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Brother MFC-9420CN User Manual

Page 144

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Troubleshooting and routine maintenance

C - 19

C

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Check that the toner cartridges are installed properly.

Check that the OPC belt cartridge is installed properly.

Identify the color causing the problem and replace the 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
.)

Wrinkle

Change to a recommended type of paper, and then check that the problem is
solved. (See Recommended paper on page 2-1.)

Check that the back cover is closed properly.

Check that the transfer roller is installed properly.

Check that the fusing unit is installed properly.

Replace the fusing unit. (See Replacing the fusing unit on page C-35.)

Mixed color image

Check that the front cover is closed properly.

Check that the toner cartridges are installed properly.

Check that the transfer roller is installed properly.

Replace the toner cartridges. (See Replacing a toner cartridge on page C-29.)

Insufficient gloss

Check that the recommended paper is being used. (See Recommended paper on
page 2-1.
)

Offset image

Check that the recommended paper is being used. (See Recommended paper on
page 2-1.
)

Poor fixing

Check that the recommended paper is used. (See Recommended paper on
page 2-1.
)

Check that the media type mode is selected properly.

Check that the release lever of the fusing unit is set properly.

Replace the fusing unit. (See Replacing the fusing unit on page C-35.)

Poor fixing when printed on thick
paper

Set the machine to thick paper mode through the control panel or the printer driver.
(See the Software User’s Guide on the CD-ROM.)

Examples of poor print quality

Recommendation

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