Pioneer CDJ-900 Service Manual page 52

1
A
Output waveforms of the alarm port
Defective Point
Defective
MAIN CPU/FLASH
ROM
B Pulse ×1
Defective DSP
Pulse ×2
C
Defective
ETHER AHY CHIP
Pulse ×3
D
USB_B
CONTROLLER
Pulse ×4
E
F
52
1
2
Waveform
0.5 s
2.5 s
0.5 s
2.5 s
0.5 s
0.5 s
2.5 s
0.5 s
0.5 s
2.5 s
0.5 s
2
3
Defective Point
Communication
failure with the
PANEL CPU
Pulse ×5
Communication
failure with the
GUI CPU
Pulse ×6
ATA
communication
failure with the
SODC
Pulse ×7
Normal operation
CDJ-900
3
4
Waveform
0.5 s
2.5 s
0.5 s
0.5 s
2.5 s
0.5 s
0.5 s
0.5 s
2 s
4