Brother HL-1230 EN - Manual (Page 99)

CHAPTER 6 TROUBLESHOOTING
6-13
Image Defect Samples 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
"Replacing the Drum Unit" in Chapter 5.
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 because conditions such as high
humidity may cause this situation to occur.
All black
• Clean the primary corona wire of the drum unit. See
"Cleaning"
in Chapter 5.
• The drum unit may be damaged. Install a new drum unit. See
"Replacing the Drum Unit" in Chapter 5.