V R590 (P)
SCBoard
Vbk TPVBK(SC) 155V±5V R6443(SC)
Vad TPVAD(SC) -90V±1V R6477(SC)
Vset TPVSET(SC) 218V±6V ---
Vscn TPVSCN(SC) Vad+118±2V ---
SS Board Ve TPVE(SS) 158V±1V R6774(SS)
D, JBoard
White blance, Pedestal andSubbrightness forNTSC, PAL, HD, PCand625isignals

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8.5AdjustmentVolumeLocation
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8.6TestPointLocation
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9Servicemode
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9.1 CAT(computerAided Test)mode
9.1.1 IICmode
9.1.2 CDmode
9.1.3 SDmode
9.2 IICmodestructure(followingitemsvalueissampledata.)
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9.1CAT(computer Aided Test)mode
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To exit the CATmode ,accessthe IDmode and switch offthemain power.
9.1.1 IICmode
9.1.2 CDmode
9.1.3 SDmode
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9.1.1IICmode
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SelecttheIICmodeby Up/Downbutton on theremotecontrolatthefrontpageofCATmodethen
pressthe Action button on theremotecontrol.
Subjectand itemarementioned on page14.
Toexit theIICmode,pressthe Rbutton on theremotecontrol.
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9.1.2CD mode
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SelecttheCDmodeby Up/Downbutton on theremotecontrolatthefrontpageofCATmodethen
pressthe Mutebutton on theremotecontrolmorethan 5 sec.
Micomsoftwareversion (IC9354),thisversion can beupgradeby
1.replaceofnewversion IC
2.Loadingthenewversion softwarefromloadertool, TZSC07036.
Memorydatachange
To exit theCDmode,pressthe Rbutton on theremotecontrol.
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9.1.3SDmode
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SelecttheSDmodeby Up/Downbutton ontheremotecontrolatthefrontpageofCATmodethen
presstheAction button on theremotecontrol.
Toexit theSDmode,pressthe Rbutton on theremotecontrol.
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9.2IICmode structure(followingitemsvalueis
sampledata.)
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