Brother HL-1000 - Manual (Page 58)

USER’S GUIDE
6-4
Service Calls
If an unrecoverable error occurs, the printer indicates the need for a
service call by lighting
all the lamps and then the following combination
of lamps alternately:
Service Call Fuser
malfunction
Laser BD
malfunction Scanner
malfunction ROM error
Drum ● ❍ ● ❍
Alarm ❍ ● ● ❍
Ready ❍ ❍ ❍ ●
Data ❍ ❍ ❍ ❍
Service Call D-RAM error Service A Service B Service C
Drum ● ❍ ● ❍
Alarm ❍ ● ● ❍
Ready ● ● ● ❍
Data ❍ ❍ ❍ ●
Service Call Service D Service E0 Service E1 Service P
Drum ● ❍ ● ❍
Alarm ❍ ● ● ❍
Ready ❍ ❍ ❍ ●
Data ● ● ● ●
Service Call NV-RAM
error
CPU Runtime
error
Drum ● ●
Alarm ❍ ●
Ready ● ●
Data ● ● ● ON ❍ OFF
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 printer, 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.