Brother MFC-P2000 - B/W Laser Printer Service Manual page 226

USER'S GUIDE
Service Calls for the Printing Function
Service Call
Drum
Alarm
Ready
Data
Service Call
Drum
Alarm
Ready
Data
Service Call
Drum
Alarm
Ready
Data
Service Call
Drum
Alarm
Ready
Data
7-4
If an unrecoverable error occurs, the machine indicates the need for a
service call by lighting all the lamps and then the following combination
of lamps alternately:
Fuser Laser BD
malfunction malfunction
D-RAM error
Service D
NV-RAM CPU Runtime
error error
If you see any of these service call indications, turn off the power
switch, wait a few seconds and then turn it on again and try to print again.
If you cannot clear the error and see the same service call indication after
turning on the machine, consult your dealer or our authorized service
representative. Report the error status and situation referring to the above
table.
Note
Be sure that the top cover and the main controller board are firmly
installed.
Scanner
malfunction
Service A Service B
Service E0 Service E1
ROM error
Service C
Service P
ON OFF