Brother Copier/Printer MFC-9970CDW - Manual (Page 115)

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Error and maintenance messages
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As with any sophisticated office product, errors may occur and consumable items may need to be
replaced. If this happens, your machine identifies the error or required routine maintenance and
shows the appropriate message. The most common error and maintenance messages are shown
below.
You can correct most errors and perform routine maintenance by yourself. If you need more help,
the Brother Solutions Center offers the latest FAQs and troubleshooting tips:
Visit us at http://solutions.brother.com/.
Troubleshooting
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Error Message Cause Action
Access Denied
The function you want to use is
restricted by Secure Function
Lock. Contact your administrator to check your
Secure Function Lock Settings.
Access Error
The device is removed from the
USB direct interface while the
data is processing. Press Stop/Exit. Reinsert the device and try
to print with Direct Print.
Calibration
failed.
Calibration failed.  Turn off the machine. Wait a few seconds,
then turn it on again.
 Put in a new drum unit. (See Replacing
the drum unit on page 80.)
 Put in a new belt unit. (See Replacing the
belt unit on page 86.)
 Put in a new waste toner box. (See
Replacing the waste toner box
on page 92.)
 If the problem continues, call Brother
Customer Service.
Cartridge Error
Put the Black (K)
Toner Cartridge
back in.
1
1
The toner cartridge
color with the problem
is shown in the
message.
The toner cartridge is not
installed properly. Pull out the drum unit and remove the toner
cartridge for the color that is indicated on the
LCD, then re-install the toner cartridge in the
drum unit. Put the drum unit back into the
machine again.
Comm.Error
Poor telephone line quality
caused a communication error. Send the fax again or connect the machine to
another telephone line. If the problem
continues, call the telephone company and
ask them to check your telephone line.