How to Clean Brother HL L3210CW Sereis Waste Toner Box?

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Try this first: Clean the contacts that enable the toner waste box to communicate with the printer. Once the waste toner box is removed from the printer (there are vids in this section that show you how), use rubbing alcohol and a cloth to clean the three bare contacts on the exterior of the box, right side. Then, do the same with their corresponding connectors inside the printer. (They look like circular metal loops.) Just a quick wipe will do the job. Clean these contacts, let them dry a minute or so, then put everything back into place. Fire up the printer and from your PC send a document to print. If the document prints and no error message shows up in the printer’s screen, you’re good to go. Over time, these contacts can get dirty or slightly corroded at which point they trigger the message to replace the waste toner box. And so, a two minute cleaning of the contacts returns their ability to communicate with the printer and saves you a $75 expense. If the waste toner box message persists, you can try one more thing before you spend money to replace it: Remove the old toner from the box. There are vids in this section that show you how.