Canon PC300 Service Manual page 40

3. Mechanism of Copyboard Drive
Assembly
The forward gear and reverse gear are
rotating in the direction of the arrow (Figure
3-12) while the main motor (M1) is operat-
ing
The forward/reverse switching mecha-
nism engages with either the forward gear or
the reverse gear depending on the orienta-
tion of the copyboard position sensor lever
and the states (ON/OFF) of the copyboard
drive solenoid (SL2) operated by the start
position cam or reversal cam; when not
engaged, the mechanism is said to be free,
and the copyboard can be moved by hand.
Forward/Reverse switching mechanism
Reverse
Reversing cam Copyboard drive
solenoid (SL2)
PERATIONS AND TIMIN
The above mechanism is used to move
the copyboard forward and reverse or to
stop it.
Copyboard (rack)
a
Forward
Start position cam
Copyboard position lever
Figure 3-12
Copyboard position
sensor lever
Up
Copyboard drive | ON | forward | reverse _|
Note:
i. The direction (forward/reverse) is switched when
the copyboard drive solenoid is OFF.
ii. The direction of the drive is maintained while the
copyboard drive solenoid is ON.
Table 3-3
COPYRIGHT © 1994 CANON INC.
CANON PC300'920/925, FC210/290 REV.0 JULY 1994: PRINTED IN JAPAN (IMPRIME AU JAPON) 3-13