Sharp PRO-60X5FD Service Manual page 68

PRO-60/70X5FD
[INPUT-1 input]
Is INPUT-1 selected on the input select menu screen?
[INPUT-2 input]
Is INPUT-2 selected on the input select menu screen?
[INPUT-3 input]
Is INPUT-3 selected on the input select menu screen?
[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?
YES
[INPUT-1 input]
If no video appears, refer to "No external input video (HDMI) [INPUT-1]".
[INPUT-2 input]
If no video appears, refer to "No external input video (HDMI) [INPUT-2]".
[INPUT-3 input]
If no video appears, refer to "No external input video (HDMI) [INPUT-3]".
[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]".
Is the audio output selected for "VARIABLE" on the menu screen?
YES
Does the digital audio signal come from pins (Y31/Y30/V27) (CPU_AOBK/AOLRCK/AOSDATA0) of IC3303 (CPU) to pin (8/9/7) (SP_BCLK/
SP_LRCLK/SP_DATA) of IC2701 (Audio DSP)?
NO
Check the line between IC3303 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
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)?
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?
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.
No audio (4)
INPUT-1 No audio (HDMI connected)
INPUT-2 No audio (HDMI connected)
INPUT-3 No audio (HDMI connected)
INPUT-4 No audio (HDMI connected)
INPUT-5 No audio (HDMI connected)
NO
Refer to ": No external input video [INPUT-1/2/3/4/5]".
NO
Set the audio output to "FIXED".
NO Check IC2701 and its peripheral circuits. (X2701, etc.).
• About the L/R Speakers.
NO
Check IC2703 and its peripheral circuits.
• About the Subwoofer Speaker.
Check IC2702 and its peripheral circuits.
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