Xerox WorkCentre Pro 412 Service Manual page 187

Error Status
Horizontal band
Abnormal Image Printing and Defective Roller
If abnormal image prints periodically, check the parts shown below.
NO Roller
1 OPC Drum
2 Charge Roller
3 Supply Roller
4 Developer Roller
5 Transfer Roller
6 Heat Roller
7 Pressure Roller
WorkCentre Pro 412, FaxCentre F12 &
WorkCentre M15/M15i
Check
1. Unstable high voltage contact
2. Charge roller's contamination
3. Contamination of heat roller
4. Malfunction of LSU
Abnormal image period
94.3 mm
37.7 mm
35.8 mm
44.8 mm
57.8 mm
82.5 mm
78.5 mm
Maintenance & Troubleshooting
Solution
1. Clean each contact and check good con-
tact
2. Clean charge roller
3. Replace fuser unit
4. Check Main PBA.
Kind of abnormal image
White spot. Black spot
White spot. Black spot
Horizontal dark band
Horizontal dark band
Black side contamination/transfer fault
Black spot, White spot
Black side contamination
3/03 7-17