Brother HL-4000CN Service Manual page 223

LCD Display
No display
Ready to Print
ServiceCallJJXXXXXXX
< Name of Fail>
Contents of Trouble
<IOT X Cassette Near Empty>
Paper level is low in the X cassette.
<ERU Warning>
Fuser ASSY is near the end of its life.
V-13
Action Reference
BSD
No action required.
Tray1 paper near empty
FIP, Tray2 paper near
empty FIP
See Tray3 paper near
empty FIP
No action required.
See fuser life over FIP
ERU Warning: ＸＸＸＸＸＸＸ
indicates ERU No.
1:Fuser unit