Xerox Phaser 8400 Service Manual

General Troubleshooting 4-35
Check Drive Menu
Wiper Drive
This test moves the wiper drive mechanism through the complete range of its motion in each
direction and does an “on the fly” reversal to verify operability.
R# Definition
Typical
Value
(8400)
Typical
Value
(8500/
8550) Actions
0 Up Motion Drive
Error (uin)
120 to
275
-.06 to -.4 Reports the average following
error while move the wiper up
from the low limit to the lock
encounter point.
1 Up Motion Drive
Error Ripple (uin)
35 to 150 .06 to .2 Reports the difference between
the max and min following error
over the same interval.
2 Up Distance (uin) 3200 to
4600
4000 to
4350
Reports the difference between
the max and min limits of travel
when moving up.
3 Lock Encounter
Distance (uin)
1300 to
2500
3500 to
4450
Reports the distance up from the
lower limit of travel at which the
head lock latch is encountered.
4 Lock Engage
Distance (uin)
350 to
700
2500 to
4500
Reports the distance up from the
lower limit of travel at which the
head lock latch engages.
5 Lock Engage Peak
(uin)
-250 to
-125
.25 to 1.0 Reports the peak following error
at the point the latch engages.
6 Down Motion Drive
Error (uin)
-250 to
-125
.25 to 1.0 Reports the average following
error while move the wiper up
from the low limit to the lock
encounter point.
7 Down Motion Drive
Error Ripple (uin)
40 to 150 .05 to .8 Reports the difference between
the max and min following error
over the same interval.
8 Down Distance (uin) 3200 to
4600
4000 to
4350
Reports the difference between
the max and min limits of travel
when moving up.
9 Lock Disengage
Distance (uin)
-2000 to
-50
-95 to -60 Reports the distance up from the
upper stall point at which the
head lock latch releases.
10 Lock Disengage
Peak (uin)
-800 to
-150
.30 to 1.2 Reports the peak following error
at the point the latch releases

Xerox Phaser 8400 Specifications

General

Brand	Xerox
Model	Phaser 8400
Category	Printer
Language	English