LC-32SA1E (serv.man2) — Sharp TV Service Manual (repair manual). Page 41

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     LC-26SA1E/RU, LC-32SA1E/RU
6 – 7
No sound except from speakers (3)
                                            
No audio output from AUDIO OUTPUT terminal.
                                            
Checklist: 
1) Is the MUTE button on the remote control set to ON? 
••• Set to OFF.
2) Check the connection to external devices. 
••• Is there any improper connection?
                                            
Is audio signal sent to pins (13) and (15) [L/R (white) (red)] of 
AUDIO OUTPUT terminal (J1201)?
YES
Check the connection to AUDIO OUTPUT terminal (J1201) and 
external devices.
                                            
NO
Is S-MUTE-LINE [IC1710 (pin 100)] at H?
(Check Q1204/Q1203 operation.) 
                                            
NO
Is audio signal sent from pins (22) and (21) of IC3002?
NO
Check the power supply 8/5 V pins (18) and (33) of IC3002 and 
peripheral circuits.
YES
Check the audio signal output line from pins (22) and (21) of 
IC3002 to Q1103/Q1104/Q1201/Q1202.
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