LC-32RD8E/S/RU-BK/GY (1st Edition)
4 – 9
The audio signal is not output (4)
No sound from HEADPHONE_OUTPUT terminal.
Is the HP_PLUG signal input into pin(208) of
MAIN_UNIT's IC3001 (MAIN_MICON) from pin(6) of a
HEADPHONE_OUTPUT terminal J1003?
NO
Check the line between J1003 and IC3001.
(SC1001/P1001, IC3001, etc.)
YES
Is the audio signal output to pins(2/L-ch), (3/R-ch) of
HEADPHONE_OUTPUT terminal J1003?
YES
Check HEADPHONE (J1003) or peripheral circuits.
NO
Is the audio signal input into pins(3/L-ch), (1/R-ch) of con-
nector SC1001 from pins(3/L-ch), (1/R-ch) of connector
P1001?
YES
Check the line between P1001 and J1003.
(SC1001/P1001, etc.)
NO
Is HP-MUTE-LINE [pin(40) of IC2302(SUB_MICON)] at
H?
YES
Check the peripheral circuits of IC2302 and HP-MUTE_LINE.
(Q1001, etc.)
NO
Is audio signal sent to pins(26/L-ch), (25/R-ch) of
IC3001(MAIN_MICON)?
YES
Check the line between P1001 and IC3001.
(IC1002, etc.)
NO
Check IC3001 and its peripheral circuits.
