Filter
Top Products
Phaser 8400/8500/8550/8560 Color Printer Service Manual 4-33
General Troubleshooting
This test drives the X-Axis Motor in each direction until the Printhead stalls
into the stops. Next, the test moves the Printhead into the clear and performs
an on the fly reversal.
X-Axis Drive
R# Definition
Typical
Value
(8400)
Typical
Value (8500/
8550/8560)
Actions
0 Right Stall Power
Level (watts)
5 to 10 .5 to 3.3 Reports the motor/drive
electronics stall power.
An abnormal level may indicate
a motor/motor drive problem.
1 Left Right Distance
(in)
0.32 to
0.48
-.15 to .5 Reports the distance between
the left and right stall points.
An abnormal value may
indicate an problem that
restricts the range of motion
(pinched cable, etc.).
2 Right Left Traverse
Average Power
Level (watts)
3.5 to 8.5 .5 to 1.55 Reports the average power
required to move the printhead
from the right hard stop to the
left hard stop. An abnormal
value may indicate a problem
with the lead screw or
printhead bearings
(lubrication, etc.).
3 Right Left Traverse
Power Ripple
(watts)
.20 to 1.8 -0.5 to 1.0 Reports ripple in the power
level needed to move the
printhead from the right hard
stop to the left hard stop. An
abnormal value may indicate a
problem with roughness in the
drive mechanism or an
interference with the printhead
motion.
4 Left Right Traverse
Power Average
Level (watts)
4.0 to 8.5 .5 to 1.75 Same as R2 except for the
other direction of motion.
5 Left Right Traverse
Power Ripple
(watts)
1.2 to 1.5 -.01 to .05 Same as R3 except for the
other direction of. motion.
6 Turnaround Power
Blip Width (watts)
.02 to .11 Reports the width of the
momentary drop in the
required drive power when the
printhead motion is being
reversed. An abnormal value
may indicate an unusual
amount of play in the drive
mechanism.