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LC-46D65E (serv.man5). Troubleshooting Table - Sharp TV Service Manual (repair manual). Page 2

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LC-46D65E/RU
4 – 2
No sound (during the reception of TV (DIGITAL) broadcasting) (1) 
                                            
Does not the sound go out though the picture has come out when DTV is received?
Is DTV_I2S signal output from pin (F4/DTV_SCK), (F5/DTV_WS) 
and (F3/DTV_SDO) of IC8101 (DIGITAL AV DECODER & MAIN 
CPU & VIDEO PROCESSER)?
NO
Check IC8101 and its peripheral circuits.
YES
Is DIG_I2S signal input to pin (82/DTV_SCK), (83/DTV_WS) and 
(84/DTV_SDO) of IC1302 (DSP)?
NO
Check the line between IC8101 and IC1302.
YES
Refer to “No sound output in all modes”.
No sound from external input devices (1)
                                            
Does not the sound of the audio signal input to EXT1/EXT2 go out?
Is there a audio input signal in pins (6/IN1L) and (2/IN1R) of 
EXT1 (SC502)?
NO
Check the setting of an external input device that connects with 
EXT1.
Is there a audio input signal in pins (6/IN2L) and (2/IN2R) of 
EXT2 (SC501)?
NO
Check the setting of an external input device that connects with 
EXT2.
YES
EXT1
Is the audio signal input to pins (9/AIN1_L) and (10/AIN1_R) of 
IC1302 (DSP)?
NO
Check the line between SC502 and IC1302.
EXT2
Is the audio signal input to pins (13/AIN2_L) and (14/AIN2_R) of 
IC1302 (DSP)?
NO
Check the line between SC501 and IC1302.
YES
Refer to “No sound output in all modes”.
No sound from external input devices (2)
                                            
Does not the sound of the audio signal input to EXT3 go out?
Is there a audio input signal in pins (2/IN4L) and (4/IN4R) of 
EXT3 (J502)?
NO
Check the setting of an external input device that connects with 
EXT3.
YES
Is the audio signal input to pins (99/AIN4_L) and (100/AIN4_R) of 
IC1302 (DSP)?
NO
Check the line between J502 and IC1302.
YES
Refer to “No sound output in all modes”.
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