Read Sharp LC-37GA5E (serv.man6) Service Manual online
37
LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-37GA5E
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
No audio output (3) (Output to external terminals)
No audio output from the
headphones.
No audio output from the
SCAR
T1. (EXT
-1)
No audio output from the
SCAR
T2. (EXT
-2)
No audio output from the
EXT
-3.
Are audio signals sent to
the pins (5)(2) of the
headphone terminal
(J402)?
Are audio input/output
signals of the pins
(1)(7)/(3)(5) of IC1351
(HP-AMP) normal?
Are audio output signals
(SPL/R) sent to the pins
(123)(124) of IC1001
(VCTI) normally?
Check the audio input
signals of IC1001 (VCTI),
power supply line, I2C line,
and peripheral circuits.
Confirmation of the settings:
1) Is the MUTE button of REMOCON set to ON? … Set to OFF
.
2) Is MENU-SOUND-LEVELS-EXTERNAL-SCAR
T/A
V
VOL
set to "0=MIN"? … Set the desired volume between "0-100".
3) Check the connection with external equipment. … Is there a connection error?
Are audio signals sent to
the pins (1)(3) of SCAR
T
-1
(SC1451)?
Are audio signals sent to
the pins (122)(121) of
IC1001?
Are audio signals sent to
the pins (1)(3) of SCAR
T
-2
(SC1452)?
Are audio signals sent to
the pins (1)(7) of IC1402?
Are audio L/R signals sent
to the pins (120)(129) of
IC1001?
Check the 2S-MUTE
and SS-MUTES
signals and peripheral
circuits.
Check IC1001 and its
peripheral circuits.
Check IC1001 and its
peripheral circuits.
Check IC1402 and its
peripheral circuits.
Are audio signals sent to
the pins (5)(8) of the EXT
-
3 external terminal J401?
Troubleshooting Table (continued)
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