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Brother MFC L3780DW Supplies

That Is My Printer

Toner Cartridges, Maintenance Kits and Parts

Brother MFC L3780DW
Brother

One Item

Frequently Asked Questions

The MFC L3780DW uses a single toner cartridge, BRT TN229XXLM (BRT TN229XXL). BRT TN229XXLM yields 4000 pages.

Approximate color cartridge yields: BRT TN229XXLM (BRT TN229XXL, ~4000 pages).

When the MFC L3780DW reports "Supply Problem", it usually just can't communicate with one cartridge's chip. Give the printer a full power-cycle, take out and firmly reinsert the flagged cartridge, and lightly buff its metal contacts with a dry, lint-free cloth. If the message stays, install a new cartridge in the reported colour.

Quick Maintenance & How-To Guides

These quick tips apply to all laser printers. While your exact model may look slightly different, the steps are identical.

4 videos
Toner Smudges on prints! Easy fix For Brother Printers!
Maintenance

Inherited from MFC-L3000 series

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Toner Not Recognized! Easy Fix For Brother Printers!
Replacement

Inherited from MFC-L3000 series

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Printer not connecting to WiFi? Easy Fix For Brother Printers!
Setup

Inherited from MFC-L3000 series

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Replace Toner Message Won't Go Away! Easy fix For Brother Printer!
Troubleshooting

Inherited from MFC-L3000 series

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