Canon iR2200 Service Handbook page 249

E240
0000 A fault occurs in communication between the CPU of the main controller
PCB and the CPU of the DC controller PCB.
Main cause The main controller PCB is faulty. The DC controller PCB is faulty.
Action
1. Wiring
Is the wiring from the min controller PCB to the DC controller PCB nor-
mal?
NO:
2. DC controller PCB, Main controlled PCB
Try replacing the DC controller PCB. Is the problem corrected?
YES: End.
NO:
E243
0000 A fault occurs in the communication between the CPU of the control panel
PCB and the CPU of the main controller PCB.
Main cause The control panel CPU PCB is faulty. The main controller PCB is faulty.
Action
1. Wiring
Is the wiring from the main controller PCB to the DC controller PCB nor-
mal?
NO:
2. Control panel CPU PCB, Main controller PCB
Try replacing the control panel CPU PCB. Is the problem corrected?
YES: End.
NO:
Correct the wiring.
Replace the main controller PCB.
Correct the wiring.
Replace the main controller PCB.
CHAPTER 6 SELF DIAGNOSIS
6-17