Xerox WorkCentre C2424DX Service Manual page 177

Deskew Shaft (Continued)
Runs the media path drive train and engages the deskew 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.
R# Definition
CW On peak fe.
7
CW On fe settling
8
time (sec).
CW On average fe.
9
CW On fe ripple.
10
CW Off fe settling
11
time (sec).
Wiper Shaft
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.
R# Definition
Time to CCW On
0
peak fe (sec).
General Troubleshooting
Typical
Value Actions
-950 to Reports the peak effort required to accelerate
-450 the deskew shaft load. A smaller value could
indicate a slipping clutch.
0.010 to Reports the time it takes the MP motor servo
0.20 system to "settle down" after the sudden
addition of the deskew shaft load.
A longer time could indicate a looseness in the
deskew shaft assembly or a slipping clutch.
-560 to Reports the average effort required to rotate
-261 the deskew shaft in the CW direction at a
constant velocity.
A 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).
83.0 to Reports the variation of effort required to rotate
307 the deskew shaft in the CW direction at a
constant velocity.
A larger value could indicate particles in the
gears or non uniform contamination of a roller
(causing a lump).
0.01 to Reports the time it takes the MP motor servo
0.20 system to "settle down" after the sudden
release of the deskew shaft load.
A larger value could indicate a dragging or
slow to release clutch.
Typical
Value Actions
0.66 to Reports how long it takes the MP motor servo
system to react to the sudden addition of the
0.69
wiper shaft load. Larger values may indicate a
slipping or slow to engage clutch.
4-19