EN Chapter 6 Removing and replacing parts 175
Adjusting the top margin
When you replace the engine controller board, you must readjust the top margin as follows:
Figure 82. Location of VR501
1 After setting the VR501 on the engine controller board to the center position (0), load letter or A4
paper in tray 2, 3, or 4. Press the engine test print button (located on the left side of the printer,
below the vent) to make several test prints.
Figure 83. Adjusting the top margin
2 Measure the distance between the leading edge of the paper and the print pattern. Measure all
the test prints and calculate the average.
3 Adjust VR501 so that the margin becomes 2 mm (.08 inch). Turn VR501 clockwise to increase
the margin or counter-clockwise to decrease the margin.
4 Make several test prints again and perform step 2 above. If the top margin is still incorrect, repeat
the procedure.
Measure this distance
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