Brother MFC-9420CN User Manual page 141

Examples of poor print quality
Toner scatter or toner stain
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
The colour of your printouts is not
what you expected
All one colour
Shade on the transparency
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Incorrect coloured edges
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Uneven density appears
periodically across the page
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Recommendation
■
Identify the colour causing the problem and replace that toner cartridge. (See
Replacing a toner cartridge on page C-29.)
■
Replace the OPC belt cartridge. (See Replacing the OPC belt cartridge
(OP-4CL) on page C-33.)
■
Check that the toner cartridges are installed properly.
■
Check that the toner cartridges are not empty. (See Toner empty message on
page C-29.)
■
Perform the calibration. (Menu/Set, 4, 4)
■
Adjust the colour by using the custom setting in the driver. Colours the
machine can print and colours you see on a monitor are different. The machine
may not be able to reproduce the colours on your monitor.
■
Check to make sure the recommended paper was used. (See Recommended
paper on page 2-1.)
Replace the OPC belt cartridge. (See Replacing the OPC belt cartridge (OP-4CL)
on page C-33.)
■
Change to the recommended type of transparency, and then check that the
problem is solved.
■
Check that the media type mode is selected properly.
■
Check that the OPC belt cartridge is installed properly.
■
Check that the transter belt cleaner is installed properly.
■
Replace the OPC belt cartridge. (See Replacing the OPC belt cartridge
(OP-4CL) on page C-33.)
■
Replace the transter belt cleaner. (See Replacing the transfer belt cleaner on
page C-38.)
■
Check that the toner cartridges are installed properly.
■
Check that the OPC belt cartridge is installed properly.
■
Check that the transter belt cleaner is installed properly.
■
Check that the back cover is closed properly.
■
Check that the fusing unit is installed properly.
■
Replace the OPC belt cartridge. (See Replacing the OPC belt cartridge
(OP-4CL) on page C-33.)
Troubleshooting and routine maintenance
C
C - 17