LC-52XL1E (serv.man3). Adjustment Procedure - Sharp TV Service Manual (repair manual). Page 9

LC-46XL1E/RU, LC-52XL1E/RU

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SCART1:
No picture appears on EXT1 -connected monitor during the tuner (U/V) 
reception.

SCART2:
No picture from EXT1 appears on EXT2-connected monitor.

NOTE: Normally, if the screen during display is sent to EXT2, no pic-

ture is sent to EXT2.

             

             

Checklist:

1) Are input terminal on back of TV and “INPUT SOURCE” button

on the remote control set up correctly? ... See the operation manual and 

set “INPUT SOURCE” appropriately.

2) Is the Signal Type (item) in MENU-Connection-Input-Select set to the same as that of the external device? ... Set it to “CVBS”, “Y/C” or “RGB”.
3) Is ANT-CABLE disconnected or connected improperly? ... Connect it correctly as per the operation manual.
4) The picture is sent to the monitor in a CVBS signal if the source during display is TV, CVBS or Y/C of EXT1-3. When sent by component, etc., 

that signal is not sent to the monitor.

5) When the monitor picture is not sent and is not displayed on the monitor, refer to “No picture” for each terminal.
6) The video output from EXT1 is not the monitor output (output of the picture now watching). The picture of the last selected TV channel is always 

sent to EXT1. (Specification).

             

             

Is video signal sent to 
pin (19) of SCART1 
(J1101)?   

YES

Check SCART1, external 
connection or input setting.   

Is video signal sent to 
pin (40) of SCART2 
(J1101)? 

YES

Check SCART2, external 
connection or input setting.

NO

NO

Is video signal (V-
OUT1) sent from pin (2) 
of IC1102 (SW)? 

YES

Check SCART1 (J1101) and
peripheral circuits.    

Is video signal (V-
OUT2) sent from pin (2) 
of IC1101 (SW)?

YES

Check SCART2 (J1101) and 
peripheral circuits.   

NO

NO

Is video signal (V-
OUT1) sent from pin 
(Y23) of IC3002 (V-
PRO.)?   

YES

Check IC1102 (SW), 
Connector (P1101, SC2702) 
and peripheral circuits.   

Is video signal (V-
OUT2) sent from pin 
(Y20) of IC3002 (V-
PRO.)? 

YES

Check IC1101 (SW), 
Connector (P1102, SC2703) 
and peripheral circuits.    

NO

NO

Is video signal (CVBS) 
sent to pin (AC23) of 
lC3002 (V-PRO.)?   

YES

Check power supply of 
IC3002 (V-PRO.) and periph-
eral circuits.   

Is video signal (VIN1) 
from EXT1 sent to pin 
(AB22) of IC3002 (V-
PRO.)?

YES

Check power supply of 
IC3002 (V-PRO.) and periph-
eral circuits.    

NO

NO

Is video signal (IF) sent 
from pin (11) of tuner 
(TU201)?   

YES

Check CONNECTOR (P201, 
SC2705) and peripheral cir-
cuits. 

Check whether video 
signal is sent to pin (20) 
of SCART1.
   

YES

Check SCART1, CONNEC-
TOR (SC2702, P1101) and 
peripheral circuits.    

NO

NO

Check 5/33 V power 
supply pins (10) and (7), 
I2C line pins (9) and (8) 
of tuner (TU201) and 
peripheral circuits.   

Check SCART1, exter-
nal connection or input 
setting.