Sharp LC-70UQ10KN (serv.man3) Service Manual ▷ View online
61
LC-60UQ10
LC-70UQ10
LC-70UQ10
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NO
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↓YES
NO
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↓YES
NO
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↓YES
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↓YES
↓YES
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YES
↓NO
↓YES
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YES
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YES
NO
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↓YES
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Is CVBS_PLUG [2/RCA_CVBS1_PLUG] of J502 at "L"
When selecting “PC” from the “INPUT” menu
Check whether it is selected "HDMI+Analog" by the Audio select
under TV Menu-Setup-Option-Terminal setting-Audio select.
under TV Menu-Setup-Option-Terminal setting-Audio select.
Do audio signals input to pinsof IC3301 (CPU) ?
[AT35 / COMP1_AINR1]
[AU36 / CVBS1_AINR2]
[AT35 / COMP1_AINR1]
[AU36 / CVBS1_AINR2]
Check IC3301 and its peripheral circuits.
Do audio signals input to pins of J502 ?
[6 / RCA_L_ANALOG]
[7 / RCA_R_ANALOG]
[6 / RCA_L_ANALOG]
[7 / RCA_R_ANALOG]
Check the setting of an external input device that connects with
J502.
J502.
Check whether it is selected "Video+Audio" by the Audio select
under TV Menu-Setup-Option-Terminal setting-Audio selec.
under TV Menu-Setup-Option-Terminal setting-Audio selec.
Do audio signals input to pinsof IC3301 (CPU) ?
[AP32 / PC_HDMI_AINL4]
[AR33 / PC_HDMI_AINR4]
[AP32 / PC_HDMI_AINL4]
[AR33 / PC_HDMI_AINR4]
Refer to “The sound is not emitted from the Speaker & Woofer though the picture has come out.”
Do audio signals input to pins of J501 (PC AUDIO_INPUT) ?
Check the setting of an external input device that connects with
J502.
J502.
No sound from external input devices (2)
Check the line between J501 and IC3301.
No sound from external input devices (4)
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)”.
Check the setting of an external input device that connects with
J501.
J501.
When selecting “HDMI 2” from the “INPUT” menu
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 EXT2 go out?
62
LC-60UQ10
LC-70UQ10
LC-70UQ10
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↓
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
Check IC3301 and its peripheral circuits.
↓
↓
↓
↓
↓
↓
↓NO
↓YES
YES
→
↓NO
↓
↓
NO
↓
NO
↓
NO
↓
NO
↓
NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
Check IC3301 and its peripheral circuits.
↓
↓
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
Check IC3301 and its peripheral circuits.
↓
↓
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
Check IC3301 and its peripheral circuits.
Do audio signals output from pins of J503 (HP Jack/AUDIO
OUT)?
[ 2 / HP_L_ANALOG_OUT]
[ 3 / HP_R_ANALOG_OUT]
OUT)?
[ 2 / HP_L_ANALOG_OUT]
[ 3 / HP_R_ANALOG_OUT]
Check the setting of an external input device that connects with
J503.
And check the line between J503 and IC3301 (CPU)
J503.
And check the line between J503 and IC3301 (CPU)
Does not the sound of the audio signal output to Headphone
mode go out?
mode go out?
Check the line between IC1901 and SC650.
No sound from external output device (1)
Check the setting of an external input device that connects with
EXT1.
EXT1.
Check the line between IC3301 and IC503.
No sound from external output device (3)
No sound from HEAD PHONE_OUTPUT/ AUDIO_OUTPUT terminal.
Does not the sound of the audio signal output to Audio out
mode go out?
mode go out?
Does audio signal output from pin of IC1902 ?
[2 / OPTICAL_OUT]
[2 / OPTICAL_OUT]
Does audio signal output from pin of D508 ?
[1 / OPTICAL_OUT]
[1 / OPTICAL_OUT]
Check IC503 and peripheral circuits.
Check the peripheral circuits of IC2002 and AUDIO_MUTE
(Q1901 etc...)
(Q1901 etc...)
No audio signal output to EXT1 terminal.
Do audio signals output from pins of EXT1 (SC650)?
[1 / TUNER_R_OUT]
[3 / TUNER_L_OUT]
[1 / TUNER_R_OUT]
[3 / TUNER_L_OUT]
Check D508 and peripheral circuits.
Is HP_PLUG ［6pin］ of J503 at "H" ?
Check the line between IC3301 and IC1981.
Check the line between IC2601 and SC1503.
Does audio signal output from pin of SC1503 (HDMI3) ?
[14 / ARC_SWOUT]
[14 / ARC_SWOUT]
Check SC1503 and peripheral circuits.
No sound from external output device (2)
Is AUDIO_MUTE(MUTE_A_ALL) [5 pin] of IC1981(HP-AMP) at "L"
?
?
Check the line between IC1981 and SC650.
Do audio signals output from pins of IC1981 ?
[ 3 / HP_R_ANALOG_OUT]
[12 / HP_L_ANALOG_OUT ]
[ 3 / HP_R_ANALOG_OUT]
[12 / HP_L_ANALOG_OUT ]
Check the line between IC1981 and J503.
Does audio signal output from pinof IC2601(HDMI-SW) ?
[48 / ARC_SWOUT]
[48 / ARC_SWOUT]
Do audio signals (HP_MONITOR_L/R) output from pins of IC3301
?
[AN34 / CPU_AL0_ADAC]
[AN35 / CPU_AR0_ADAC]
?
[AN34 / CPU_AL0_ADAC]
[AN35 / CPU_AR0_ADAC]
Does not the sound of the audio signal output to HDMI3(ARC) go out?
Do audio signals output from pins of IC3301 (CPU) ?
[AM34 / CPU_AL1_ADAC]
[AM32 / CPU_AR1_ADAC]
[AM34 / CPU_AL1_ADAC]
[AM32 / CPU_AR1_ADAC]
Check whether it is selected "Headphone" by Headphone/Audio
out select under TV Menu-Setup-Option-Terminal setting-
Headphone/Audio out select.
out select under TV Menu-Setup-Option-Terminal setting-
Headphone/Audio out select.
Do audio signals input to pins of IC1981 ?
[1,2 / HP_MONITOR_R]
[13,14 / HP_MONITOR_L]
[1,2 / HP_MONITOR_R]
[13,14 / HP_MONITOR_L]
Check IC1981 and its peripheral circuits.
Check between IC3301 and IC1901.
Check the line between IC1902 and D508.
Check whether it is selected "Audio out" by Headphone/Audio
out select under TV Menu-Setup-Option-Terminal setting-
Headphone/Audio out select.
out select under TV Menu-Setup-Option-Terminal setting-
Headphone/Audio out select.
Does audio signal (OPT_OUT) output from pin of IC3301(CPU) ?
[AR16 / CPU_ASPDIF0]
[AR16 / CPU_ASPDIF0]
Does audio signal output from pinof IC3301(CPU) ?
[Y32 / CPU_ASPDIF1]
[Y32 / CPU_ASPDIF1]
Check the line between IC3301 and IC2601.
Check IC2601 and peripheral circuits.
Does audio signal input to pin of IC2601 ?
[47 / ARC_SPDIF]
[47 / ARC_SPDIF]
No sound from DIGITAL AUDIO OUTPUT terminal.
Does audio signal input to pin[2] of IC1902 ?
[4 / OPTICAL_OUT]
[4 / OPTICAL_OUT]
Check the peripheral circuits of IC503 and AUDIO_MUTE
(Q505 etc...)
(Q505 etc...)
No sound from external output device (4)
Is AUDIO_MUTE(MUTE_A_ALL) [23pin] of IC2004(UCOM) at
"H"?
"H"?
Do audio signals output from pins of IC1901 ?
[3 / TUNER_R_OUT]
[12 / TUNER_L_OUT]
[3 / TUNER_R_OUT]
[12 / TUNER_L_OUT]
Is AUDIO_MUTE(MUTE_A_ALL) [5 pin] of IC1901 (AMP) at "L" ?
Do audio signals input to pins of IC1901 ?
[1,2 / TUNER_OUTR]
[13,14 / TUNER_OUTL]
[1,2 / TUNER_OUTR]
[13,14 / TUNER_OUTL]
Check IC1901 and its peripheral circuits.
↓
↓
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
Check IC3301 and its peripheral circuits.
↓
↓
↓
↓
↓
↓
↓NO
↓YES
YES
→
↓NO
↓
↓
NO
↓
NO
↓
NO
↓
NO
↓
NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
Check IC3301 and its peripheral circuits.
↓
↓
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
Check IC3301 and its peripheral circuits.
↓
↓
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
Check IC3301 and its peripheral circuits.
Do audio signals output from pins of J503 (HP Jack/AUDIO
OUT)?
[ 2 / HP_L_ANALOG_OUT]
[ 3 / HP_R_ANALOG_OUT]
OUT)?
[ 2 / HP_L_ANALOG_OUT]
[ 3 / HP_R_ANALOG_OUT]
Check the setting of an external input device that connects with
J503.
And check the line between J503 and IC3301 (CPU)
J503.
And check the line between J503 and IC3301 (CPU)
Does not the sound of the audio signal output to Headphone
mode go out?
mode go out?
Check the line between IC1901 and SC650.
No sound from external output device (1)
Check the setting of an external input device that connects with
EXT1.
EXT1.
Check the line between IC3301 and IC503.
No sound from external output device (3)
No sound from HEAD PHONE_OUTPUT/ AUDIO_OUTPUT terminal.
Does not the sound of the audio signal output to Audio out
mode go out?
mode go out?
Does audio signal output from pin of IC1902 ?
[2 / OPTICAL_OUT]
[2 / OPTICAL_OUT]
Does audio signal output from pin of D508 ?
[1 / OPTICAL_OUT]
[1 / OPTICAL_OUT]
Check IC503 and peripheral circuits.
Check the peripheral circuits of IC2002 and AUDIO_MUTE
(Q1901 etc...)
(Q1901 etc...)
No audio signal output to EXT1 terminal.
Do audio signals output from pins of EXT1 (SC650)?
[1 / TUNER_R_OUT]
[3 / TUNER_L_OUT]
[1 / TUNER_R_OUT]
[3 / TUNER_L_OUT]
Check D508 and peripheral circuits.
Is HP_PLUG ［6pin］ of J503 at "H" ?
Check the line between IC3301 and IC1981.
Check the line between IC2601 and SC1503.
Does audio signal output from pin of SC1503 (HDMI3) ?
[14 / ARC_SWOUT]
[14 / ARC_SWOUT]
Check SC1503 and peripheral circuits.
No sound from external output device (2)
Is AUDIO_MUTE(MUTE_A_ALL) [5 pin] of IC1981(HP-AMP) at "L"
?
?
Check the line between IC1981 and SC650.
Do audio signals output from pins of IC1981 ?
[ 3 / HP_R_ANALOG_OUT]
[12 / HP_L_ANALOG_OUT ]
[ 3 / HP_R_ANALOG_OUT]
[12 / HP_L_ANALOG_OUT ]
Check the line between IC1981 and J503.
Does audio signal output from pinof IC2601(HDMI-SW) ?
[48 / ARC_SWOUT]
[48 / ARC_SWOUT]
Do audio signals (HP_MONITOR_L/R) output from pins of IC3301
?
[AN34 / CPU_AL0_ADAC]
[AN35 / CPU_AR0_ADAC]
?
[AN34 / CPU_AL0_ADAC]
[AN35 / CPU_AR0_ADAC]
Does not the sound of the audio signal output to HDMI3(ARC) go out?
Do audio signals output from pins of IC3301 (CPU) ?
[AM34 / CPU_AL1_ADAC]
[AM32 / CPU_AR1_ADAC]
[AM34 / CPU_AL1_ADAC]
[AM32 / CPU_AR1_ADAC]
Check whether it is selected "Headphone" by Headphone/Audio
out select under TV Menu-Setup-Option-Terminal setting-
Headphone/Audio out select.
out select under TV Menu-Setup-Option-Terminal setting-
Headphone/Audio out select.
Do audio signals input to pins of IC1981 ?
[1,2 / HP_MONITOR_R]
[13,14 / HP_MONITOR_L]
[1,2 / HP_MONITOR_R]
[13,14 / HP_MONITOR_L]
Check IC1981 and its peripheral circuits.
Check between IC3301 and IC1901.
Check the line between IC1902 and D508.
Check whether it is selected "Audio out" by Headphone/Audio
out select under TV Menu-Setup-Option-Terminal setting-
Headphone/Audio out select.
out select under TV Menu-Setup-Option-Terminal setting-
Headphone/Audio out select.
Does audio signal (OPT_OUT) output from pin of IC3301(CPU) ?
[AR16 / CPU_ASPDIF0]
[AR16 / CPU_ASPDIF0]
Does audio signal output from pinof IC3301(CPU) ?
[Y32 / CPU_ASPDIF1]
[Y32 / CPU_ASPDIF1]
Check the line between IC3301 and IC2601.
Check IC2601 and peripheral circuits.
Does audio signal input to pin of IC2601 ?
[47 / ARC_SPDIF]
[47 / ARC_SPDIF]
No sound from DIGITAL AUDIO OUTPUT terminal.
Does audio signal input to pin[2] of IC1902 ?
[4 / OPTICAL_OUT]
[4 / OPTICAL_OUT]
Check the peripheral circuits of IC503 and AUDIO_MUTE
(Q505 etc...)
(Q505 etc...)
No sound from external output device (4)
Is AUDIO_MUTE(MUTE_A_ALL) [23pin] of IC2004(UCOM) at
"H"?
"H"?
Do audio signals output from pins of IC1901 ?
[3 / TUNER_R_OUT]
[12 / TUNER_L_OUT]
[3 / TUNER_R_OUT]
[12 / TUNER_L_OUT]
Is AUDIO_MUTE(MUTE_A_ALL) [5 pin] of IC1901 (AMP) at "L" ?
Do audio signals input to pins of IC1901 ?
[1,2 / TUNER_OUTR]
[13,14 / TUNER_OUTL]
[1,2 / TUNER_OUTR]
[13,14 / TUNER_OUTL]
Check IC1901 and its peripheral circuits.
63
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LC-70UQ10
3.3. Picture
↓
↓
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
Check IC3301 and its peripheral circuits.
↓
↓
↓
↓
↓
↓
↓NO
↓YES
YES
→
↓NO
↓
↓
NO
↓
NO
↓
NO
↓
NO
↓
NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
Check IC3301 and its peripheral circuits.
↓
↓
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
Check IC3301 and its peripheral circuits.
↓
↓
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
YES
→
↓NO
Check IC3301 and its peripheral circuits.
Do audio signals output from pins of J503 (HP Jack/AUDIO
OUT)?
[ 2 / HP_L_ANALOG_OUT]
[ 3 / HP_R_ANALOG_OUT]
OUT)?
[ 2 / HP_L_ANALOG_OUT]
[ 3 / HP_R_ANALOG_OUT]
Check the setting of an external input device that connects with
J503.
And check the line between J503 and IC3301 (CPU)
J503.
And check the line between J503 and IC3301 (CPU)
Does not the sound of the audio signal output to Headphone
mode go out?
mode go out?
Check the line between IC1901 and SC650.
No sound from external output device (1)
Check the setting of an external input device that connects with
EXT1.
EXT1.
Check the line between IC3301 and IC503.
No sound from external output device (3)
No sound from HEAD PHONE_OUTPUT/ AUDIO_OUTPUT terminal.
Does not the sound of the audio signal output to Audio out
mode go out?
mode go out?
Does audio signal output from pin of IC1902 ?
[2 / OPTICAL_OUT]
[2 / OPTICAL_OUT]
Does audio signal output from pin of D508 ?
[1 / OPTICAL_OUT]
[1 / OPTICAL_OUT]
Check IC503 and peripheral circuits.
Check the peripheral circuits of IC2002 and AUDIO_MUTE
(Q1901 etc...)
(Q1901 etc...)
No audio signal output to EXT1 terminal.
Do audio signals output from pins of EXT1 (SC650)?
[1 / TUNER_R_OUT]
[3 / TUNER_L_OUT]
[1 / TUNER_R_OUT]
[3 / TUNER_L_OUT]
Check D508 and peripheral circuits.
Is HP_PLUG ［6pin］ of J503 at "H" ?
Check the line between IC3301 and IC1981.
Check the line between IC2601 and SC1503.
Does audio signal output from pin of SC1503 (HDMI3) ?
[14 / ARC_SWOUT]
[14 / ARC_SWOUT]
Check SC1503 and peripheral circuits.
No sound from external output device (2)
Is AUDIO_MUTE(MUTE_A_ALL) [5 pin] of IC1981(HP-AMP) at "L"
?
?
Check the line between IC1981 and SC650.
Do audio signals output from pins of IC1981 ?
[ 3 / HP_R_ANALOG_OUT]
[12 / HP_L_ANALOG_OUT ]
[ 3 / HP_R_ANALOG_OUT]
[12 / HP_L_ANALOG_OUT ]
Check the line between IC1981 and J503.
Does audio signal output from pinof IC2601(HDMI-SW) ?
[48 / ARC_SWOUT]
[48 / ARC_SWOUT]
Do audio signals (HP_MONITOR_L/R) output from pins of IC3301
?
[AN34 / CPU_AL0_ADAC]
[AN35 / CPU_AR0_ADAC]
?
[AN34 / CPU_AL0_ADAC]
[AN35 / CPU_AR0_ADAC]
Does not the sound of the audio signal output to HDMI3(ARC) go out?
Do audio signals output from pins of IC3301 (CPU) ?
[AM34 / CPU_AL1_ADAC]
[AM32 / CPU_AR1_ADAC]
[AM34 / CPU_AL1_ADAC]
[AM32 / CPU_AR1_ADAC]
Check whether it is selected "Headphone" by Headphone/Audio
out select under TV Menu-Setup-Option-Terminal setting-
Headphone/Audio out select.
out select under TV Menu-Setup-Option-Terminal setting-
Headphone/Audio out select.
Do audio signals input to pins of IC1981 ?
[1,2 / HP_MONITOR_R]
[13,14 / HP_MONITOR_L]
[1,2 / HP_MONITOR_R]
[13,14 / HP_MONITOR_L]
Check IC1981 and its peripheral circuits.
Check between IC3301 and IC1901.
Check the line between IC1902 and D508.
Check whether it is selected "Audio out" by Headphone/Audio
out select under TV Menu-Setup-Option-Terminal setting-
Headphone/Audio out select.
out select under TV Menu-Setup-Option-Terminal setting-
Headphone/Audio out select.
Does audio signal (OPT_OUT) output from pin of IC3301(CPU) ?
[AR16 / CPU_ASPDIF0]
[AR16 / CPU_ASPDIF0]
Does audio signal output from pinof IC3301(CPU) ?
[Y32 / CPU_ASPDIF1]
[Y32 / CPU_ASPDIF1]
Check the line between IC3301 and IC2601.
Check IC2601 and peripheral circuits.
Does audio signal input to pin of IC2601 ?
[47 / ARC_SPDIF]
[47 / ARC_SPDIF]
No sound from DIGITAL AUDIO OUTPUT terminal.
Does audio signal input to pin[2] of IC1902 ?
[4 / OPTICAL_OUT]
[4 / OPTICAL_OUT]
Check the peripheral circuits of IC503 and AUDIO_MUTE
(Q505 etc...)
(Q505 etc...)
No sound from external output device (4)
Is AUDIO_MUTE(MUTE_A_ALL) [23pin] of IC2004(UCOM) at
"H"?
"H"?
Do audio signals output from pins of IC1901 ?
[3 / TUNER_R_OUT]
[12 / TUNER_L_OUT]
[3 / TUNER_R_OUT]
[12 / TUNER_L_OUT]
Is AUDIO_MUTE(MUTE_A_ALL) [5 pin] of IC1901 (AMP) at "L" ?
Do audio signals input to pins of IC1901 ?
[1,2 / TUNER_OUTR]
[13,14 / TUNER_OUTL]
[1,2 / TUNER_OUTR]
[13,14 / TUNER_OUTL]
Check IC1901 and its peripheral circuits.
3. Picture
↓
↓
↓YES
↓NO
↓
YES
↓
YES
↓
YES
NO
→
↓YES
NO
→
↓YES
NO
→
↓YES
Check the panel module.
↓
↓
NO
→
↓YES
NO
→
↓YES
Refer to “No picture on the display (1)”
No picture on the display (2)
Does not the picture come out when VHF/UHF is received?
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)]
Do above-mentioned signals output from connector (SC3801) ?
Similarly, is LCD controller's control signal normal ?
LCD Controller Unit:
Do signals input to connector(LW) of LCD Controller Unit ?
Do signals input to connector(LW) of LCD Controller Unit ?
Check IC3301 and its peripheral control circuits.
(IC2002, IC3501, IC3502, IC3503, IC3504, X3301, etc.)
(IC2002, IC3501, IC3502, IC3503, IC3504, X3301, etc.)
Wire harness is checked.
Check the line between IC3301 and SC3801.
Please check each control signal of DET_POW(DET_PNL12V),
PE(PNL_EN).
PE(PNL_EN).
Does video signal output from pins of TUNER(TU1105) ?
[6 /AIF_P_TUNER ]
[7 /AIF_N_TUNER ]
[6 /AIF_P_TUNER ]
[7 /AIF_N_TUNER ]
Check the tuner and its peripheral circuits.
Replace as required.
Replace as required.
Does video signal input to pin of IC3303 (CPU) ?
[AU32 / CPU_TUN_IFP]
[AT32/ CPU_TUN_IFN]
[AU32 / CPU_TUN_IFP]
[AT32/ CPU_TUN_IFN]
Check the line between TU1105 and IC3301.
64
LC-60UQ10
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LC-70UQ10
3. Picture
↓
↓
↓YES
↓NO
↓
YES
↓
YES
↓
YES
NO
→
↓YES
NO
→
↓YES
NO
→
↓YES
Check the panel module.
↓
↓
NO
→
↓YES
NO
→
↓YES
Refer to “No picture on the display (1)”
No picture on the display (2)
Does not the picture come out when VHF/UHF is received?
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)]
Do above-mentioned signals output from connector (SC3801) ?
Similarly, is LCD controller's control signal normal ?
LCD Controller Unit:
Do signals input to connector(LW) of LCD Controller Unit ?
Do signals input to connector(LW) of LCD Controller Unit ?
Check IC3301 and its peripheral control circuits.
(IC2002, IC3501, IC3502, IC3503, IC3504, X3301, etc.)
(IC2002, IC3501, IC3502, IC3503, IC3504, X3301, etc.)
Wire harness is checked.
Check the line between IC3301 and SC3801.
Please check each control signal of DET_POW(DET_PNL12V),
PE(PNL_EN).
PE(PNL_EN).
Does video signal output from pins of TUNER(TU1105) ?
[6 /AIF_P_TUNER ]
[7 /AIF_N_TUNER ]
[6 /AIF_P_TUNER ]
[7 /AIF_N_TUNER ]
Check the tuner and its peripheral circuits.
Replace as required.
Replace as required.
Does video signal input to pin of IC3303 (CPU) ?
[AU32 / CPU_TUN_IFP]
[AT32/ CPU_TUN_IFN]
[AU32 / CPU_TUN_IFP]
[AT32/ CPU_TUN_IFN]
Check the line between TU1105 and IC3301.
↓
↓
↓
↓
↓
↓
NO
→
↓YES
NO
→
↓YES
Refer to “No picture on the display (1)”
↓
↓
NO
→
↓YES
NO
→
↓YES
Refer to “No picture on the display (1)”
↓
↓
NO
→
↓YES
NO
→
↓YES
Refer to “No picture on the display (1)”
Refer to “No sound (during the reception of TV(DIGITAL-Satellite) broadcasting)”
Does CVBS signal input to pin of IC3301 (CPU)
[AR30 / CPU_CVBS2P]
[AR30 / CPU_CVBS2P]
[External input EXT1] No picture on the display (5)
Does not the picture come out when DTV(Satellite) is received?
Does not the picture of the CVBS signal input to EXT1 go out?
Does CVBS signal inputs to pin of EXT1 (SC650) ?
[20 / CVBS-IN]
[20 / CVBS-IN]
Check the setting of an external input device that connects with
EXT1.
EXT1.
No picture on the display (3)
Does not the picture come out when DTV is received?
Refer to “No sound (during the reception of TV(DIGITAL) broadcasting)”
Do Y/C video signals input to pins of EXT1(SC650) ?
[20 / Y]
[15/ C ]
[20 / Y]
[15/ C ]
Check the setting of an external input device that connects with
EXT1.
EXT1.
[External input EXT1] No picture on the display (6)
Does not the picture of the Y/C video signal input to EXT1 go out?
Check the line between SC650 and IC3301.
No picture on the display (4)
Check the line between SC650 and IC3301.
Does Y/C signal input to pins of IC3301 (CPU)
[AR30 / CPU_CVBS2P]
[AR28 / SC_PR0P]
[AR30 / CPU_CVBS2P]
[AR28 / SC_PR0P]
Do RGB signals input to pins of EXT1(SC650) ?
[15 / SC_RED1 ]
[11 / SC_GREEN1]
[ 7 / SC_BLUE1 ]
[15 / SC_RED1 ]
[11 / SC_GREEN1]
[ 7 / SC_BLUE1 ]
Check the setting of an external input device that connects with
EXT1.
EXT1.
Check the line between SC650 and IC3301.
[External input EXT1] No picture on the display (7)
Does not the picture of the R/G/B signal input to EXT1 go out?
Do RGB signals input to pins of IC3301 (CPU) ?
[AR28 / SC_PR0P]
[AT28 / SC_PB0P]
[AP27 / SC_Y0P]
[AR28 / SC_PR0P]
[AT28 / SC_PB0P]
[AP27 / SC_Y0P]
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