Sharp Aquos LC-60LE600U, Service Manual

Page: 40 / 68

LC-60/70LE600U
6 – 8
No audio (3)
No audio at UHF/VHF broadcast signal reception No audio at digital broadcast signal reception
Is TV selected on the input select menu screen? Is TV selected on the input select menu screen?
YES
NO
YES
NO
Refer to “No video at UHF/VHF broadcast signal
reception”. Refer to “No video at digital broadcast signal reception”.
Is the audio output selected for “VARIABLE” on the menu screen? If no video appears, refer to “No video at digital broadcast signal reception”.
YES
NO
Set the audio output to “FIXED”.
Is there the SIF signal output at pin (8) of tuner (TU1101)? Is the audio output selected for “VARIABLE” on the menu screen?
YES
NO
YES
NO
Check TU1101 and its peripheral circuits.
(TU_I2C_DAT: pin (4), TU_I2C_CLK: pin (5) of
TU1101, etc.) Set the audio output to “FIXED”.
Is there the SIF signal input at the terminal on IC3301 side of
C3335 (SIFP)?
YES
NO
Check the line between IC3301 and TU1101, and their
peripheral circuits.
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)? NO Check IC3301 and its peripheral circuits.
Check the line between IC3301 and IC2704.
(N_AMP_RST, SP_MUTE etc.)
YES
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.