Canon IR2200, IR3300, IR2800 manual Close the Front Cover message fails to go OFF, 38 T

CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS

4.4.4 The “Close the Front Cover” message fails to go OFF.

1. Connectors

Is the wiring between the PCBs secure?

[1]between composite power supply PCB (J136A) and DC controller PCB (J301A)

(24V detection signal: between J136A-3 and J301A-10)

[2]between composite power supply PCB (J135) and main power supply PCB (J202)

(J135-1: 24VU1-SW, J135-2: 0VU1, J202-5: 24VU1-SW, J202-6: 0VU1) NO: Make the wiring secure.

2.Front cover switch

Is there electrical continuity in the front cover switch when the front cover is closed?

(check the interval between J200-1 and J200-3 on the main power supply PCB for electrical continuity.)

NO: Replace the front cover switch.

3. Main power supply PCB

Is 24 V supplied by the main power supply PCB to the composite power supply PCB?

•Main power supply PCB (J202-5: 24VU1-SW, J202-6: 0VU1)

•Composite power supply PCB (J135-1: 24VU1-SW, J135-2: 0VU1) NO: Replace the main power supply PCB.

4.Composite power supply PCB, DC controller PCB

When 24 V is supplied by the main power supply PCB to the composite power supply, is the front cover detection signal (FDOOR_OPN) sent by the composite power supply PCB to the DC controller PCB?

•Composite power supply PCB (J136A-3)

•DC controller PCB (J301A-10)

YES: Replace the DC controller PCB.

NO: Replace the composite power supply PCB.

4-38 T COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001