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. Measure this distance 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. EN Chapter 6 Removing and replacing parts 175