Sharp LC-60LE631M-WH, Руководство по обслуживанию

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LC-60LE631M/X-WH
6 – 6
No audio heard (5)
No PC audio output
YES
Pin (2) of J506: Is L-ch input into the pin (AC2) of IC3303?
Pin (3) of J506: Is R-ch input into the pin (AB2) of IC3303?
YES
Are I2S signal output at pin A8, C7, B7 and D8 of IC3303 normally? 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
peripheral circuits.
YES
Is there AMP_LRCLK signal input at pin(8) of IC2704? NO Check connection between IC2707 and IC2704 and its
peripheral circuits.
YES
Is the L-ch audio signal output at pin(28) and (30) of IC2704 normal? NO Check IC2704 and its peripheral circuits.
Is the R-ch audio signal output at pin(12) and (14) of IC2704 normal?
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.