Chapter 5 Troubleshooting; Standards And Adjustments; Mechanical System - Canon FY8-13FW-000DADF-A1 Service Manual

I. STANDARDS AND
ADJUSTMENTS
A.

Mechanical System

1 Adjusting the DADF Height
1) Remove the copier's rear cover.
Turn the bolt of the left/right support so
that the distance a between the two rubber
feet at the rear and the horizontal size plate
on the copyboard glass is 0.2±0.1 mm
(about two sheets of copy paper of 64 g/
2
m ) when the DADF is closed, i.e., the feet
at the front are in contact with the
copyboard glass.
After adjustment, tighten the nuts to lock
them.
a
Support
Rubber foot
(rear)
a=0.2+0.1mm
Horizontal
size plate
Copier's
Nut
rear cover
Bolt
Figure 5-101
2) After adjustment, check to make sure that
both left and right rubber feet at the front of
the DADF are in contact with the
copyboard glass. Otherwise, adjust the left
and right supports once again.
COPYRIGHT © 1998 CANON INC.
DADF
Rubber foot
(front)
Copier
Copyboard glass
CANON DADF-A1 REV.0 DEC. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)

CHAPTER 5 TROUBLESHOOTING

2 Adjusting the Original Stop
Position
Adjust the original stop position after
"adjusting the DADF height"; then, perform
"correcting the skew," "adjusting the distance
to the horizontal size plate," and "adjusting the
original leading edge stop position."
a. Correcting the Skew
1) Remove the screw, and detach the DADF
controller cover.
DADF controller cover
Screw
Figure 5-102
2) Shift bit 1 of the DIP switch (DSW1) on
the DADF controller PCB to ON.
1 2 1
J15
CB1
7
J1
1
8
J10
1
DSW1
SW1
SW3
6
SW2
Figure 5-103
3) Place an A3 or 279.4×431.8-mm
(11"×17") sheet of copy paper (64 g/m
on the original tray.
4 1 2 1 10
1 9
J5
13
J8
J2 J3 J14
1
1
J13
2
1
3
1
2
J11
1
B12 B1
1
3
2 1
TP1 J12
A1 J9 A12
5-1
14
2
J6
J7
2
)