| Problem |
Cause |
Solution |
How common* |
Comments |
| Vertical black lines |
Contaminated fuser entrance guide |
Clean the guide |
5 |
|
| Vertical black lines |
Defective toner cartridge. |
Replace the toner cartridge. |
9 |
By far the most common cause. |
| vertical black lines |
This can be a "video line" generated
by a defective formatter. |
Replace formatter. |
|
|
| Vertical black lines |
Worn fuser film |
1. Set the fuser to a lower temperature mode.
2. Replace the fuser. Note To prevent the print-quality problem, reduce
printing on large volumes of narrow media, such as envelopes. Instead,
alternate smaller volumes of narrow media with full-page printing
jobs. |
|
|
