Brother 1240, HL-1030, 1250 service manual See ‘M-11 Service B’, How the LEDs indicate an error

					CHAPTER 6 TROUBLESHOOTING
					PR99180
Type of error	Drum	Ready	Alarm	Data	Remedy
Fuser Malfunction					See ‘M-9 Fuser failure‘.
Laser BD Malfunction					See ‘M-7 BD failure’.
Scanner Malfunction					See ‘M-8 Scanner failure’.
ROM Error					See ‘M-10 ROM error’.
D-RAM Error					See ‘M-10D-RAM error’.
Service A *					See ‘M-11 Service A’.
Service B *					See ‘M-11 Service B’.
Engine Interface Error					See ‘M-12 Engine interface error’.
Main Motor Malfunction					See ‘M-3 Main motor does not rotated’.
NV-RAM Error					See ‘M-10NV-RAM error’.
CPU Runtime Error *					See ‘M-11CPU runtime error’.
PCI Bus Error					See ‘M-13 PCI bus error’.
* Refer to the further description of these errors as follows;
∙ Service A:	Address Error
∙ Service B:	Bus Error
∙ CPU Runtime Error:	A CPU error other than the above two defects, such as an
	Illegal Instruction or Operation Overflow

How the LEDs indicate an error

ex. Fuser Malfunction

Drum

Ready

Paper

Alarm

Toner

Data

Time delay

: OFF : ON

Fig. 6-1

6-5