We are trying to make copies and there was a light flashing and it said 1L and we are unable to make copies the copier has been reset and the toner and drum have been replaced already and i have also unplugged it and plugged it back in and its still not letting us make copies

That indicates you need to replace the drum cartridge. It's been a while since I supported those products, but I believe the cartridge is in the bottom of the device. Make sure you remove the toner cartridge before tipping it over or you'll have a mess to clean up and won't be able to remove the drum.

Once you replace the drum, you need to reset the copier.

Using the original products of refills or after market save for alls<

Did you reset the drum count? You can do this by holding the cancel button until all lights flash clearing the drum count. This should fix the issue.

If the light is a red light with a flash shape then the machine probably has a jam. Look for jams and once you have cleared any jams switch the machine off and then on again. It could be the toner light if there are about six red dots - in this case you need to add toner.

Can u plss give what model of your copier?

If the signs that is blinking red which is shape like triangle , it is the toner cartridge indicator. The toner cartridge is empty.Try to pullout and check the toner cartridge, if it is light in weight it is already empty.

A common mistake is that people think that the waste toner needs to be emptied and instead the toner needs to be replaced --- and vice versa. Check to make sure that the toner bottle is not empty. Also, if you made copies that took ( used ) more toner then the machine was able to replenish, the machine has not had a chance to catch up. Place a white sheet of paper on the platen glass and make blank white copies. You may only be able to get 1-2 copies at first but as the device catches up with the toner replenish you should be able to make more. The blank copies you make -- do NOT put that paper right back into the machine. Lay it flat and let it cool, this will help prevent unwanted jamming due to heat build up in the paper. IF you have good amount of new toner in the machine, gently tap the front line ( or rear line) that feeds the used toner into the waste bottle. Sometimes the waste toner will clog and back up into the machine giving false 'waste toner full' message.

it does sound like the toner cartridge is empty or bad.

Drum counter usually has to be reset.. Check user manual or go to Brother's site if you want to drive yourself crazy Ed

Have you tried replacing the ink cartridge?