Canon Finisher-AB1 Service Manual page 371

8) Press the push switch SW385 [1] to move the
stapler toward the front.
SW382
SW381
SW383 SW384 SW385
(-) (+) ENTER
F-5-66
9) Place A4 paper [1] in the intermediate handling
tray. (Be sure to butt the paper against the rear of
the handling tray.)
F-5-67
10) Check to make sure that the stapling position is 5
+/-2 mm [1] as a result of the foregoing steps.
Otherwise, go back to step 6).
[1]
If the LED indicates other than '0', the adjustment is
likely to have failed. Start over.
[1]
Chapter 5
F-5-68
[1]
5-23