Read Sharp LC-37LE320E Service Manual online
LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
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No sound from external input devices (3)
↓
Does not the sound of the audio signal input to AV1 (Component) go out?
MAIN UNIT:
↓
↓YES
↓YES
↓YES
No sound from external input devices (4)
↓
Does not the sound of the audio signal input to AV3(Composite) go out?
MAIN UNIT:
↓
↓YES
↓YES
↓YES
No sound from external input devices (4)
↓
Does not the sound of the audio signal input to VGA go out?
MAIN UNIT:
↓
↓YES
↓YES
↓YES
Is the audio signal properly sent to pin (8) (YPbPrL_IN) and pin (10)
(YPbPrR_IN) of CN111?
(YPbPrR_IN) of CN111?
NO
Check the connection to CN111 and the external input device.
Refer to “No sound output in all modes”.
Is the audio signal properly sent to pin (AD33) and pin (AC34) of IC
U401?
U401?
NO
Check the line between CN111 and IC U401.
Is the audio signal properly sent to pin (4) (AV3_AudioLIN) and pin
(6) (AV3_AudioRIN) of CN136?
(6) (AV3_AudioRIN) of CN136?
NO
Check the connection to CN136 and the external input device.
Refer to “No sound output in all modes”.
Is the audio signal properly sent to pin (AD35) and pin (AB35) of IC
U401?
U401?
NO
Check the line between CN136 and IC U401.
Is the audio signal properly sent to pin (2) (VGA_AudioLIN) and pin
(3) (VGA_AudioRIN) of CN102?
(3) (VGA_AudioRIN) of CN102?
NO
Check the connection to CN102 and the external input device.
Refer to “No sound output in all modes”.
Is the audio signal properly sent to pin (AA36) and pin (Y37) of IC
U401?
U401?
NO
Check the line between CN102 and IC U401.
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