Canon IR2200, IR3300, IR2800 manual DC power is absent, 3VB

CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS

4.1.2 The DC power is absent.

1. AC power supply

Is the rated AC voltage present at the connector J6 (between 1 and 3) of the main controller PCB and at the connector J100 (between 1 and 3) of the composite power supply PCB?

NO: See “The AC power is absent.”

2. Fuse (F1)

Is the fuse on the composite power supply PCB blown ? YES: Remove the cause of the fuse, and replace the fuse.

3. Main power supply PCB, Composite power supply PCB

Is the output voltage of each power supply PCB normal?

a. Main Power Supply PCB		b. Composite Power Supply
Connector	Output voltage	Connector	Output voltage
J202-1, 3, 5	24VU1-SW	J120-1, 4	5V
J203-2	24VU2	J121-1, 2, 3	3VA2
J204-1, 3, 7, 8, 9	24VU3	J121-4, 5	3VA1
J206-2	24VU3	J121-11,12,13	3VB
J206-3	5V	J122-1, 2	5V
		J124-3, 4	3VA1
		J124-6	3VB
		J124-9, 10	5V
		J126-2, 3, 5, 7	13V

YES: Check the wiring from each power supply PCB to each load.

NO: Replace the faulty power supply PCB.

COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001 4-29 T