Brother HL 1270N - Manual (Page 70)

4-4
Service call indications
If an unrecoverable error occurs, the printer will indicate the need for a service call by
illuminating all the LEDs, followed by a combination of LEDs as shown below:
For example, the following are the indications when a Fuser malfunction error occurs.
Ready
Alarm
Paper
Toner
Data
Drum
Ready
Alarm
Paper
Toner
Data
Drum
Fig. 4-2 LED indications caused by a fuser malfunction error
Service Call Fuser
Malfunction
Laser BD
Malfunction
Scanner
Malfunction
ROM Error
Drum ❍ ❍
Ready ❍ ❍
Alarm ❍ ❍ ❍
Data ❍ ❍ ❍ ❍
Service Call D-RAM
Error
Service A Service B Engine
Interface
Error
Drum ❍ ❍
Ready ❍ ❍
Alarm ❍
Data ❍ ❍ ❍
Service Call NV-RAM
Error
Main motor
Malfunction
CPU Runtime
Error
Drum ❍
Ready ❍
Alarm
Data