Printer Problems The drum and ready light blink once then the drum, ready, alarm anddata light blink, then back to the drum, ready and so on. What isthe problem? I have changed the toner, unpluged the printer,turned it on and off and there is no paper jam.

It indicates Fuser Malfunction.When any of the following error is indicated, turn the printer Off, wait 5 seconds and then turn the printer On again.


If the alarm continues, perform a 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.
7. This has performed a factory reset on the printer.

(Provided by Brother.com)

Hope this helps.

Bruce

Service manual: ready and alarm blinking :
Paper Jam
Clear the paper jam and press the panel button if the printer
does not automatically resume printing.
Misfeed:
Re-install the paper and press the panel button.

Clear the jammed paper inside the printer. Press the panel button
if the printer does not automatically resume printing.

check the sensors:
1) Turn off the printer power switch, open the front cover, and remove the drum unit.
2) Turn on the printer while pressing the control panel button. The Drum LED comes ON.
3) Lightly press the panel button again.
Alarm LED is ON = Front registration sensor is turned ON.
4) Press and release the panel button again.
Drum LED is ON = Paper eject sensor is turned ON.

If sensors are On, paper is being detected, Off- no paper

If I could be of further assistance, 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

Hi,

Try this solution.

* Turn your printer off.
* Hold in the circular button on the front panel of your printer.
* Turn your printer back on.
* When the drum light is lit by itself let go of the button.
* Hold in the circular button on the front panel again.
* Once the Alarm light comes on, let go of the button.
Your printer should now be reset.

Hope this help you.

ready and alarm light blinking means paper jam, so carefully check paper path. open and take out drum unit, and from backside open cover and check fuser sensors.
even small piece of paper can cause this (or maybe some sensors are broken or not working)
Hope it helps

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.

I had the same problem after a resent power outage. Here's what fixed mine.

Turn the power switch off.
Wait a 15-20 seconds
While holding the button on the front panel down turn the power switch on.
After the drum light comes on release the button wait then press the button again.
Turn the machine off then back on again and you should be back in business.

To prevent the problem in the future if you are not using the printer turn it off and if the power goes off while printing get the printer turned off before the power comes back.

Pull the drum out the front door, remove the toner cartridge and check for any paper and remove it.

Make sure there is toner in the toner cartridge. Look at the lights on the printer. Look at the labels beside them. The label "Toner" will have two lines going to two lights. If those two lights are on when you try to print, you are out of toner. But a now toner and install it in the drum. Install the drum back into the printer.

If not, look at the drum. At the rear top is an opening across the whole drum. Look inside it, you will see a metal grid. That grid must be clean or it will cause small sparks. These sparks will cause a false toner empty error. Buy a can of compressed air from Best Buy (or wherever). Use this compressed air to blow clean the grid. Move the small blue tab at one side of the opening ti the other side and back again. Reinstall the drum and try printing again.

If neither of those help, write back and let me know what lights stay on when the printer stops.

check the sensors maybe stuck

On this printer, the alarm and data lights mean that the toner cartridge is empty. When you replace the toner, be sure to slide the corona wire cleaner across and back. This is the small light blue plastic piece on top of the drum cartridge. You'll see a small arrow in the plastic. Just slide it back and forth once or twice each time you replace the toner cartridge.

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.