Brother HL-2240 Toner Level Sensor Bypass

Several months ago we bought these little Brother compact laser printers to put in people’s cubicles to replace their aging HP 4000’s and whatever other antiquated printers they had. I’ve always had good luck with Brother equipment and in fact own a 2070N which I have put to good use over the years. They’re reliable, fairly fast, and super easy to work with.
Well for the past day or two we’ve had a couple that showed some serious drawbacks to buying one. See we get refurbished cartridges from a third-party vendor, and as much as I love saving money I’m totally against buying refurbished printer cartridges. Sure, I know they are ripping people off. Sure I know it’s just for the money. But see, if they sell you a good printer for $60, they have to make their money some how, and one of those ways is to use proprietary printer cartridges. Some people will really disagree here, but it’s really not that big a thing to ask that you buy the supplies from the manufacturer if they are willing to sell you a discount printer. For business critical printing tasks, I think this is the best policy. Buy new, send the old cartridges back to the manufacturer and save them the cost of fabricating new ones each time.
So these printers have a clever little toner sensor in their cartridges that are apparently super easy to break when refurbishing them incorrectly (read: by third-party toner refilling companies). I think this is on purpose to convince you to buy new cartridges. What happens with these busted sensors is that the printer thinks the cartridge is empty and refuses to print. Put a brand new cartridge in, and it works like magic. Now sometimes new cartridges break in shipment or just malfunction so Brother kindly put a toner bypass function in just for this occasion.

Toner Sensor Bypass For Brother HL-2240 Printers (and probably a lot of other models too).

Step 1 – Make sure the printer is on and the cartridge is in properly.

Step 2 – Press the “Go” Button seven times.

The printer will go through a startup routine and you’ll see the ready light come in. The toner light will probably still stay on, just ignore it. The printer should now print until it totally runs out of toner.
Note: Over the years it seems Brother has tweaked the bypass method on these printers. I have no idea what the differences are or how to tell if it will work or not. Most of the feedback I get indicates it works perfectly for almost all of them. Here are some variations you can try if this doesn’t immediately work:
Variation 1: Turn the printer off, and then back on then hit the Go button seven times after it comes back up fully (don’t try to print anything yet). This seems to be what works the best.
Variation 2: Turn the printer off, hit the Go button seven times while it is turning on.
Variation 3: Try hitting the Go button ten times instead of seven. There’s a WL model that requires this. There may be a regular networked model that has this method to.
Variation 4: Not so much a variation. Hit the button slower and more deliberately. As fast as the “Ah Ah Ah Ah” part in “Staying Alive” is probably about right.