LC-32SD1EA (serv.man6). Troubleshooting Table - Sharp TV Service Manual (repair manual). Page 4

LC-32SD1EA/RUA, LC-32ST1EA/RUA

5 – 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. 

YES

Is RGB signal (R2/G2/B2=VIN_15/16/17) sent to Input terminal 
pins (178), (177) and (176) of IC3002 (VCT)? 

NO

Check CONNECTOR (SC2703/P1102), SCART2 (J1101) and 
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)? 

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.

YES

Is LVDS signal (LVDS_0N/0P-3N/3P) sent to pins (13) and (12) - 
(25) and (24) of CONNECTOR CN1 in LCD-CONT-UNIT, and is 
CLK signal (LVDS_CN/CP) sent to pins (22) and (21)? 

NO

Check CONNECTOR (P2305, CN1) and HARNESS WIRE (LV).

YES

Is power (LCD5V) supplied to pins (1) - (4) of CONNECTOR CN1 
in LCD-CONT-UNIT?

NO

Is LCD5V supplied to pins (31) - (28) of CONNECTOR (P2305)?
Check HARNESS WIRE (LV).

YES

Replace LCD-CONT-UNIT.