Panasonic CT-32HC14J Manuale utente

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Service Manual

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MTNC040314C1

B19 Canada:B05

Color Television

lCT-32HC14J

CT-32HC14UJ

DX4M

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8Autodiagnosisfeature

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Thisreceiverincorporatesanewselfdiagnosisfeature.Withthisnewfeaturewill beeasierforthe

techniciantodetectthefailures.ThereisaLEDlocatedby thekeyboardon thefrontpanel,thisLED

willstartflashingwhenafailureisdetectedby thecircuitslocatedinspecificareas,dependingon

howmany timestheLEDisflashing, thiswill tell you whatcircuitshouldbechecked. Makeacount

offlashingandseethetableshownbelow.Pleaseusethisfeatureeffectivelyespecially

forintermittentproblems.

AFTERTHECOUNT

Proceed tocheckthatarea, verifywhatboardistheproblemlocated, thiswaytheareatocheckwill

bereduceduntil thefailureisfound.

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SOSoffrontLED

FLASHESPOSSIBLECIRCUITSOS

1POWER+140SOS1

2LOWB+D.C.SOS2

4HIVOLTAGEHHS

HHS

5IC4511GC2M

6IC4518GC2S

8AUDIOAMP SOS4

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9EEPROMcopyjig

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ThisCTVhasafeaturethatallowstocloneorback-up mainEEPROMdataadjustmentsfroma

CTVto otherby connectingajigtotheCTVset.AjigpartnumberTXFJIG01SER, isavailable

throughMatsushita/PanasonicServices.

Preparation:

Toconnectthisjig, removethelowerbackcoverasinstructedon disassemblyforservicesection on

thisservicemanualand insertthejigintoA15 connectorlocatedon theA-Board.(Seefigure)

EEPROMcopyjigconnection

Proceduretocopy data:

1.Entertoservicemodeanddisplayservicemenu.

2.Select“AREA”DACand thenpressACTION button on remotetoenter.PressVOLright/left

toselectoneofthefollowingoptionsthenpressACTION:

¡SelectALLtocopy all main EEPROMdata

¡SelectADJtocopy onlyadjustmentdata.

¡SelectFIXtocopy onlyfixdata

3.Tocopy datafrommain EEPROMto jig, select“IN EX”DACand pressACTION button on

remote.

4.Tocopy datafromjigtomain EEPROM,select“EX IN”DACand pressACTION button on

remote.

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12 Chassis serviceadjustmentprocedures

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Allserviceadjustmentsarefactorypresetand shouldnotrequireadjustmentunlesscontrolsand/or

associatedcomponentsarereplaced.

140.0_VB+ voltagecheck

1.SettheBRIGHTand PICTUREtominimumby usingthePICTUREmenu.

2.ConnecttheDVMonTPD144(D-Boardby D2connector)and coldground

3.ConfirmthatB+voltageis144.0V±1.5V.ThisvoltagesuppliesB+ tothehorizontaloutput

and flybackcircuits.

Sourcevoltagechart

120VAClineinput.SettheBRIGHTand thePICTUREtominimumby usingthePICTUREmenu.

Usecold orhotground forthe(-) lead oftheDVMasneeded

A-BOARDVOLTAGE

STBY7V(BYIC804) A-BoardTPP97.5±0.6V

MAIN9V(BYIC875)A-BoardTPA79.0V±0.5V

MAIN5V(BYIC871)A-BoardTPA85.0V±0.3V

GC2.5V(BYIC872) A-BoardTPA92.5V±0.2

STBY3.3V(BYA1CONNECTOR)A-BoardTPA163.3V±0.2V

D-BOARDVOLTAGE

+B2(BYD2CONNECTOR)D-BoardTPD144144.0±1.5V

25V(BYD40 CONNECTOR)D-BoardTPD25027.5±2.0V

15V(BYD4CONNECTOR)D-BoardTPD15015.7±1.5V

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Highvoltagecheck

1.SelectanactiveTVchanneland confirmthathorizontalisinsync.

2.AdjustBRIGHTNESS and PICTUREusingPICTUREicon menu sovideojustdisappears.

3.ConfirmB+144 ±1.5Viswithinlimit.

4.Usingahighvoltagemeterconfirmthatthehighvoltageis33.0kV±1.0kV

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-15V(BYRL451) D-BoardTPD151 -16.0V±1.5V

SOUND+(BYD4CONNECTOR)D-BoardTPD160

16.5V±1.0V

SOUND-(BYD4) D-BoardTPD161 -16.5V±1.0V

220V(BYD2CONNECTOR)D-BoardTPD7210V±5.0V

12V(BYIC433)D-BoardTPA612V±0.5V

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14 Service mode(electronicadjustments)

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ThisreceiverhaselectronictechnologyusingtheICbusconcept.Itperformsasacontrolfunction

and it replacesmany mechanicalcontrols.Insteadofadjustingmechanicalcontrolsindividually,

many ofthecontrolfunctionsarenowperformedbyusing“on screen displaymenu”.(Theservice

adjustmentmode).

NOTE

Itissuggestedthatthetechnicianreadsallthewaythroughand understandthefollowingprocedure

forentering/exitingtheserviceadjustmentmode;thenproceedwiththeinstructionsworkingwith

thereceiver.Whenbecomingfamiliarwiththeprocedure,theflowchartforservicemodemaybe

usedasaquickguide.

Quickentry toservicemode

Whenminoradjustmentsneedtobedonetotheelectroniccontrols,themethod ofenteringthe

servicemodewithoutremovalofthecabinetbackisasfollowsusingtheremotecontrol:

1.SelectSET-UPicon and selectCABLE mode.

2.SelectTIMERicon and setSLEEPtimefor30 Min.

3.Exit menus.

4.Tunetothechannel124.

5.AdjustVOLUMEtominimum(0).

6.PressVOL (decrease)on receiver.Red“CHK”appearsinuppercorner.

NOTE

Afterreceiverissetintoservicemode,setTIMERbacktoNO.

Totogglebetweenagingand servicemodes:

Whilethe“CHK”isdisplayedon thelefttop corneroftheCRT,pressing“ACTION”and

“VOL”UPon theTVsimultaneouslywilltogglebetweenthemodes.Red“CHK”for

serviceand yellow“CHK”foraging.

7.PressPOWERon theremotecontroltodisplaytheserviceadjustmentmodesmenu, select

adjustmentbypressingthevolumeright/leftbuttonsand channelup/downbuttonson the

remoteand ACTION toentertheadjustment.

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NOTE

Someadjustmentsareavailableonlyinsomemodes(480i,480p,1080i);itisneededtoapply

theformat.A1080i,480p, 480ipatterncanbeobtainedfromPanasonic’sTU-DST51 set-top

box DTVdecoder.

Exitingtheservicemode:

ThisTVgoesoutfromservicemodewhenit isunpluggedorturnedOFF.Toexit theservicemode,

turntheTVOFF orunplugtheTVfromA.C.

Othermethod

PressACTION and POWERon thereceiversimultaneouslyforatleast2seconds.

Thereceivermomentarilyshutsoff;thencomesbackon tunedtochannel3withapresetlevelof

sound.

Any programmedchannels,channelscaption dataand someothersuserdefinedsettingswill be

erasedwhenexitedby pressingACTION and POWERon receiver.

IMPORTANTNOTE

AlwayscheckthattheTVexitstheservicemode.

Toconfirmcolors

Wheninservicemode(red“CHK”isdisplayed)pressRECALLon theremotecontroltoenterthe

purityfieldcheckmode

Enteringservicemode(open-backmethod)

Whilethereceiverisconnectedand operatinginnormalmode,momentarilyshorttestpoint

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FA1(A15 pin2)to coldground (A-Board).

Thereceiverenterstheagingmode.

Yellowletters“CHK”appearintheupperleftcornerofthescreen.

(Thevolumeright/leftand channelup/downwill adjustrapidly).

14.1Serviceadjustmentdefault valuesforserviceitems

14.2Instructionalflowchartforservicemode

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14.1Service adjustmentdefaultvaluesfor

serviceitems

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DESCRIPTIONFORMAT

NTSC

480p (16:9)

1080i(16:9)

1080i(4:3)

MTSININPUTLEVEL 1A

SEPALLOWLEVELSEPARATION6

SEPAHHIGHLEVELSEPARATION20

CLOCKCLOCK128

COLORCOLOR2F17

TINTTINT7681

BRIGHSUB-BRIGHTNESS3B 42

CONTSUB-CONTRAST2365

B-Y_GMAGENTATINTADJ2E3E

CUTGGREENCUT-OFF0165

CUTRREDCUT-OFF0185

CUTBBLUECUT-OFF01A6

BRTBGRIGHT

RDRREDDRIVEA0

BDRBLUEDRIVEA0

HLINHORIZONTALLINEARITY797F

HPOSHORIZONTALPOSITIONING017A

0182

HWIDHORIZONTALWIDTH542F

PCC PINCUSHIONCORRECTION502A313E

PCCHG PINCUSHIONHIGH60A97

PCCLGPINCUSHIONLOW2759

PCCHS PINCUSHIONHIGH4333

PCCLSPINCUSHIONLOW3333

TOPGTOP CORNERPINCUSHION5B 554C5B

BTMGBOTTOM CORNERPINCUSHION4532494A

TOPSLTOP CORNERPINCUSHION SLICELEVEL 2867

BTMSLBOTTOM CORNERPINCUSHIONSLICELEVEL

2857

TRAPTRAPEZOID837E7F7D

PARAPARALLELOGRAM3448

SIDEE-WPINCUSHION ADJUSTMENT4678

HTRAP HORIZONTALTRAPEZOID1A1A1A14

VRASVERTICALPOSITION8C717B 79

VEAMPVERTICALSIZEA8E2999A

V-CVERTICALLINEARITY21262524

V-SVERTICALSCORRECTION 30251733

HDAFSHORIZONTALDAFPHASE5901C5A0

VDAFGVERTICALDAFGAINA063600

VMM_G---------------- F0F0

VMM_P---------------- F3F3

HHS ---------------- CB

EW_SW---------------- 000

VTOP---------------- 9C7E799B

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NOTE:

Theabovetableshowsthedefaultvaluesfortheserviceitems,thisvaluescanchangedependingon

theservicedTV.

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SOSSW---------------- 11

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