Read Sharp LC-46X8E (serv.man8) Parts Guide online
LC-46X8E/S/RU
4 – 3
No sound (during the reception of TV (DIGITAL) broadcasting)
The sound does not come out though the picture come out when DTV is received?
MAIN UNIT:
Is DTV_SPDIF audio signal output from pin (T2) of IC8101 (CPU/
DECODER) to pin (42) of connector SC1101?
Is DTV_SPDIF audio signal output from pin (T2) of IC8101 (CPU/
DECODER) to pin (42) of connector SC1101?
NO
Check the line between IC8101 and SC1101, and their peripheral
circuits.
circuits.
TERMINAL UNIT:
YES
Is DTV_SPDIF audio signal input from pin(42) of connector
SC501 to pin(4) of IC1404(CODEC)?
SC501 to pin(4) of IC1404(CODEC)?
NO
Check the line between SC501 and IC1404.
(SC1101/SC501, etc.)
(SC1101/SC501, etc.)
YES
Refer to “No sound output in all modes”.
No sound from external input devices (1)
The audio input from EXT-1 doesn’t come out.
The audio input from EXT-2 doesn’t come out.
TERMINAL UNIT:
EXT1
Is the audio signal (IN1_L/IN1_R) properly sent to pins (6, 2) of
SCART1 (SC502)?
EXT1
Is the audio signal (IN1_L/IN1_R) properly sent to pins (6, 2) of
SCART1 (SC502)?
NO
Check the setting of an external input device that connects of
SC502.
SC502.
EXT2
Is the audio signal (IN2_L/IN2_R) properly sent to pins (6, 2) of
SCART2 (SC503)?
Is the audio signal (IN2_L/IN2_R) properly sent to pins (6, 2) of
SCART2 (SC503)?
NO
Check the setting of an external input device that connects of
SC503.
SC503.
YES
EXT1
Is the audio signal (IN1_L/IN1_R) properly sent to pins (51, 52) of
IC1404 (CODEC)?
Is the audio signal (IN1_L/IN1_R) properly sent to pins (51, 52) of
IC1404 (CODEC)?
NO
Check the line between SC502 and IC1404.
EXT2
Is the audio signal (IN2_L/IN2_R) properly sent to pins (53, 54) of
IC1404 (CODEC)?
Is the audio signal (IN2_L/IN2_R) properly sent to pins (53, 54) of
IC1404 (CODEC)?
NO
Check the line between SC503 and IC1404.
YES
Refer to “No sound output in all modes”.
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