Laser Unit
D131/D132/D133 4-32 SM
4.5.4 LASER UNIT ALIGNMENT
If you have just disassembled the LD unit, to avoid serious damage to the eyes from
accidental exposure to laser beams you must confirm that the machine has been
re-assembled completely before operation.
This adjustment corrects the parallelogram pattern to the desired rectangular pattern for printing; it
does not correct the skew of scanned images.
1. Execute SP2902-003 (Test Pattern - Printing Test Pattern) 018 to print the A4 LEF pattern.
Check the printed patterns and estimate the angle of adjustment required.
2. Remove the exposure glass.
p.4-13
3. Remove the polygon motor cover.
p.4-29
4. Remove the right cover.
p.4-9
5. Loosen the screws of the laser exposure unit (
x 3).
6. While watching the scale [A], use a flathead screwdriver [B] to move the laser exposure unit
left or right to adjust the position of the unit.
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