Read Sharp LC-32SD1E (serv.man8) Service Manual online
LC-26SD1E/RU, LC-32SD1E/RU
6 – 18
<When EXT2 is used for external input> No picture on the display (4)
No EXT2-RGB 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 “EXT2”.
2) Is MENU-PICTURE-CONTRAST/BRIGHTNESS set to “MIN”?
••• Set it to an appropriate level.
3) Check the connection to the external device
••• Connect it correctly as per the operation manual for the device.
Is RGB signal sent to pins (36), (32) and (28) of SCART2
(J1101)?
NO
Check external connection, input setting, SCART2 (J1101) and
peripheral circuits.
peripheral circuits.
YES
Is RGB signal (R2/G2/B2=VIN_15/16/17) sent to Input terminal
pins (178), (177) and (176) of IC3002 (VCT)?
pins (178), (177) and (176) of IC3002 (VCT)?
NO
Check CONNECTOR (SC2703/P1102), SCART2 (J1101) 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 (VCT), and is CLK signal
(LVDS_CN/CP) sent from pins (132) and (131)?
(140) - (129) and (128) of IC3002 (VCT), and is CLK signal
(LVDS_CN/CP) sent from pins (132) and (131)?
NO
Check pins (192), (170) and (133) of BU 3.3V power line and
pins (185), (169) and (142) of BU1.8V power line of IC3002
(VCT), and peripheral circuits.
pins (185), (169) and (142) of BU1.8V power line of IC3002
(VCT), 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)?
(24) and (25) of CONNECTOR CN1 in LCD-CONT-UNIT, and is
CLK signal (LVDS_CN/CP) sent to pins (21) and (22)?
NO
Check CONNECTOR (P2305, CN1) and HARNESS WIRE (LV).
YES
Is power (LCD5V) supplied to pins (2) - (5) of CONNECTOR CN1
in LCD-CONT-UNIT?
in LCD-CONT-UNIT?
NO
Is LCD5V supplied to pins (31) - (28) of CONNECTOR (P2305)?
Check HARNESS WIRE (LV).
Check HARNESS WIRE (LV).
YES
Replace LCD-CONT-UNIT.
Click on the first or last page to see other LC-32SD1E (serv.man8) service manuals if exist.