Xerox PHASER 8500 Service Manual page 145

Phaser 8400/8500/8550/8560 Color Printer Service Manual
Deskew Shaft (Continued)
R# Definition
8 CW On fe settling
time (sec).
9 CW On average fe.
10 CW On fe ripple.
11 CW Off fe settling
time (sec).
Typical
Typical Value
Value (8500/
(8400) 8550/8560) Actions
0.010 to 0 to .2
0.20
-610 to -3 to 1.3
-220
110 to 400 -2.25 to
-1.0
0.010 to .01 to .05
0.20
General Troubleshooting
Reports the time it takes the
MP motor servo 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.
Reports the average effort
required to rotate the deskew
shaft in the CW 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).
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.
4-15