Sharp LC-37SD1E, Руководство по обслуживанию

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LC-37SA1E/RU
4 – 6
No sound except from speakers (3)
No audio output from EXT1 (SCART) 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 (3) and (1) of EXT1 (J1101)?
YES Check the connection to EXT1 (J1101) and external devices.
NO
Is S-MUTE-LINE [IC1710 (pin 100)] at H?
(Check Q1106/Q1105 operation.)
NO
Is audio signal sent from pins (24) and (23) 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 (24) and (23) of
IC3002 to pins (3) and (1) of EXT1.
No sound except from speakers (3)
No audio output from EXT2 (SCART) 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 (24) and (22) of EXT2 (J1101)?
YES Check the connection to EXT2 (J1101) and external devices.
NO
Is S-MUTE-LINE [IC1710 (pin 100)] or S2-MUTE-LINE [IC3003
(pin26)] at H?
(Check Q1102/Q1101 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.