Xerox Phaser 8400 Service Manual

4-38 Phaser 8400/8500/8550 Color Printer
Transfix Drive Slow and Transfix Drive Fast
With the drum turning at a constant velocity, the transfix roller is loaded against the drum, held for
one revolution, then raised. The velocity with which the transfix roller is moved differs for the two
tests.
R# Definition
Typical
Fast
Value
Slow Actions
0 Time to first
contact (sec)
0.22 to
0.29
0.22 to
0.50
Reports the time from the load command
to the engine until the drum indicates
contact with the pressure roller.
1 Loaded
average Y-
axis following
error (mpts)
2600 to
4200
2600 to
3400
Reports the average Y-axis following error
during the Roll With Transfix Roller Down
interval.
2 Loaded Y-
axis following
error ripple
(mpts)
75 to
1200
150 to
1100
Reports the difference between the max
and min Y-axis following errors during the
Roll With Transfix Roller Down interval
3 Time to last
contact (sec)
.300 to
0.450
0.30 to
0.80
Reports the time from the unload
command to the engine until the drum
indicates no further contact.

Xerox Phaser 8400 Specifications

General

Brand	Xerox
Model	Phaser 8400
Category	Printer
Language	English