Printers Error Code
Systems & Devices
Printers

55.1 | Internal controller error

Industry
Systems & Devices
Canonical
/systems/printers/error-codes/55-1/
Last Updated
Feb 27, 2026
Summary

The printer detected an internal controller/memory condition it could not recover from.

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What This Code Means

55.x errors on many enterprise printers are internal errors related to the controller, memory, or system state. 55.1 can be triggered by firmware conditions, memory issues, or configuration/state problems.

Where Users Usually See This Code

  • Printer control panel at startup
  • After a firmware update or crash
  • During printing of complex jobs

Why This Code Appears

  • Firmware glitch or inconsistent system state
  • Memory/processing constraints
  • Hardware controller fault

What Typically Happens Next

  • The printer stops printing and may reboot
  • Service intervention may be required if persistent

What This Code Is Not

  • It is not a paper jam message
  • It is not a toner-low indicator

Troubleshooting Checklist

  • Power-cycle and verify whether the error clears
  • Update firmware to the latest supported version
  • Remove add-on memory/expansion cards for isolation if supported
  • If the error persists at boot, consult manufacturer service documentation

Notes And Edge Cases

Some internal errors are intermittent; logging the exact sequence and recent changes helps support diagnose faster.

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