Check Paper Path Menu - Xerox PHASER 8500 Service Manual

General Troubleshooting

Check Paper Path Menu

4-16
Runs the Media Path Drive train and engages the Head Maintenance Clutch
on the fly then disengages the clutch. The test is repeated in both directions to
determine clutch characteristics, steady state drive requirements, bearing
status, etc.
Wiper Shaft
R# Definition
0 Time to CCW On
peak fe (sec).
1 CCW On peak fe.
2 CCW On fe settling
time (sec).
3 CCW On average fe. 10 to 50
Typical
Typical Value
Value (8500/
(8400) 8550/8560) Actions
0.009 to .02 to 1.0
0.16
25 to 100 .015 to 1.4
-2.1 to 0.25 -.03 to .3
-.1 to 0
Phaser 8400/8500/8550/8560 Color Printer Service Manual
Reports how long it takes the
MP motor servo system to
react to the sudden addition of
the wiper shaft load. Larger
values may indicate a slipping
or slow to engage clutch.
Reports the peak effort
required to accelerate the
wiper shaft load. A smaller
value could indicate a slipping
clutch.
Reports the time it takes the
MP motor servo system to
"settle down" following the
sudden addition of the wiper
shaft load.
A longer time could indicate a
looseness in the wiper shaft
assembly or a slipping clutch.
Reports the average effort
required to rotate the wiper
shaft in the CCW direction at a
constant velocity.
An unusual value could
indicate a difference in the
composition and/or number of
the rollers, the nip pressure,
or out of range mechanical
dimensions due to wear or
contamination (such as paper
dust increasing the effective
diameter of a roller).