Service manual

LC-60LE631M/X-WH
6 – 4
No audio heard (3)
No HDMI sound heard. HDMI1
(*INPUT 1 is digital audio.)
.”)IMDH(neercsnooedivtupnilanretxeoNni1IMDH“otrefeRON?neercsnoraeppaegamiIMDHehtseoD
YES
.DIDEehtkcehCON.1IMDHmorftuptuooiduaoN
YES
Are waveforms input in to the pin F1, F2, G1, G2, G3, H1, H2 and
H3 of IC3303 normally and I2S output normally?
Are waveforms input in to the pin A8, C7, B7 and D8 of IC3303
normally and I2S output 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 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.