11 Troubleshooting and routine maintenance; Troubleshooting; Error messages- Page 88

Brother MFC-7420 User's Guide

2014 Dodge Charger SRT Owner Manual

Table of Contents

USER'S GUIDE MFC-7420/MFC-7820N
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11 - 1

11

Troubleshooting 

Error messages 

As with any sophisticated office product, errors may occur. If this happens, your MFC identifies 
the problem and displays an error message. The most common error messages are shown below.

You can correct most problems by yourself. If you need more help, the Brother Solutions Center 
offers latest FAQs and troubleshooting tips.

Visit us at http://solutions.brother.com.

Troubleshooting and routine 
maintenance

IMPORTANT

For technical help, you must call the country where you bought the MFC. Calls must be made 

from within

 that country.

ERROR MESSAGES

ERROR MESSAGE

CAUSE

ACTION

Back Cover Open

The back cover is not completely 
closed.

Close the back cover of the MFC.

Change Drum Soon

The drum unit is near the end of its life

Use the drum unit until you have a print quality 
problem; then replace the drum unit with a new one.

See 

Replacing the drum unit (DR-350)

 on page 11-28.

Comm.Error

Poor phone line quality caused a 
communication error.

Send the fax again or connect the MFC to another 
telephone line. If the problem continues, call the 
telephone company and ask them to check your phone 
line.

Connection Fail

You tried to poll a fax machine that is 
not in Polled Waiting mode.

Check the other fax machineā€™s polling setup.

Cooling Down

Wait for a while

The temperature of the drum unit or 
toner cartridge is too hot. The MFC will 
pause its current print job and go into 
cooling down mode. During the cooling 
down mode, you will hear the cooling 
fan running while the display on the 
MFC shows 

Cooling

 

Down

, and 

Wait for a while

.

You must wait 20 minutes for it to cool.

Cover is Open

The front cover is not completely 
closed. 

Close the front cover of the MFC.

Data Remaining

Print data is left in the MFCā€™s memory.

Re-start printing from your computer.

Print data is left in the MFCā€™s memory. 
The USB or Parallel cable was 
unplugged while the computer was 
sending the data to the MFC.

Press 

Job Cancel

. The MFC will cancel the job and 

clear it from the memory.

Try to print again.

Disconnected

The other person or other personā€™s fax 
machine stopped the call.

Try to send or receive again.

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  • 28. Comm.

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