The top margin is misaligned.
Cause Solution
The dc controller PCA has been replaced or the laser/
scanner has been replaced.
1 Press the test-print switch, and make several test prints.
See
Engine test.
2 On each test print, measure the distance from the
leading edge of the paper to the print pattern. Calculate
the average distance. The optimal distance is 5 mm (0.2
inch).
3 On the dc controller PCA, adjust the variable resistor
VR830 clockwise to increase the distance, or turn it
counterclockwise to decrease the distance.
4 Repeat the procedure until the distance measures 5 mm
(0.2 inch).
The pages feed incorrectly through the ADF.
Cause Solution
The media guides are not adjusted correctly. Make sure that the guides in the ADF input tray gently touch
the sides of the original document.
Media-transport problems 395
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