Sharp lc-32rd8 Service Manual page 44

LC-32RD8E/S/RU-BK/GY (1st Edition)
Does not the sound of the audio signal input to EXT3 go out?
MINI AV UNIT:
Is audio signal output from pins(5/IN3L), (4/IN3R) of input
terminal J1002 to pins(8), (6) of connector SC1001?
MAIN UNIT:
Is audio signal input to pins(8/IN3L), (6/IN3R) of connector
P1001?
Is audio signal input to pins(1/IN3L), (6/IN3R) of IC1301
(AUDIO_SELECTOR)?
Is the audio signal sent to pins(15/AIN4L), (11/AIN4R) of
IC1301?
Is audio signal input from pins(15/AIN4L), (11/AIN4R) of IC1301 to pins(16, 15) of IC3001 (MAIN_MICON)?
Refer to "No sound output in all modes"
No sound from external input devices (2)
YES
YES
YES
YES
YES
NO
Check connection of between from J1002 to SC1001 and the exter-
nal input device.
NO
Check the connector(SC1001/ P1001).
NO
Check the line between P1001 and IC1301.
NO
Check IC1301 and its peripheral circuits.
Check the line between IC1301 and IC3001.
4 – 5
NO