• Do not touch any variable resistors on the LD board.
When Reinstalling the Laser Diode Unit:
• Tighten the screw [C] until the unpainted portion of the screw Ê is not visible.
• After installing the LD unit, check the test pattern for the final adjustment (see the following procedure).
Laser Beam Pitch Adjustment
1. Print out the following test patterns.
• Select the test pattern with SP 5902-3.
• Use SP 5902-1 to print one test pattern.
2. Check this test pattern.
3. Adjust the LD unit holder position: Tighten or loosen the screw [C] (see the previous page) until the
printout appears as the sample test pattern below.
Laser Unit
33
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