Sharp LC-60LE855E (serv.man3) Service Manual ▷ View online
LC-60LE855E/K,60/70LE857E/RU,858E,70LE857K
6 – 3
No sound (during the reception of TV(DIGITAL-Satellite) broadcasting)
(DIGITAL-Satellite is only function for LE857 series )
Does not the sound go out though the picture has come out when DTV is received?
Do TS signals output to pins [44/S2_TS_CLK, 48/S2_TS_SYNC_HSS, 45/
S2_TS_VAL_HSS, 36~43/S2_TS_D0~7 ] of TUNER(TU1101) ?
S2_TS_VAL_HSS, 36~43/S2_TS_D0~7 ] of TUNER(TU1101) ?
NO
Check the tuner and its peripheral circuits.
Replace as required.
Replace as required.
YES
Do TS signals input to pins [T32/CPU_DEMOD_TSCLK, T35/
CPU_DEMOD_TSSYNC, T31/
CPU_DEMOD_TSVAL,T36,U36,T33,T30,V33,V32,V31,V30/
CPU_DEMOD_TSDATA0~A7] of IC3301 (Digital AV decode & Main CPU) ?
CPU_DEMOD_TSSYNC, T31/
CPU_DEMOD_TSVAL,T36,U36,T33,T30,V33,V32,V31,V30/
CPU_DEMOD_TSDATA0~A7] of IC3301 (Digital AV decode & Main CPU) ?
NO
Check the line between TU1101 and IC3301.
YES
Refer to “The sound is not emitted from the Speaker & Woofer though the picture has come out.”
No sound from external input devices (1)
Does not the sound of the audio signal input to EXT1 go out?
Do audio signals input to pins[2/AUDIO_IN_R, 6/AUDIO_IN_L] of EXT1 (SC505) ? NO
Check the setting of an external input device that con-
nects with EXT1.
nects with EXT1.
YES
Do audio signals input to pins[AU35/SC1_AINL0, AU37/SC1_AINR0] of IC3301
(Digital AV decode & Main CPU) from SC505 ?
(Digital AV decode & Main CPU) from SC505 ?
NO
Check the line between SC505 and IC3301.
YES
Refer to “The sound is not emitted from the Speaker & Woofer though the picture has come out.”
No sound from external input devices (2)
Does not the sound of the audio signal input to EXT1 go out?
•Do audio signals input to pins[2/CVBS1_IN_R, 3/CVBS1_IN_L] of EXT2(J511)?
•Is CVBS_PLUG [4/CVBS1_PLUG] of J511 at "L"
•Is CVBS_PLUG [4/CVBS1_PLUG] of J511 at "L"
NO
Check the setting of an external input device that con-
nects with EXT2.
nects with EXT2.
YES
Do audio signals input to pins [AU36/CVBS1_AINR2, AP34/CVBS1_AINL2] of
IC3301 (Digital AV decode & Main CPU) ?
IC3301 (Digital AV decode & Main CPU) ?
NO
Check IC3301 and its peripheral circuits.
YES
Refer to “The sound is not emitted from the Speaker & Woofer though the picture has come out.”
No sound from external input devices (3)
Does not the sound of the audio signal input to EXT3 go out?
Do audio signals input to pins[7/COMP1_IN_R, 8/COMP1_IN_L] of EXT3(J511) ?
NO
Check the setting of an external input device that con-
nects with EXT3.
nects with EXT3.
YES
Do audio signals input to pins[AT35/COMP1_AINR1, AT37/COMP1_AINL1] of
IC3301 (Digital AV decode & Main CPU) ?
IC3301 (Digital AV decode & Main CPU) ?
NO
Check IC3301 and its peripheral circuits.
YES
Refer to “The sound is not emitted from the Speaker & Woofer though the picture has come out.”
LC-60LE855E/K,60/70LE857E/RU,858E,70LE857K
6 – 4
No sound from external input devices (4)
Does not the sound of the audio signal input to HDMI-2 mode go out?
Does not the sound of the audio signal input to PC/Component
mode go out?
mode go out?
Check whether it is selected "HDMI+Analog" by the Audio select
under Menu-Setup-Option-Terminal setting-Audio select.
under Menu-Setup-Option-Terminal setting-Audio select.
Check whether it is selected "Video+Audio" by the Audio select
under Menu-Setup-Option-Terminal setting-Audio select.
under Menu-Setup-Option-Terminal setting-Audio select.
Do audio signals input to pins [2/PC/HDMI_L , 3/PC/HDMI_R] of J501(PC AUDIO_IN) ?
YES
NO
Check the setting of an external input device that connects with
J501.
J501.
Do audio signals input to pins[AP32/PC_HDMI_AINL4, AR33/
PC_HDMI_AINR4] of IC3301 (Digital AV decode & Main CPU) ?
PC_HDMI_AINR4] of IC3301 (Digital AV decode & Main CPU) ?
NO
Check the line between J501 and IC3301.
YES
Refer to “The sound is not emitted from the Speaker & Woofer though the picture has come out.”
No sound from external input devices (5)
Does not the sound of the audio signal input to HDMI1/2/3/4 go out?
Please Refer to “[External input HDMI-1/2/3/4] No picture on the display (11)”.
No sound from external output device (1)
No audio signal output to EXT1 terminal.
Do audio signals output from pins [1/AUDIO_OUT_R, 3/
AUDIO_OUT_L ] of EXT1 (SC505)?
AUDIO_OUT_L ] of EXT1 (SC505)?
YES
Check the setting of an external input device that connects with
EXT1.
EXT1.
NO
Is AUDIO_MUTE(MUTE_A_ALL) [23pin] of IC2004(UCOM) at "H" ?
YES
Check the peripheral circuits of IC2004 and AUDIO_MUTE
(Q502 etc)
(Q502 etc)
NO
Do audio signals output from pins[ 1/TUNER_R_OUT, 7/
TUNER_L_OUT ] of IC1705(Buffer AMP) ?
TUNER_L_OUT ] of IC1705(Buffer AMP) ?
YES
Check the line between IC1705 and SC505.
NO
Do audio signals input to pins [2/TUNER_OUTR ,6/TUNER_OUTL] of
IC1705 ?
IC1705 ?
YES
Check IC1705 and its peripheral circuits.
NO
Do audio signals(TUNER_OUTR/L) output from pins
[AM34/CPU_AL1_ADAC, AM32/CPU_AR1_ADAC ] of IC3301
(Digital AV decode & Main CPU) ?
[AM34/CPU_AL1_ADAC, AM32/CPU_AR1_ADAC ] of IC3301
(Digital AV decode & Main CPU) ?
YES
Check between IC3301 and IC1705.
NO
Check IC3301 and its peripheral circuits.
LC-60LE855E/K,60/70LE857E/RU,858E,70LE857K
6 – 5
No sound from external output device (2)
No sound from HEAD PHONE_OUTPUT/ AUDIO_OUTPUT terminal.
Does not the sound of the audio signal output to Headphone mode go
out?
out?
Does not the sound of the audio signal output to Audio out mode go
out?
out?
Check whether it is selected "Headphone" by Headphone/Audio out
select under Menu-Setup-Option-Terminal setting-Headphone/Audio
out select.
select under Menu-Setup-Option-Terminal setting-Headphone/Audio
out select.
Check whether it is selected "Audio out" by Headphone/Audio out
select under Menu-Setup-Option-Terminal setting-Headphone/
Audio out select.
select under Menu-Setup-Option-Terminal setting-Headphone/
Audio out select.
Do audio signals output from pins [ 2/MONI_HP_R , 3/MONI_HP_L ] of J504(HP Jack/AUDIO OUT)?
Is HP_PLUG [1pin] of J504 at "H" ?
Is HP_PLUG [1pin] of J504 at "H" ?
NO
YES
Check the setting of an external input device that connects with
J504.
And check the line between J504 and IC3301(Digital AV decode &
Main CPU)
J504.
And check the line between J504 and IC3301(Digital AV decode &
Main CPU)
Is HPOUT_MUTE at "H" ?
Is HP_MUTE [B27] of IC3301 at "H"?
Is AUDIO_MUTE(MUTE_A_ALL) [23pin] of IC2004(UCOM) at "H"?
Is HP_MUTE [B27] of IC3301 at "H"?
Is AUDIO_MUTE(MUTE_A_ALL) [23pin] of IC2004(UCOM) at "H"?
YES
Check the line between J504 and HPOUT_MUTE.
(Q506,Q510,IC3301 & IC2004 etc...)
(Q506,Q510,IC3301 & IC2004 etc...)
NO
Do audio signals output from pins [ 10/MONI_HP_R, 12/MONI_HP_L ]
of IC1702(HP-AMP) ?
of IC1702(HP-AMP) ?
YES
Check the line between IC1702 and J504.
NO
Do audio signals input to pins [14,15] of IC1702 ?
YES
Check IC1702 and its peripheral circuits.
NO
Do audio signals (HP_MONITOR_L/R) output from pins
[AN34/HP_MON_L, AN35/HP_MON_R ] of IC3301 ?
[AN34/HP_MON_L, AN35/HP_MON_R ] of IC3301 ?
YES
Check the line between IC3301 and IC1702.
NO
Check IC3301 and its peripheral circuits.
No sound from external output device (3)
No sound from DIGITAL AUDIO OUTPUT terminal.
Does audio signal output from pin[1] of sound output terminal (D527)
?
?
YES
Check D527 and peripheral circuits.
NO
Does audio signal output from pin[4] of IC503 ?
YES
Check the line between IC503 and D527.
NO
Is AUDIO_MUTE(MUTE_A_ALL) [23pin] of IC2004(UCOM) at "H"?
YES
Check the peripheral circuits of IC503 and AUDIO_MUTE
(Q505 etc...)
(Q505 etc...)
NO
Does audio signal input to pin[2] of IC503 ?
YES
Check IC503 and peripheral circuits.
NO
Does audio signal (OPT_OUT) output from pin[AR16/OPT_OUT] of
IC3301(Digital AV decode & Main CPU) ?
IC3301(Digital AV decode & Main CPU) ?
YES
Check the line between IC3301 and IC503.
NO
Check IC3301 and its peripheral circuits.
LC-60LE855E/K,60/70LE857E/RU,858E,70LE857K
6 – 6
No sound from external output device (4)
Does not the sound of the audio signal output to HDMI1 go out?
Does audio signal output from pin[14] of SC1501 (HDMI1 terminal) ?
YES
Check SC1501 and peripheral circuits.
NO
Does audio signal output from pin[39/HECP] of IC2601(HDMI-SW) ?
YES
Check the line between IC2601 and SC1501.
NO
Does audio signal input to pin[36/HDMI_ARC_SPDIF] of IC2601 ?
YES
Check IC2601 and peripheral circuits.
NO
Does audio signal(HDMI_OPT_OUT) output from pin[Y32/
CPU_ASPDIF1] of IC3301(Digital AV decode & Main CPU)?
CPU_ASPDIF1] of IC3301(Digital AV decode & Main CPU)?
YES
Check the line between IC3301 and IC2601.
NO
Check IC3301 and its peripheral circuits.
No picture on the display (1)
The picture doesn't appear in all modes.
Is the signal output from IC3301(DIGITAL_AV_DECODER_&_MAIN_CPU) respectively?
[VBO_TXA+-(AT4/AU7), VBO_TXB+-(AP3/AR3), VBO_TXC+-(AT2/AU2), VBO_TXD+-(AR1/AR2)]
[VBO_TXA+-(AT4/AU7), VBO_TXB+-(AP3/AR3), VBO_TXC+-(AT2/AU2), VBO_TXD+-(AR1/AR2)]
YES
NO
Check IC3301 and its peripheral control circuits.
(IC2004, IC3501, IC3502, IC3503, IC3504, X3301, etc.)
(IC2004, IC3501, IC3502, IC3503, IC3504, X3301, etc.)
Do above-mentioned signals output from connector
(SC3801) ?
(SC3801) ?
NO
Check the line between IC3301 and SC3801.
YES
Similarly, is LCD controller's control signal normal ?
NO
Please check each control signal of DET_POW(DET_PNL12V),
PE(PNL_EN).
PE(PNL_EN).
YES
LCD Controller Unit:
Do signals input to connector(LW) of LCD Controller Unit ?
Do signals input to connector(LW) of LCD Controller Unit ?
NO
Wire harness (LV) is checked.
YES
Check the panel module.
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