Xerox Phaser 8500, Service Manual

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Phaser 8400/8500/8550/8560 Color Printer Service Manual 4-45
General Troubleshooting
This test turns on the specified motor and runs it at constant velocity for
approximately 20 revolutions while recording drive data. The test is the same
for each motor. Requesting a test for tray not installed generates an “Option
Not Detected” message.
This test turns on the specified motor and runs it at constant velocity for
approximately 25 revolutions while recording drive data. The test is the same
for each motor. Requesting a test for a tray not installed generates an “Option
Not Detected” message.
Tray 2, Tray 3, Tray 4, Lift Motor
R# Definition
Typical
Value
(8400) Typical
Value (8500/
8550/8560)
Actions
0 Motor Peak Power
(watts) 1 to 2.5 Reports max amount of power.
1 Motor Average
Power (watts) .25 to .55 Reports the average motor
drive power over the last half
of the run interval.
2 Brake Average
Power (watts) .10 to .20 Reports the average motor
brake power over the stop with
brake interval.
Tray 3 and Tray 4 Pick/Feed Motor
R# Definition
Typical
Value
(8400) Typical
Value (8500/
8550/8560)
Actions
0 Motor fe ripple
(ticks) Reports amount of variation of
the motor following error.
1 Motor fe average
(ticks) Reports the motor following
error average value.
2 Motor drive voltage
ripple (volts) Reports amount of variation of
the motor drive voltage.
3 Motor drive voltage
(volts) Reports the motor drive
voltage average value.
4 Motor drive power
ripple (watts) Reports amount of variation of
the motor drive power.
5 Motor drive power
average (watts) Reports motor drive power
average value.