Brother HL-1240 - Manual (Page 93)

CHAPTER 4 TROUBLESHOOTING
4-19
Image defect examples Recommendation
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Toner specks
•
Make sure that you use paper that meets the specifications. A
rough surfaced paper may cause the problem.
See “What kind
of paper can I use” in Chapter 1.
•
The drum unit may be damaged. Install a new drum unit. See
"How to replace the Drum unit" in Chapter 3.
Hollow print
•
Make sure that you use paper that meets the specifications.
See “What kind of paper can I use” in Chapter 1.
•
Select the ‘Thick paper mode’ in the printer driver, or use
thinner paper than you are currently using.
•
Check the printer’s environment as conditions such as high
humidity may cause this situation to occur.
All black
•
Clean the primary corona wire of the drum unit. See "How to
clean the printer interior and Drum unit".
•
The drum unit may be damaged. Install a new drum unit. See
"How to replace the Drum unit" in Chapter 3.