09/2007
6-24
Phaser 8860/8860MFP Service Manual
Print Engine Check Menu Tests
Initial Issue
Diagnostics
Drive Menu
These tests exercise each subsystems driven by a motor and measure the power required (in
Watts). The exception being the Y-Axis tests which are included under the Drum menu.
X-Axis Test
This test determines if the X-Axis is operating correctly. The X-Axis Motor is driven CW (viewed
from behind the motor) until the Printhead stalls at the right stop (viewed from the front of the
system). Next, the X-Axis Motor is driven CCW until the Printhead stalls at the left stop. Finally,
the Printhead is moved into the clear and a in motion velocity reversal is performed. This test
assumes that the X-Axis Motor test produced satisfactory results.
Transfix Drive Test
CAUTION
This test does not clean the Drum before lowering the Transfix Roller. To prevent contamination
of the Transfix Roller, check that the Drum is clean before running this test.
This test exercises the Transfix Roller and reports the results. The Transfix Drive test measures
the dynamic response of the transfix mechanism at normal operating velocity.
7
Exit Bounce Interval Time
N/A
Reports exit bounce interval timing.
Duplex Operations Only
7
Duplex Turnaround Bounce
Interval Time
N/A
Reports duplex turnaround bounce inter-
val timing.
8
Duplex Deskew Bounce Inter-
val Time
N/A
Reports the duplex deskew bounce inter-
val timing.
9
Duplex Preheat Bounce Inter-
val Time
N/A
Reports the duplex Preheater trailing
edge interval timing.
10 Duplex Strip Bounce Interval
Time
N/A
Reports the duplex strip bounce interval
timing.
11 Duplex Exit Bounce Interval
Time
N/A
Reports the duplex exit bounce interval.
Table 26 X-Axis Nominal Values
R# Characteristic
Typical Value
Result
0
Left Stall Power Level
N/A
Reports the stall power when the Print-
head stalls at the left stop.
1
Left Right Distance (in)
N/A
Reports the distance between the left
and right stall points in inches. a short
distance could indicate something block-
ing the normal Printhead range of motion
(either inside of outside the right side
frame), or some significant binding
(loose cables, foreign object, Printhead
not in the Ready position, etc.). A long
distance could mean a problem with the
drive cone or motor not turning.
Table 25 Simplex / Duplex Paper Trailing Edge Bounce Times Nominal Values
R# Characteristic
Typical Value
Result
2
Left Right Traverse Average
Power Level
N/A
Reports the average power required to
move the Printhead from the left stall
point to the right stall point. A high value
could indicate a problem with the lead
screw or the Printhead bearings (lubrica-
tion, etc.), or out of spec restraint spring.
A too low value could indicate that the
restraint spring is missing or damaged.
3
Left Right Traverse Power
Ripple
N/A
Reports the ripple in the power level
required to move the Printhead from the
left stall point to the right stall point. A
high value could indicate a bad motor,
lead screw, or something interfering with
the Printhead’s motion.
4
Right Left Traverse Power
Average Level
N/A
Reports the average power required to
move the Printhead from the right stall
point to the left stall point. This value
should be lower than R2 due to the effect
of the restraint spring.
5
Right Left Traverse Power
Ripple
N/A
Reports the ripple in the power level
required to move the Printhead from the
right stall point to the left stall point. This
value should be similar to R3.
6
Turnaround Power Blip Width N/A
Reports the width of the momentary drop
in the required drive power when the
Printhead motion is being reversed. A
high value could indicate an unusual
amount of backlash in the drive mecha-
nism (lead screw/drive cone threads), or
an issue with the restraint spring where
the Printhead is not being pressed tightly
to the drive cone. If the mechanism is
tight this value could be 0.
Table 27 Transfix Drive Nominal Values
R# Characteristic
Typical Value
Result
0
Time to first contact (sec)
N/A
Reports the time from the load command
to the engine until the drum indicates
pressure roller contact.
Table 26 X-Axis Nominal Values
R# Characteristic
Typical Value
Result
Summary of Contents for Phaser 8860
Page 1: ...705P01205 September 2007 Phaser 8860 8860MFP Service Documentation...
Page 4: ...09 2007 iv Phaser 8860 8860MFP Service Manual Initial Issue Introduction...
Page 28: ...09 2007 1 2 Phaser 8860 8860MFP Service Manual Initial Issue Service Call Procedures...
Page 34: ...09 2007 2 2 Phaser 8860 8860MFP Service Manual Initial Issue Error Messages and Codes...
Page 94: ...09 2007 3 2 Phaser 8860 8860MFP Service Manual Initial Issue Image Quality...
Page 126: ...09 2007 4 2 Phaser 8860 8860MFP Service Manual Initial Issue Repairs and Adjustments...
Page 208: ...09 2007 5 2 Phaser 8860 8860MFP Service Manual Initial Issue Parts List...
Page 222: ...09 2007 6 2 Phaser 8860 8860MFP Service Manual Initial Issue Diagnostics...
Page 274: ...09 2007 7 2 Phaser 8860 8860MFP Service Manual Initial Issue Wiring Data...
Page 294: ...09 2007 8 2 Phaser 8860 8860MFP Service Manual Initial Issue Theory of Operation...
