Ricoh D0C8, Service Manual

Page: 491 / 1647

Image Adjustment
SM 4-257 D0CA/D0C9/D0C8/D0CB
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[1]: Feed direction, [2]: Image area
1.
Enter the SP mode.
2.
Print out the test pattern (14: 1-dot trimming pattern) with SP2-109-003.
3.
Check the erase margin A and B. Adjust them with SP2-103-001 to -004 if necessary.
•
Leading edge: 0.0 to 9.9 mm (default: 4.2 mm)
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Side-to-side: 0.0 to 9.9 mm (default: 2.0 mm)
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Trailing edge: 0.0 to 9.9 mm (default: 4.2 mm)
4.20.6 COLOR REGISTRATION
Line Position Adjustment
The automatic line position adjustment usually is done for a specified condition to get the best
color prints.
Do the following if color registration shifts:
•
Do "Auto Color Registration" as follows to do the forced line position adjustment.
1. First do SP2-111-003.
2. Then do SP2-111-001.
To check if SP2-111-001 was successful, watch the screen during the process. A message
is displayed at the end. Also, you can check the result with SP2-194-010 to -012.
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You should also do the line position adjustment at these times:
•
After you transport or move the machine (you should do the forced line position
adjustment if you install the machine at the user location) if the machine is
pre-installed at the workshop and moved to the user location,
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When you remove or replace the motors, clutches, and/or gears related to the
drum/development/transfer sections
•
When you remove or replace the image transfer belt, image transfer belt unit or laser
optical housing unit