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m pin (6) of SCART1
from pin (27) of SCART2
minal (J1101) to pin
terminal (J1101) to pin
) of IC3002 (VCT)?
(12) of IC3002 (VCT)?
Is IN2-R audio signal sent
N1-R audio signal sent
from pin (23) of SCART2
m pin (2) of SCART1
terminal (J1101) to pin
minal (J1101) to pin
) of IC3002 (VCT)?
(11) of IC3002 (VCT)?
Troubleshooting Table (continued)
YES
NO
YES
Check pins (6) and
Check pins (27) and
(2) of SCART1 and
(23) of SCART2 and
connection to an
connection to an
external input
external input
device.
device.
DIGITAL UNIT:
Is audio signal fed to pins (5) and (10) of IC4604 (OP-AMP)?
Is audio signal sent from pins (7) and (8) of IC4604(OP-AMP)?
MAIN UNIT:
Is audio signal sent to pin (3) and (13) of IC2704 (SW)?
Is the audio signal
properly sent from pins
(28) and (27) of IC3002?
Is the audio signal of
pins (1) and (7) of IC303
(OP-AMP) sent properly?
Is the audio output
signal of pins (13) and
(16) of IC302/IC301
(MAIN-AMP) normal?
Check CONNECTOR
(P301) and Speaker
(right and left).
sent from pin (3) of
J1201 terminal to pin
(16) of IC3002?
Is IN3-R audio signal
sent from pin (5) of
J1201 terminal to pin
(15) of IC3002?
NO
YES
NO
Check pins 3
(J1201) and 5
(J1201) of EXT3
No audio output during DTV reception. Sound is low.
and connection to
an external input
device.
YES
YES
YES
NO
Check IC3002 or
peripheral circuits.
YES
NO
Check IC303 or
peripheral circuits.
YES
Check IC302/IC301
NO
(MAIN-AMP),
HEADPHONE and
peripheral circuits.
YES
28
sent from J2702 to pin
(15) of IC2704?
Is D-SUB-R audio signal
sent from J2702 to pin
(2) of IC2704?
YES
Is D-SUB-L audio signal
sent to pin (10) of
YES
IC3002?
Is D-SUB-R audio signal
sent to pin (9) of
NO
IC3002?
Check R4002(AD2pin) and IC4001(D-Processor).
YES
NO
Check power supply of IC4604(OP-AMP) and its peripheral circuits.
NO
Check power supply and pins (9) and (10)of IC2704(SW) and
Check that Option-
OK
audio signal input of pins (4) and (11) of IC2704.
HDMI Setup-Audio
select is set to
"Analog".
31
47
sent from J2701 to pin
(14) of IC2704?
LC-26GA5E
Is HDMI-R audio signal
LC-32GD9E
sent from J2701 to pin
LC-32GA5E
LC-37GD9E
(5) of IC2704?
YES
Is HDMI-L audio
signal sent to pin
(10) of IC3002?
Is HDMI-R audio
signal sent to pin (9)
of IC3002?
NO
Check output of pins
(13) and (3) of
IC2704 and
peripheral circuits.
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