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Brother MFC-B7720DN Service Manual

Brother MFC-B7720DN
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2-39
Confidential
Replace Toner -
Dot count or develop roller
counter of the toner cartridge in
models without toner box has
reached the upper limit in the
toner stop mode.
4C01 2-52
The amount of toner supplied of
the toner box has reached the
upper limit.
4C06 2-52
Scan Unable Document is too
long for 2-sided
scanning. Press
Stop[x].
The document scanning
position sensor detected that
the document length was 400
mm or longer and could not be
fed to ADF (double-side
restoration).
BF00 2-70
Remove the original
document.
Turn the power off,
then on again.
Image processing was not
completed correctly because
the number of pixels required
for image processing is
insufficient in the scanned
second side data.
A000 2-65
Image processing cannot be
completed correctly because
the number of pixels required
for image processing is
insufficient in the scanned first
side data.
AD00 2-67
Scan Unable
A9
Turn the power off
and then back on
again.
A scanning error occurred while
processing the scanned image.
A900 2-67
Scan Unable
AF
Turn the power off
and then back on
again.
Home position is still being
detected even after the first side
CIS unit was moved.
AF00 2-68
Scanner Error
BB
-
A white level not within the
standard was scanned when
function code 55 was executed.
BB00 2-69
A black level not within the
standard was scanned when
function code 55 was executed.
BD00 2-69
Self-
Diagnostic
Will automatically
restart within 15
minutes.
Some fuser unit errors occurred
at power-ON or upon recovery
from sleep mode.
6901 2-57
Will Automatically
Restart within 15
minutes.
After the error was detected at
the fuser unit, power was turned
ON again and the error is being
checked. (If power is turned
OFF and ON after error code
6901 occurred, this code is
displayed for about 15 minutes.)
6902 2-57
Error message
Description
Error
codes
Refer
to:
Upper line Lower line

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Brother MFC-B7720DN Specifications

General IconGeneral
BrandBrother
ModelMFC-B7720DN
CategoryAll in One Printer
LanguageEnglish

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