Xerox Phaser 8400 Service Manual

4-20 Phaser 8400/8500/8550 Color Printer
Check Paper Path Menu
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
Typical
Value
(8400)
Typical
Value
(8500/
8550) Actions
0 Time to CCW On
peak fe (sec).
0.009 to
0.16
.02 to 1.0 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.
1 CCW On peak fe. 25 to 100 .015 to
1.4
Reports the peak effort required
to accelerate the wiper shaft
load. A smaller value could
indicate a slipping clutch.
2 CCW On fe settling
time (sec).
-2.1 to
0.25
-.03 to .3 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.
3 CCW On average fe. 10 to 50 -.1 to 0 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).
4 CCW On fe ripple. 25 to 100 .08 to .31 Reports the variation of effort
needed to rotate the wiper shaft
in the CCW direction at a
constant velocity. A larger value
could indicate particles in the
gears or non uniform
contamination of a roller
(causing a lump).

Xerox Phaser 8400 Specifications

General

Brand	Xerox
Model	Phaser 8400
Category	Printer
Language	English