Read Sharp LC-37GA9EK (serv.man8) Service Manual online
41
LC-26GA5E
LC-32GA5E
LC-32GA9E/LC-32BV9E
LC-37GA9E/LC-37BV9E
Troubleshooting Table (continued)
37
LC-32/37GA9E
LC-32/37BV9E
TROUBLESHOOTING TABLE
(Continued)
NO
NO
NO
YES
YES
Is "EXT4" selected with
button on the remote control?
button on the remote control?
Select "EXT4" with button
on the remote control.
on the remote control.
YES
Is D-SUB-COMPONENT signal
(PCV_R/G/B) sent to pins (1),
(2) and (3) of EXT4-TERMINAL
(SC2303)?
(PCV_R/G/B) sent to pins (1),
(2) and (3) of EXT4-TERMINAL
(SC2303)?
Check D-SUB-adaptor and
external connection.
external connection.
Is D-SUB-COMPONENT signal
(PCV_R/G/B=VIN19/20/21))
sent to pins (174), (173) and
(172) of IC3002 (VCT)?
(PCV_R/G/B=VIN19/20/21))
sent to pins (174), (173) and
(172) of IC3002 (VCT)?
Check EXT4-TERMINAL and
peripheral circuits.
peripheral circuits.
YES
Is LVDS signal (LVDS_0N/0P-3N/3P) sent from pins (141) and (140) - (129) and (128) of IC3002 (VCTP), and is
CLK signal (LVDS_CN/CP) sent from pins (132) and (131)?
CLK signal (LVDS_CN/CP) sent from pins (132) and (131)?
NO
Check pins (192), (170) and
(133) of BU3.3V power line and
pins (185), (169) and (142) of
1.8V power line of IC3002
(VCTP), and peripheral circuits.
(133) of BU3.3V power line and
pins (185), (169) and (142) of
1.8V power line of IC3002
(VCTP), and peripheral circuits.
YES
Is LVDS signal (LVDS_0N/0P-3N/3P) sent to pins (12) and (13) - (24) and (25) of CONNECTOR CN1 in LCD-
CONT-UNIT, and is CLK signal (LVDS_CN/CP) sent to pins (21) and (22)?
CONT-UNIT, and is CLK signal (LVDS_CN/CP) sent to pins (21) and (22)?
NO
Check CONNECTOR (P2305,
CN1) and Hareness Wire (LV).
CN1) and Hareness Wire (LV).
YES
Is power (LCD5V) supplied to pins (2) – (5) of CONNECTOR CN1 in LCD-CONT-UNIT?
NO
Is LCD5V supplied to pins (31)
– (28) of CONNECTOR
(P2305)?
Check Hareness Wire (LV).
– (28) of CONNECTOR
(P2305)?
Check Hareness Wire (LV).
YES
Replace LCD-CONT-UNIT.
<When EXT4 is used for external input>
No EXT4 (15pin-D-SUB-terminal)
output of the external input system.
output of the external input system.
Checklist:
1) Is "INPUT SOURCE" button on the remote control set up correctly? ··· See the operation manual and set "INPUT SOURCE" to "EXT4".
2) Connect the included D-SUB-Adapter-Cable to the COMPONENT terminal of an external device. ··· See the operation manual (use a commercially
available Component-Cable to connect to the external device).
3) Is ANT-CABLE disconnected or connected improperly? ··· Connect it correctly as per the operation manual.
1) Is "INPUT SOURCE" button on the remote control set up correctly? ··· See the operation manual and set "INPUT SOURCE" to "EXT4".
2) Connect the included D-SUB-Adapter-Cable to the COMPONENT terminal of an external device. ··· See the operation manual (use a commercially
available Component-Cable to connect to the external device).
3) Is ANT-CABLE disconnected or connected improperly? ··· Connect it correctly as per the operation manual.
No picture on the display (6)
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