Xerox Phaser 8400 Service Manual page 180

Drum Maintenance Drive (Continued)
With the Y-axis rotating, the drum maintenance unit is loaded against the drum for a short time in
each configuration (roller and blade/blade only)
R# Definition
9 Blade Disengaged
Time (sec)
Tilt Drive
This test drives the printhead tilt mechanism through one cycle to determine if it is controllable
and operating as expected.
R# Definition
0 Tilt Engage Cap
Position (min)
1 Pre Standby Peak
Location ()
2 Pre Standby peak
Magnitude (pm ticks)
3 Post Wipe Peak
Location ()
4 Post Wipe peak
Magnitude (pm ticks)
4-40
Typical Typical
Value Value
(8400) (8500/
8550)
-0.05 to
0.05
Typical Typical
Value Value
(8400) (8500/
8550)
10 to 600 50 to 550
325 to -125 to
3100 10
-5100 to -150 to
-500 -20
1400 to -450 to
4150 150
-4000 to -130 to
-75 25
Phaser 8400/8500/8550 Color Printer
Actions
Reports the time from the unload
blade command to the engine
until the drum indicates no
further blade contact.
Actions
Reports the distance from the
cap Home position to the tilt cam
engage point.
Reports the distance around the
tilt cam from the tilt engage
position to the pre standby peak.
Should be in degrees, but
currently units/scaling are
unverified.
Reports the pm motor following
error at the pre standby peak
location.
Reports the distance around the
tilt cam from the tilt engage
position to the post wipe peak.
Should be in degrees, but
currently units/scaling are
unverified.
Reports the pm motor following
error at the post wipe peak
location.