Brother HL-1850 Service Manual page 252

CHAPTER 6 TROUBLESHOOTING
No. Display
C
1st
Black square
T
2nd
Black square
P
3rd
Black square
E
4th
Black square
D
5th
Black square
S
6th
Black square
M
7th
Black square
R
8th
Black square
F
9th
Black square
G
10th
Black square
L
11th
Black square
2
12th
Black square
F
13th
Black square
R
14th
Black square
E
15th
Black square
16th Not used
Name of Sensor
Cover sensor
Toner sensor
Cassette sensor
Paper empty sensor
DX tray sensor
DX lever sensor
MP sensor
DX cover sensor
The fixing unit cover
sensor
Lower tray unit
registration sensor
Lower tray unit paper
empty sensor
Lower tray unit sensor
Front registration
sensor
Rear registration
sensor
Paper eject sensor
6-68
Status
ON: The front cover is open.
OFF: The front cover is closed.
ON: The toner cartridge is installed.
OFF: No toner cartridge is installed.
ON: No paper cassette is installed.
OFF: The paper cassette is installed.
ON: Paper is detected.
OFF: No paper is detected.
ON: No DX tray is installed.
OFF: The DX tray is installed.
ON: A4 size paper is installed.
OFF: Letter size paper is installed.
ON: Paper is detected.
OFF: No paper is detected.
ON: DX cover is open.
OFF: DX cover is closed.
ON: The fixing unit cover is open.
OFF: The fixing unit cover is closed.
ON: Paper is detected.
OFF: No paper is detected.
ON: Paper is detected.
OFF: No paper is detected.
ON: No lower tray unit is installed.
OFF: The lower tray unit is installed.
ON: Paper is detected.
OFF: No paper is detected.
ON: Paper is detected.
OFF: No paper is detected.
ON: Paper is detected.
OFF: No paper is detected.