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LC-26GA5E
LC-32GD9E
LC-32GA5E
LC-37GD9E
Troubleshooting Table (continued)
TROUBLESHOOTING TABLE
TROUBLESHOOTING TABLE
No audio output from the
headphones
Is the MUTE button on the
Is there audio output on pins
remote control set to ON?
No audio output from the
(2) and (3) of the headphone
... Set to OFF.
headphones
terminal (J1301)?
NO
Is audio input/output signal of
Is there audio output on pins
pins (3) and (5)/(1) and (7) of
(2) and (3) of the headphone
IC303 (OP-AMP) normal?
terminal (J1301)?
NO
NO
Is audio output signal (SPK-
Is audio input/output signal of
OUT L/R) properly sent from
pins (3) and (5)/(1) and (7) of
pins (28) and (27) of IC3002
IC303 (OP-AMP) normal?
(VCT)?
NO
NO
Is audio output signal (SPK-
Check audio input signal of pin (31) of IC3002 (VCT), pins (18)
OUT L/R) properly sent from
and (33) of the power line, pins (84) and (83) of I2C-LINE, and
pins (28) and (27) of IC3002
peripheral circuits.
(VCT)?
NO
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 sound except from speakers (3)
No audio output from EXT1
(SCART) terminal.
No sound except from speakers (3)
Checklist:
No audio output from EXT1
1) Is the MUTE button on the remote control set to ON? ··· Set to OFF.
(SCART) terminal.
2)
Check the connection to external devices. ··· Is there any improper connection?
Is audio signal sent to pins
Checklist:
NO
(3) and (1) of EXT1 (J1101)?
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?
YES
Check the connection to
Is audio signal sent to pins
NO
EXT1 (J1101) and external
(3) and (1) of EXT1 (J1101)?
devices.
YES
Check the connection to
EXT1 (J1101) and external
devices.
Is S-MUTE-LINE [IC1710
(pin 100)] at H?
(Check Q1106/Q1105
operation.)
NO
Is S-MUTE-LINE [IC1710
(pin 100)] at H?
NO
Is audio signal sent from
(Check Q1106/Q1105
pins (24) and (23) of
operation.)
IC3002?
YES
NO
Check the audio signal
NO
Is audio signal sent from
output line from pins (24)
pins (24) and (23) of
and (23) of IC3002 to pins
IC3002?
(3) and (1) of EXT1.
YES
Check the audio signal
output line from pins (24)
and (23) of IC3002 to pins
(3) and (1) of EXT1.
(Continued)
(Continued)
No audio output from EXT2
(SCART) terminal.
No audio output from EXT2
(SCART) terminal.
Is audio signal sent to pins
NO
(24) and (22) of EXT2
(J1101)?
YES
Is audio signal sent to pins
NO
Check the connection to
(24) and (22) of EXT2
EXT2 (J1101) and external
(J1101)?
devices.
YES
Check the connection to
Is S-MUTE-LINE [IC1710 (pin
EXT2 (J1101) and external
100)] or S2-MUTE-LINE
devices.
[IC3003 (pin 26)] at H?
(Check Q1102/Q1101
operation.)
Is S-MUTE-LINE [IC1710 (pin
NO
100)] or S2-MUTE-LINE
[IC3003 (pin 26)] at H?
(Check Q1102/Q1101
operation.)
NO
Check the power supply 8/5
V pins (18) and (33) of
IC3002 and peripheral
circuits.
Check the power supply 8/5
V pins (18) and (33) of
IC3002 and peripheral
circuits.
29
44
29
LC-32/37GD8E/RU
LC-32/37BT8E/RU
LC-32/37GD8E/RU
LC-32/37BT8E/RU
No audio output from AUDIO
OUTPUT terminal.
No audio output from AUDIO
OUTPUT terminal.
Is audio signal sent to pins
NO
(13) and (15) [L/R (white)
(red)] of AUDIO OUTPUT
terminal (J1201)?
YES
Is audio signal sent to pins
NO
Check the connection to
(13) and (15) [L/R (white)
AUDIO OUTPUT terminal
(red)] of AUDIO OUTPUT
(J1201) and external devices.
terminal (J1201)?
YES
Check the connection to
Is S-MUTE-LINE [IC1710 (pin
AUDIO OUTPUT terminal
100)] at H?
(J1201) and external devices.
(Check Q1204/Q1203
operation.)
NO
Is S-MUTE-LINE [IC1710 (pin
100)] at H?
(Check Q1204/Q1203
operation.)
NO
NO
Is audio signal sent from pins
(22) and (21) of IC3002?
YES
Check the audio signal
output line from pins (22) and
NO
Is audio signal sent from pins
(21) of IC3002 to
(22) and (21) of IC3002?
Q1103/Q1104/Q1201/Q1202.
YES
Check the audio signal
output line from pins (22) and
(21) of IC3002 to
Q1103/Q1104/Q1201/Q1202.
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