Akai AS-R8025SSP, Service Manual

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FAMILIAR MALFUNCTION ANALYSIS OF AFTER-SERVICE
Malfunction 1:
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Suggest
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1) Check if power plug is well connected to power.
2) Check if switch is set in "ON"
3) Fuse was melted. (Need checked by professional and replacing)
Malfunction 2:
Pehenomenon: Subwoofer no sound
Suggest resolvent:
1) Check if turned up "master volume", subwoofer "volume"
2) Check if have set to "2.1 input"
3) Check if have input signal that under 200Hz frequency
Malfunction 3:
Pehenomenon: Whole system no sound
Suggest resolvent:
1) Check if input audio frequency cable is well connected.
2) Check if output audio frenquency equipment are working
Malfunction 4:
Pehenomenon: 5.1 Channel output no sound
Suggest resolvent:
1) Check if input cable is well connected to 5.1 channel input RCA
2) Check if "mode" have set to 5.1
Malfunction 5:
Pehenomenon: resonance while power on
Suggest resolvent:
1) Need checked & repaired by professional.
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