Sharp Lc 60le920 Service Manual
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![Page 47
CHAPTER6.TROUBLESHOOTINGTABLE LC-52LE920UN/LC-60LE920UN
[1]TROUBLESHOOTINGTABLE
INOvide°11)I
ICOMPOSITE:NoexternalinputvideoIINPUT-2]........I
[IsINPUT-2selectedontheinputselectmenuscreen?]
JNO
SelectINPUT-2ontheinputselectmenu
screenfortherightinputsignal.
YES
IstheretheCOMPOSITEsignalinputatpin(AE29)ofIC3302
(CPU)?
_NO
[Checkthelinebetweenpin(3)°fJ505andpin I(AE29)ofIC3302.
YES
AretheLVDSsignaloutputsattheLVDS1stchanneland2ndchannelofIC3302?...](http://img.usermanuals.tech/thumb/68/54598/w64_sharp_lc-60le920_service-manual-46.png "Page 47
CHAPTER6.TROUBLESHOOTINGTABLE LC-52LE920UN/LC-60LE920UN
[1]TROUBLESHOOTINGTABLE
INOvide°11)I
ICOMPOSITE:NoexternalinputvideoIINPUT-2]........I
[IsINPUT-2selectedontheinputselectmenuscreen?]
JNO
SelectINPUT-2ontheinputselectmenu
screenfortherightinputsignal.
YES
IstheretheCOMPOSITEsignalinputatpin(AE29)ofIC3302
(CPU)?
_NO
[Checkthelinebetweenpin(3)°fJ505andpin I(AE29)ofIC3302.
YES
AretheLVDSsignaloutputsattheLVDS1stchanneland2ndchannelofIC3302?...")
![Page 48
LC-52LE920UN/LC-60LE920UN
INovideo12)I
ICOMPONENT:NoexternalinputvideoIINPUT-1]....I
IsINPUT-]selectedontheinputselectmenuscreen?
IstheINPUT-SELECTfortheinputsignal?
_NO
SelectINPUT-]ontheinputselectmenuscreenfor
therightinputsignal.
DoestheCOMPI_PLUGdetectionfunction?
Checkthelinebetweenpin(4)ofinputterminal(J506)
andpin(D30)ofIC3302(CPU).
YES
AretheretheCOMPONENTvideosignalinputsatpins(AJ21)(Y)/
(AJ22)(Pb)and(AH22)(Pr)ofIC3302(CPU)?
_NO
CheckthelinebetweentheinputterminalsofJ506...](http://img.usermanuals.tech/thumb/68/54598/w64_sharp_lc-60le920_service-manual-47.png "Page 48
LC-52LE920UN/LC-60LE920UN
INovideo12)I
ICOMPONENT:NoexternalinputvideoIINPUT-1]....I
IsINPUT-]selectedontheinputselectmenuscreen?
IstheINPUT-SELECTfortheinputsignal?
_NO
SelectINPUT-]ontheinputselectmenuscreenfor
therightinputsignal.
DoestheCOMPI_PLUGdetectionfunction?
Checkthelinebetweenpin(4)ofinputterminal(J506)
andpin(D30)ofIC3302(CPU).
YES
AretheretheCOMPONENTvideosignalinputsatpins(AJ21)(Y)/
(AJ22)(Pb)and(AH22)(Pr)ofIC3302(CPU)?
_NO
CheckthelinebetweentheinputterminalsofJ506...")
![Page 50
LC-52LE920UN/LC-60LE920UN
I.ovideo14)I
IPC:Noexternalinputvideo[INPUT-3]I
IIsINPUT-3selectedontheinputselectmenuscreen?I
_NO
SelectINPUT-3ontheinputselectmenuscreenfortherightinputsignal.
IsIC509(EEPROM)accessedby12C,withPCconnected,toreadtheDDC_I2CSCL/SDAdata?
ChecktheDDClineanditsperipheralcircuits.(IC509anditsperipherals).
YES
Aretherethevideosignalinputsatpins(AK16)(G),(AH15)(B)and(AK17)(R)ofIC3302(CPU)?
AretheretheVSYNC/HSYNCsignalinputsatpins(AJ14)and(AK14)ofIC3302?
_NO...](http://img.usermanuals.tech/thumb/68/54598/w64_sharp_lc-60le920_service-manual-49.png "Page 50
LC-52LE920UN/LC-60LE920UN
I.ovideo14)I
IPC:Noexternalinputvideo[INPUT-3]I
IIsINPUT-3selectedontheinputselectmenuscreen?I
_NO
SelectINPUT-3ontheinputselectmenuscreenfortherightinputsignal.
IsIC509(EEPROM)accessedby12C,withPCconnected,toreadtheDDC_I2CSCL/SDAdata?
ChecktheDDClineanditsperipheralcircuits.(IC509anditsperipherals).
YES
Aretherethevideosignalinputsatpins(AK16)(G),(AH15)(B)and(AK17)(R)ofIC3302(CPU)?
AretheretheVSYNC/HSYNCsignalinputsatpins(AJ14)and(AK14)ofIC3302?
_NO...")
![Page 51
LC-52LE920UN/LC-60LE920UN
INovideo15)-1I
IHDMI:Noexternalinputvideo[INPUT-4]I
IsINPUT-4selectedontheinputselectmenuscreen? IHDMI:Noexternalinputvideo[INPUT-5]I
IIsINPUT-5selectedontheinputselectmenuscreen?I
_NO
SelectINPUT-4ontheinputselectmenuscreenforthe
rightinputsignal.
YES
DoestheHOTPLUGdetectionfunction?
DoestheDDC5Vsignalcomefrompin(18)ofSC1503topin(46)of
IC1504(HDMI_SW)? _NO
SelectINPUT-5ontheinputselectmenuscreenforthe
rightinputsignal.
YES
DoestheHOTPLUGdetectionfunction?...](http://img.usermanuals.tech/thumb/68/54598/w64_sharp_lc-60le920_service-manual-50.png "Page 51
LC-52LE920UN/LC-60LE920UN
INovideo15)-1I
IHDMI:Noexternalinputvideo[INPUT-4]I
IsINPUT-4selectedontheinputselectmenuscreen? IHDMI:Noexternalinputvideo[INPUT-5]I
IIsINPUT-5selectedontheinputselectmenuscreen?I
_NO
SelectINPUT-4ontheinputselectmenuscreenforthe
rightinputsignal.
YES
DoestheHOTPLUGdetectionfunction?
DoestheDDC5Vsignalcomefrompin(18)ofSC1503topin(46)of
IC1504(HDMI_SW)? _NO
SelectINPUT-5ontheinputselectmenuscreenforthe
rightinputsignal.
YES
DoestheHOTPLUGdetectionfunction?...")
![Page 52
LC-52LE920UN/LC-60LE920UN
INovideo15)-2I
IHDMI:Noexternalinputvideo[INPUT-6]I
IsINPUT-6selectedontheinputselectmenuscreen? IHDMI:Noexternalinputvideo[INPUT-7]I
IIsINPUT-7selectedontheinputselectmenuscreen?I
_NO
SelectINPUT-6ontheinputselectmenuscreenforthe
rightinputsignal.
YES
DoestheHOTPLUGdetectionfunction?
DoestheDDC5Vsignalcomefrompin(18)ofSC1501topin(36)of
IC1504(HDMI_SW)? _NO
SelectINPUT-7ontheinputselectmenuscreenforthe
rightinputsignal.
YES
DoestheHOTPLUGdetectionfunction?...](http://img.usermanuals.tech/thumb/68/54598/w64_sharp_lc-60le920_service-manual-51.png "Page 52
LC-52LE920UN/LC-60LE920UN
INovideo15)-2I
IHDMI:Noexternalinputvideo[INPUT-6]I
IsINPUT-6selectedontheinputselectmenuscreen? IHDMI:Noexternalinputvideo[INPUT-7]I
IIsINPUT-7selectedontheinputselectmenuscreen?I
_NO
SelectINPUT-6ontheinputselectmenuscreenforthe
rightinputsignal.
YES
DoestheHOTPLUGdetectionfunction?
DoestheDDC5Vsignalcomefrompin(18)ofSC1501topin(36)of
IC1504(HDMI_SW)? _NO
SelectINPUT-7ontheinputselectmenuscreenforthe
rightinputsignal.
YES
DoestheHOTPLUGdetectionfunction?...")
![Page 53
LC-52LE920UN/LC-60LE920UN
INoaudio11)I
IINPUT-1Noaudio,I
[IsINPUT-1selectedontheinputselectmenuscreen?] €
IINPUT-2Noaudio,I
¢
IsINPUT-2selectedontheinputselectmenuscreen?I
_NO
[Referto:Noexternalinputvideo[INPUT-I].]
YES
[IstheaudiooutputselectedforVARIABLEonthemenuscreen?] NO
IRefertoNoexternalinputvideo[INPUT-2].I
YES
IstheaudiooutputselectedforVARIABLEonthemenuscreen?I
_NO
SettheaudioFIXED. output to
YES
Doestheaudiosignalcomefrompins(4)(L)and(3)(P,)ofinput...](http://img.usermanuals.tech/thumb/68/54598/w64_sharp_lc-60le920_service-manual-52.png "Page 53
LC-52LE920UN/LC-60LE920UN
INoaudio11)I
IINPUT-1Noaudio,I
[IsINPUT-1selectedontheinputselectmenuscreen?] €
IINPUT-2Noaudio,I
¢
IsINPUT-2selectedontheinputselectmenuscreen?I
_NO
[Referto:Noexternalinputvideo[INPUT-I].]
YES
[IstheaudiooutputselectedforVARIABLEonthemenuscreen?] NO
IRefertoNoexternalinputvideo[INPUT-2].I
YES
IstheaudiooutputselectedforVARIABLEonthemenuscreen?I
_NO
SettheaudioFIXED. output to
YES
Doestheaudiosignalcomefrompins(4)(L)and(3)(P,)ofinput...")
![Page 54
LC-52LE920UN/LC-60LE920UN
INoaudio12)I
I[PCanalo_laudioinput]INPUT-3Noaudio,I
IsINPUT-3selectedontheinputselectmenuscreen? I[HDMIanalo_laudioinput]INPUT-4Noaudio.I
IsINPUT-4selectedontheinputselectmenuscreen?I
_NO
IReferto:Noexternalinputvideo[INPUT-3].
YES
IstheaudiooutputselectedforVARIABLEonthemenuscreen? NO
IReferto:Noexternalinputvideo [INPUT-4].
YES
IstheaudiooutputselectedforVARIABLEonthemenuscreen? I
I
_NO
ISettheaudiooutputtoFIXED.
YES...](http://img.usermanuals.tech/thumb/68/54598/w64_sharp_lc-60le920_service-manual-53.png "Page 54
LC-52LE920UN/LC-60LE920UN
INoaudio12)I
I[PCanalo_laudioinput]INPUT-3Noaudio,I
IsINPUT-3selectedontheinputselectmenuscreen? I[HDMIanalo_laudioinput]INPUT-4Noaudio.I
IsINPUT-4selectedontheinputselectmenuscreen?I
_NO
IReferto:Noexternalinputvideo[INPUT-3].
YES
IstheaudiooutputselectedforVARIABLEonthemenuscreen? NO
IReferto:Noexternalinputvideo [INPUT-4].
YES
IstheaudiooutputselectedforVARIABLEonthemenuscreen? I
I
_NO
ISettheaudiooutputtoFIXED.
YES...")
![Page 55
LC-52LE920UN/LC-60LE920UN
I.oaudio13)I
INoaudioatUHFNHFbroadcastsi_lnalreception,I
IIsTVselectedontheinputselectmenuscreen?I INoaudioatdi_litalbroadcastsi_lnalreception,I
IsTVselectedontheinputselectmenuscreen?]
_NO
RefertoNovideoatUHF/VHFbroadcastsignal
reception.
YES
IstheaudiooutputselectedforVARIABLEonthemenuscreen? _NO
RefertoNovideoatdigitalbroadcastsignal
reception.
YES
Ifnovideoappears,refertoNovideoatdigitalbroadcastsignal
reception.
_NO
ISettheaudiooutputtoFIXED....](http://img.usermanuals.tech/thumb/68/54598/w64_sharp_lc-60le920_service-manual-54.png "Page 55
LC-52LE920UN/LC-60LE920UN
I.oaudio13)I
INoaudioatUHFNHFbroadcastsi_lnalreception,I
IIsTVselectedontheinputselectmenuscreen?I INoaudioatdi_litalbroadcastsi_lnalreception,I
IsTVselectedontheinputselectmenuscreen?]
_NO
RefertoNovideoatUHF/VHFbroadcastsignal
reception.
YES
IstheaudiooutputselectedforVARIABLEonthemenuscreen? _NO
RefertoNovideoatdigitalbroadcastsignal
reception.
YES
Ifnovideoappears,refertoNovideoatdigitalbroadcastsignal
reception.
_NO
ISettheaudiooutputtoFIXED....")
![Page 56
LC-52LE920UN/LC-60LE920UN
I.oaudio14)I
IINPUT-4NoaudioIHDMIconnectedI INPUT-5NoaudioIHDMIconnectedI
INPUT-6NoaudioIHDMIconnectedI
INPUT-7NoaudioIHDMIconnectedI
[INPUT-4input]
IsINPUT-4selectedontheinputselectmenuscreen?
[INPUT-5input]
IsINPUT-5selectedontheinputselectmenuscreen?
[INPUT-6input]
IsINPUT-6selectedontheinputselectmenuscreen?
[INPUT-7input]
IsINPUT-7selectedontheinputselectmenuscreen?
_NO
IReferto:Noexternalinputvideo[INPUT-4/5/6/7].
YES
[INPUT-4input]...](http://img.usermanuals.tech/thumb/68/54598/w64_sharp_lc-60le920_service-manual-55.png "Page 56
LC-52LE920UN/LC-60LE920UN
I.oaudio14)I
IINPUT-4NoaudioIHDMIconnectedI INPUT-5NoaudioIHDMIconnectedI
INPUT-6NoaudioIHDMIconnectedI
INPUT-7NoaudioIHDMIconnectedI
[INPUT-4input]
IsINPUT-4selectedontheinputselectmenuscreen?
[INPUT-5input]
IsINPUT-5selectedontheinputselectmenuscreen?
[INPUT-6input]
IsINPUT-6selectedontheinputselectmenuscreen?
[INPUT-7input]
IsINPUT-7selectedontheinputselectmenuscreen?
_NO
IReferto:Noexternalinputvideo[INPUT-4/5/6/7].
YES
[INPUT-4input]...")
LC-52LE920UN/LC-60LE920UN INovideo15)-1I IHDMI:Noexternalinputvideo[INPUT-4]I IsINPUT-4selectedontheinputselectmenuscreen? IHDMI:Noexternalinputvideo[INPUT-5]I IIsINPUT-5selectedontheinputselectmenuscreen?I _NO SelectINPUT-4ontheinputselectmenuscreenforthe rightinputsignal. YES DoestheHOTPLUGdetectionfunction? DoestheDDC5Vsignalcomefrompin(18)ofSC1503topin(46)of IC1504(HDMI_SW)? _NO SelectINPUT-5ontheinputselectmenuscreenforthe rightinputsignal. YES DoestheHOTPLUGdetectionfunction? DoestheDDC5Vsignalcomefrompin(18)ofSC1502topin(42)of IC1504(HDMI_SW)? _NO CheckthelinebetweentheinputterminalsofSC1502 andIC1504. CheckIC1504anditsperipheralcircuits (SDA0_400K:pin53ofIC1504/SCL0_400K:pin54of YESIC1504,etc.). DoestheHPDsignalcomefrompin(41)ofIC1504topin(19)of SC1502? _NO Checkthelinebetweenthepin(41)ofIC1504andthe pin(19)ofSC1502. CheckIC1504anditsperipheralcircuits (SDA0_400K:pin53ofIC1504/SCL0_400K:pin54of YESIC1504,etc.). AretheretheTMDSsignalinputsatpins(11/12)(CLK-/+),(13/14) (D0-/+),(15/16)(D1-/+),(17/18)(D2-/+),allofIC1504? _NO IsIC1504(pin39/pin40)accessedby12C,withHDMI connected,toreadtheDDC_I2CSDA/SCLdata? _NO ChecktheDDClineanditsperipheralcircuits. (IC1504anditsperipherals). NO CheckthelinebetweentheinputterminalsofSC1503 andIC1504. CheckIC1504anditsperipheralcircuits (SDA0_400K:pin53ofIC1504/SCL0_400K:pin54of YESIC1504,etc.). DoestheHPDsignalcomefrompin(45)ofIC1504topin(19)of SC1503? _NO Checkthelinebetweenthepin(45)ofIC1504andthe pin(19)ofSC1503. CheckIC1504anditsperipheralcircuits (SDA0_400K:pin53ofIC1504/SCL0_400K:pin54of YESIC1504,etc.). IAretheretheTMDSsignalinputsatpins(19/20)(CLK-/+),(21/22) (D0-/+),(23/24)(D1-/+),(25/26)(D2-/+),allofIC1504? JNO IsIC1504(pin43/pin44)accessedby12C,withHDMI connected,toreadtheDDC_I2CSDA/SCLdata? _NO ChecktheDDClineanditsperipheralcircuits. (IC1504anditsperipherals). YESYES AretheretheTMDSsignalinputsatpins(AJ6/AK6)(CLK-/+),(AJ7/AK7)(D0-/+),(AJ8/ AK8)(D1-/+),(AJ9/AK9)(D2-/+),allofIC3302(CPU)? NOCheckIC1504,IC3302andtheirperipheral circuits. _YES AretheLVDSsignaloutputsattheLVDS1stchanneland2ndchannelofIC3302? LVDSTX0DATA0_P/N(C14/D14),LVDSTX0DATAI_P/N(C15/D15), LVDSTX0DATA2_P/N(C16/D16),LVDSTX0DATA3_P/N(C18/D18), LVDSTX0DATA4_P/N(C19/D19),LVDSTX0CLKP/N(C17/D17), LVDSTX1DATA0_P/N(A14/B14),LVDSTX1DATAI_P/N(A15/B15), LVDSTX1DATA2_P/N(A16/B16),LVDSTX1DATA3_P/N(A18/B18), LVDSTX1DATA4_P/N(A19/B19),LVDSTX1CLK_P/N(A17/B17). NO CheckIC3302anditsperipheralcircuits. (IC3501/IC3502,etc.) _YES Checkthepanelmodule. 6-5
LC-52LE920UN/LC-60LE920UN INovideo15)-2I IHDMI:Noexternalinputvideo[INPUT-6]I IsINPUT-6selectedontheinputselectmenuscreen? IHDMI:Noexternalinputvideo[INPUT-7]I IIsINPUT-7selectedontheinputselectmenuscreen?I _NO SelectINPUT-6ontheinputselectmenuscreenforthe rightinputsignal. YES DoestheHOTPLUGdetectionfunction? DoestheDDC5Vsignalcomefrompin(18)ofSC1501topin(36)of IC1504(HDMI_SW)? _NO SelectINPUT-7ontheinputselectmenuscreenforthe rightinputsignal. YES DoestheHOTPLUGdetectionfunction? DoestheDDC5Vsignalcomefrompin(18)ofSC1505topin(32)of IC1504(HDMI_SW)? _NO CheckthelinebetweentheinputterminalsofSC1505 andIC1504. CheckIC1504anditsperipheralcircuits (pin53ofIC1504/SCL1:pin54ofIC1504,etc.). YES DoestheHPDsignalcomefrompin(31)ofIC1504topin(19)of SC1505? _NO Checkthelinebetweenthepin(41)ofIC1504andthe pin(19)ofSC1505. CheckIC1504anditsperipheralcircuits pin53ofIC1504/SCL1:pin54ofIC1504,etc.). YES AretheretheTMDSsignalinputsatpins(65/66)(CLK-/+),(67/68) (D0-/+),(69/70)(D1-/+),(71/72)(D2-/+),allofIC1504? _NO IsIC1504(pin29/pin30)accessedby12C,withHDMI connected,toreadtheDDC_I2CSDA/SCLdata? _NO ChecktheDDClineanditsperipheralcircuits. (IC1504anditsperipherals) YES J_NO CheckthelinebetweentheinputterminalsofSC1501 andIC1504. CheckIC1504anditsperipheralcircuits. (SDA0_400K:pin53ofIC1504/SCL0_400K:pin54of YESIC1504,etc.). DoestheHPDsignalcomefrompin(35)ofIC1504topin(19)of SC1501? _NO Checkthelinebetweenthepin(31)ofIC1504andthe pin(19)ofSC1501. CheckIC1504anditsperipheralcircuits (SDA0_400K:pin53ofIC1504/SCL0_400K:pin54of YESIC1504,etc.). IAretheretheTMDSsignalinputsatpins(1/2)(CLK-/+),(3/4)(D0-/ +),(5/6)(D1-/+),(7/8)(D2-/+),allofIC1504? _NO IsIC1504(pin33/pin34)accessedby12C,withHDMI connected,toreadtheDDC_I2CSDA/SCLdata? _NO ChecktheDDClineanditsperipheralcircuits. (IC1504anditsperipherals). YES AretheretheTMDSsignalinputsatpins(AJ6/AK6)(CLK-/+),(AJ7/AK7)(D0-/+),(AJ8/] AK8)(D1-/+),(AJ9/AK9)(D2-/+),allofIC3302(CPU)? J JNO ICheckIC1504,IC3302andtheirperipheralcircuits.I YESYES AretheLVDSsignaloutputsattheLVDS1stchanneland2ndchannelofIC3302? LVDSTX0DATA0_P/N(C14/D14),LVDSTX0DATAI_P/N(C15/D15), LVDSTX0DATA2_P/N(C16/D16),LVDSTX0DATA3_P/N(C18/D18), LVDSTX0DATA4_P/N(C19/D19),LVDSTX0CLKP/N(C17/D17), LVDSTX1DATA0_P/N(A14/B14),LVDSTX1DATAI_P/N(A15/B15), LVDSTX1DATA2_P/N(A16/B16),LVDSTX1DATA3_P/N(A18/B18), LVDSTX1DATA4_P/N(A19/B19),LVDSTX1CLK_P/N(A17/B17). NO CheckIC3302anditsperipheralcircuits. (IC3501/IC3502,etc.) _YES [Checkthepanelmodule. 6-6
LC-52LE920UN/LC-60LE920UN INoaudio11)I IINPUT-1Noaudio,I [IsINPUT-1selectedontheinputselectmenuscreen?] € IINPUT-2Noaudio,I ¢ IsINPUT-2selectedontheinputselectmenuscreen?I _NO [Referto:Noexternalinputvideo[INPUT-I].] YES [IstheaudiooutputselectedforVARIABLEonthemenuscreen?] NO IRefertoNoexternalinputvideo[INPUT-2].I YES IstheaudiooutputselectedforVARIABLEonthemenuscreen?I _NO SettheaudioFIXED. output to YES Doestheaudiosignalcomefrompins(4)(L)and(3)(P,)ofinput terminal(J507)topins(U29)(L)and(U28)(P,)ofIC3302(CPU)? _NO ISettheaudiooutputtoFIXED. YES Doestheaudiosignalcomefrompins(4)(L)and(1)(P,)ofinput terminal(J505)topins(P,28)(L)and(T26)(P,)ofIC3302(CPU)? _NO [CheckthelinebetweenJ507andIC3302.] YESYES Doesthedigitalaudiosignalcomefrompins(F28/F3O/G28)(AUBCK/AULP,CK/AOSDATA0)of IC3302(CPU)topin(8/9/7)(SP_BCLK/SP_LP,CLK/SP_DATA)ofIC2701(AudioDSP)? _NO ICheckthelinebetweenJ505andIC3302. _NO CheckthelinebetweenIC3302andIC2701, andtheirperipheralcircuits. YES •AbouttheL/P,Speakers. Doesthedigitalaudiosignalcomefrompins(47/43/44/45)of IC2701(AudioDSP)topin(5/8/7/6)ofIC2703(AMPforL/P,)? •AbouttheSubwooferspeaker. Doesthedigitalaudiosignalcomefrompins(47/43/44/46)of IC2701(AudioDSP)topin(5/8/7/6)ofIC2702(AMPforSW)? _YES •AbouttheL/P,Speakers. IstheaudiooutputfromIC2703asspecified? •AbouttheSubwooferSpeaker. IStheaudiooutputfromIC2702asspecified? _Yes •AbouttheL!P,Speakers. Checktheconnector(P2701)L/P,speakersandtheirperipheralcir- cuits. •AbouttheSubwooferSpeaker. Checktheconnector(P2702),subwooferspeakerandtheirperiph- eral. NO NO CheckIC2701anditsperipheralcircuits.(X2701,etc.). •AbouttheL/P,Speakers. CheckIC2703anditsperipheralcircuits. •AbouttheSubwooferSpeaker. CheckIC2702anditsperipheralcircuits. 6-7
LC-52LE920UN/LC-60LE920UN INoaudio12)I I[PCanalo_laudioinput]INPUT-3Noaudio,I IsINPUT-3selectedontheinputselectmenuscreen? I[HDMIanalo_laudioinput]INPUT-4Noaudio.I IsINPUT-4selectedontheinputselectmenuscreen?I _NO IReferto:Noexternalinputvideo[INPUT-3]. YES IstheaudiooutputselectedforVARIABLEonthemenuscreen? NO IReferto:Noexternalinputvideo [INPUT-4]. YES IstheaudiooutputselectedforVARIABLEonthemenuscreen? I I _NO ISettheaudiooutputtoFIXED. YES IsthePCinput-AudioselectforVideo+Audioonthemenu screen? _NO ISettheaudiooutputtoFIXED. i YES IsthePCinput-AudioselectselectedforHDMI+Analogon themenuscreen? JNO SetthePCinput-AnalogselecttoVideo+ Audio. YESYES Doesthedigitalaudiosignalcomefrompins(F28/F30/G28)(AUBCK/AULRCK/AOSDATA0)of IC3302(CPU)topin(8/9/7)(SP_BCLK/SP_LRCLK/SP_DATA)ofIC2701(AudioDSP)? _NO SetthePCinput-AnalogselecttoHDMI+ Analog. _NO CheckthelinebetweenIC3302andIC2701, andtheirperipheralcircuits. YES •AbouttheL/RSpeakers. Doesthedigitalaudiosignalcomefrompins(47/43/44/45)of IC2701(AudioDSP)topin(5!8!7!6)ofIC2703(AMPforL/R)? •AbouttheSubwooferspeaker. Doesthedigitalaudiosignalcomefrompins(47/43/44/46)of IC2701(AudioDSP)topin(5!8!7!6)ofIC2702(AMPforSW)? _YES •AbouttheL/RSpeakers. IstheaudiooutputfromIC2703asspecified? •AbouttheSubwooferSpeaker. IStheaudiooutputfromIC2702asspecified? _Yes •AbouttheL!RSpeakers. Checktheconnector(P2701)L/Rspeakersandtheirperipheralcir- cuits. •AbouttheSubwooferSpeaker. Checktheconnector(P2702),subwooferspeakerandtheirperiph- eral. NO NO CheckIC2701anditsperipheralcircuits.(X2701,etc.). •AbouttheL!RSpeakers. CheckIC2703anditsperipheralcircuits. •AbouttheSubwooferSpeaker. CheckIC2702anditsperipheralcircuits. 6-8
LC-52LE920UN/LC-60LE920UN I.oaudio13)I INoaudioatUHFNHFbroadcastsi_lnalreception,I IIsTVselectedontheinputselectmenuscreen?I INoaudioatdi_litalbroadcastsi_lnalreception,I IsTVselectedontheinputselectmenuscreen?] _NO RefertoNovideoatUHF/VHFbroadcastsignal reception. YES IstheaudiooutputselectedforVARIABLEonthemenuscreen? _NO RefertoNovideoatdigitalbroadcastsignal reception. YES Ifnovideoappears,refertoNovideoatdigitalbroadcastsignal reception. _NO ISettheaudiooutputtoFIXED. IstheaudiooutputselectedforVARIABLEonthemenuscreen?] _NO ISettheaudiooutputtoFIXED. YES IIstheretheSlFsignaloutputatpin(14)oftuner(TUl102)?I _NO Checkthetuner(TUl102)anditsperipheralcir- cuits. (12Cline:TUNEP,_SCL/TUNEP,_SDA,etc.) YES DoestheSIFsignalcomefrompin(14)oftuner(TUl102)topin (AB27)ofIC3302(CPU)? _NO CheckthelinebetweenTUl102andIC3302,and theirperipheralcircuits(Ql101,Ql102,etc.). YESYES Doesthedigitalaudiosignalcomefrompins(F28/F30/G28)(AUBCK/AULP,CK/AOSDATA0)of IC3302(CPU)topin(8/9/7)(SP_BCLK/SP_LP,CLK/SP_DATA)ofIC2701(AudioDSP)? _NO CheckthelinebetweenIC3302andIC2701,and theirperipheralcircuits. YES •AbouttheL/RSpeakers. Doesthedigitalaudiosignalcomefrompins(47/43/44/45)of IC2701(AudioDSP)topin(5/8/7/6)ofIC2703(AMPforL/P,)? •AbouttheSubwooferspeaker. Doesthedigitalaudiosignalcomefrompins(47/43/44/46)of IC2701(AudioDSP)topin(5/8/7/6)ofIC2702(AMPforSW)? _YES •AbouttheL/RSpeakers. IstheaudiooutputfromIC2703asspecified? •AbouttheSubwooferSpeaker. IStheaudiooutputfromIC2702asspecified? _Yes •AbouttheL!RSpeakers. Checktheconnector(P2701)L/P,speakersandtheirperipheralcir- cuits. •AbouttheSubwooferSpeaker. Checktheconnector(P2702),subwooferspeakerandtheirperiph- eral. NO NO ==-=.I_ CheckIC2701anditsperipheralcircuits.(X2701,etc.). •AbouttheL/RSpeakers. CheckIC2703anditsperipheralcircuits. •AbouttheSubwooferSpeaker. CheckIC2702anditsperipheralcircuits. 6-9
LC-52LE920UN/LC-60LE920UN I.oaudio14)I IINPUT-4NoaudioIHDMIconnectedI INPUT-5NoaudioIHDMIconnectedI INPUT-6NoaudioIHDMIconnectedI INPUT-7NoaudioIHDMIconnectedI [INPUT-4input] IsINPUT-4selectedontheinputselectmenuscreen? [INPUT-5input] IsINPUT-5selectedontheinputselectmenuscreen? [INPUT-6input] IsINPUT-6selectedontheinputselectmenuscreen? [INPUT-7input] IsINPUT-7selectedontheinputselectmenuscreen? _NO IReferto:Noexternalinputvideo[INPUT-4/5/6/7]. YES [INPUT-4input] Ifnovideoappears,refertoNoexternalinputvideo(HDMI)[INPUT-4]. [INPUT-5input] Ifnovideoappears,refertoNoexternalinputvideo(HDMI)[INPUT-5]. [INPUT-6input] Ifnovideoappears,refertoNoexternalinputvideo(HDMI)[INPUT-6]. [INPUT-7input] Ifnovideoappears,refertoNoexternalinputvideo(HDMI)[INPUT-7]. [IstheaudiooutputselectedforVARIABLEonthemenuscreen?] _NO ISettheaudiooutputtoFIXED. i YES Doesthedigitalaudiosignalcomefrompins(F28/F30/G28)(AUBCK/AULRCK/AOSDATA0)ofIC3302 (CPU)topin(8/9/7)(SP_BCLK/SP_LRCLK/SP_DATA)ofIC2701(AudioDSP)? _NO CheckthelinebetweenIC3302and IC2701,andtheirperipheralcircuits. YES •AbouttheL/RSpeakers. Doesthedigitalaudiosignalcomefrompins(47/43/44/45)of IC2701(AudioDSP)topin(5/8/7/6)ofIC2703(AMPforL/R)? •AbouttheSubwooferspeaker. Doesthedigitalaudiosignalcomefrompins(47/43/44/46)of IC2701(AudioDSP)topin(5/8/7/6)ofIC2702(AMPforSW)? _YES •AbouttheL/RSpeakers. IstheaudiooutputfromIC2703asspecified? •AbouttheSubwooferSpeaker. IStheaudiooutputfromIC2702asspecified? _Yes •AbouttheL!RSpeakers. Checktheconnector(P2701)L/Rspeakersandtheirperiph- eralcircuits. •AbouttheSubwooferSpeaker. Checktheconnector(P2702),subwooferspeakerandtheir peripheral. NO--_ NO--_ CheckIC2701anditsperipheralcircuits.(X2701,etc.). •AbouttheL/RSpeakers. CheckIC2703anditsperipheralcircuits. •AbouttheSubwooferSpeaker. CheckIC2702anditsperipheralcircuits. 6-10
LC-52LE920UN/LC-60LE920UN INoaudiosi_lnalatDi_litalAudioOutputterminalIAnalo_lsoundheardII INoINPUT-4151617IHDMI)audio.I Ifnovideoappears,refertoNoexternalinputvideo(HDMI) [INPUT-4/5/6/7]. INoaudioatdi_litalbroadcastsi_lnalreception.I Ifnovideoappears,refertoNovideoatdigitalbroadcastsignal reception. IIstheretheSPDIFsignaloutput(OPT_OUT)atpin(J28)ofIC3302(CPU)? _NO IChecktheIC3302anditsperipheralcircuits. YES IIstheretheSPDIFsignal(OPT_OUT)inputatpin(2)ofIC503(SPDIFBUFFER&SPDIF-MUTE)?I _NO ICheckthelinebetweenIC3302andIC503. YES IIstheretheMUTEsignalinputatpin(7)ofIC503?(usual:High,Mute:Low)I _NO ChecktheMUTEAALLandSPDIF-MUTEsignals,andtheirperipheralcir- cuits(Q505,D530,etc.). YES IIstheretheSPDIFsignalinputatpin(1)ofD520(OPTICALOUTPUT)?I _YES [Checkthespeakersandtheopticalcable.I _NO CheckD520anditsperipheralcircuits. NoopticaloutputunderthefollowingconditionsasperHDMIrequirements. *Audiocontentsprotected. *Audiofrequencybeyond48kHz. *Audiobitlengthbeyond16bits. 6-11
LC-52LE920UN/LC-60LE920UN INomonitoraudiooutputI [IstheaudiooutputfromthemonitorsetatVARIABLEorFIXEDonthemenuscreen?] NO ICheckIC3302(CPU)anditsperipheralcircuits. YES IAretheretheaudiosignaloutputsatpins(M28)(HP/MONI_L)and(M27)(HP/MONI_R)ofIC3302(CPU)? I I _NO ICheckIC3302(CPU)anditsperipheralcircuits. YES IDoestheaudiosignalcomefrompins(M28)(HP/MONI_L)and(M27)(HP/MONI_R)ofIC3302topins(2)(L)and(3)(R)ofJ504? I I YES _NO CheckthelinebetweenIC3302andJ504andtheirperipheralcircuits. ChecktheMUTEAAUandHP/MONI_MUTElinesanditsperipheralcircuits (Q506,D527,etc.). Checktheconnector(J504)andtheirperipheralcircuits,andspeakersandtheCable.] INoconnectnetworkI Doesthesignalcometo1pinofLAN-jackJ9501? (seefig-l,fig-2) NO Doesthesignalcometo12pinofIC9501? (seefig-2)(IC9501:KSZS041T) JNO Doesthe3.3VdccometoVDDA_3.3/VDDIO_3.3ofIC9501? Doesthe2.5VdccometoVDD_1.8/VDDA_1.8ofIC9501? _YES Doestheclocksignalcometo15pinofIC9501? (25MHz,3.3V) _YES ICheckIC9501anditsperipheralcircuits. YESIChecktheinterfacedeviceandperipheralcircuits. I(power-LEDofhub,LINK-LEDofhub) YES[CheckthelinebetweenJ9501andIC9501. IChecktheLAN-jackJ9501. NOICheckthepower-circuitsofD3.3V. ICheck7pin(V1.8_out)ofIC9501. NOICheckthelinebetweenX9501andIC9501. ICheckthecrystalX9501.(SCA219WJ) fig-1LAN-jackJ9501 t 1pin fig-2 6-12
LC-52LE920UN/LC-60LE920UN IIfitisnotanerrorofpowersupply/LEDdriver, Itisstart-upinthelamperrordisre_lardmode, I IDoyoustart?I _YES IDoesallLEDofonelinearenotlighting?I _NO IItdoesntlightin1 piece. i IAllLEDboardsincludingLEDthatdoesnt light are exchanged. YES TP1ofLEDboardonthepowersupplysideisconfirmed. Doesthevoltagehang? YES IIstheLEDboardconnectedwithCN2? I Iharnessexchange _NO I I _YES TP1ofthenextLEDboardconnectedwithCN2isconfirmed. Doesthevoltagehang? _NO Eveniftheshort-circuitconnectorisexchanged,donotyou light? ;YEs;.o;YEs;.o IThenextLEDboardisseen.IILEDboardexchange.IITHEEND. IIfitisnotanerrorofpowersupply/LEDdriver, Itisstart-upinthelamperrordisre_lardmode, [Doyoustart?] NO [Isconnectedconnector(LA1)withthefirsthighLEDboardofthepowersupplyboardremovedanddoitstart?] ;YES IAllLEDboardsandtheharnessconnectedwithLA1areexchanged.I NO IIsconnectedconnector(LA2)withtheLEDboardsecondonthepowersupplyboardremovedanddoitstart?I ;YES IAllLEDboardsandtheharnessconnectedwithLA2areexchanged.I NO IIsconnectedconnector(LA3)withtheLEDboardthirdonthepowersupplyboardremovedanddoitstart?I JYES AllLEDboardsandtheharnessconnectedwithLA3are exchanged. NO AllLEDboardsareexchanged.] 6-13
LC-52LE920UN/LC-60LE920UN iTroubleShootin_lPanelModulei WhenC-SFPC(2pieces)isreplaced,doesscreendisplaynormally?] ;YES [ReplaceC-SFPC(2pieces). NO WhenC-PWBisreplaced,doesscreendisplaynormally? ] ] _YES ReplaceC-PWB. (AdjustVCOMADJafterreplaceC-PWB) NO ReplacePanelHIRAKI. (AdjustVCOMADJafterreplacePanelHIRAKI) [2]LEDflashingspecificationatthetimeofanerror(CentericonLEDused) 1.Displaymethod SinceonlythecentericonLEDcanbeused,slowflashingandfastflashingarecombined. RefertoTable1. TheStartfromthedetaildisplay.(Nooutlinedisplay) Afterrecoveringfromanerror,ifthesameerrorcannotbegeneratedagain,refertoMONITORERRCAUSEontheprocessscreen. Duringversionupgrade,thebrightnessoftheflashingLEDchangessmoothly. Whencompletingversionupgrade,thebrightnessoftheLEDchangesinastaircasepattern. 2.LEDflashingmethod Errorflashing Centericon.............................................................................................................................................................................................................................o. oFF iiijJJJi 14oo st4oo s,,iT,, oo s, 100ms FlashingduringVerup CentericonI::F ,,_ 500ms 500ms FlashingwhencompletingVerup Centericon__.................................._:::_ lO00mslO00mslO00mslO00ms 6-14