MFC 4550/6550MC/7550MC

OP-US-5.0

TROUBLESHOOTINGPROCEDURES

Error Messages

Occasionally, you may have a problem with your MFC or telephone line. If this happens, your MFC usually identifies the problem and displays an error message. Referto the followinglistwhenyou seeanerrormessageon the display.

Errormessagesarelistedbelowinalphabeticalorder.

This means an overflow of the input data

B BUFFER ERRORbuffer. Press FF/Cont. Data that overflowed thebufferwillnotbeprinted.

Check the communication parameter settings such as handshake protocol on both your computer and MFC.

Iftheerroroccursagain,theinterfacehardware may be damaged, so consult with your dealer.

C

CHANGE DRUM

CHANGE TONER

You can clear a print quality problem by replacing the drum unit with a new one if the display shows CHANGE DRUM. The drum unitisattheendofitslife.

If the display shows CHANGE TONER and at the same time the Toner Empty LED on the controlpanelflashesonandoff,youcanstill print.Butthetonerisdepletedanditistelling you that the toner will soon run out. Order a new toner cartridge now.

CHANGE TONER

TONER EMPTY

CHECK PAPER

CHECK PAPER SIZE

Thetonerisusedupandprintingisnotpossible. Replace the toner cartridge with a new one. (See page 13-1~4)

Themachineisoutofpaperorthepaperisnot properly loaded in the multipurpose sheet feeder. Refill the paper or remove the paper andloaditagain.

Your Recording Paper Size setting may not be setcorrectlyfortherecordingpaperyouare using(seepage6-7).Whenyouseethiserror, the reduction ratio automatically will be changed to AUTO if you have used a fixed reductionratio(seepage6-8~9).

Maintenance

16-2

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Brother 7550MC, 6550MC warranty Error Messages, 16-2