Laser Unit Alignment - Ricoh B064 Service Manual

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3.5.4 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

2. Remove the exposure glass (☛ 3.4.2).

3. Remove the LD unit cover and polygon motor cover (☛ 3.5.2).

4. Remove the right cover (☛ 3.5.3).

5. Loosen the screws of the laser exposure unit

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.

B064R913.WMF

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