| Problem | Possible Cause | Solution |
| Toner smear |
Failing toner cartridge
|
Do halfway test to isolate the problem. Replace toner cartridge
|
| Toner smear |
Fuser assembly has toner buildup, or is failing.
|
Do halfway test to isolate the problem. Run some more pages to try to clear the toner buildup. If needed, replace fuser
|
| Toner smear |
Toner spill contamination in the printer |
1. Print a few pages to see if the problem corrects itself. Clean the inside of the printer or use the printer's cleaning page. |
| Toner smear |
Wrong fuser setting for paper type |
From the paper-handling menu on the Control Panel, change the fuser mode setting or choose another paper type from the printer driver. |
| Toner smear |
Defective DC controller. (DC controller regulates fuser temperature). |
If a replacement fuser doesn't solve the problem, replace DC controller PCA. |
| Toner smear |
Paper type may be unusable (too smooth, too thick, too rough) |
Try a different paper type |
