LC-32SD1E (serv.man8). Troubleshooting Table - Sharp TV Service Manual (repair manual). Page 3

LC-26SD1E/RU, LC-32SD1E/RU

6 – 3

                                             
No sound from an external input device connected to EXT1 
(SCART1).

                                             
<EXT1>
Is IN1-L audio signal sent from pin (6) of SCART1 terminal 
(J1101) to pin (14) of IC3002 (VCT)?
Is IN1-R audio signal sent from pin (2) of SCART1 terminal 
(J1101) to pin (13) of IC3002 (VCT)?

NO

Check pins (6) and (2) of SCART1 and connection to an external 
input device.

YES

Is the audio signal properly sent from pins (28) and (27) of 
IC3002?

NO

Check IC3002 or peripheral circuits.

YES

Is the audio signal of pins (1) and (7) of IC303 (OP-AMP) sent 
properly?

NO

Check IC303 or peripheral circuits.

YES

Is the audio output signal of pins (13) and (16) of IC302/IC301 
(MAIN-AMP) normal?

NO

Check IC302/IC301 (MAIN-AMP), HEADPHONE and peripheral 
circuits.

YES

Check CONNECTOR (P301) and Speaker (right and left).

                                             
No sound from an external   input device connected to EXT2 
(SCART2). 

                                             
<EXT2>
Is IN2-L audio signal sent from pin (27) of SCART2 terminal 
(J1101) to pin (12) of IC3002 (VCT)?
Is IN2-R audio signal sent from pin (23) of SCART2 terminal 
(J1101) to pin (11) of IC3002 (VCT)?

NO

Check pins (27) and (23) of SCART2 and connection to an 
external input device.

YES

Is the audio signal properly sent from pins (28) and (27) of 
IC3002?

NO

Check IC3002 or peripheral circuits.

YES

Is the audio signal of pins (1) and (7) of IC303 (OP-AMP) sent 
properly?

NO

Check IC303 or peripheral circuits.

YES

Is the audio output signal of pins (13) and (16) of IC302/IC301 
(MAIN-AMP) normal?

NO

Check IC302/IC301 (MAIN-AMP), HEADPHONE and peripheral 
circuits.

YES

Check CONNECTOR (P301) and Speaker (right and left).