Resetting toner levels on a Brother MFC-L8850CDW colour laser printer

THE SYMPTOM THE HISTORY I&rsquo;m a big fan of Brother laser printers. I have a monochrome MFC-8840D that&rsquo;s been pretty much trouble-free for probably 25 years, and a colour MFC-L8850CDW that&rsquo;s been equally great, but only for maybe 15 years. Printed Christmas cards, travel agent invoices, documentation, and a mountain of band music over the years, all without complaint. We&rsquo;ve…