Toner Save; Examples of poor print ; a b c d e- Page 117

Troubleshooting and routine maintenance

103

B

Faint

„

Check the machine’s environment. Conditions such as humidity, high 
temperatures, and so on, may cause this print fault. (See 

Choosing a 

location

 on page 82.)

„

If the whole page is too light, Toner Save mode may be on. Turn off 

Toner Save

 mode in the machine menu settings or 

Toner Save

mode in the printer 

Properties

 of the driver. (See 

Toner save

on page 22 or 

Advanced tab in the Software User’s Guide on the CD-

ROM

.)

„

Clean the scanner window and the corona wire of the drum unit. (See 

Cleaning the laser scanner window

 on page 120 and 

Cleaning the 

corona wire

 on page 122.)

„

The toner cartridge may be damaged. Put in a new toner cartridge. 
(See 

Replacing a toner cartridge

 on page 126.)

„

The drum unit may be damaged. Put in a new drum unit. (See 

Replacing the drum unit

 on page 130.)

Toner specks

„

Make sure that you use paper that meets our specifications. Rough-
surfaced paper may cause the problem. (See 

Acceptable paper and 

other print media

 on page 14.)

„

Clean the corona wire and the drum unit. (See 

Cleaning the corona 

wire

 on page 122 and 

Cleaning the drum unit

 on page 123.)

„

The drum unit may be damaged. Put in a new drum unit. (See 

Replacing the drum unit

 on page 130.)

„

The fuser unit may be contaminated. Call Brother Customer Service.

All black

„

Clean the corona wire inside the drum unit by sliding the green tab. 
Be sure to return the green tab to the home position (

a

). (See 

Cleaning the corona wire

 on page 122.)

„

The drum unit may be damaged. Put in a new drum unit. (See 

Replacing the drum unit

 on page 130.)

„

The fuser unit may be contaminated. Call Brother Customer Service.

Examples of poor print 
quality

Recommendation

ABCDEFGH
abcdefghijk

A B C D
a b c d e
0 1 2 3 4

CDEF

defg

B C

b c d

2 3

ABCDEFGH
abcdefghijk

A B C D
a b c d e
0 1 2 3 4