Brother International MFC 4350 Users Manual - English - Page 218

DIFFICULTY, SUGGESTIONS, Print Quality, Copy Quality

Page 218 highlights

204 C H A P T E R N I N E T E E N Copy Quality Difficulties Print Quality Difficulties DIFFICULTY SUGGESTIONS Vertical streaks appear in copies Sometimes you may see vertical streaks on your copies. Either the scanner or the primary corona wire for printing s dirty. Clean them both. (See pages 213 and 215.) Printouts are too dark or light Adjust the print conditions by setting the Print Density function. It has been factory set to the middle position. (See "Setting the Print Density"on page 46.) Printed pages contain white You may fix this by wiping the scanner windows with a stripes clean soft cloth. (See "Regular Maintenance" and "Cleaning the Drum Unit" on pages 213 and 215.) If you still see white stripes or faint images and the White Stripes or display shows CHANGE DRUM SOON, replace the Faint lmages drum unit with a new one. Printed pages are stained with toner or have vertical stripes Dark Stripes or Toner Stains Clean the MFC's interior and the primary corona wire of the toner cartridge. (See "Regular Maintenance" and "Cleaning the Drum Unit" on pages 214 and 215.) Make sure that the tab of the corona wire is at the home position. If after cleaning, you still see dark stripes or toner stains and the display shows CHANGE DRUM SOON, replace the drum unit with a new one. Printed pages have white spots in black text and graphic areas Make sure that you use paper that meets the specifications. Rough surface or thick media can cause the problem. If you still see white spots and the display shows CHANGE DRUM SOON, replace the drum unit with a new one. White Spots Toner scatters and stains the printed page Scattering Toner The whole page is printed black Black Page Nothing is printed on the the page White Page Adjust the print conditions by setting the Print Density function. Remove the drum unit and clean the MFC's interior. (See "Regular Maintenance", "Cleaning the Printer" and "Cleaning the Drum Unit" on pages 213 and 215.) Make sure that you use paper that meets specifications. (See page 18.) If you still have scattered toner and the display shows CHANGE DRUM SOON, replace the drum unit with a new one. Wipe the electric terminals referring to page 214. Also, do not use heat-sensitive paper as it will cause this problem. After cleaning, if the printed pages are still black and the display shows CHANGE DRUM SOON, replace the drum unit with a new one. Make sure that the toner cartridge is not empty. Wipe electric terminals referring to "Regular Maintenance", "Cleaning the Printer" and "Cleaning the Drum Unit" on pages 213 and 215. Make sure that a torn piece of paper does not remain on the scanner window.

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204
CHAPTER
NINETEEN
DIFFICULTY
SUGGESTIONS
Vertical streaks appear in
Sometimes you may see vertical streaks on your copies.
copies
Either the scanner or the primary corona wire for
printing s dirty.
Clean them both. (See pages 213 and
215.)
Printouts are too dark or
Adjust the print conditions by setting the Print Density
light
function.
It has been factory set to the middle position.
(See “Setting the Print Density”on page 46.)
Printed pages contain white
You may fix this by wiping the scanner windows with a
stripes
clean soft cloth.
(See “Regular Maintenance” and
“Cleaning the Drum Unit” on pages 213 and 215.)
If
you still see white stripes or faint images and the
display shows CHANGE DRUM SOON, replace the
drum unit with a new one.
Printed pages are stained
Clean the MFC’s interior and the primary corona wire
with toner or have
of the toner cartridge. (See “Regular Maintenance” and
vertical stripes
“Cleaning the Drum Unit” on pages 214 and 215.)
Make sure that the tab of the corona wire is at the home
position. If after cleaning, you still see dark stripes or
toner stains and the display shows CHANGE DRUM
SOON, replace the drum unit with a new one.
Printed pages have white
Make sure that you use paper that meets the
spots in black text and
specifications. Rough surface or thick media can cause
graphic areas
the problem.
If you still see white spots and the
display shows
CHANGE DRUM SOON,
replace the drum unit with a new one.
Toner scatters and stains
Adjust the print conditions by setting the Print Density
the printed page
function.
Remove the drum unit and clean the MFC's
interior. (See “Regular Maintenance”, “Cleaning the
Printer” and “Cleaning the Drum Unit” on pages 213
and 215.) Make sure that you use paper that meets
specifications. (See page 18.) If you still have scattered
toner and the display shows CHANGE DRUM SOON,
replace the drum unit with a new one.
The whole page is printed
Wipe the electric terminals referring to page 214. Also,
black
do not
use heat-sensitive paper as it will cause this
problem.
After cleaning, if the printed pages are still
black and the display shows CHANGE DRUM SOON,
replace the drum unit with a new one.
Nothing is printed on the
Make sure that the toner cartridge is not empty.
Wipe
the page
electric terminals referring to “Regular Maintenance”,
“Cleaning the Printer” and “Cleaning the Drum Unit”
on pages 213 and 215. Make sure that a torn piece of
paper does not remain on the scanner window.
Print Quality
Difficulties
Copy Quality
Difficulties
White Stripes or
Faint lmages
Dark Stripes or Toner Stains
White Spots
Scattering Toner
White Page
Black Page