Sharp LC-26SH7E/RU Service Manual page 86

LC-19SH7E/RU, LC-26SH7E/RU, LC-32SH7E/RU, LC-42SH7E/RU
Does not the sound go out though the picture has come out when DTV is received?
MAIN UNIT:
Is the DIF signal output from pin (20) and pin (21) of TUNER
(TU201)?
Is the DIF signal sent to pin (R25) and pin (T25) of IC U400?
Refer to "No sound output in all modes".
Does not the sound of the audio signal input to SCART1 go out?
Does not the sound of the audio signal input to SCART2 go out?
TEREMINAL UNIT:
Is the audio signal properly sent to pin (6) (SCT1_AUL_IN) and pin
(2) (SCT1_AUR_IN) of SCART1(CN500)?
Is the audio signal properly sent to pin (6) (SCT2_AUL_IN) and pin
(2) (SCT2_AUR_IN) of SCART2(CN501)?
Is the audio signal properly sent to pin (44) (SC1_LIN) and pin (43)
(SC1_RIN) of IC U605?
Is the audio signal properly sent to pin (46) (SC2_LIN) and pin (45)
(SC2_RIN) of IC U605?
Refer to "No sound output in all modes".
Does not the sound of the audio signal input to AV1(Component) go out?
MAIN UNIT:
Is the audio signal properly sent to pin (2) (AV1_AudioLIN) and pin
(4)(AV1_AudioRIN) of CN556?
Is the audio signal properly sent to pin (50) (AV1_LIN) and pin (49)
(AV1_RIN) of IC U605?
Refer to "No sound output in all modes".
No sound (during the reception of TV (DIGITAL) broadcasting)
↓
↓
↓YES
↓YES
No sound from external input devices (1)
↓
↓
↓YES
↓YES
No sound from external input devices (2)
↓
↓
↓YES
↓YES
NO
Check the tuner and its peripheral circuits. Replace as required.
NO
Check IC U400 its peripheral circuits.
NO Check the setting of an external input device that connects of
CN500.
NO
Check the setting of an external input device that connects of
CN501.
NO Check the line between CN500 and IC U605.
NO Check the line between CN501 and IC U605.
NO
Check the connection to CN556 and the external input device.
NO
Check the line between CN556 and IC U605.
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