Brother Laser MFC-4800, Service Manual

Page: 112 / 205

6-1
6.1 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 and communications errors.
For the communications errors, the equipment also prints out the transmission verification report
and the communications list.
6.1.1 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
[ 1 ] below.
To display detailed error information, use the maintenance-mode function code 82 described in
CHAPTER 5, Subsection 5.3.14 (that is, make the equipment enter the maintenance mode and then
press the
8 and 2 keys). Following the MACHINE ERROR, one of the error codes listed in [ 2 ]
will appear on the LCD.
[ 1 ] Error messages on the LCD
Messages on the LCD Probable Cause
CHANGE DRUM SOON The service life of the drum unit will expire soon. This message
appears for one minute.
(You can turn this message indication on or off by the
maintenance-mode function code 10, WSW31, selector 8. Refer
to Appendix 2.)
CHECK ORIGINAL
Remove original, and then
press STOP KEY.
(These messages appear
alternately.)
(See NOTE below.)
or
CHECK DOCUMENT
Remove document, then
press STOP KEY.
(These messages appear
alternately.)
Document jam
(1) The document length exceeds the limitation (400 or 90 cm)
registered by firmware switch WSW16. (Refer to Appendix
2.)
(Both the document front and rear sensors stay ON 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.)
NOTE: This message appears in North American models.