Ricoh Gestetner 5450, Service Manual, Page: 196 / 315

1 July, 1998 COPY IMAGE ADJUSTMENT
6-5
Replacement
Adjustment
6.2 COPY IMAGE ADJUSTMENT
6.2.1 LEADING EDGE REGISTRATION ADJUSTMENT
PURPOSE: To adjust the leading edge registration on prints by changing the
image scanning start positions in platen and ADF modes.
ADJUSTMENT STANDARD:
Within 0
±
2.0 mm (in platen mode)
Within 0
±
2.5 mm (in ADF mode)
CAUTION: This adjustment is required every time the MPU has been replaced.
1. Turn on the main switch, and make a copy in platen mode.
NOTE: The image position on the trial print that is automatically made after
making a master tends to be inconstant. Do not use the trial print to
check the copy image.
2. Measure the difference between the leading edge registration of the original
and the print. If the registration does not meet specifications, go to the next
step.
3. Access SP6-2-1 (Scan Start Position Adjustment - Platen Mode).
4. Adjust the gap.
5. Exit the SP mode and make a copy.
6. Re-measure the leading edge registration to ensure it is within specifications. If
the registration meets specifications, go to the next step.
7. Make a copy in ADF mode and repeat the same steps using SP6-2-2 (Scan
Start Position - DF Mode). The specification in ADF mode is 0
±
2.5 mm.
NOTE: The master clamping position is adjustable using SP6-130 (Drum Master
Clamp Registration). Changing the clamping position with this SP also
adjusts the leading edge registration. Normally, do not use this SP mode
for adjusting the leading edge registration.