Brother HL-4200CN Service Manual page 218

LCD Display
Ready to Print Need
Replacement Print Head Cart
Ready to Print
Need Maintenance CTD Sensor
No display
< Name of Fail>
Contents of Trouble
<Print head cartridge Life Warning>
Print head cartridge ASSY is near the end of its life.
<ERU Warning>
ADC sensor ASSY signal level below the specified value.
<IOT X Cassette Near Empty>
Paper level is low in the X cassette.
V-12
Action Reference
2.3.2
No action required.
See print head cartridge life
over FIP
CRU Warning:
2.8.7
No action required.
See CTD sensor dustiness
FIP
2.6.1
No action required.
2.6.2A
Tray1 paper near empty
2.6.2B
2.6.3
FIP, Tray2 paper near
empty FIP
See Tray3 paper near
empty FIP
BSD