Cq 1 Uniform Background - Xerox 3001 Service Manual

CQ
1
Uniform Background Probable Cause Corrective Action
Definition
1. Corotrons or end blocks are damaged, 1.
Background is a degree of toner wires loose, or voltages are out of
contamination in the non-image areas of the
specification.
copy. The background defect can be uniform
over the entire copy or localized.
2. Dirty transport platen, platen, exposure 2.
lamp, or lens.
3. Developer material has more than 30K
3.
feet (9K metres) of copies on it.
4. Incorrect toner or developer is installed in 4.
the copier.
5.
Photoreceptor drum is not being cleaned 5.
correctly.
WARNING
There will be a time delay between the time
the code [lo] is entered and the time the
motor starts
to
turn. The motor will not start
until the fuser
is
at the correct temperature.
Repair or replace corotron and then
perform the Electrostatic Series (ADJ 9.2)
and the Image Density ADJ 9.4.
Clean the transport platen and the platen
with Anti-Static Fluid.
If required, apply a small amount of Film
Remover (USO) or General Cleaning
Solvent (EO) t o a towel t o remove excess
contaminants from the lens and exposure
lamp. Then apply Anti-Static Fluid t o the
towel and wipe the lens and exposure
lamp.
Replace the developer material (REP 9.8)
and perform the Electrostatic Series (ADJ
9.2).
Ensure the Customer is using the correct
developer material and toner.
Remove the xerographic module (REP 9.1)
and lightly dust the photoreceptor drum
with zinc stearate. Install the xerographic
module. Enter the diagnostic mode and
enter the codes [ I 0 and 191 t o clean the
photoreceptor drum. Remove the
xerographic module. Ensure that the
drum i s cleaned correctly.
(Continued)
CQ 1 Uniform Background