Brother HL-820, HL-1020 Service a Service B CPU Runtime Error, Error Codes, Fuser Malfunction

6.2Error Codes

In the event of a printer failure, error codes will be indicated as shown below. All the lamps and the specific lamps are turned ON alternately. The specific combination of lamps that are ON indicates the type of the error.

Type of error	Data	Ready	Alarm	Drum
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
CPU Runtime Error *

* Refer to the further description of these errors as follows;

Service A:

￿Service B:

CPU Runtime Error:

Address Error

Bus Error

A CPU error other than the above two defects, such as an Illegal Instruction or Operation Overflow

HOW THE LAMPS INDICATE AN ERROR

FUSER MALFUNCTION

Drum

Alarm

Ready

(Paper)

Data

(Toner)

Time delay

: OFF : ON

Fig. 4-9

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