Ricoh G176, Service Manual

Page: 51 / 294

Laser Unit
SM 3-11 G176/G177/G176L
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2. Check these test patterns. If the laser beam pitch is not correct, the images are as
follows.
ƒ Cross-stitch pattern: Vertical black strips seem to appear.
ƒ
Argyle pattern: The density of the diagonal lines is light or the lines have
disappeared.
3. Adjust the LD unit holder position: Tighten or loosen the screw [C] (see the previous
page) until the printout appears as follows.
ƒ Cross-stitch pattern: The thin lines are of uniform thickness (no striping effect
should appear on the printout).
ƒ Grid pattern: The diagonal lines appear clearly and are of normal density.