Data Light Flashing

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

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Hi Cameron,

My name is Pradeep and I work for Dell's Social Media Team.

Please steps in this link: http://lt.dell.com/lt/lt.aspx?CID=285905&LID=5547632&DGC=SM&DGSeg=DHS&RED=301&DURL=http://en.community.dell.com/support-forums/peripherals/f/3528/t/18328881
Please try the steps in this link: http://lt.dell.com/lt/lt.aspx?CID=285905&LID=5547631&DGC=SM&DGSeg=DHS&RED=301&DURL=http://en.community.dell.com/support-forums/peripherals/f/3528/t/18766348

Pradeep Lokesh
Social Media and Community Professional
Order Status: http://del.ly/61822hij
Download Drivers: http://del.ly/61832hid

Did you try to change the IP address of MFP. Please change IP address of MFP and connect the PC you are sure not giving any problem. If its works fine then connect rest of the remaining PC's

I've had this fault myself, If memory serves me right the control panel ( small though it is) we found to be the problem, once replaced the unit the displayed correctly, weirdly all functions of the printer were still available even though we were unable to see the display.
we were able to get config pages etc, and like you say the indicator lights were working- sort of - when they wanted to.
replace the diplay PWB ( its small and reasonably cheap)

Sounds like a bad print job stuck in a print spooler.
Turn off copier. Go around to all computers that print to it and open the print queue. delete all print jobs. reboot each PC. Power up copier and see if it clears

If the light flashing is the "light bulb like button" or the "Ready/Light" button, it means that either the printer is:

• The printer is busy receiving and processing data or printing.
• The printer is printing a directory, font list, menu settings pages, or Print Quality Test Pages.


If it's Busy:
• Wait for the message to clear.
• Press and release Cancel to cancel the print job.
• Press and hold Cancel to reset the printer.


If it's printing a directory, a font list, menu settings pages, or Print Quality Test Pages:
• Wait for the pages to print. The Busy message is displayed as the pages print. The Ready light is on when the
printing stops.
• Press and release Cancel to cancel printing.
• Press and hold Cancel to reset the printer.

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

Try putting a piece of paper in tray 1

I just ran into the same problem. I changed the driver to postscript and it works.