Sharp LC-60LE631M-WH, Руководство по обслуживанию

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LC-60LE631M/X-WH
6 – 5
No audio heard (4)
No sound from the HDMI sound input terminal.
(HDMI1 analog audio)
YES
Is there the L-ch audio signal input from pin (2) of external input
terminal J506 (HDMI AUDIO IN) to pin (AC2) of IC3303?
Is there the R-ch audio signal input from pin (3) of external input
terminal J506 (HDMI AUDIO IN) to pin (AB2) of IC3303?
YES
Are I2S signal output at pin A8, C7, B7 and D8 of IC3303 nor-
mally? NO Check peripheral circuits of IC3303.
YES
Is there I2S_LRCLK signal input at pin(9) of IC2707? NO Check connection between IC3303 and IC2707 and its periph-
eral circuits.
YES
Is there AMP_LRCLK signal input at pin(8) of IC2704? NO Check connection between IC2707 and IC2704 and its periph-
eral circuits.
YES
Is the L-ch audio signal output at pin(28) and (30) of IC2704 nor-
mal? NO Check IC2704 and its peripheral circuits.
Is the R-ch audio signal output at pin(12) and (14) of IC2704 nor-
mal?
YES
Are the audio signal L-ch and R-ch output at (4)/(5) and (1)/(3) of
P2702 normal? NO Check circuit between IC2704 & P2702.
YES
Check speakers and their peripheral circuits.