Sharp LC-22LE320 Service Manual page 106

LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
Does not the sound of the audio signal input to AV1 (Component) go out?
MAIN UNIT:
Is the audio signal properly sent to pin (8) (YPbPrL_IN) and pin (10)
(YPbPrR_IN) of CN111?
Is the audio signal properly sent to pin (AD33) and pin (AC34) of IC
U401?
Refer to "No sound output in all modes".
Does not the sound of the audio signal input to AV3(Composite) go out?
MAIN UNIT:
Is the audio signal properly sent to pin (4) (AV3_AudioLIN) and pin
(6) (AV3_AudioRIN) of CN136?
Is the audio signal properly sent to pin (AD35) and pin (AB35) of IC
U401?
Refer to "No sound output in all modes".
Does not the sound of the audio signal input to VGA go out?
MAIN UNIT:
Is the audio signal properly sent to pin (2) (VGA_AudioLIN) and pin
(3) (VGA_AudioRIN) of CN102?
Is the audio signal properly sent to pin (AA36) and pin (Y37) of IC
U401?
Refer to "No sound output in all modes".
No sound from external input devices (3)
↓
↓
↓YES
↓YES
No sound from external input devices (4)
↓
↓
↓YES
↓YES
No sound from external input devices (4)
↓
↓
↓YES
↓YES
NO
Check the connection to CN111 and the external input device.
NO
Check the line between CN111 and IC U401.
NO
Check the connection to CN136 and the external input device.
NO
Check the line between CN136 and IC U401.
NO
Check the connection to CN102 and the external input device.
NO Check the line between CN102 and IC U401.
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