Error Codes - Brother HL-720 - B/W Laser Printer Service Manual

4.2

Error codes

In the event of a printer failure, error codes will be indicated as shown below. All the LEDs
and the specific LEDs go ON by turns repeatedly. The specific combination of ONs
indicates the type of the error.
Type of error
Fuser malfunction
Laser BD malfunction
Scanner Malfunction
ROM Error
D-RAM Error
Service A
Service B
Service C
Service D
Service E0
Service E1
Service P
NV-RAM Error
LED indicating the error
Fuser Malfunction
DRUM
ALARM
READY
(PAPER)
DATA
(TONER)
DATA READY






















A lapse of time
: OFF : ON


ALARM DRUM








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