Drum light on Ready light on Alarm light on Data light on

Question edited for full 'make model (what it is)'
Question moved to Brother HL category.

chapter 3 onwards of the manual. The drum light means you need a service call.
https://download.brother.com/welcome/doc002127/ZLe_UG_eng.pdf

..

This unit might need resetting!

Here's how..

There's two ways to reset it

First: Soft Reset
1. Open front cover.
2. Hold down button located under LED's until all LED's are lit.
3. Release button and make sure drum LED is off, then
4. Close cover

Second: Factory Reset
1. Turn the printer off.
2. Hold in the circular button on the front panel of the printer.
3. Turn the printer back on.
4. When the DRUM light is lit by itself let go of the button.
5. Hold in the circular button on the front panel again.
6. Once the Alarm light comes on, let go of the button.
This will perform a factory reset on the printer.

I hope that's everything you want.
Please accept this answer if this will help you.
Thank you for using Fixya.

Follow the link below to see what the light flashing mean.

http://welcome.solutions.brother.com/BSC/public/us/ca/en/faq/faq/000000/000100/000070/faq000170_012.html?reg=us&c=ca&lang=en&prod=hl1440_all

red alarm light is on and printer is not printing

Yes, drum light means drum is nearly used up, and alarm plus data means the toner is almost gone.

Might have a paper jam in area of toner and drum cartridge that may need to be removed. Typically this will solve the issue.

have you tried reinstalling the printer or driver?

Hi, it sounds like you need to change the drum. If you are using the High Yield TN660 toner is your printer, then the drum needs changing every 3-4 toners. If using the low yield TN6300 toner then your drum needs to be replaced every 6-7 toners. Hope this helps

According to the operation manual: If alarm light and data light blink every 5 seconds- TONER LOW (purchase more toner and have it ready when the 'toner empty' is indicated). If alarm light and data light stay lit- TONER EMPTY (replace toner cartrige with new one).

tray this
The procedure for the factory inspection mode is as follows.
(1) Turn off the printer power switch, open the front cover, and remove the drum unit.
(2) Turn on the printer power switch while holding down the control panel button. The Drum
LED comes ON.
(3) Lightly press the panel button again.
(4) Check that all the LEDs except the Ready LED are OFF.
✒ If the toner sensor is ON, the Drum LED stays ON (error).
✒ If the front registration sensor is ON, the Alarm LED stays ON (error).
✒ If the upper paper cassette sensor is ON, the Data LED stays ON. (error) (HL-1250
only)
NOTE:
The lower paper cassette solenoid is turned ON/OFF even if the panel button is not pressed.
(5) Check the rear registration sensor.
✒ If the rear registration sensor is stuck backwards, the Ready LED stays OFF. (error)
✒ If the rear registration sensor is moved back and forth, the Ready LED comes ON at
any time. (error)
(6) Check that only the Data LED comes ON while pressing the panel button.
✒ If the paper eject sensor is ON, the Drum LED stays ON. (error)
✒ If the lower paper cassette registration sensor is ON, the Ready LED stays ON. (error)
If the registration sensor is ON, the lower paper cassette solenoid is turned ON, and
the Ready LED also stays ON. (HL-1250 only)
NOTE:
The lower paper cassette solenoid is turned ON/OFF even if the panel button is not pressed.
(7) Install the drum unit.
✒ Check that the Drum LED goes ON and the Ready LED goes OFF.
(8) Close the front cover.
(9) Continue to press the control panel button.
✒ Check that the Data LED stays OFF.
(10) Release the panel button.
(11) If all the sensors except the toner sensor are correct, the printer goes back to the Ready
status.
If any error is detected, the printer stays in the inspection mode.