Canon iR2200 Service Handbook page 245

E100
0001 The BD signal is not detected 10 times or more within 10 msec in 5 msec
after the generation of the laser drive signal.
0002 While the laser is ON, the BD signal cycle is outside a specific range 20
times or more continuously.
0003 While the laser is ON, the horizontal sync signal cycle is outside a specific
range 20 times or more.
Main cause The wiring is faulty (short circuit, open circuit). The BD PCB is faulty. The
laser scanner unit is faulty. The DC controller PCB is faulty.
Action
1. BD PCB
Try replacing the BD PCB. Is the problem corrected?
YES: End.
2. Laser scanner unit, DC controller PCB
Try replacing the laser scanner unit. Is the problem corrected?
YES: End.
NO: Replace the DC controller PCB.
CHAPTER 6 SELF DIAGNOSIS
6-13