CHAPTER 2 BASIC OPERATION
COPYRIGHT © 1999 CANON INC. CANON FINISHER-E1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2-58
VIII.
POWER SUPPLY
1.
Outline
When the copier is turned on, it supplies the finisher controller PCB with two channels of 24
VDC: one is for driving the motors, and the other is used by the regulator IC (Q8) on the finisher
controller PCB to generate 5 VDC for sensors and ICs on PCB.
The 24 VDC power used to drive the staple motor is cut when the stapler safety switch (S14)
opens.
Figure 2-801 is a block diagram showing the distribution of power.
Figure 2-801
2.
Protection Mechanism
The finisher is equipped with a circuit breaker (CB1) designed to protect against overcurrent,
cutting off 24 VDC to the motor.
Copier
Circuit
breaker
Regulator
IC (Q8)
Staple unit
drive circuit
Logic
Stapler motor
Sensor
Motor
Staple safety
switch S14
Finisher controller PCB
24VP
24VL
CB1
5V
24V
N.O.
M
M6
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