Canon NP6085 Service Manual page 336

4. MECHANICAL SYSTEM
3. Adjusting the Tension of the Scanner Drive
Cable
After routing the scanner drive cable, be sure
to perform the following to adjust its tension:
1) Remove the two mounting screws, and remove
the upper left cover.
2) Loosen the fixing screw of the tension spring
bracket.
3) Turn the tension adjusting screw so that the
distance a in Figure 4-205 is as indicated.
• 1.0 ±0.5 mm if the cable has been replaced.
• 0.5 to 3.5 if the cable has been in service.
Adjusting screw
Fixing screw
Figure 4-205
Reference:
Turning the adjusting screw clockwise
increases the distance a, thereby increas-
ing the tension.
Caution:
1.Check to make sure that the scanner
drive cable is not twisted or it has not rid-
den over the pulley.
2.Move the No. 1 mirror mount and the No.
2 mirror mount by hand to make sure that
they move smoothly. At this time, be care-
ful not to touch the deflecting plate.
4-16
COPYRIGHT © 1996 CANON INC.
4. Adjusting the Mirror Position (optical length
1) Move the No. 1 mirror mount and No. 2/No. 3
2) Set the mirror positioning tool (front, TKN-
M4X6
Binding screws
a
White plate
mounting
plate (rear)
3) Tighten the screw on the clamp used to fix the
4) Remove the tools.
CANON NP6085 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
between No. 1 mirror and No. 2/No. 3 mirror)
mirror mount to the left.
0509) and the mirror positioning tool (rear,
TKN-0510) as shown.
TKN-0510
No. 1 mirror
mount
No. 2 mirror mount
Figure 4-206
scanner drive cable to the No. 1 mirror mount.
Figure 4-207
TKN-0509
M4X6
Binding screw
White plate
mounting
plate (front)
Clamp
Screw