Brother International MFC-7050C Service Manual - Page 118

Error, Indication

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1. ERROR INDICATION To help the user or the service personnel promptly locate the cause of a problem (if any), the facsimile equipment incorporates the self-diagnostic functions which display error messages for equipment errors. If an equipment error occurs, the facsimile equipment emits an audible alarm (continuous beeping) for approximately 4 seconds and shows the error message on the LCD. For the error messages, see below. Error messages on the LCD Messages on the LCD CHECK PAPER PRINTER JAM COVER OPEN DOCUMENT JAM Probable Cause The registration sensor detects no recording paper loaded in the ASF. The registration sensor detects that a paper jam has occurred. The cover sensor detects that the top cover is not closed. ■ Document jam (1) The document length exceeds the limitation (90 cm). (Both the document front and rear sensors stay ON even after the document has been fed by the registered length.) (2) The document rear sensor detects no trailing edge of a document after the document has been fed by 400 cm. (The document rear sensor stays ON even after the document has been fed when the document front and rear sensors were OFF and ON, respectively.) ■ Document loading error (1) The document rear sensor detects no leading edge of a document within 10 seconds from the start of document loading operation. (The document rear sensor stays OFF even after the document has been fed when the document front sensor was ON.) (2) The loaded document is too short. (Since the document is shorter than the distance between the document front and rear sensors, the document front sensor is turned OFF before the document rear sensor is turned ON.) VI- 1

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1.
ERROR
INDICATION
To
help
the
user
or
the
service
personnel
promptly
locate
the
cause
of
a
problem
(if
any),
the
facsimile
equipment
incorporates
the
self
-diagnostic
functions
which
display
error
messages
for
equipment
errors.
If
an
equipment
error
occurs,
the
facsimile
equipment
emits
an
audible
alarm
(continuous
beeping)
for
approximately
4
seconds
and
shows
the
error
message
on
the
LCD.
For
the
error
messages,
see
below.
Error
messages
on
the
LCD
Messages
on
the
LCD
Probable
Cause
CHECK
PAPER
The
registration
sensor
detects
no
recording
paper
loaded
in
the
ASF.
PRINTER
JAM
The
registration
sensor
detects
that
a
paper
jam
has
occurred.
COVER
OPEN
The
cover
sensor
detects
that
the
top
cover
is
not
closed.
DOCUMENT
JAM
■
Document
jam
(1)
The
document
length
exceeds
the
limitation
(90
cm).
(Both
the
document
front
and
rear
sensors
stay
ON
even
after
the
document
has
been
fed
by
the
registered
length.)
(2)
The
document
rear
sensor
detects
no
trailing
edge
of
a
document
after
the
document
has
been
fed
by
400
cm.
(The
document
rear
sensor
stays
ON
even
after
the
document
has
been
fed
when
the
document
front
and
rear
sensors
were
OFF
and
ON,
respectively.)
■
Document
loading
error
(1)
The
document
rear
sensor
detects
no
leading
edge
of
a
document
within
10
seconds
from
the
start
of
document
loading
operation.
(The
document
rear
sensor
stays
OFF
even
after
the
document
has
been
fed
when
the
document
front
sensor
was
ON.)
(2)
The
loaded
document
is
too
short.
(Since
the
document
is
shorter
than
the
distance
between
the
document
front
and
rear
sensors,
the
document
front
sensor
is
turned
OFF
before
the
document
rear
sensor
is
turned
ON.)
VI-
1