6-6
AN-1605
Is there Power Supply at AN Board?
Check ±12V at CN1802 (Pin1:+12V,
Pin2:-12V)
AN-1605
Is there Audio signal out at AN Board?
Check Audio-L/R Channel
(R1894 & R1895: 1.2mV when playback
1 kHz audio source)
MB-1601
Is there AK4452 Reset Signal from
IC1401 (Pin57)?
Check SW3.3V(CL1007)
Replace new MB-1601
MB-1601
Is there Audio signal out at IC101?
Check Audio-L/R Channel
(Audio-L: CL1006/ Audio-R: CL1005:
1.5±0.5Vrms)
Replace new MB-1601
Replace new AN-1605
Return to Power Supply
Flowchart
No
6-8*. Audio (Analog) Section Flowchart (For UBP-X1000ES model only)
No
No
No
Yes
Yes
Yes
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