Brother HL-1240 - Manual (Page 96)

4-22
Image defect examples Recommendation
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Black Horizontal repetitive
defects
Toner scatters and stains the
printed page.
•
The drum unit may be damaged. Install a new drum unit. See
"How to replace the Drum unit" in Chapter 3.
•
Make sure that you use paper that meets specifications. See
“What kind of paper can I use” in Chapter 1.
✒ Note
•
If you use label sheets for laser printers, the glue from the sheets
may sometimes stick to the OPC drum surface. Clean the drum
unit.
See the previous page.
•
Do not use paper which has clips or staples because they will
scratch the surface of the drum.
•
If the unpacked drum unit is subject to excessive direct sunlight
or room light, the unit may be damaged.
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
White horizontal stripes
•
Make sure that you use paper that meets the specifications. A
rough surfaced paper or thick media can cause the problem.
•
Make sure that you select the appropriate media type in the
printer driver.
•
The problem may disappear by itself. Try printing multiple
pages to clear this problem especially if the printer has not been
used for a long time.
•
The drum unit may be damaged. Install a new drum unit. See
"How to replace the Drum unit" in Chapter 3.
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Horizontal Lines
•
Clean the printer interior and the primary corona wire in the
drum unit.
See "How to clean the printer" in Chapter 3.
•
The drum unit may be damaged. Install a new drum unit. See
"How to replace the Drum unit" in Chapter 3.
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Black Vertical lines
Printed pages are stained with
toner or have vertical stripes.
•
Clean the primary corona wire of the drum unit. See "How to
clean the printer interior and Drum unit".
•
Make sure that the primary corona wire cleaner is at the home
position.
•
The drum unit may be damaged. Install a new drum unit. See
"How to replace the Drum unit" in Chapter 3.
•
The toner cartridge may be damaged. Install a new toner
cartridge.
See "How to replace the Toner cartridge" in Chapter
3. Make sure that a torn piece of paper is not inside the printer
covering the scanner window.
•
The fixing unit may be smudged. Call customer support.