Brother HL-8050N User Manual

5 - 7   TROUBLESHOOTING

Faded printouts

Is the media suitable?

Replace the media with a recommended 
size and type, and confirm that your printer 
driver settings are correct. 
See Suitable and Unsuitable Paper Types 
on page 2-1.

Is the paper damp?

Replace the paper. 
See Loading Paper and Printing on page 
2-9.

The toner cartridge is old or damaged.

Replace the toner cartridge.
See Replacing the Toner Cartridge 
(TN-1700) on page 6-1.

Is the printer driver Toner Save Mode 
active?

In the printer driver, deactivate the Toner 
Save Mode in the Print Quality setting of 
Advanced tab (Windows

®

), or the General 

dialog box (Macintosh

®

).

The power supply is defective.

Contact your dealer or Brother Customer 
Service.

Dirty spots are 
printed

Is the media suitable? Are you using 
preprinted or inkjet paper?

Replace the media with a recommended 
size and type, and confirm that your printer 
driver settings are correct. 
See Suitable and Unsuitable Paper Types 
on page 2-1.

The toner cartridge is old or damaged.

Replace the toner cartridge. 
See Replacing the Toner Cartridge 
(TN-1700) on page 6-1.

Vertical black lines

The toner cartridge, fuser unit or transfer 
roll cartridge is old or damaged.

Check the toner cartridge, fuser unit and 
transfer roll cartridge and replace them as 
necessary.
See Replacing the Toner Cartridge 
(TN-1700) on page 6-1.
See Replacing the Fuser Unit & Transfer 
Roll Cartridge (FP-8000) on page 6-5.

Recurring smudges

Dirt in the paper path.

Print several blank sheets.

The toner cartridge, fuser unit or transfer 
roll cartridge is old or damaged.

Check the toner cartridge, fuser unit and 
transfer roll cartridge and replace them as 
necessary.
See Replacing the Toner Cartridge 
(TN-1700) on page 6-1.
See Replacing the Fuser Unit & Transfer 
Roll Cartridge (FP-8000) on page 6-5.