Sharp LC-37XD1E Service Manual page 37

No audio output from
EXT2 (SCART) termi-
nal.
Checklist:
1) Is the MUTE button on the remote control set to ON? ... Set to OFF.
2) Check the connection to external devices....Is there any improper connection?
Is audio signal sent to NO
pins (24) and (22) of
EXT2 (J1101)?
YES
Check the connection to
EXT2 (J1101) and
external devices.
No sound except from speakers (3) -2
ls S-MUTE-LINE [IC1710
(pin 92)] or S2-MUTE-
LINE [IC1710(pin 90)] at
H?
(Check Q1102/Q1101
operation.)
NO
Is audio signal sent from pins (36) and (37) of IC3701?
NO
Check the power supply 8/
5 V pins (39) and (12) of
IC3701 and peripheral cir-
cuits.
4 – 6
ls S-MUTE-LINE
[IC1710 (pin 92)] at H?
NO
(Check 1204/Q1203
operation.)
NO
YES
Check the audio signal
output line from pins
(36) and (37) of
IC3701 to Q1103/
Q1104/Q1201/Q1202.
LC-37XD1E/RU
No audio output from
AUDIO OUTPUT termi-
nal.
Is audio signal sent to
pins (13) and (15) [L/
R (white) (red)] of
AUDIO OUTPUT ter-
minal (J1201)?
YES
Check the connection
to AUDIO OUTPUT
terminal (J1201) and
external devices.