Controlling The Speed Of The Fans; Sequence Of Operation - Canon iR6570 series Service Manual

FM4

10.3.2 Controlling the Speed of the Fans

Some of the fans mounted in the machine are controlled to 2 different speeds, switched over by the voltage switchover circuit of individual fans.

10.3.3 Sequence of Operation

FM501
FM1
FM3
DC controller PCB
Full speed
signal
CPU
Half speed
signal
FM9
FM6
FM7
F-10-2
24V 12V
24V or 12V
Voltage
Lock signal
switchover
circuit
F-10-3
FM2
FM5
FM8
Fan
Chapter 10
0007-7406
0009-2577
10-5