36
LC-26GA5E
LC-32GA5E
LC-32GA8/LC-32BV8
LC-37GA8/LC-37BV8
Troubleshooting Table (continued)
29
LC-32/37GA8E/RU
LC-32/37BV8E/RU
TROUBLESHOOTING TABLE
(Continued)
No sound except from speakers (3)
Check audio input signal of pin (31) of IC3002 (VCT), pins (18)
and (33) of the power line, pins (84) and (83) of I2C-LINE, and
peripheral circuits.
NO
NO
NO
NO
No audio output from the
headphones
No audio output from EXT1
(SCART) terminal.
NO
Is there audio output on pins
(2) and (3) of the headphone
terminal (J1301)?
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 input/output signal of
pins (3) and (5)/(1) and (7) of
IC303 (OP-AMP) normal?
NO
NO
YES
YES
NO
YES
NO
NO
NO
YES
YES
Is audio output signal (SPK-
OUT L/R) properly sent from
pins (28) and (27) of IC3002
(VCT)?
Check the connection to
EXT1 (J1101) and external
devices.
Check the connection to
EXT2 (J1101) and external
devices.
Is S-MUTE-LINE [IC1710 (pin
100)] or S2-MUTE-LINE
[IC3003 (pin 26)] at H?
(Check Q1102/Q1101
operation.)
Is audio signal sent from pins
(22) and (21) of IC3002?
Check the audio signal
output line from pins (22) and
(21) of IC3002 to
Q1103/Q1104/Q1201/Q1202.
Check the connection to
AUDIO OUTPUT terminal
(J1201) and external devices.
Is S-MUTE-LINE [IC1710 (pin
100)] at H?
(Check Q1204/Q1203
operation.)
Is audio signal sent to pins
(3) and (1) of EXT1 (J1101)?
Is S-MUTE-LINE [IC1710
(pin 100)] at H?
(Check Q1106/Q1105
operation.)
Is audio signal sent from
pins (24) and (23) of
IC3002?
Check the audio signal
output line from pins (24)
and (23) of IC3002 to pins
(3) and (1) of EXT1.
Check the power supply 8/5
V pins (18) and (33) of
IC3002 and peripheral
circuits.
Is audio signal sent to pins
(24) and (22) of EXT2
(J1101)?
Is audio signal sent to pins
(13) and (15) [L/R (white)
(red)] of AUDIO OUTPUT
terminal (J1201)?
No audio output from EXT2
(SCART) terminal.
No audio output from AUDIO
OUTPUT terminal.
