Sharp LC-52DH65E (serv.man4) Service Manual ▷ View online
LC-52DH65E/S, LC-52DH66E
4 – 5
The audio signal is not output (2)
No audio signal output from AUDIO_OUTPUT terminal.
Is audio signal (L/R) output to pins (2, 4) of AUDIO_OUTPUT ter-
minal (J503)?
minal (J503)?
YES
Check the connection to AUDIO_OUTPUT terminal and external
input devices.
input devices.
NO
MONITOR_MUTE signal [Pin(23) of IC503(AV_SW.)] or MUTE-
A_ALL signal[Pin(21) of IC2003] will be "H"?
A_ALL signal[Pin(21) of IC2003] will be "H"?
YES
Check the peripheral circuits of IC503 and MUTE-A_ALL_LINE.
(D534, etc.)
(D534, etc.)
NO
Is audio signal (L/R) output to pins (5, 6) of IC1302 (DSP)?
YES
Check the line between IC1302 and J503.
(Q510, Q511, Q512, Q513, etc.)
(Q510, Q511, Q512, Q513, etc.)
NO
Check IC1302 and its peripheral circuits.
The audio signal is not output (3)
No sound from HEADPHONE_OUTPUT terminal.
Is the HP_PLUG signal input to pin(90) of IC9101(CPLD) from
pin(6) of a HEADPHONE_OUTPUT terminal(J1302)?
pin(6) of a HEADPHONE_OUTPUT terminal(J1302)?
NO
Check the line between J1302 and IC9101.
(J1302, IC9101, etc.)
(J1302, IC9101, etc.)
YES
Is the audio signal output (HP_L/R) to pins(2, 3) of HEADPHONE
terminal(J1302)?
terminal(J1302)?
YES
Check the HEADPHONE terminal(J1302) and/or peripheral cir-
cuits.
cuits.
NO
Is HP-MUTE-LINE [pin(70) of IC19101(CPLD)] at H?
YES
Check the peripheral circuits of IC9101 and HP-MUTE_LINE.
(Q1301, etc.)
(Q1301, etc.)
NO
Is audio signal (HP_L/R) output to pins (40, 42) of IC1302
(DSP)?
(DSP)?
YES
Check the line between IC1302 and J1302. (IC1305, etc.)
NO
Check IC1302 and its peripheral circuits.
LC-52DH65E/S, LC-52DH66E
4 – 6
No picture on the display (1)
The picture doesn't appear in all modes.
Is the LVDS signal output from IC8101(DIGITAL_AV_DECODER_&_MAIN_CPU_&_VIDEO PROCESSER) respectively?
TA1_P/M (AC25/AC26), TB1_P/M (AD25/AD26), TC1_P/M (AE25/AE26), TD1_P/M (AE24/AF24), TE1_P/M (AE23/AF23), TCLK1_P/M (AF25/
AF26), TA2_P/M (AE22/AF22), TB2_P/M (AE21/AF21), TC2_P/M (AE20/AF20), TD2_P/M (AE18/AF18), TE2_P/M (AE17/AF17), TCLK2_P/M
(AE19/AF19)
TA1_P/M (AC25/AC26), TB1_P/M (AD25/AD26), TC1_P/M (AE25/AE26), TD1_P/M (AE24/AF24), TE1_P/M (AE23/AF23), TCLK1_P/M (AF25/
AF26), TA2_P/M (AE22/AF22), TB2_P/M (AE21/AF21), TC2_P/M (AE20/AF20), TD2_P/M (AE18/AF18), TE2_P/M (AE17/AF17), TCLK2_P/M
(AE19/AF19)
YES
NO
Check IC8101 and its peripheral control circuits.
(IC2003, IC9101, IC8301, IC8302, X8102, etc.)
(IC2003, IC9101, IC8301, IC8302, X8102, etc.)
Is the above-mentioned LVDS signal output to connector
SC2601?
SC2601?
NO
Check the line between IC8101 and SC2601.
YES
Similarly, is LCD controller's control signal normal?
NO
Please check each control signal of L/R, U/D, HV_MODE,
ROMSEL_0/1, TEMP3/2/1, OS_EN, SHIP_EN, and PE.
ROMSEL_0/1, TEMP3/2/1, OS_EN, SHIP_EN, and PE.
PANEL_UNIT:
YES
Is the LVDS signal input to connector LW of the panel module?
NO
Wire harness (LW) is checked.
YES
Check the panel module.
No picture on the display (2)
Does not the picture come out when VHF/UHF is received?
Is the video signal (TUNER_CVBS) output from pin (6) of
TUNER(TU7501)?
TUNER(TU7501)?
NO
Check whether I2C signal normally communicates between
TU7501 and IC7508 (COFDM - DEMOD.)
TU7501 and IC7508 (COFDM - DEMOD.)
YES
Is the video signal (TUNER_CVBS) sent to pins (24) of
IC503(AV_SW.)?
IC503(AV_SW.)?
NO
Check the line between TU7501 and IC503.
(IC7503, etc.)"
(IC7503, etc.)"
YES
Refer to “The picture doesn't appear in all modes.”
LC-52DH65E/S, LC-52DH66E
4 – 7
No picture on the display (3)
Does not the picture come out when DTV is received?
Is the prescriptive voltage supplied a power supply terminal of a
TUNER circuit and IC7508 (COFDM - DEMOD)?
(Refer to a circuit diagram.)
TUNER circuit and IC7508 (COFDM - DEMOD)?
(Refer to a circuit diagram.)
NO
Each power supply circuit is checked.
(IC7502, IC9607, IC9604, etc.)
(IC7502, IC9607, IC9604, etc.)
YES
Is IF signal sent from pins(16, 17) of TUNER(TU7501) to pins(40,
39) of IC7508(COFDM-DEMOD.)?
39) of IC7508(COFDM-DEMOD.)?
NO
Check the tuner, IC7508 and their peripheral circuits.
Replace as required.
Replace as required.
YES
Check whether I2C signal normally communicates between
TU7501 and IC7508 (COFDM - DEMOD.)
TU7501 and IC7508 (COFDM - DEMOD.)
NO
YES
Does X7501(20.25MHz) oscillate?
NO
Check X7501 and its peripheral circuits.
YES
Is TS data (FECLK, FESTR_PSYNC, FED_D, FEVAL_DEN)
being output from IC7508 to IC8101(DIGITAL AV DECODER &
MAIN CPU & VIDEO PROCESSER)?
being output from IC7508 to IC8101(DIGITAL AV DECODER &
MAIN CPU & VIDEO PROCESSER)?
NO
Check whether a control signal is normal between IC7508 and
IC9101(CPLD). (FE_RST, N_TUNER_INT, FERR_UNCOR,
AGCSEL)
IC9101(CPLD). (FE_RST, N_TUNER_INT, FERR_UNCOR,
AGCSEL)
YES
Is the TS data input to pin (AE4/FERR_UNCOR), (AG5/FECLK),
(AF4/FESTR_PSYNC), (AA4/FED_D) and (AF5/FEVAL_DEN) of
IC5001(H.264_DECODER)?
(AF4/FESTR_PSYNC), (AA4/FED_D) and (AF5/FEVAL_DEN) of
IC5001(H.264_DECODER)?
NO
Check the line between IC7508 and IC5001.
YES
Is the TMDS signal output from pin (U33, U34/ TMDSH_CLK_P/
N), (T33, T34/ TMDSH_D0_P/N), (R33, R34/ TMDSH_D1_P/N),
and (P33, P34/ TMDSH_D2_P/N) of IC5001?
N), (T33, T34/ TMDSH_D0_P/N), (R33, R34/ TMDSH_D1_P/N),
and (P33, P34/ TMDSH_D2_P/N) of IC5001?
NO
Check IC5001 and its peripheral circuits.
YES
Is the TMDS signal input to pin (39, 38/ TMDSH_CLK_P/N), (42,
41/ TMDSH_D0_P/N), (45, 44/ TMDSH_D1_P/N), and (48, 47/
TMDSH_D2_P/N) of IC5301(TMDS_SW.)?
41/ TMDSH_D0_P/N), (45, 44/ TMDSH_D1_P/N), and (48, 47/
TMDSH_D2_P/N) of IC5301(TMDS_SW.)?
NO
Check the line between IC5001 and IC5301.
YES
Is the TMDS signal output from pin (26, 27/ TMDS3H_CLK_P/N),
(23, 24/ TMDS3H_D0_P/N), (20, 21/ TMDS3H_D1_P/N), and
(17, 18/ TMDS3H_D2_P/N) of IC5301?
(23, 24/ TMDS3H_D0_P/N), (20, 21/ TMDS3H_D1_P/N), and
(17, 18/ TMDS3H_D2_P/N) of IC5301?
NO
Check IC5301 and its peripheral circuits.
YES
Is the TMDS signal input to pin (6, 4/ TMDS3H_CLK_P/N), (8, 7/
TMDS3H_D0_P/N), (11, 10/ TMDS3H_D1_P/N), and (14, 13/
TMDS3H_D2_P/N) of IC1507(TMDS_SW.)?
TMDS3H_D0_P/N), (11, 10/ TMDS3H_D1_P/N), and (14, 13/
TMDS3H_D2_P/N) of IC1507(TMDS_SW.)?
NO
Check the line between IC5301 and IC1507.
YES
Is the TMDS signal output from pin (26, 27/ TMDS_CLK_P/N),
(23, 24/ TMDS_D0_P/N), (20, 21/ TMDS_D1_P/N), and (17, 18/
TMDS_D2_P/N) of IC1507?
(23, 24/ TMDS_D0_P/N), (20, 21/ TMDS_D1_P/N), and (17, 18/
TMDS_D2_P/N) of IC1507?
NO
Check IC1507 and its peripheral circuits.
YES
Is the TMDS signal input to pin (K1, K2/ TMDS_CLK_P/N), (L1,
L2/ TMDS_D0_P/N), (M1, M2/ TMDS_D1_P/N), and (N1, N2/
TMDS_D2_P/N) of IC8101(DIGITAL AV DECODER & MAIN
CPU & VIDEO PROCESSER)?
L2/ TMDS_D0_P/N), (M1, M2/ TMDS_D1_P/N), and (N1, N2/
TMDS_D2_P/N) of IC8101(DIGITAL AV DECODER & MAIN
CPU & VIDEO PROCESSER)?
NO
Check the line between IC1507 and IC8101.
YES
Refer to “The picture doesn't appear in all modes”
LC-52DH65E/S, LC-52DH66E
4 – 8
[External input EXT1,EXT2] No picture on the display (4)
Does not the picture of the CVBS signal input to EXT1 go out?
Does not the picture of the CVBS signal input to EXT2 go out?
Does not the picture of the CVBS signal input to EXT2 go out?
Is CVBS signal sent to pin(20) of EXT1 (SC502)?
NO
Check the setting of an external input device that connects with
EXT1.
EXT1.
Is CVBS signal sent to pin(20) of EXT2(SC501)?
NO
Check the setting of an external input device that connects with
EXT2.
EXT2.
YES
Is CVBS signal from EXT1(SC502) sent to pin(100) of
IC503(AV_SW.)?
IC503(AV_SW.)?
NO
Check the line between SC502 and IC503.
Is CVBS signal from EXT2(SC501) sent to pin(6) of
IC503(AV_SW.)?
IC503(AV_SW.)?
NO
Check the line between SC501 and IC503.
YES
Is CVBS signal output from pin(71) of IC503?
NO
Check the IC503 and their peripheral circuits.
YES
Is CVBS signal sent to pin(V4) of IC8101(DIGITAL AV
DECODER & MAIN CPU & VIDEO PROCESSER) from pin(71)
of IC503?
DECODER & MAIN CPU & VIDEO PROCESSER) from pin(71)
of IC503?
NO
Check the line between IC503 and IC8101.
YES
Refer to “The picture doesn't appear in all modes.”
[External input EXT1,EXT2] No picture on the display (5)
Does not the picture of the Y/C video signal input to EXT1 go out?
Does not the picture of the Y/C video signal input to EXT2 go out?
Does not the picture of the Y/C video signal input to EXT2 go out?
Is Y/C video signal sent to pins(20)/Y and (15)/C of
EXT1(SC502)?
EXT1(SC502)?
NO
Check the setting of an external input device that connects with
EXT1.
EXT1.
Is Y/C video signal sent to pins(20)/Y and (15)/C of
EXT2(SC501)?
EXT2(SC501)?
NO
Check the setting of an external input device that connects with
EXT2.
EXT2.
YES
Is Y/C signal from EXT1(SC502) sent to pins(2)/Y, (86)/C of
IC503(AV_SW.)?
IC503(AV_SW.)?
NO
Check the line between SC502 and IC503.
Is Y/C signal from EXT2(SC501) sent to pins(8)/Y, (92)/C of
IC503(AV_SW.)?
IC503(AV_SW.)?
NO
Check the line between SC501 and IC503.
YES
Is Y/C signal output from pins(71)/Y, (70)/C of IC503?
NO
Check the IC503 and their peripheral circuits.
YES
Is Y/C signal sent to pins(V4)/Y, (P4)/C of IC8101(DIGITAL AV
DECODER & MAIN CPU & VIDEO PROCESSER) from pins(71)/
Y, (70)/C of IC503?
DECODER & MAIN CPU & VIDEO PROCESSER) from pins(71)/
Y, (70)/C of IC503?
NO
Check the line between IC503 and IC8101.
YES
Refer to “The picture doesn’t appear in all modes.”
Click on the first or last page to see other LC-52DH65E (serv.man4) service manuals if exist.