Brother FAX4100 Service Manual page 137

Messages on the LCD
(In the 1st row)
WARMING UP
(In the 2nd row)
WAIT FOR A WHILE
(In the 1st row)
MACHINE ERROR XX
(In the 2nd row)
Unplug machine, then call
Brother.
CHANGE DRUM SOON
PLS OPEN COVER
(In the 1st row)
PAPER JAM
(In the 2nd row)
Open cover, then remove
jammed paper.
(In the 1st row)
PLS CLEAN DRUM
(In the 2nd row)
Clean corona wire of drum
unit.
The controller, which monitors the internal resistance of the in-
casing temperature sensor (thermistor) and heater thermistor,
has detected that the temperature inside the equipment or the
heater temperature has not reached the specified level. If either
temperature does not reach the preset level, recording is not
possible.
"XX" indicates an error code. Refer to [ 2 ] on pages VI-5 and
VI-6.
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.)
To display the relating detailed error code, use maintenance-
mode function code 82. (Refer to Chapter V, Section 3.14.)
If this message appears, open and close the front cover. The
message may disappear if opening/closing the front cover
removes the error. If the error persists, the "MACHINE ERROR
XX" will appear.
Paper jam
(1) The registration sensor detects no paper within the specified
time length after the start of paper pulling-in.
(2) The registration sensor has been ON for less than the
specified time length (paper of approx. 3.15" long) or for
more than the specified time length (paper of approx. 16"
long).
(3) When the machine is switched on or the front cover is
opened and then closed, the registration sensor or paper
ejection sensor is ON.
(4) The paper ejection sensor sticks to ON.
(5) The paper ejection sensor does not come ON within the
specified time length after the registration sensor has come
ON.
(6) The paper ejection sensor is kept ON after the specified time
length although the registration sensor has come ON.
The toner sensor detects abnormal discharge that could be
caused by the dirtied corona wire of the drum unit.
VI - 3
Probable Cause