Xerox 3001 Service Manual page 128

CQ 1 Uniform Background
(Continued)
Probable Cause
8. Toner concentration is too high.
Corrective Action
8. Refer t o the J2 High Toner Fault in Section
2.
9. Developer bias has a short circuit t o 9. Go t o the CQ 25 Developer Bias RAP.
ground.
a
10.
An electrostatic voltage
is
out of
10.
Perform the Electrostatic Series (ADJ
9.2).
specification.
1 1.
Exposure lamp heatsink is incorrectly
11.
Install heatsink if missing (PL
6.1).
Place
installed or is missing. the heatsink at center of lamp and against
the frame.
12.
An open circuit in the photoreceptor drum
12.
Check that the ground bracket is in contact
ground circuit. with photoreceptor drum shaft (PL
9.1).
13. Defective photoreceptor drum. 13.
Replace photoreceptor drum (REP
9.3)
and
then perform the Electrostatic Series (ADJ
9.2).
14.
Defective exposure lamp or the lamp is
14. Ensure that the exposure lamp
is installed
installed incorrectly. correctly (REP
6.1).
15. The cooling fans are not turning or they 15. Go t o the 1.3 Cooling Fan RAP i n Section 2.
are defective or damaged.
C Q 1 Uniform Background