Brother HL-1070 - Manual (Page 66)

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 mal-
function Laser BD
malfunction Scanner
malfunction ROM error
Feeder ❍ ❍ ❍ ❍
Drum ● ❍ ● ❍
Alarm ❍ ● ● ❍
Ready ❍ ❍ ❍ ●
Data ❍ ❍ ❍ ❍
Service Call D-RAM error Service A Service B CPU Runtime
error
Feeder ❍ ❍ ❍ ❍
Drum ● ❍ ● ●
Alarm ❍ ● ● ●
Ready ● ● ● ●
Data ❍ ❍ ❍ ●
Service Call NV-RAM
error
Feeder ❍
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 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
Ensure that the top cover is properly closed and the main controller board
is correctly installed.