Xerox Phaser 8400 Service Manual page 159

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
10 CW On fe ripple.
11 CW Off fe settling
time (sec).
General Troubleshooting
Typical Typical
Value Value
(8400) (8500/
8550)
110 to -2.25 to
400 -1.0
0.010 to .01 to .05
0.20
Actions
Reports the variation of effort
required to rotate 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).
Reports the time it takes the MP
motor servo 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.
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