Sharp LC-60LE810UN Service Manual - Page 64

No audio 4, INPUT-4 No audio HDMI connected, INPUT-5 No audio HDMI connected, INPUT-6 No audio HDMI

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Page 64 highlights

LC-40/46/52/60LE810UN (1st Edition) No audio (4) INPUT-4 No audio (HDMI connected) INPUT-5 No audio (HDMI connected) INPUT-6 No audio (HDMI connected) INPUT-7 No audio (HDMI connected) [INPUT-4 input] Is INPUT-4 selected on the input select menu screen? [INPUT-5 input] Is INPUT-5 selected on the input select menu screen? [INPUT-6 input] Is INPUT-6 selected on the input select menu screen? [INPUT-7 input] Is INPUT-7 selected on the input select menu screen? YES NO Refer to ": No external input video [INPUT-4/5/6/7]". [INPUT-4 input] If no video appears, refer to "No external input video (HDMI) [INPUT-4]". [INPUT-5 input] If no video appears, refer to "No external input video (HDMI) [INPUT-5]". [INPUT-6 input] If no video appears, refer to "No external input video (HDMI) [INPUT-6]". [INPUT-7 input] If no video appears, refer to "No external input video (HDMI) [INPUT-7]". Is the audio output selected for "VARIABLE" on the menu screen? YES NO Set the audio output to "FIXED". Does the digital audio signal come from pins (F28/F30/G28) (AUBCK/AULRCK/AOSDATA0) of IC3302 (CPU) to pin (8/9/7) (SP_BCLK/SP_LRCLK/SP_DATA) of IC2701 (Audio DSP)? NO Check the line between IC3302 and IC2701, and their peripheral circuits. YES • About the L/R Speakers. Does the digital audio signal come from pins (47/43/44/45) of NO IC2701 (Audio DSP) to pin (5/8/7/6) of IC2703 (AMP for L/R)? • About the Subwoofer speaker. Does the digital audio signal come from pins (47/43/44/46) of IC2701 (Audio DSP) to pin (5/8/7/6) of IC2702 (AMP for SW)? Check IC2701 and its peripheral circuits. (X2701, etc.). YES • About the L/R Speakers. • About the L/R Speakers. Is the audio output from IC2703 as specified? NO Check IC2703 and its peripheral circuits. • About the Subwoofer Speaker. • About the Subwoofer Speaker. IS the audio output from IC2702 as specified? Check IC2702 and its peripheral circuits. Yes • About the L/R Speakers. Check the connector (P2701) L/R speakers and their peripheral circuits. • About the Subwoofer Speaker. Check the connector (P2702), subwoofer speaker and their peripheral. 6 - 10

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LC-40/46/52/60LE810UN (1st Edition)
6 – 10
No audio (4)
INPUT-4 No audio (HDMI connected)
INPUT-5 No audio (HDMI connected)
INPUT-6 No audio (HDMI connected)
INPUT-7 No audio (HDMI connected)
[INPUT-4 input]
Is INPUT-4 selected on the input select menu screen?
[INPUT-5 input]
Is INPUT-5 selected on the input select menu screen?
[INPUT-6 input]
Is INPUT-6 selected on the input select menu screen?
[INPUT-7 input]
Is INPUT-7 selected on the input select menu screen?
YES
NO
Refer to “: No external input video [INPUT-4/5/6/7]”.
[INPUT-4 input]
If no video appears, refer to “No external input video (HDMI) [INPUT-4]”.
[INPUT-5 input]
If no video appears, refer to “No external input video (HDMI) [INPUT-5]”.
[INPUT-6 input]
If no video appears, refer to “No external input video (HDMI) [INPUT-6]”.
[INPUT-7 input]
If no video appears, refer to “No external input video (HDMI) [INPUT-7]”.
Is the audio output selected for “VARIABLE” on the menu screen?
YES
NO
Set the audio output to “FIXED”.
Does the digital audio signal come from pins (F28/F30/G28) (AUBCK/AULRCK/AOSDATA0) of IC3302
(CPU) to pin (8/9/7) (SP_BCLK/SP_LRCLK/SP_DATA) of IC2701 (Audio DSP)?
YES
NO
Check the line between IC3302 and
IC2701, and their peripheral circuits.
•
About the L/R Speakers.
Does the digital audio signal come from pins (47/43/44/45) of
IC2701 (Audio DSP) to pin (5/8/7/6) of IC2703 (AMP for L/R)?
•
About the Subwoofer speaker.
Does the digital audio signal come from pins (47/43/44/46) of
IC2701 (Audio DSP) to pin (5/8/7/6) of IC2702 (AMP for SW)?
NO
Check IC2701 and its peripheral circuits. (X2701, etc.).
YES
•
About the L/R Speakers.
Is the audio output from IC2703 as specified?
•
About the Subwoofer Speaker.
IS the audio output from IC2702 as specified?
NO
•
About the L/R Speakers.
Check IC2703 and its peripheral circuits.
•
About the Subwoofer Speaker.
Check IC2702 and its peripheral circuits.
Yes
•
About the L/R Speakers.
Check the connector (P2701) L/R speakers and their periph-
eral circuits.
•
About the Subwoofer Speaker.
Check the connector (P2702), subwoofer speaker and their
peripheral.