Sharp Aquos LC-60LE600U, Service Manual

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LC-60/70LE600U
6 – 6
No audio (1)
VIDEO No audio COMPONENT No audio
Is VIDEO selected on the input select menu screen? Is COMPONENT selected on the input select menu screen?
YES
NO
YES
NO
Refer to “: No external input video [VIDEO]”. Refer to “: No external input video [COMPONENT]”.
Is the audio output selected for “VARIABLE” on the menu screen? Is the audio output selected for “VARIABLE” on the menu screen?
YES
NO
YES
NO
Set the audio output to “FIXED”. Set the audio output to “FIXED”.
Does the audio signal come from pins (5) (L) and (4) (R) of input
terminal (J508) to the terminal on IC3301 side of C3329 (L) and
C3330 (R)? Does the audio signal come from pins (2) (L) and (4) (R) of input terminal
(J504) to the terminal on IC3301 side of C3331 (L) and C3332 (R)?
YES
NO
YES
NO
Check the line between J508 and IC3301. Check the line between J504 and IC3301.
Does the I2S audio signal come from terminals on IC3301 side of R3413
(I2S_MCLK), R3414 (I2S_SCLK), R3415 (I2S_LRCLK), and R3416 (I2S_DAT) to
pins (5) (MCK), (7) (SCLK), (8) (LRCLK), and (5) (SDATA) of IC2704 (AMP)?
YES
NO
Check IC3301 and its peripheral circuits.
Check the line between IC3301 and IC2704.
(N_AMP_RST, SP_MUTE etc.)
Is the audio output from IC2704 as specified? NO Check IC2704 and its peripheral circuits.
YES
Check the connector (P2701), speakers and their peripheral circuits.