Canon LBP-1260, Руководство по обслуживанию

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C. Electrical Adjustment
1. Leading edge registration adjustment
on the DC controller PCB has been
adjusted at the factory. Therefore. it does
not require adjustment in the during
installation. However, when the DC
controller PCB is replaced, the leading edge
registration must be readjusted by using
the following procedure. you replace the
paper pick-up unit or the laser/scanner
unit. make several test prints and check
the leading edge registration is 2.0 mm. If
it is not, adjust it.)
1) Perform steps 1 and 5 on page
and replace the DC controller PCB.
2) Set PCB on the DC controller to
then place sheets
in
t h e
the TEST PRINT switch
and obtain several test prints.
3) Measure the distance from the
leading edge of each sheet to the
pattern. (See Figure Take the
average of the measured distances.
4) Adjust VR201 so that the value
obtained in step 3 is 2.0 mm according
to Table 6-4. For example, if the
average value in step 3 Is 2.6 mm, the
difference is 0.6 mm. Set to
by turning it clockwise. (See the table
6-4 and 6-7.)
5) Obtaln several prints again. Perform
step 3 again and confirm that the
leading edge registration is 2.0 mm. If
it is not. perform steps 2 to 5 again.
Table