Sharp LC-22LE320 Service Manual page 107

Does not the sound of the audio signal input to HDMI1/2/3 go out?
Is picture of the signal input from HDMI1/2/3 displayed?
Refer to "No sound output in all modes".
The audio signal of UHF/VHF is not output from SCART1.
TEREMINAL UNIT:
Is audio signal output from IC U106 sent to pin
(3)(SCT1_AUL_OUT) and pin(1)(SCT1_AUR_OUT) of
SCART1(CN151)?
Is audio signal output from IC U401 is sent to pin (2)(1IN-) and pin
(6)(2IN-)of IC U106?
Check IC U401 and its peripheral circuits.
The audio signal of UHF/VHF/MONITOR is not output from SCART2.
TEREMINAL UNIT:
Is audio signal output from IC U605 sent to
pin(3)(SCT2_AUL_OUT) and pin(1)(SCT2_AUR_OUT) of
Is audio signal output from IC U401 is sent to pin (2)(1IN-) and pin
(6)(2IN-)of IC U107?
Check IC U401 and its peripheral circuits.
LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
No sound from external input devices (5)
↓
↓
↓YES
The audio signal is not output (1)
↓
↓
↓NO
↓NO
The audio signal is not output (2)
↓
↓
↓NO
↓NO
2008-03-14
NO Refer to "Does not the picture of the HDMI signal input to
HDMI1/2/3 go out?".
YES Check the connection to SCART1 and external devices.
YES
Check the line between IC U401 and IC U106.
YES Check the connection to SCART2 and external devices.
YES
Check the line between IC U401 and IC U107
107