Ricoh LDD250, Service Manual

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SERVICE PROGRAM MODE
SM 5-47 C262/C265
Service
Tables
17: 6-20~6-24 (Registration Roller Delay)
The timing for starting the registration motor can be adjusted. There is a separate
adjustment for each print speed.
It is controlled based on the registration roller start timing, after the second actuator
on the pressure cylinder turns on the feed start sensor.
CAUTION: Do not use this adjustment, unless you are instructed by your service
manager.
18: 6-27~6-29 (Paper Clamp Timing Pulse)
The amount of paper feed into the paper clamper can be adjusted with this SP
mode. Adjust this when there is damage to the leading edge, and upper and lower
paper wrapping. There are separate adjustments for different paper types and print
speeds.
Adjustment:
To decrease the amount of paper bending, increase the value of the SP.
To increase the amount of paper bending, decrease the value of the SP.
19: 6-30 (Paper Feed Jam Check Pulse)
This SP mode adjusts the amount of time from starting the paper feed roller until
jam detection. If the time is long, paper misfeed is improved; but paper cannot be
fed if it is too long.
CAUTION: Do not use this adjustment, unless you are instructed by your service
manager.
20: 6-31-2 (Feed Stop Timing Pulse)
The amount of paper buckle at the registration roller can be adjusted.
The amount of paper buckle increases by 0.3 mm if you increase the setting by 1.
CAUTION: Adjust this SP mode before adjusting the Feed Slow Down Timing
(SP6-31-8).
21: 6-31-8 (Feed Slow Down Timing)
This adjusts the time that the machine starts to decrease the paper speed to adjust
the paper buckle at the registration roller.
CAUTION: Normally, do not use this SP mode to adjust the amount of paper
buckle at the registration roller. Use it only if the amount of paper
buckle is not satisfactory after adjustment to Feed Stop Timing Pulse
(SP6-31-2).