User`s guide

Improving Print Quality
5-33
Troubleshooting Chapter 5
White lines The toner cartridge
may be defective.
Change the cartridges and/
or the transfer belt unit.
• See Toner Cartridge
+p. 4-1
• See Drum Cartridge
+p. 4-11
• See Image Transfer Belt
Unit +p. 4-31
The drum cartridge
may be defective.
The image transfer
belt unit may be
defective.
The image transfer
roller unit requires
replacement.
Change the image transfer
roller unit.+p. 4-23
Black (or color)
stripes
The printer’s internal
paper path is dirty.
Run several prints to flush
out the debris.
The toner cartridge
may be defective.
Change the cartridges and/
or the transfer belt unit.
• See Toner Cartridge
+p. 4-1
• See Drum Cartridge
+p. 4-11
• See Image Transfer Belt
Unit +p. 4-31
The drum cartridge
may be defective.
The image transfer
belt unit may be
defective.
The image transfer
roller unit requires
replacement.
Change the image transfer
roller unit.+p. 4-23
The oiling roller
requires replacement.
Change the oiling roller.
+p. 4-19
Soiled back side The printer’s internal
paper path is dirty.
Run several prints to flush
out the debris.
The oiling roller
requires replacement.
Change the oiling roller.
+p. 4-19
Symptom Cause Action