Operation; 2-Speed Control; Sequence Of Operations - Canon iR2200 Service Manual

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
CPU

2.2.2 Sequence of Operations

Printer unit state
Developing fan
(FM1)
Fixing assembly
(FM2)
Electrical unit fan
(FM3)
Curl reducing fan 1/2
(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.
7-4 P
COPYRIGHT © 2001 CANON INC.
24V
Full speed
signal
Voltage
Half speed
switching
signal
circuit
F07-202-01
Main power switch ON
Control panel switch ON
Initial multiple rotation
Warm-up Standby Printing
F07-202-02
2000 2000 2000 2000
12V
24V or 12V
Clock signal
Low-power
Jam
Print end
+1
CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001
Fan
Control panel
switch OFF
Door open