HP 49 Service Error
What it means
A firmware error, usually caused by a corrupt print job or a communication problem. Clearing the queue and power cycling the printer clears it in most cases; if it returns immediately, a firmware update is the next step.
Guides that cover this kind of fault
A guide written for 49 itself is still being checked against the manufacturer's documentation. These cover the same underlying problem and are filed under printer not printing.
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Common questions
What does the 49 error mean on a HP printer?
A firmware error, usually caused by a corrupt print job or a communication problem. Clearing the queue and power cycling the printer clears it in most cases; if it returns immediately, a firmware update is the next step.
Is the 49 error serious?
It is worth attention but not alarm. Switching the printer off, unplugging it for a minute and checking for anything physically in the way resolves a large share of cases before anything else is needed.
Different code or problem?
Switch off and unplug a printer before reaching inside it. If a fault involves the power supply or internal electronics, or the machine is under warranty, contact the manufacturer or a qualified technician. Full disclaimer. Brand and code names are trademarks of their owners; PrinterFixUp is independent and unaffiliated.