Canon NP6317 Service Manual page 176

CHAPTER 10 TROUBLESHOOTING
8. Adjusting the Tension of the Belt
The main motor drives the drum via a timing belt.
Adjust the tension of the belt by selecting the mounting hole of the main motor so that when the
center of the timing belt is pushed down with a force of 500g, the distance between the two runs of
the belt is between 20 and 25 mm.
9. Installation Position of the Transfer Guide
When installing the transfer guide, ensure that the clearance between the transfer assembly
roller and the photosensitive drum is about 1.8 ±0.2 mm, as shown in Figure 10-215.
10-12
Main motor mounting holes
Tension decreases
Spring scal
500g
Belt
Drum drive unit
Figure 10-214
Photosensitive drum
Transfer assembly roller
1.8 ±0.2 mm
Figure 10-215
COPYRIGHT © 1999 CANON INC.
Tension Increases
Main motor
Lower transfer guide
CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)