Brother HL-5240 all lights are on showing amber. toner,drum,paper and status light

Ether the paper sensing lever is broken or there is dust accumulation or paper fragments inside the optical sensor.

red light means in drum side or toner is not inserting properly...may be that issue...or you clean the inside printer ..after that insert a drum and toner ....check it ....try it...

a would advise you service the printer...... sometimes dirt and other things can cause it to malfunction

It may some paper jam inside your printer . open the front cover pull out the cartridge and look any jammed paper is there or not. if not the the problem may came from your toner drum.

PRINTER HL5240 NO PRINT TONER LIGHT ON

that error usually indicates that the toner has reached its end of life
or the drum is not properly installed.

i had one person who put the toner in but threw the drum cartridge away.

This problem you are getting is to replace the toner cartridge. Have you recently changed the drum unit as well. If so exchange it back to the other one.

After installing new toner or full toner cartridge and removing the yellow plastic cover press the go button this should start the printer on a cycle and add the toner. If this doesn't work then the toner sensor has malfunctioned and will need replacing. This will in turn out way the cost of a new machine.

Hope this helps and not too late for you.

Thanks Jason

The drum light will flash on my brother HL-5240 Laser Printer when printing but it continues to print just fine. Does this mean the drum needs to be replaced?

My HL-5240 did the same thing, Here is what I found:

Look at the back of the printer. Pull down the back cover. Look to the right and the left of the exposed internals of the printer and there should be another handle/knob you can pull down. Pull these both down simultaneously and check to make sure there isn't a piece of paper in there! This was a shock to me! My office printer was held up for days until I found this hidden door in the back! I felt like an idiot that it was from a stupid paper jam!

1) Turn off printer
2)Turn back on
3) Remove Drum and Toner.
4)Press Go for 1 second(it appears to do nothing)
5)Put Drum and Toner back in.
6)Press Go for 1 second(it appears to do nothing)
7)Close door.
Try that