Troubleshooting and routine maintenance c - 17 – Brother MFC-9420CN User Manual

Page 142

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Troubleshooting and routine maintenance

C - 17

Colored streaks or bands down the
page

■

Identify the color 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.)

Colored lines across the page

■

Clean the registration roller, the paper pick-up roller, the transfer roller guide
and the exit roller. (See Cleaning to prevent paper jams on page C-22.)

■

If the problem continues, identify the color and replace that toner cartridge.
(See Replacing a toner cartridge on page C-29.)

White spots or hollow print

■

Change the paper to freshly unpacked paper.

■

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

■

Check that the room temperature is higher than 50 °F (10 °C)

Completely blank or some colors
are missing

■

Check that the back cover is closed properly.

■

Check that the front cover is closed properly.

■

Identify the missing color and check that the toner cartridge is installed
properly.

■

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.)

Colored spots or Toner stain

■

Identify the color causing the problem and replace the toner cartridge.
(See Replacing a toner cartridge on page C-29.)

Examples of poor print quality

Recommendation

ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.

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