Sharp LC-60LE810UN Service Manual - Page 62
IC3302 CPU to pin 8/9/7 SP_BCLK/SP_LRCLK/SP_DATA of IC2701 Audio DSP?
UPC - 074000372580
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Page 62 highlights
LC-40/46/52/60LE810UN (1st Edition) No audio (2) [PC analog audio input] INPUT-3 No audio. [HDMI analog audio input] INPUT-4 No audio. Is INPUT-3 selected on the input select menu screen? Is INPUT-4 selected on the input select menu screen? NO Refer to ": No external input video [INPUT-3]". YES Is the audio output selected for "VARIABLE" on the menu screen? NO Refer to ": No external input video [INPUT-4]". YES Is the audio output selected for "VARIABLE" on the menu screen? NO Set the audio output to "FIXED". YES Is the "PC input" - "Audio select for "Video + Audio" on the menu screen? NO Set the audio output to "FIXED". YES Is the "PC input" - "Audio select" selected for "HDMI + Analog" on the menu screen? YES NO Set the "PC input" - "Analog select" to "Video + Audio". YES 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 Set the "PC input" - "Analog select" to "HDMI + Analog. NO Check the line between IC3302 and IC2701, and their peripheral circuits. YES • About the L/R Speakers. NO 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)? 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 peripheral circuits. • About the Subwoofer Speaker. Check the connector (P2702), subwoofer speaker and their peripheral. 6 - 8