Oki LP-1040 Maintenance Manual page 555

(e) Mark the screw position when the
skewed paper's large and small blank
spaces finally becomes the opposite of
each other.
(f) Perform more precise alignment between
the initial position and the position where
the lines moved to the left side.
Note
If you are experiencing wrinkles or missing areas on your printouts and cannot fully calibrate by
only the fuser unit's alignment calibration, try changing the speed of the heat roller (±10 or ±20
from its initial value). For more details, execute 2.3.14 Parameter in Engine Maintenance mode
(see p. 2-38). For information about engine control parameters, see the table Engine Control
Parameters in that same section.
4.
Repeat these steps of adjusting the position
of the fuser unit and printing until the skew of
the blank spaces becomes equal in test No. 5.
Then, check that the skew is still equal in test
No. 14 for a final test.
* Normally you will have finished skew/slack
calibration using test pattern No.5, so if
No.14 does not line up you can fix the
problem by calibrating the heat roller speed.
If calibrating the speed alone does not fix the
problem, look at both No.5 and No.15 and
perform the calibration again.
5.
Tighten the fuser unit securing screws.
Chapter 10 Printer Calibrationt
10-23