Dell 1135N Service Manual page 96

.1.9 Periodic De ective Im
If an image defects appears at regular intervals on the printed-paper, it is due to a faulty or damaged roller.
efer to the table below and check the condition of the appropriate roller.
oller
OP Drum
Developing oller
harging oller
Supply oller
Transfer oller
Pressure oller
Heat oller
1 OP
2 Developing oller
3 harging roller
4 Supply oller
Service Manual
Ali me t d rou leshooti
e
Period mm
7 . mm White and Black Spots
3 .2mm White spot, Horizontal black band
26.7mm Black Spot and line and periodic band
47. mm Periodic Band by little difference of density
47mm host, Damaged image by abnormal transfer
7 .4mm Background
77. mm
Black spot and image ghost
7
6
Phe ome o
3
1
5
Tranfer roller
6 Pressure roller
7 using roller
4-23
De ective rt
Toner artridge
Transfer roller
user
2
4