Dc Controller Pcb; Pcb; Controlling The Deck Motor; Controlling The Deck Main Motor (M101) - Canon NP6251 Service Manual

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F. Controlling the Deck Motor

The deck main motor is controlled by the copier's DC controller; Figure 8-110 shows

the circuit used to drive the deck main motor, and the circuit has the following functions:

Turning on and off the deck main motor.

Switching the speed of rotation of the deck main motor.

a. Turning On and Off the Motor

When the deck main motor drive signal (DMON) from the copier goes '1', the motor

drive circuit turns on to rotate the motor at a specific speed. When the deck main motor

drive signal (DMON) goes '0', on the other hand, the motor drive circuit turns off to stop

The copier's DC controller monitors the speed of rotation of the motor in reference

to the deck main motor clock pulse signal (DMFG); if the pulse signal stops for a specific

period (1.4 sec during initial rotation; 2.8 sec during normal copying), the DC controller

will indicate 'E043' on the copier's controller.

Deck main motor drive

command (DOMON)

Deck main motor clock pulse

signal (DMFG)

Figure 8-110

CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 8 PAPER DECK-A1

Deck main motor driver PCB

*Deck main motor high-speed signal (DMHS)

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