Toner I have a Brother 1440 printer with a new toner cartridge. prints come out real streaky (missing horizontal segments) and the alarm light is flashing. Like I said, NEW toner cartridge, i'm not buying another one.

The Toner cartridge is empty, You can possibly take out the toner and tilt it fron side to side and maybe get a few more prints, but most likely you will need to replace the toner.

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

When the data and alarm light are on it means the toner is empty. You will need to replace the toner cartridge.

If these two light are on this means that the Toner is empty, you will need to replace the toner cartridge.

It depends upon the number of prints you have done since Feb and the toner cartridge capacity. Some toner cartridges have 2500 page capacity others have 5000 pages or more.
If you think you have not exceeded or reached the cartridge capacity, take it out of the printer and give it a shake in a horizontal position to distribute the toner evenly across the drum and place it back in the printer. This also works when the toner is nearly empty.

Shiik the toner cartridge. workedbeautifully. Will get new toner soon.

On this printer, the alarm and data lights mean that the toner cartridge is empty. When you replace the toner, be sure to slide the corona wire cleaner across and back. This is the small light blue plastic piece on top of the drum cartridge. You'll see a small arrow in the plastic. Just slide it back and forth once or twice each time you replace the toner cartridge.

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).

(blinking every 5 seconds) Toner Low Indicates that the toner cartridge is nearly empty. Purchase a new toner and have it ready for when Toner Empty is indicated. (solid) Toner Empty Replace the toner cartridge with a new one. User's Manual is available at the following location: http://www.brother-usa.com/Data/Documentation/Printer/User/UM_HL1440_1450_1470N.pdf Hope this helps.

(blinking every 5 seconds) Toner Low Indicates that the toner cartridge is nearly empty. Purchase a new toner and have it ready for when Toner Empty is indicated. (solid) Toner Empty Replace the toner cartridge with a new one. User's Manual is available at the following location: http://www.brother-usa.com/Data/Documentation/Printer/User/UM_HL1440_1450_1470N.pdf Hope this helps.