Sharp LC-19LE320, Service Manual, Page: 80 / 367

LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
80
No sound from external input devices (3)
↓
Does not the sound of the audio signal input to AV3(Composite) go out?
MAIN UNIT:
↓
↓ 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
No sound from external input devices (5)
↓
Does not the sound of the audio signal input to HDMI go out?
↓
↓ YES
Is the audio signal properly sent to pin (4)(AV3_AudioLIN) and pin
(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? 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?
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?
NO
Check the line between CN102 and IC U401.
Refer to
“
No sound output in all modes
”
.
Is picture of the signal input from HDMI displayed? NO Refer to “ Does not the picture of the HDMI signal input to HDMI
go out?
”
.