Brother 1250, HL-1030, 1240 service manual Factory inspection mode, Drum, Ready, Alarm, Data

CHAPTER 6 TROUBLESHOOTING

Factory inspection mode

The factory inspection mode is used to check if the sensors in the printer are functioning correctly. In the process of this inspection, the LEDs and the control panel button are also checked.

On entering this mode, the LEDs show the status of the respective sensors as shown in the figure below;

	Drum		Toner sensor
	Ready
			Rear registration sensor
	Paper
	Alarm		Front registration sensor
	Toner
	Data		Upper paper cassette sensor (HL-1250/1270N only)
			Button unpressed
			Fig. 6-12
Toner sensor		ON (The toner cartridge is installed.)		Drum LED ON
		OFF (No toner cartridge is installed.)		Drum LED OFF
Rear registration sensor		ON (Paper is detected.)		Ready LED ON
		OFF (No paper is detected.)		Ready LED OFF
Front registration sensor		ON (Paper is detected.)		Alarm LED ON
		OFF (No paper is detected.)		Alarm LED OFF
Upper paper cassette		ON (No paper cassette is installed.)		Data LED ON
sensor (HL-1250/1270N only)		OFF (The paper cassette is installed.)		Data LED OFF

For checking more sensors, press the panel button. The LEDs show the status of the respective sensors as shown in the figure below.

Drum	Paper eject sensor
Ready	Lower paper cassette registration sensor
Paper
Alarm
Toner
Data	Cover sensor

(HL-1250/1270N only)

Button pressed

Fig. 6-13

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