Canon PC920 Service Manual page 303

CHAPTER 11 TROUBLESHOOTING
8) Use the rotary switch (SW2) on the ADF controller PCB to adjust the original leading edge
stop position.
Moving the rotary switch by a single notch changes the original stop position by about 0.3 mm.
Press the push switch (PSW) after deciding on a position to discharge the copy paper and store
the optimum value.
Relationship between Rotary Switch Direction and Original Position
Direction of rotary switch
11-38
PSW
ON
1
Figure 11-259
Clockwise
Counterclockwise
Table 11-205
COPYRIGHT © 1999 CANON INC.
0
2 8
SW2
Position (shift) of original
Toward leading edge
Toward trailing edge
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)