C. Stopping the Hopper Motor in Response to a Rotation Error
If an excess load is imposed on the hopper motor (M4) and, as a result, variation
occurs in its rotation, the level of current entering the comparator circuit lowers and the
comparator circuit generates a negative voltage, causing the transistors Tr
1
and Tr
2
to
turn off and stopping the hopper motor.
Since the developing assembly will not be supplied with toner while an error exists
in the motor, the “Add Toner indicator” will be indicated.
Figure 4-203
4-24
CHAPTER 4 IMAGE FORMATION SYSTEM
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
-5B
-11
HMD
*
J106
J202
-8
-7
J206
DC
controller
PCB
±5V
±24VB
±5V
Hopper motor
M4
Comparator
Motor driver 1 PCB
Tr
2
Tr
1
Содержание NP6330
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