“Fatal error” is a bucket message. Treat it as “firmware stopped trusting a subsystem”—power, carriage, fuser, or scanner—depending on the brand.
Stabilize
- Power off, unplug 5 minutes.
- Remove paper trays and duplexers; check for hidden scraps.
- Reseat cables on all-in-ones (scanner unit hinges pinch harnesses).
- Try another wall outlet, not a dying UPS.
Capture the code
Write down any E#### / support code. That number matters more than the word fatal.
Safety notes
Repeated fatals after a fall usually mean a cracked optical sensor or loosened printhead cable—not a software tweak.
FAQ
Windows says fatal too?
Clear the job queue; the printer panel code is authoritative.
Under warranty?
Stop opening the case.
Photo: Unsplash. Repair steps are general guidance—model variants differ. Unplug power and follow ESD-safe practice before opening devices.
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