LC-42/46/52D85X
6 – 3
No sound (during the reception of TV (DIGITAL) broadcasting)
Does not the sound go out though the picture has 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?
NO
Check the line between IC8101 and SC1101, and their peripheral
circuits.
SUB UNIT:
YES
Is DTV_SPDIF audio signal input from pin(42) of connector
SC501 to pin(4) of IC1404(CODEC)?
NO
Check the line between SC501 and IC1404.
(SC1101/SC501, etc.)
YES
Refer to “No sound output in all modes”.
No sound from external input devices (1)
Does not the sound of the audio signal input to INPUT1 go out?
Does not the sound of the audio signal input to INPUT2 go out?
SUB UNIT:
INPUT1
Is the audio signal properly sent to pins (5) (IN1_L) and (4)
(IN1_R) of INPUT1(J1704)?
NO
Check the setting of an external input device that connects of
J1704.
INPUT2
Is the audio signal properly sent to pins (5) (IN2_L) and (4)
(IN2_R) of INPUT2(J1702)?
NO
Check the setting of an external input device that connects of
J1702.
YES
INPUT1
Is the audio signal properly sent to pins (51) (IN1_L) and (52)
(IN1_R) of IC1404(CODEC)?
NO
Check the line between J1704 and IC1404.
INPUT2
Is the audio signal properly sent to pins (53) (IN2_L) and (54)
(IN2_R) of IC1404(CODEC)?
NO
Check the line between J1702 and IC1404.
YES
Refer to “No sound output in all modes”.
