Xerox Phaser 8860 Service Manual page 250

Table 38 Stripper Contact Nominal Values
R# Characteristic Typical Value
7 Releasing Amplitude (mpts) N/A
Drum Maintenance Contact Test
This test exercises the Drum Maintenance Kit. The Drum is driven by a low amplitude vibration
and the Drum Maintenance Kit is advanced through its cycle. The reaction of the Drum servo
error signal indicates when the drum was contacted by the roller and blade.
Table 39 Drum Maintenance Contact Nominal Values
R# Characteristic Typical Value
0 Initial Contact Position (Pro- N/A
cess Motor counts)
Motors Menu
This menu contains a test for each of the system motors.
Y-Axis Motor Test
The Y-Axis motor is moved to the Home position, then turned On and run slowly for one revolu-
tion. The slow motion removes the effect of inertia from the test, and the one revolution avoids
a large system status change via any permanently connected loads. With the slow operating
speed used by the test, the motor may stall at a bad commutator segment. Unusual average
values might indicate a weak motor. The motor following error, drive voltage, and power ripple
values indicate how smoothly the motor is able to turn through one revolution. Depending on
the mechanical state of the drive when this test is run, both the ripple and average values may
vary significantly from run to run due to the variation in the external load.
Table 40 Y-Axis Motor Nominal Values
R# Characteristic Typical Value
0 Motor following error ripple N/A
(ticks)
1 Motor following error aver- N/A
age (ticks)
2 Motor drive voltage ripple N/A
(volts)
3 Motor drive voltage (volts) N/A
4 Motor drive power ripple N/A
(watts)
5 Motor drive power average N/A
(watts)
Diagnostics
Print Engine Check Menu Tests
Result
Reports the magnitude of the reaction of
the Drum to the withdrawal of the blade.
See R3.
Result
Reports the distance the Process Motor
was moved (raising the Drum Mainte-
nance Kit, before a Y-Axis reaction was
detected. Shows that the Drum Mainte-
nance Kit is raising and provides infor-
mation on the blade/drum gap.
Result
Reports variation of the motor following
error over the recording interval.
Reports the motor following error aver-
age value of the recording interval.
Reports amount of variation of the motor
drive voltage over the recording interval.
Reports the motor drive voltage average
value of the recording interval.
Reports variation of the motor drive
power over the recording interval.
Reports the motor drive power average
value of the recording interval.
Table 40 Y-Axis Motor Nominal Values
R# Characteristic
6 Motor performance
X-Axis Motor Test
The X-Axis motor is turned On and run slowly for one revolution. The slow motion removes the
effect of inertia from the test, and the one revolution avoids a large system status change via
any permanently connected loads. With the slow operating speed used by the test, the motor
may stall at a bad commutator segment. The connected drive cone could modify the drive
power values if the threads were defective, dry, or if the guide notch was disengaged. The A
and B voltage measurements should remain constant if the drive is operating properly.
Table 41 X-Axis Motor Nominal Values
R# Characteristic
0 Motor Voltage A Ripple
(volts)
1 Motor Voltage A Average
(volts)
2 Motor Voltage B Ripple
(volts)
3 Motor Voltage B Average
(volts)
4 Motor Drive Power Ripple
(watts)
5 Motor drive power average
(watts)
Process Motor Test
The Process Drive motor is moved to the Home position, then the motor is jogged CW until it
begins to engage the Drum Maintenance Kit. Next, the motor is run slowly CCW for one revolu-
tion. The slow motion removes the effect of inertia from the test, and the one revolution avoids
a large system status change via any permanently connected loads. With the slow operating
speed used by the test, the motor may stall at a bad commutator segment. Unusual average
values might indicate a weak motor. The motor following error, drive voltage, and power ripple
values indicate how smoothly the motor is able to turn through one revolution.
Table 42 Process Motor Nominal Values
R# Characteristic
0 Motor following error ripple
(ticks)
1 Motor following error aver-
age (ticks)
09/2007
6-30
Typical Value Result
N/A Reports the ability of the motor to
respond to servo commands.
Typical Value Result
N/A Reports amount of variation of the motor
phase A drive voltage over the recording
interval.
N/A Reports the motor phase A drive voltage
average value over the recording inter-
val.
N/A Reports amount of variation of the motor
phase B drive voltage over the recording
interval.
N/A Reports the motor phase B drive voltage
average value over the recording inter-
val.
N/A Reports amount of variation of the motor
drive power over the recording interval.
N/A Reports the motor drive power average
value of the recording interval.
Typical Value Result
N/A Reports variation of the motor following
error over the recording interval.
N/A Reports the motor following error aver-
age value of the recording interval.
Phaser 8860/8860MFP Service Manual
Initial Issue