Xerox Phaser 840 Service Manual page 147

Table 4-4 Check Menu Value Key
DM Axis Performance (Test ID# 6) - This test exercises multiple aspects of the drum
maintenance system.
Test ID#
DM Axis
Performance
ID# 6
R# Definition
0 Controllability flag
Drum
Maintenance cam
1
rest to Home
sensor distance
Home sensor
hysteresis
2
Process Motor
drive train
3
backlash
Drum
Maintenance
4
clutch engage
time
Drum
Maintenance
5
clutch disengage
time
Wipe to Home
return time
6
Oil to home return
time
7
Wipe to Home
cycle time
8
Wipe to Home
cycle position
9
Oil to Home cycle
time
10
Oil to Home cycle
position
11
Wipe drag
12
13 Oil drag
Results Interpretation/Actions
The test could not establish
control of the drum maintenance
cam shaft. Verify that the shaft
0
bushings are properly installed
and the shaft is not obstructed.
High values may indicate a
mis-installed Maintenance Roller,
though some failures have been
> 19
seen within the normal operating
range.
Lower values may indicate worn
or broken maintenance drawer lift
< 9
ears, though some failures have
been seen within the normal
operating range.
Diagnostics and Adjustments 4 - 131