4-40
Phaser 8400/8500/8550/8560 Color Printer Service Manual
General Troubleshooting
This test does a chase using a special sheet of preprinted media and records
the y-axis following error.
This test modifies the Y-Axis servo loop so that it is unstable and oscillates.
The oscillation frequency is recorded while the drum is advanced for two
revolutions. Checks for correct belt tension and variations in tension during
operation.
Y-Axis Belt Slip
R# Definition
Typical
Value
(8400)
Typical
Value (8500/
8550/8560)
Actions
0
Initial Peak Y-Axis
FE (mpts)
0 to 12000
1200 to 8000 Reports the amplitude of the
first Y-Axis following error
peak.
1
Max Following
Peak Y-Axis FE
(mpts)
0 to 11000
1100 to 7500 Reports the amplitude of the
maximum Y-Axis FE peak after
the first.
2
Average Y-Axis FE
(mpts)
0 to 4000
2200 to 3500 Reports the average of the Y-
Axis following error during the
roller down portion of the
transfix operation.
Y-Axis Belt Tension
R# Definition
Typical
Value
(8400)
Typical
Value (8500/
8550/8560)
Actions
0
Min Resonant
Frequency (hz)
10 to 150
4.5 to 175
Reports the min resonant
frequency over the data set.
1
Max Resonant
Frequency (hz)
175 to
3000
-4400 to
10000
Reports the max resonant
frequency over the data set.
2
Min Resonant
Frequency Revs
(revs)
Reports the number of full Y-
Axis revs required to locate the
min frequency configuration.
3
Min Resonant
Frequency Angle
(deg)
-0.001 to -
0.2
-33 to -20
Reports the amount of
additional Y-Axis rotation
required to locate the min
frequency configuration.
Содержание Phaser 8500
Страница 1: ...Service Manual Phaser 8400 8500 8550 8560 701P27910 Color Printer...
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Страница 206: ...4 76 Phaser 8400 8500 8550 8560 Color Printer Service Manual General Troubleshooting...
Страница 207: ...5 Chapter Print Quality Troubleshooting In this chapter Print Quality Problems Overview Analyzing Service Test Prints...
Страница 265: ...7 Chapter Cleaning and Maintenance In this chapter Maintenance Inspection Cleaning...
Страница 323: ...9 Chapter Parts Lists In this chapter Serial Number Format Using the Parts List Xerox Supplies...
Страница 342: ...9 20 Phaser 8400 8500 8550 8560 Color Printer Service Manual Parts Lists...
Страница 374: ...I 6 Phaser 8400 8500 8550 8560 Color Printer Service Manual Index Notes Reference Description...
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