Operations; Speed Rotation Control; Sequence Of Operations - Canon CLC 1120 Service Manual

CHAPTER 9 EXTERNALS / AUXILIARY MECHANISMS
B. Operations

1. 2-Speed Rotation Control

The rotation of some of the fans used in the copier is controlled so that they operate at full speed
(24 V) or half speed (15 V) in response to a switch of voltage by the voltage switching circuit of the
respective fan. (Table 9-401)
If an error occurs in the rotation of a fan, the copier indicates 'E804' on the control panel. To
reset the copier, remove the cause, and turn on the power switch. (Table 9-401)
R-CPU or
DC-CPU
CPU PCB

2. Sequence of Operations

Laser scanner motor cooling fan
(FM4)
Power supply cooling fan 1/2
(FM9/FM13)
Delivery cooling fan (FM11)*1
Delivery cooling fan (FM11)*2
Original exposure system cooling
fan 1/2/3 (FM1/FM14/FM15)
Exhaust fan (FM2)
IP cooling fan (FM7)
Electric unit cooling fan (FM8)
Primary charging assembly fan
(FM3)
Ozone suction fan (FM5)
Toner suction fan (FM6)
Back suction fan (FM16)
Power supply cord mount fan (FM17)
*1: For plain paper or special paper 1 mode; in sync with the fixing motor.
*2: For transparency film or special paper 2 mode.
9-6
COPYRIGHT © 1999 CANON INC.
24V
Full speed
signal
Voltage
switching circuit
Half speed
signal
Figure 9-402
Power switch
ON
WMUP AINTR STBY
2 sec 4 min
Figure 9-403
15V
Copy Start key
ON
DSRDY CNTR
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
24V/15V
Error signal
Fan
COPY STBY
2 sec
30 sec
4 min
: full speed.
: half speed.
Power switch
OFF