Brother HL-4000CN User Manual
Page 116
6-8
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Symptom Possible
Cause
Action
Is the media suitable?
Replace the media with a
recommend size and type, and
confirm that your printer driver
settings are correct.
See 4.1 “Suitable and Unsuitable
Paper Types”
Is the paper damp?
Replace the paper.
See 4.2 “Loading Paper”
The print head cartridge is old or
damaged.
Replace the print head cartridge.
Reference
8.2.2 “Replacing the Print Head
Cartridge”
Is the printer driver toner save
function active?
In the printer driver, deactivate the
toner save function on the “Graphics”
tab (Windows), or the “General”
dialog box (Macintosh).
See “Help”
Faded printouts
The power supply is defective.
Contact your dealer or Brother
authorized service representative.
Is the media suitable? Are you using
preprinted or inkjet paper?
Replace the media with a
recommend size and type, and
confirm that your printer driver
settings are correct.
See 4.1 “Suitable and Unsuitable
Paper Types”
Dirty spots are printed
The print head cartridge is old or
damaged.
Replace the print head cartridge.
See 8.2.2 “Replacing the Print Head
Cartridge”
Vertical black lines
The print head cartridge or transfer
roll cartridge is old or damaged.
Check the print head cartridge and
transfer roll cartridge and replace
them as necessary.
See 8.2.2 “Replacing the Print Head
Cartridge”
See 8.3.2 “Replacing the Transfer
Roll Cartridge”
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