Canon GP405 Service Manual page 249

b. Switching the Motor Rotating Speed
The deck is designed to switch its pick-up/feeding speed automatically to accommodate future
copier models. The switching mechanism is triggered in response to and based on the combination
of the states of the speed switch signals (DBIT0, DBIT1) sent by the copier's DC-CPU to the side
deck driver PCB.
The combinations of the states of these signals are as shown in Table 8-102; and in the case of
the GP40, the motor is made to rotate at medium speed.
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Motor speed
High speed
Medium speed
Low speed
Table 8-102
CHAPTER 8 PAPER DECK
Speed switch signal
DBIT 0 DBIT 1
L L
H L
L H
8-15