Sharp LC-46DH66E Service Manual page 38

LC-46DH65E/S, LC-46DH66E
No audio signal output from EXT1/EXT2 terminal.(HDMI/DTV(H.264))
Is there a audio output signal in pins(3/L-ch) and (1/R-ch) of
EXT1(SC502)?
Is there a audio output signal in pins(3/L-ch) and (1/R-ch) of
EXT2(SC501)?
<EXT1>
Is SC-MUTE [pin(67) of IC9101(CPLD)] at H?
<EXT2>
Is SC2-MUTE [pin(65) of IC9101(CPLD)] at H?
<EXT1>
Is there a audio output signal in pins(39/SC1_OUT_L) and (38/
SC1_OUT_R) of IC503(AV_SW)?
<EXT2>
Is there a audio output signal in pins(37/SC2_OUT_L) and (36/
SC2_OUT_R) of IC503(AV_SW)?
<EXT1>When the HDMI signal
Is there a audio input signal in pins(60/L1) and (59/R1) of
IC503(AV_SW)?
<EXT2>When the HDMI signal
Is there a audio input signal in pins(58/L2) and (57/R2) of
IC503(AV_SW)?
When the DTV(H.264) signal
Is there a audio input signal in pins(44/L9) and (43/R9) of
IC503(AV_SW)?
<EXT1>When the HDMI signal
Is there a audio output signal in pins(1/OUTTNL) and (2/OUT-
TNR) of IC1302(DSP)?
<EXT2>When the HDMI signal
Is there a audio output signal in pins(17/OUT2L) and (18/
OUT2R) of IC1302(DSP)?
When the DTV(H.264) signal
Is there a audio input signal in pins(11/AOUT_L) and (10/
AOUT_R) of IC504(AUDIO_DAC)?
When the HDMI signal
Is there signal of HDMI_SD0/WS/SCK input to pin (76, 77, 78) of
IC1302?
When the DTV(H.264) signal
Is H.264_I2S signal input to pin (13/H.264_I2S_MCLK), (3/
H.264_I2S_SCLK), (6/H.264_I2S_LRCLK) and (10/
H.264_I2S_DATA) of IC1306 (SW.)?
When the HDMI signal
Is there signal of HDMI_SD0/WS/SCK output to pin (C10, E10,
D10) of IC8101(DIGITAL AV DECODER & MAIN CPU & VIDEO
PROCESSER)?
When the DTV(H.264) signal
Is H.264_I2S signal output from pin (D26/H.264_I2S_MCLK),
(E24/H.264_I2S_SCLK), (E26/H.264_I2S_LRCLK) and (A25/
H.264_I2S_DATA) of IC5001 (H.264_DECODER)?
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The audio signal is not output (1)
NO
NO
NO
NO
NO
NO
YES Check the setting of an external input device that connects with
EXT1.
YES Check the setting of an external input device that connects with
EXT2.
YES Check the peripheral circuits of IC9101 and SC-MUTE.
(Q503, Q505, etc.)
YES Check the peripheral circuits of IC9101 and SC2-MUTE.
(Q502, Q504, etc.)
YES Check the line between IC503 and SC502.
YES Check the line between IC503 and SC501.
YES Check IC503 and its peripheral circuits.
YES Check the line between IC1302 and IC503.
YES Check the line between IC504 and IC503.
YES Check IC1302 and its peripheral circuits.
YES Check IC1306, IC504 and its peripheral circuits
No Check IC8101 and its peripheral circuits.
NO Check IC5001 and its peripheral circuits.
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