Sharp LC-26SH330, Service Manual

Page: 48 / 223

LC-26SH330, LC-32SH330, LC-42SH330
48
The audio signal is not output (1)
↓
The audio signal of UHF/VHF is not output from SCART1.
TEREMINAL UNIT:
↓
↓ NO
↓ NO
The audio signal is not output (2)
↓
No audio signal output from LINE_AUDIO_OUTPUT terminal.
TEREMINAL UNIT:
↓
↓ NO
↓ NO
The audio signal is not output (3)
↓
No audio signal output from SPDIF_OUTPUT terminal.
TEREMINAL UNIT:
↓
↓ NO
Is audio signal output from IC U401 is sent to pin (2) (1IN-) and
pin (6) (2IN-)of IC U106?
Is audio signal output from IC U106 sent to pin
(3)(SCT1_AUL_OUT) and pin(1)(SCT1_AUR_OUT) of
SCART1(CN151)?
YES
Check the connection to SCART1 and external devices.
YES
Check the line between IC U401 and IC U106.
Check IC U401 and its peripheral circuits.
Is audio signal output from IC U401 is sent to pin (2) (1IN-) and
pin (6) (2IN-)of IC U107?
Is audio signal output from IC U107 sent to
pin(4)(Audio_Line_Out_L) and pin (6)(Audio_Line_Out_R) of
LINE_AUDIO_OUT connector(CN140)?
YES
Check the connection to LINE_AUDIO_OUT and external
devices.
YES Check the line between IC U401 and IC U107.
Check IC U401 and its peripheral circuits.
Check IC U401 and its peripheral circuits.
Is ASPDIF audio signal output from pin (K33) of IC U401 to pin
(6) of connector CN116?
YES
Check the connection to SPDIF_OUT and external devices.