Brother International HL 1850 Service Manual - Page 234

CHAPTER 6 TROUBLESHOOTING No. Display Name of Sensor C 1st Cover sensor Black square T 2nd Black square Toner sensor P 3rd Black square Cassette sensor E 4th Paper empty sensor Black square D 5th Black square DX tray sensor S 6th DX lever sensor Black square M 7th Black square MP sensor R. 8th DX cover sensor Black square 9th F Black square The fixing unit cover sensor G 10th - Black square Lower tray unit registration sensor 11th 12th L Black square 2 Black square Lower tray unit paper empty sensor Lower tray unit sensor 13th 14th 15th 16th F Black square R Black square E Black square Not used Front registration sensor Rear registration sensor Paper eject sensor 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. .O...N..:...A...4..s..i.z..e...p.a..p.e..r..i.s...i.n.s..t.a..l.l.e..d 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. 6-68