Brother HL-2400C Service Manual page 149

41 BD CHECK
Laser beam position and laser power can be checked.
Procedure
Description of Procedures
1) Press the Continue button after selecting
screen (a) "BD CHECK".
2) The scanner motor scans the laser beam as
it is rotating. If the scanning position of the
laser beam is normal, "GOOD" is displayed
on the LCD, otherwise "FAIL". (b) or (c)
Scanner motor automatically stops rotating
after 60 seconds.
3) Press the Font button to exit the BD CHECK
mode.
42 FU CHECK
Availability of oil in the fusing unit can be checked.
Procedure
Description of Procedures
1) Press the Continue button after selecting
screen (a) "FU CHECK".
2) The fusing unit starts the heat-up process,
and checks the availability of fuser oil. If oil is
available in the fusing unit, "GOOD" is
displayed in the LCD, otherwise, "FAIL".
3) Press the Font button to exit the FU CHECK
mode.
(a) → (b)
a)
b)
(d)
c)
(b) → (d)
d)
(a)
a)
b)
(b)
(c)
c)
V-28
LCD Message
39 FACTORY MODE
BD CHECK
41 BD CHECK
GOOD
41 BD CHECK
FAIL
39 FACTORY MODE
DP CHECK
LCD Message
39 FACTORY MODE
FU CHECK
43 FU CHECK
OIL:GOOD
39 FACTORY MODE
DP CHECK