Canon LBP-860, Руководство по обслуживанию

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6
C. Electrical Adjustment
1. adjustment
on
c&troller been
adjusted at the factory. Therefore, it does
not require adjustment in the field 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 Lest prints and check
the leading
edge
registration is 2.0 mm. If
it is not, it.)
1) Perform steps 1 and 4 on page
and replace the DC controller PCB.
2) Set PCB on the DC controller to
then place sheets in the cassette.
Press the TEST PRINT switch and
obtain several test prints.
Figure 6-6
3) Measure the distance [a) from the
leading edge of each sheet to the
pattern. (See Figure 6-6) Take the
average of the measured distances.
Adjust VR202 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 figure
Obtain 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
Correction