Canon IR3300, IR2800, IR2200 1 2-Speed Control, Sequence of Operations, F07-202-01, F07-202-02

CHAPTER 7 EXTERNALS AND CONTROLS

2.2 Operation

2.2.1 2-Speed Control

Some of the machine’s fans are controlled for two speeds (F07-202-01); the voltage switching PCB of each fan changes its output voltage to switch between speeds.

DC controller PCB		24V	12V
	Full speed			24V or 12V
	signal	Voltage
CPU	Half speed			Clock signal
		switching
	signal	circuit
					Fan
		F07-202-01
2.2.2 Sequence of Operations
	Main power switch ON
	Control panel switch ON				Control panel
	Initial multiple rotation			Low-power
					switch OFF
Printer unit state	Warm-up	Standby Printing Print end		Jam	Door open
Developing fan
(FM1)
Fixing assembly
(FM2)
Electrical unit fan
(FM3)
Curl reducing fan 1/2			+1
(FM4/FM5)

: full speed.

: half speed or at rest; if the polygon mirror motor (M10) is ON, half speed; if OFF, at rest.

*1: Rotates for 30 sec after the leading edge sensor goes ON during printing; if the sensor goes ON for a second time during the 30-sec period, rotates for another 30 sec.

F07-202-02

7-4 P COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001