Brother FAX 3750, FAX 2750 manual Copy Quality Difficulties Print Quality

T R O U B L E S H O O T I N G A N D M A I N T E N A N C E 99

Copy Quality

Difficulties

Print Quality

Difficulties (Print Operations are Available with Software Option)

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
	is dirty. Clean them both. (See pages 109 and 111.)
Printouts are too dark or	Adjust the print conditions by setting the Print Density light
too light.	function. It has been factory set to the middle position. See
	“Setting the Print Density” on page 37.
Printed pages contain white	You may fix this by wiping the scanner windows with a
stripes.	clean soft cloth. (See “Cleaning the Document Scanner” on p. 109
	and “Cleaning the Drum Unit” on page 111.) If you still see
	white stripes or faint images and the display shows CHANGE
White Stripes or	DRUM SOON, replace the drum unit with a new one.
Faint lmages
Printed pages are stained	Clean the fax machine's interior and the primary corona wire of the
with toner or have	toner cartridge. See “Regular Maintenance” and “Cleaning
vertical stripes.	the Drum Unit” on pages 109–111. 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.
Dark Stripes or Toner Stains
Printed pages have white	Make sure that you use paper that meets the specifications. spots
in black text and	Rough surface or thick media can cause the problem. If you
graphic areas.	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	Adjust the print conditions by setting the Print Density
the printed page.	function. Remove the drum unit and clean the fax machine’s
	interior. See “Regular Maintenance”, “Cleaning the Printer” and
	“Cleaning the Drum Unit” on pages 109–111. Make sure that you
	use paper that meets specifications. See page 16. If you still have
Scattering Toner	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 110. Also, do
black.	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
Black Page	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 109–111.
	Make sure that a torn piece of paper does not remain on the
White page	scanner window.