Brother MFC-7360N User Manual page 133

Examples of poor print quality
94 mm
(3.71 in.)
94 mm
(3.71 in.)
White Spots on black text and
graphics at 94 mm (3.71 in.)
intervals
94 mm
(3.71 in.)
94 mm
(3.71 in.)
Black Spots at 94 mm (3.71 in.)
intervals
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Black toner marks across the
page
Recommendation
 Make ten copies of a blank, white sheet of paper. (See How to
copy on page 48.) If the problem is not solved, the drum unit may
have glue from a label stuck on the OPC drum surface. Clean the
drum unit. (See Cleaning the drum unit in Appendix A of the
Advanced User's Guide.)
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 59.)
 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 Cleaning the drum unit in Appendix A of the Advanced
User's Guide.)
 Make sure that you use paper that meets our specifications. (See
Acceptable paper and other print media on page 17.)
 Do not use paper that has clips or staples because they will
scratch the surface of the drum.
If the unpacked drum unit is in direct sunlight or room light, the unit

may be damaged.
 The toner cartridge may be damaged. Put in a new toner
cartridge. (See Replacing the toner cartridge on page 53.)
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 59.)
Troubleshooting
B
95