Brother HL-4000CN Service Manual page 218

LCD Display
Reinsert Xxxxx
Toner (X)
Reinsert
Transfer Roll
Set Print Head
Cartridge
Replace Xxxxx
Toner (X)
< Name of Fail>
Contents of Trouble
<IOT X Toner Detached>
Toner cartridge switch ASSY detected that the toner cartridge is not
mounted.
<IOT transfer roll cartridge Detached>
Detected that the transfer roll cartridge unit ASSY is not mounted.
<IOT print head cartridge E Detached>
Detected that the print head cartridge ASSY is not mounted.
<IOT X Toner Empty>
Toner empty detected.
V-8
Action Reference
BSD
Insert toner cartridge. 2.8.7
2.8.8
See toner cartridge
detached FIP.
Xxxxx indicates Yellow
toner (Y), Cyan toner (C),
Magenta toner (M) or Black
toner (K).
Insert transfer roll cartridge 2.8.7
2.8.8
unit ASSY.
See transfer roll cartridge
detached FIP
Insert print head cartridge 2.3.2
2.3.3
ASSY.
See print head cartridge
detached FIP
Replace toner cartridge. 2.8.5
2.8.8
See Yellow toner empty
FIP, Magenta toner empty
FIP, Cyan toner empty FIP
or Black toner empty FIP
Xxxxx indicates Yellow
toner (Y), Cyan toner (C),
Magenta toner (M) or Black
toner (K).