Brother FAX-2840 Basic User's Manual page 101

Examples of poor print quality
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Gray background
Ghost
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Toner specks
Recommendation
 Make sure that you use paper that meets our specifications. (See
Acceptable paper and other print media uu page 16.)
 Check the machine's environment. Conditions such as high
temperatures and high humidity can increase the amount of
background shading. (See Product Safety Guide: Choosing a
location.)
 Clean the drum surface. (See Advanced User's Guide: Cleaning
the drum unit.)
 Put in a new toner cartridge. (See Replacing the toner cartridge
uu page 55.)
 Put in a new drum unit. (See Replacing the drum unit
uu page 62.)
 Make sure that you use paper that meets our specifications.
Rough-surfaced paper or thick print media may cause this
problem. (See Acceptable paper and other print media
uu page 16.)
 Make sure that you choose the appropriate media type in the
printer driver (for MFC-7290) or in the machine's Paper Type
menu setting. (See Acceptable paper and other print media
uu page 16 and (for MFC-7290) Software User's Guide: Basic
tab.)
 (For MFC-7290)
Choose Reduce Ghosting mode in the printer driver. (See
Software User's Guide: Improve Print Output.)
 Put in a new toner cartridge. (See Replacing the toner cartridge
uu page 55.)
 Clean the drum surface. (See Advanced User's Guide: Cleaning
the drum unit.)
 Put in a new drum unit. (See Replacing the drum unit
uu page 62.)
 The fuser unit may be contaminated. Call Brother Customer
Service.
 Make sure that you use paper that meets our specifications.
Rough-surfaced paper may cause the problem. (See Acceptable
paper and other print media uu page 16.)
 Clean the corona wire and the drum unit. (See Cleaning the
corona wire uu page 60 and Advanced User's Guide: Cleaning
the drum unit.)
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit uu page 62.)
 The fuser unit may be contaminated. Call Brother Customer
Service.
Troubleshooting
93
B