I'm running a Brother HL-2040 in a small office and we have a problem with the Toner Cartridge and the detector:
Within 50 copies of replacing the Toner Cartridge, the light invariably comes back on. We've tried several different techniques with the cartridge to get it to reset: Removing and replacing the cartridge, resettling the cartridge, and good old fashioned futzing.
We are using Brother Cartridges, not any third party brand, but if this continues we might try that.
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The Brother HL 2040 laser printer has a toner cartridge that supplies toner to the drum assembly so that the printer can print properly. When the LED on the front of the printer indicates you are low on toner, you will need to replace the toner cartridge to maintain good print quality. Fortunately, the toner cartridge can be replaced without any special tools.
Instructions Things You'll Need:
* Replacement toner cartridge (part number TN350 or TN360) * Paper towel or scrap paper
Grasp the front cover of the printer and pull it toward you to open the toner door. Reach into the printer and grab the combined toner cartridge/drum assembly. Lift up slightly and pull it out of the front of the printer.
Place the cartridge and drum on a paper towel, spare sheet of paper, rag or other surface that can get dirty. Loose toner particles may spill from the cartridge.
Press the blue locking lever on the cartridge/drum unit to unlock the toner cartridge from the drum. Lift the toner cartridge up and away from the drum unit. Dispose of the old toner cartridge in accordance with your local regulations. Seal it in a plastic bag to keep loose toner from spilling.
Gently shake your new toner cartridge back and forth a few times to distribute the toner evenly across the width of the cartridge. Remove the plastic protective cover from the bottom of the cartridge.
Place the new toner cartridge onto the drum unit and press it down gently until it locks into place. The blue locking lever will automatically click into place. Verify that the toner cartridge is securely connected to the drum.
Locate the corona wire cleaner tab at the front of the drum unit. Slide it back and forth several times to improve the print quality of the drum. Set the tab back in the home position when finished.
Slide the combined toner cartridge/drum unit back into the printer and close the front cover.
There is a window on each end of the toner cartridge that you can cover with electrical tape and keep printing, it shines a light thru and when the toner is too low it says it's empty. The weight can be misleading.
have you check you toner, it has a white strap, you need to strip it to open the nozzle of your toner. but before you do that you need to shake it first to have a sharp print out before you would strip that white strap. have a nice day
Masking Tape Gives TN-350 Toner a Second Life, August 25, 2008
C. MACPHAIL "cmacphail3" After the "Toner Life End" message appears, it refuses to printeven one more copy. Offensive...until you show it who's in charge.
Remove the cartridge and find 2 clear plastic port holes, one oneach side. The printer shines a light through these to decide when toshut you off. But it's too sudden and too early.
Cover one or both windows with a small piece of masking tape. I get about 3400 copies per cartridge instead of 2400.