LC-46XL2E (serv.man4). Troubleshooting Table - Sharp TV Service Manual (repair manual). Page 3

LC-42XL2E/S/RU, LC-46XL2E/S/RU, LC-46X20E/S/RU, LC-52XL2E/S/RU, LC-52X20E/S/RU

4 – 3

                                            
Does not the sound go out though the picture has come out when DTV is received?

MAIN UNIT:                          
Is DTV_SPDIF audio signal output from pin (T2) of IC8101 (CPU/
DECODER) to pin (42) of connector SC1101?

NO

Check the line between IC8101 and SC1101, and their peripheral 
circuits.

TERMINAL UNIT:                 

YES

Is DTV_SPDIF audio signal input from pin(42) of connector 
SC501 to pin(4) of IC1404(CODEC)?

NO

Check the line between SC501 and IC1404.
(SC1101/SC501, etc.)

YES

Refer to “No sound output in all modes”.

                                            
Does not the sound of the audio signal input to EXT1(SCART1) go out?
Does not the sound of the audio signal input to EXT2(SCART2) go out?

TEREMINAL UNIT:               
EXT1
Is the audio signal properly sent to pins (6) (IN1_L) and (2) 
(IN1_R) of SCART1(SC502)?

NO

Check the setting of an external input device that connects of 
SC502.

EXT2
Is the audio signal properly sent to pins (6) (IN2_L) and (2) 
(IN2_R) of SCART2(SC503)?

NO

Check the setting of an external input device that connects of 
SC503.

YES

EXT1
Is the audio signal properly sent to pins (51) (IN1_L) and (52) 
(IN1_R) of IC1404(CODEC)?

NO

Check the line between SC502 and IC1404.

EXT2
Is the audio signal properly sent to pins (53) (IN2_L) and (54) 
(IN2_R) of IC1404(CODEC)?

NO

Check the line between SC503 and IC1404.

YES

Refer to “No sound output in all modes”.