Sharp LC-19LE430E, Руководство по обслуживанию

Страница: 51 / 206

2008-03-14
LC-19LE430E/UK, LC-22LE430E/UK, LC-26LE430E/UK, LC-32LE430E/UK
51
No sound (during the reception of TV broadcasting)
↓
Does not the sound go out though the picture has come out when TV is received?
MAIN UNIT:
↓
↓ YES
↓ YES
No sound from external input devices (1)
↓
Does not the sound of the audio signal input to SCART go out?
TEREMINAL UNIT:
↓
↓ YES
↓ YES
↓ YES
No sound from external input devices (2)
↓
Does not the sound of the audio signal input to AV (Component) go out?
MAIN UNIT:
↓
↓ YES
↓ YES
↓ YES
Is the IF signal output from pin (13&14) of TUNER (TU101)/ pin
(10&11) of TUNER (TU102)?
NO
Check the tuner and its peripheral circuits. Replace as required.
Refer to
“
No sound output in all modes
”
.
Is the audio signal properly sent to pin (6) (SCT1_AUL_IN) and pin
(2) (SCT1_AUR_IN) of SCART (CN151)? Check the setting of an external input device that connects of
CN151
NO
Is the audio signal properly sent to pin (2&15) of IC U605?
NO
Check the line between CN151 and IC U605
Is the audio signal properly sent to pin (194&196) of IC U401?
Is the audio signal properly sent to pin (2)(AV1_AudioLIN) and pin
(4)(AV1_AudioRIN) of CN116?
NO
Check the connection to CN116 and the external input device.
Is the audio signal properly sent to pin (194&196) of IC U401?
Is the audio signal properly sent to pin (5) and pin (14) of IC U605?
NO
Check the line between CN116 and IC U605.
Is the IF signal sent to pin (184&185) of IC U401?
NO
Check IC U401 its peripheral circuits.
Is the audio signal properly sent to pin (194&196) of IC U401?
Refer to
“
No sound output in all modes
”
.
NO
Check the line between U605 and IC U401
Refer to
“
No sound output in all modes
”
.
NO