Question about Brother HL 1240 Printer

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Brothers HL 1240 Alarm light on

The alarm light stays on before printing. When I select print, it moves to ready and I hear a flipping sound and the light goes back to alarm abd does not print

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Pull the drum out the front door, remove the toner cartridge and check for any paper and remove it.

Make sure there is toner in the toner cartridge. Look at the lights on the printer. Look at the labels beside them. The label "Toner" will have two lines going to two lights. If those two lights are on when you try to print, you are out of toner. But a now toner and install it in the drum. Install the drum back into the printer.

If not, look at the drum. At the rear top is an opening across the whole drum. Look inside it, you will see a metal grid. That grid must be clean or it will cause small sparks. These sparks will cause a false toner empty error. Buy a can of compressed air from Best Buy (or wherever). Use this compressed air to blow clean the grid. Move the small blue tab at one side of the opening ti the other side and back again. Reinstall the drum and try printing again.

If neither of those help, write back and let me know what lights stay on when the printer stops.

Posted on Nov 04, 2008

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Related Questions:

1 Answer

Ready and alarm lights keep blinking. will not print


Service manual: ready and alarm blinking :
Paper Jam
Clear the paper jam and press the panel button if the printer
does not automatically resume printing.
Misfeed:
Re-install the paper and press the panel button.

Clear the jammed paper inside the printer. Press the panel button
if the printer does not automatically resume printing.

check the sensors:
1) Turn off the printer power switch, open the front cover, and remove the drum unit.
2) Turn on the printer while pressing the control panel button. The Drum LED comes ON.
3) Lightly press the panel button again.
Alarm LED is ON = Front registration sensor is turned ON.
4) Press and release the panel button again.
Drum LED is ON = Paper eject sensor is turned ON.

If sensors are On, paper is being detected, Off- no paper


If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response

Thanks, Joe

Feb 21, 2011 | Brother HL 1240 Printer

1 Answer

I have a brother hl-1240 that has both the yellow data and red alarm led's lit. and it just printed 10 blank pages


make sure your catridges are full because some printers don`t let you print at all even if only one catridge is out

May 16, 2010 | Brother HL 1240 Printer

1 Answer

Printer Won't Print


Follow the link below for what the lights on the machine mean. I know that if your alarm and data light are on it means the toner is empty, and you wont be able to print, you would need to replace the toner cartridge, please follow the link below.

http://welcome.solutions.brother.com/BSC/public/us/ca/en/faq/faq/000000/000100/000070/faq000170_012.html?reg=us&c=ca&lang=en&prod=hl1440_all

Apr 17, 2010 | Brother HL 1440 Laser Printer

1 Answer

HL-1240, the alarm light is on, what would be the reasons?


the first alarm light (at the very top) indicate the toner life ends the second light(middle) indicate the drum life ends and the third is for paper jam or print error

Sep 18, 2009 | Brother HL 1240 Printer

1 Answer

Ready light doesn't stay lit, alarm light is red


Because I was getting gray shading on my pages and data was still being printing, I decided to change the toner cartridge. Now the pages are clean and white and all the lights function properly. Most cartridges that are running on empty don't print any data at all or at least print the data at the top of the page and gradually gets fainter sp? on the page. Who would have thought just by changing the cartridge would solve the problem? So glad that's all it was........wasn't excited about having to buy a new printer.

Jul 22, 2009 | Brother HL 1440 Laser Printer

1 Answer

Printer won't print


According to the operation manual: If alarm light and data light blink every 5 seconds- TONER LOW (purchase more toner and have it ready when the 'toner empty' is indicated). If alarm light and data light stay lit- TONER EMPTY (replace toner cartrige with new one).

Apr 21, 2008 | Brother HL 1440 Laser Printer

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