Drum light is on - Brother Office Equipment & Supplies

If a drum is exposed to light for a prolonged period of time it can be desensitized and cease working.
In most copiers the drum is charged with either a laser or an led light. The light used is very specifically calibrated to the drum. When the drum is exposed to this light a magnetic charge is applied to the drum which is how the toner gets pulled to the drum.

This machine has a separate drum and toner cartridge. Replacing the toner does not reset the drum light. Double check that the light on is, in fact, the drum light, and if it is, replace the drum unit. This should resolve your problem.
In order to replace the drum unit, do this: 1) With the printer on and the drum light blinking, open the front cover. 2) Press and hold the Go button for about 4 seconds until all the LEDs light up. Once all LEDs light up, release the Go button. 3) Pull the print assembly out of the machine. 4) Push down the green lock lever to take the toner cartridge out of the drum unit. 5) Put the toner cartridge into the new drum unit. 6) Reinsert the print assembly into the machine. 7) Close the front cover and verify that the lights turn off.
It is theoretically possible that you could reset the counter without actually changing the drum by simply skipping steps 3-6 above, but I have never tried it before and Brother may be checking a chip on the drum unit to verify that it is, in fact, a new drum unit. If they are, you will have to actually replace the unit to make the light go off. I would strongly recommend against resetting the counter without actually changing the drum though, as your print quality will degrade and the machine may start to dump toner into the inside creating a rather large mess and a hefty repair bill.

Reseat the toner cartridge. Turn the printer off, and then back on again. You may want to try a new cartridge, but if that does not eliminate the error, call your HP support line. If the imaging-drum light is still blinking but the Attention light is not on, you must replace the imaging drum before the printer can continue printing. The imaging-drum light might be blinking by itself or at the same time another light is on or blinking. If another light is also on or blinking, turn the imaging-drum light off in the simulator and turn the other light on or blinking to isolate the condition. The printer has determined that it cannot read or write to the e-label on the imaging drum.Reseat the imaging drum, and then power cycle the printer. If this does not work, replace the imaging drum. If the imaging drum light is still blinking but the Attention light is not on, turn the printer off, and then back on. If the problem persists, replace the imaging drum E-label reader. The imaging-drum light might be blinking by itself or at the same time another light is on or blinking. If another light is also on or blinking, turn the imaging-drum light off in the simulator and turn the other light on or blinking to isolate the condition.

If Hope that this helps,, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response. Thanks,Joe

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

drum light ended need to be replace drum.

The drum light is on due to a preset counter to notify you that the drum has reached the end of Normal Usage life expectancy. It doesn't mean that it has failed, yet...but soon. I would suggest having a new drum on hand for when print quality starts failing. Either new drum units have a reset fuse in them to clear the warning light, or there is a reset proceedure to use after installing the new drum unit.

Blinking says to replace drum soon, when it's on solid, it's time for a new drum...

Imaging drum is empty or missing (Error 40204) Light pattern Description The imaging drum is empty or missing. The imaging drum light is blinking, and then printer stops printing. An error 40204 is written to the event log. The printer cannot detect the imaging drum correctly. Action

1. Reinsert or replace the imaging drum.
2. If the imaging drum light is still blinking but the Attention light is not on, turn the printer off, and then back on.
3. Repeat Steps 1 and 2 with a new imaging drum.
4. If the problem continues, contact HP Customer Care at http://www.hp.com/support/clj2550 or see the flyer that came in the printer box for other contact information.

Imaging drum e-label reader is faulty (Error 10004) Light pattern Description The imaging drum light is blinking, and then printer stops printing. An error 10004 is written to the event log. The imaging drum e-label reader is faulty and the printer cannot detect the imaging drum correctly. Action

1. Reinsert or replace the imaging drum.
2. If the imaging drum light is still blinking but the Attention light is not on, turn the printer off, and then back on.
3. Repeat Steps 1 and 2 with a new imaging drum.
4. If the problem continues, contact HP Customer Care at http://www.hp.com/support/clj2550 or see the flyer that came in the printer box for other contact information.

It sounds to me that your maint counter needs to be reset. 24-7 will reset drum. Let me know if you need help getting into the simulation.

1. Open the front cover.
2. Locate the control panel button under the LED lights on the left side.
3. Press the control panel button until all lights are lit, then release it.
   The Drum counter is now reset.

On older models

1. Open the front cover.
2. Remove the drum and toner
3. Press the Go buttom button until all lights are lit, (they come on one at a time) then release it.
   The Drum counter is now reset.

f the Drum LED is still lit after replacing the drum unit, the Drum counter may not be reset.
Reset the Drum counter as follows:

1. Open the front cover.
2. Locate the control panel button under the LED lights on the left side.
3. Press the control panel button until all lights are lit, then release it.
   The Drum counter is now reset.