Xerox Phaser 8400 Service Manual page 183

Check Menu Value Key Table (Continued)
Stripper Contact - This test holds the drum stationary while the stripper solenoid is activated
and released. The drum servo error signal illustrates activation/deactivation timeing and how
strongly the drum was contacted by the blade.
Test ID# R Definition
#
Stripper Contact 0 Engage
Displacement
(mpts)
1 Engage Time
(sec)
2 Engaging Period
(sec)
3 Engaging
Amplitude (mpts)
4-38
Results Interpretation/Actions
Reports the static difference
between the average ya_fe
before and after the blade
contacts the drum, indicating
how strongly the blade is
interacting with the drum while
pushing onto the drum.
May be an indication as to the
condition of the blade (stiffness,
dirty, bent, delaminated, etc.).
Another potential factor could be
the solenoid range of travel or
engagement force (solenoid/
solenoid drive strength or return
spring strengh).
Reports time between
engagement of the stripper
solenoid and initial contact
betwee the blade and the drum.
May indicate the geometry of
the mechanism (i.e. parts out of
tolerance, misassembled, bent,
etc), causing an incorrect blade
to drum gap.
Reports time between stripper
solenoid engagement and the
point when the reaction of the
drum to the contact of the blade
fades back into the ripple
(noise). Another indication of
blade to drum interaction. The
profile shape (R2/R2) could be a
dynamic indication of the blade/
drum interaction as is the static
value reported by R0.
Reports the magnitude of the
reaction of the drum to the
contact of the blade. (See R2)
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