Xerox Phaser 8400 Service Manual page 176

Wiper Drive (Continued)
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
11 Bottom Encounter
Distance (uin)
12 Turnaround
Recovery time (sec)
Paper Path Drive
This test moves the gear train in one direction while capturing data, does a reversal to capture
reversal transient data, then operates in the other direction.
R# Definition
0 Forward Drive Power
Level (watts)
1 Up Motion Drive
Error Ripple (watts)
2 Reverse Drive
Power Level (watts)
3 Down Motion Drive
Error Ripple (watts)
4 Swing Arm
Transition Time (sec)
4-36
Typical Typical
Value Value
(8400) (8500/
8550)
-2500 to -4250 to -
-1800 3900
0.001 to -0.05 to
0.250 .35
Typical Typical
Value Value
(8400) (8500/
8550)
1.0 to 4.0
0 to 1.5
-4.0 to
-1.0
0 to 1.5
.03 to .06
Phaser 8400/8500/8550 Color Printer
Actions
Reports the distance up from the
upper limit of travel at which the
wiper first encounters the lower
travel limit.
Reports the time following the
start of the turnaround motion
that the motion drive error return
to normal in the opposite
direction.
Actions
Reports the average drive power
level in the foreword direction.
Reports the average drive ripple
level in the forward direction.
Reports the average power in the
reverse direction.
Reports the average drive ripple
in the forward direction.
Reports the time that the lower
portion of the paper path drive is
disconnected while the swing
arm transitions to the other drive
position.