I Mage Quality Problems - Dell 2145cn Service Manual

4.2.2 I mage quality problems

1) Vertical Black Line and Band
1. Straight thin black vertical lines are shown in the print-out.
Description
2. Dark black vertical bands are shown in the print-out.
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
transfer Belt(PTB) or Contaminated
Alignment and Troubleshooting
3. Damaged paper
on PTB.
4. Contaminated on
paper charge roller.
4-49
Replace the toner Cartridge
and test again.
Replace the toner Cartridge
and test again.
Replace the PTB unit and test again.
Replace the PTB unit or Cleaning the
paper charge roller.