Ricoh Neptune-P1, Service Manual

Page: 188 / 457

If you see white or black lines at LPH 1-2, go to the next step.
• White lines occur if too few LEDs come on at the joint.
• Black lines occur if too many LEDs come on at the joint.
3. Left line:
• If the left line is white, adjust SP2952-1 to a smaller value.
• If the left line is black, adjust SP2952-1 to a larger value.
4. Right line:
• If the right line is white, adjust SP2952-2 to a smaller value.
• If the right line is black, adjust SP2952-2 to a larger value.
5. After the adjustment, feed the blank sheet again to print one more pattern.
6. Check the results of the adjustment.
7. Do the adjustment again until the lines appear faint.
• The lines cannot be completely erased.
Main Scan Adjustment: LED Light Level at LPH Joints
After you do the previous procedure to adjust the main scan at the LPH joints, you can do a fine adjustment
on this area. To do this, you increase or decrease the intensity of the light from the four LEDs at the joints.
SP Adjustments
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