Sharp LC-19SH7E/RU, Service Manual, Page: 60 / 267

LC-19SH7E/RU, LC-26SH7E/RU, LC-32SH7E/RU, LC-42SH7E/RU
60
No sound from external input devices (3)
↓
Does not the sound of the audio signal input to AV3(Composite/Y/C) 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 HDMI1/2/3 go out?
↓
↓ YES
Is the audio signal properly sent to pin (4) (AV3_AudioLIN) and pin
(6) (AV3_AudioRIN) of CN654?
NO
Check the connection to CN654 and the external input device.
Refer to
“
No sound output in all modes
”
.
Is the audio signal properly sent to pin (52) (SIDE_LIN) and pin (51)
(SIDE_RIN) of IC U605? NO Check the line between CN654 and IC U605.
Is the audio signal properly sent to pin (2) (VGA_AudioLIN) and pin
(3) (VGA_AudioRIN) of CN555?
NO
Check the connection to CN555 and the external input device.
Refer to
“
No sound output in all modes
”
.
Is the audio signal properly sent to pin (48) (VGA_LIN) and pin (47)
(VGA_RIN) of IC U605?
NO
Check the line between CN555 and IC U605.
Refer to
“
No sound output in all modes
”
.
Is picture of the signal input from HDMI1/2/3 displayed? NO Refer to
“
Does not the picture of the HDMI signal input to
HDMI1/2/3 go out?
”
.