Sharp LC-32P50E Service Manual page 40

LC-26P50E
LC-32P50E
LC-37P50E
TROUBLE SHOOTING TABLE
When EXT3 is used for external input>
XT3 in trouble.
Confirmation of the settings:
1) Is "INPUT SOURC " button
2) Is M NU-PICTUR -CONTRAST/BRIGHTN SS set to "MIN"?áááSet it to an appropriate level.
3) Check the connection to the external deviceáááConnect it correctly as per the operation manual for the device.
Is composite video Check external
signal sent to pin connection, input
NO
(5) of A/V-IN- setting, A/V-IN-
T RMINAL T RMINAL (J1202)
(J1202)? and peripheral
circuits.
YES
Check A/V-IN-
Is the composite
T RMINAL
video signal (IN3-
NO
(J1202) and
V) sent to input
peripheral circuits.
terminal pin (3) of
IC1203 (V-
S L CTOR)?
YES
Is the composite
Check IC1203 (V-
video signal
S L CTOR) and
NO
(CVBS) sent from
peripheral circuits.
output terminal pin
(51) of IC1203 (V-
S L CTOR)?
YES
Is the composite Check IC3300 (V-
video signal PROC SSOR),
NO
(CVBS1) sent to Q3706/Q3707 and
input terminal pin peripheral circuits.
(242) of IC3300 (V-
PROC SSOR)?
YES
Is LVDS signal (TA± - TD±) sent from pins (36) and (37) - (26) and (27) of IC3300 (V-PROC SSOR), and is CLK signal
(RCLK1±) sent from pin (28)/(29)?
Is the digital signal (RMS/GMS/BMS) sent from pins (27) and (34) - (47) and (50) of IC4601 (LVDS-R C IV R), and is SYNC
signal (HS/VS) sent from pin (3)/(5)?
Is digital RGB-right signal (RR**/RG**/RB**) sent from pins (203) and (2) - (16) and (23) of IC4502 (LCD-CONTROL), and is
digital RGB-left signal (LR**/LG**/LB**) sent from pins (26) and (33)- (47) and (54)?
Is digital RGB signal sent to pins (14) and (21) - (42) and (49) of LCD-CONN CTOR SC4651/4652?
No picture (5)
XT3-COMPON NT (Y, Pb and Pr) in
trouble.
on the remote control set up correctly?áááSee the operation manual and set "INPUT SOURC " to " XT1".
Is IN3-Y signal sent
to pin (6) of A/V-IN-
T RMINAL (J1201),
and is Cb/C/r signal
sent to pins (4) and
(6) of A/V-IN-
T RMINAL (J1201)?
YES
Is component signal
(IN3-Y/Cb/Cr) sent to
input terminal pins
(33), (35) and (37) of
IC1203 (V-
S L CTOR)?
YES
Are component signals
(Y, Cb and Cr) sent
from output terminal
pins (60), (59) and (58)
of IC1203 (V-
S L CTOR)?
YES
Are component
signals (Y, Cb and
Cr) sent to input
terminal pins (246),
(232) and (225) of
IC3300 (V-
PROC SSOR)?
YES
YES
YES
YES
YES
Check the LCD panel.
(Continued)
XT3-Y/C in trouble.
Check external Is Y/C signal sent
connection, input to pins (3) and (4)
NO
setting, A/V-IN- of S-T RMINAL
T RMINAL (J1200)?
(J1201/1202) and
peripheral circuits.
Check A/V-IN- Is Y/C signal (IN3-
T RMINAL Y/C) sent to input
NO
(J1201/1202) and terminal pins (5)
peripheral circuits. and (7) of IC1203
(V-S L CTOR)?
Is Y/C signal (Y/C-
Check IC1203 (V-
SIG) sent from output
S L CTOR) and
NO
terminal pins (52)
peripheral circuits.
and (50) of IC1203
(V-S L CTOR)?
Check IC3300 (V- Is Y/C signal
PROC SSOR), (CVBS2/C-SIG1)
NO
Q3700 Ð Q3705 sent to input
and peripheral terminal pins (244)
circuits. and (231) of
IC3300 (V-
PROC SSOR)?
42
Check external
connection, input
NO
setting, S-
T RMINAL
(J1200) and
YES
peripheral circuits.
Check S-
T RMINAL
NO
(J1200) and
peripheral circuits.
YES
Check IC1203 (V-
S L CTOR) and
NO
peripheral circuits.
YES
Check IC3300 (V-
PROC SSOR),
NO
Q3708/Q3709 and
peripheral circuits.
YES
Check IC3300, pins
NO
(28) and (29) for
RCLK signal, and
peripheral circuits.
Check IC4601, pins
NO
(3) and (5) for
HS/VS signal, and
peripheral circuits.
Check IC4502 and
NO
peripheral circuits.
Check IC4502,
NO
LCD-
CONN CTOR,
SC4651/4652 and
peripheral circuits.