![background image](http://html.mh-extra.com/html/samsung/scx-4828fn-laser-multi-function-printer/scx-4828fn-laser-multi-function-printer_service-manual_337203075.webp)
Alignment & Troubleshooting
Service Manual
4-23
Samsung Electronics
4.1.
7
Abnormal Image Printing and Defective Roller
If abnormal image prints periodically, check the parts shown below.
No
Roller
Abnormal image period
Kind of abnormal image
1
OPC Drum
75.5mm
:KLWHVSRW%ORFN6SRWV
2
Charge Roller
26.7mm
Block Spot and Periodic Band
3
Supply Roller
47.1mm
Periodic Band by little difference of density
4
Developing Roller
35.2mm
:KRUL]RQWDOEODFNEDQG
5
Transfer Roller
47mm
Ghost, Damaged Image by abnormal transfer
6
+HDW5ROOHU
77.8mm
Black Spots or Vertical Black Band
7-1
3UHVVXUH5ROOHUBVW
62.8mm
Blackground
7-2
3UHVVXUH5ROOHUBVW
37.7mm
Blackground
7-1
7-2