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Phaser 8400/8500/8550/8560 Color Printer Service Manual 4-21
General Troubleshooting
2 On fe settling time
(sec).
Reports the time it takes the
MP motor servo system to
"settle down" after the sudden
addition of the Tray 2 pick
shaft load.
A longer time could indicate
looseness in the Tray 2 pick
shaft assembly or a slipping
clutch.
3 On average fe. Reports the average effort
needed to rotate the Tray 2
pick shaft in the pick direction
at a constant velocity. An
unusual value could indicate a
binding shaft, missing
pressure springs, hard/dirty
rollers, extra friction in the
pick truck assembly.
4 On fe ripple. Reports the variation of effort
required to rotate the Tray 2
pick shaft in the pick direction
at a constant velocity. A larger
value could indicate particles
in the gears or non uniform
contamination of a roller
(causing a lump).
5 Off fe settling time
(sec).
Reports the time it takes the
MP motor servo system to
"settle down" after the sudden
release of the Tray 2 pick shaft
load.
A larger value could indicate a
dragging or slow to release
clutch.
6 Time to lift plate up
(sec).
Reports the time between the
activation of the Tray 2 lift
motor and the detection of the
raised lift plate. Out of range
values may indicate a problem
with the lifting mechanism
(which could effect the
following friction
measurement), or media left in
the tray.
Tray 2, Tray 3, and Tray 4 Pick Shaft (Continued)
R# Definition
Typical
Value
(8400)
Typical
Value
(8500/
8550/8560) Actions