Genuine paper jams are usually down to humidity, worn feed rollers, or paper stored somewhere too damp or dry — keep paper sealed until use and clean rollers periodically. "Low toner" warnings are often just a threshold estimate rather than empty, especially with third-party cartridges reporting differently to the printer's counter; check actual print quality before assuming a replacement is needed.
Coach's tip: a proper service or clean once or twice a year cuts jams dramatically — treat printers like any other piece of equipment that needs maintenance.
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