KYE Systems Corp. Genius SP700, Руководство по обслуживанию

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c. System down
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d. The volume control is random
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e. Noise and distortion
Problem analysis
Root cause
Countermeasure
Volume control is random
Main board
Defected VR (potentiometer )
Replace VR(VR1/VR2)
Problem analysis
Root cause
Countermeasure
Problem analysis
Root cause
Countermeasure
System down
Cable
Adapter
Replace adapter
Main board
Amplifier
Switch broken
DC Jack broken
The ground lead of power
IC(U2) is failed
Replace switch
Power supply
Replace IC(U2)
Replace DC jack
Noise and distortion
transducer
Defected Transducer
Replace transducer
Main board
PCBA
Defected IC(U2)
Amplifier
Replace PCBA
Replace IC(U2)
Capacitor and
resistor are defective