Read Sharp LC-32P50E (serv.man9) Service Manual online
LC-26P50E
LC-32P50E
LC-37P50E
LC-32P50E
LC-37P50E
37
TROUBLE SHOOTING TABLE
(Continued)
No sound (4) (from external input devices)
No external audio input
signal which is sent
from SCART1
No external audio input
signal which is sent from
SCART2
No external audio input
signal which is sent from
EXT3
No external audio input signal
which is sent from EXT4
(HDMI-ANALOG AUDIO)
No external audio input signal
which is sent from EXT4
(HDMI-DIGITAL AUDIO)
YES
<EXT1>
Is IN1-L audio signal sent from
pin (6) of SCART terminal (SC
1201) to pin (56) of IC2501
(MSP)?
Is IN1-R audio signal sent from
pin (2) of SCART terminal (SC
1201) to pin (57) of IC2501?
<EXT2>
Is IN2-L audio signal sent from
pin (6) of SCART terminal (SC
1200) to pin (53) of IC2501
(MSP)?
Is IN2-R audio signal sent from
pin (2) of SCART terminal (SC
1200) to pin (54) of IC2501?
<EXT3>
Is IN3-L audio signal sent
from pin (3) of J1202 terminal
to pin (50) of IC2501?
Is IN3-R audio signal sent
from pin (5) of J1201 terminal
to pin (51) of IC2501?
Is audio signal properly
sent from pins (28) and
(27) of IC2501?
Check IC2501 or
peripheral circuits.
Is audio signal properly
sent to pins (7) and (1) of
IC2504 (OP-AMP)?
Check IC2504 or
peripheral circuits.
<EXT4>
Is HDMI-L audio signal
sent from J1900 to pin
(3) of IC1906?
Is HDMI-R audio signal
sent from J1900 to pin
(7) of IC1906?
Is HDMI-L audio signal
sent to pin (47) of
IC2501?
Is HDMI-R audio signal
sent to pin (48) of
IC2501?
<EXT4>
Is HDMI-L audio signal
sent to pin (1) of
IC1906?
Is HDMI-R audio signal
sent to pin (6) of
IC1906?
Check the
connection to pins
(6) and (2) of
SCART1 and to
external devices.
Check the
connection to pins
(6) and (2) of
SCART2 and to
external devices.
Check the
connection to pins
(3) and (5) of EXT3
(J1202 and J1201
respectively); and to
external devices.
Check output of pins
(15) and (11) of
IC1906, or
peripheral circuit.
Check output of pins
(11) and (10) of
IC1905, and check
IC1904 (HDMI-
RECEIVER), HDMI
terminal (SC1900).
Is audio output signal of
pin (4) of IC3901/IC3900
(MAIN-AMP) normal?
Check IC3901/IC3900
(MAIN-AMP) or
peripheral circuits.
Check the connector
P3900 and right and left
SP-BOX.
YES
YES
NO
NO
NO
YES
YES
YES
NO
YES
NO
YES
YES
NO
NO
NO
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