Laser Diode Unit; Laser Beam Pitch Adjustment - Ricoh G176 Service Manual

Laser Unit

3.4.5 LASER DIODE UNIT

Laser Unit (See "Laser Unit")
[A] Spring
[B] LD unit holders (x 2)
[C] Loosen the screw
[D] Nut
[E] LD Unit
Do not remove the screws that secure the LD board.
Do not touch any variable resistors on the LD board.
Reinstallation:
Tighten the screw [C] until the unpainted portion of the screw
After installing the LD unit, check the test pattern for the final adjustment (see the
following procedure).

3.4.6 LASER BEAM PITCH ADJUSTMENT

1. Print out the following test patterns – cross-stitch pattern and two-dot argyle pattern.
Select the test pattern with SP 2902.
After selecting a pattern, the display automatically goes to SP 5902. Use SP
5902-1 to print one test pattern.
After completing the adjustment, reset SP 2902 to 'no specified'.
G176/G177/G176L 3-10
is not visible.
SM