Sharp LC-60LE600U Service Manual page 39

[PC analog audio input] PC IN No audio
Is PC IN selected on the input select menu screen?
Refer to ": No external input video [PC IN]".
YES
Is the audio output selected for "VARIABLE" on the menu screen?
Set the audio output to "FIXED".
YES
Is the "PC Audio Select" selected for "PC IN" on the menu screen?
Set the "PC Audio Select" to "PC IN".
YES
Does the audio signal come from pins (2) (L) and (3) (R) of input terminal (J506) to
the terminal on IC3301 side of C3327 (L) and C3328 (R)?
YES
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
Is the audio output from IC2704 as specified?
YES
Check the connector (P2701), speakers and their peripheral circuits.
No audio (2)
NO
NO
NO
6 – 7
[HDMI analog audio input] HDMI1 No audio
Is HDMI1 selected on the input select menu screen?
Refer to ": No external input video [HDMI1]".
YES
Is the audio output selected for "VARIABLE" on the menu screen?
Set the audio output to "FIXED".
YES
Is the "PC Audio Select" selected for "HDMI1" on the menu screen?
Set the "PC Audio Select" to "HDMI1".
YES
Is the HDMI audio output selected for "Digital" on the menu screen?
Set the HDMI audio output to "Analog".
YES
NO Check the line between J506 and IC3301.
NO Check IC3301 and its peripheral circuits.
Check the line between IC3301 and IC2704.
(N_AMP_RST, SP_MUTE etc.)
NO Check IC2704 and its peripheral circuits.
LC-60/70LE600U
NO
NO
NO
NO