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TROUBLE SHOOTING
C: NO SOUND
YES
Check power amplifier DD1 if with
30V voltage is normal or not
YES
Check IC202：24st feet of CE2631
is with 3.3V power supply or not
YES
Check IC203：24pin and 42pin feet
of CS48540 is with 3.3V and 1.8V
power supply or not
YES
Measurement of IC30,IC302
integrated circuit pin: 20 pin,
29 pin, 34 pin, the 3.3V power
supply or not
YES
Check IC301,IC302 integrated
circuit Pinout: 30 pin, 31 pin,
32 pin I2C waveform of normal or
not
YES
Audio output ok
D: NO DISC
YES
Measurement of the IC601 power
supply 3.3V and 1.8V voltage, and
the IC602 power supply5V voltage
is normal or not
NO
Refer to A maintenance method
Check power supply circuit:
NO
L19,L29 .component
NO
Check power supply circuit:
L6,L10,L203 .component
NO
Check power supply circuit:
L7,L46,L52,L30,IC2.component
NO
Check I2C circuit:
IC203,IC301,IC302,R32,R40,R42
etc component
Check D308，FB100,FB103,IC301，
NO
IC302，D3，Q310，Q311 etc.
components
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