Fig. 4-71 Drive Chain Removal - Canon NP-70 Service Manual

NP-70
4-63
4) FEED TIMING ROLLER
This rubber coated roller is operated by the Paper Feed Controller Assembly to feed the
paper at the correct time for synchronization with the image on the drum.
5)
UP-DOWN CONTROL ARM
This arm is used to lower and raise the paper pickup roller during the pickup process. This
arm accomplishes this by "tracking" the paper feed cam during the rotation of the latter.
4.10-3 REMOVAL/INSTALLATION ACTION
1) DRIVE CHAIN REMOVAL
When performing repair actions, it may be necessary to remove the drive chain before Paper
Feed Roller Assembly components. This is performed as follows (reference -Fig. 4-71):
a) After removing the rear cover, loosen the tension sprocket and lower it to permit chain
movement.
b) Remove the drive chain.
~O
Chain Drive
Sprocket
Tension Sprocket A
Drive Chain
Tension Sprocket B
Fig. 4-71 Drive Chain Removal
Clutch Gear A
aper Feed Gear
Gear Driving Sprocket
When installing, perform the previous steps in reverse order. Make sure that the tension
sprocket is repositioned so that the drive chain has no slack.
© CANON INC. Second Printingtilune, 1974