Canon FY8-13FW-000DADF-A1 Service Manual page 60

CHAPTER 2 BASIC OPERATION
2. Relationship Between the Belt Motor Drive Signal (BMON), Belt Motor Rotation
Direction Signal (BDIR), and Belt Motor Rotation Speed Control Signal (BMPWM)
and the Feeding Belt
Belt motor drive
signal (BMON) rotation direction
"1"
"1"
"1"
"1"
"0"
3. Protecting the Belt Motor from Overcurrent
At times, overcurrent can occur because of a specific type of original or state of the machine. To
protect the power supply circuit from extra loads occurring because of continuing overcurrent while
the belt is rotating in pick-up direction, an overcurrent control circuit is provided.
2-46
COPYRIGHT © 1998 CANON INC.
Belt motor Belt motor rotation
speed control signal
signal(BDIR) (BMPWM)
"1"
"1"
"0"
"0"
"1" / "0"
Table 2-208
CANON DADF-A1 REV.0 DEC. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
The feeding belt rotates in pick-up
Pulses direction (counterclockwise).
The feeding belt rotates by inertial
"0" in pick-up direction
(counterclockwise).
The feeding belt rotates in copier
Pulses mode delivery direction
(clockwise).
The feeding belt rotates by inertial
"0" in copier mode delivery
direction(clockwise).
"1" / "0" The feeding belt stops.
Feeding Belt