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critical HP
Error Code Error message on control panel
A fault is displayed during firmware loading sequence before reaching the Ready state.
? What Causes This
Firmware load anomalies, power supply issues or loose electrical connections in internal components such as fuser assembly and feed rollers.
✓ How to Fix It
Perform checks using troubleshooting checklist starting from verifying basic operational prerequisites like correct power plugs, switch on positions, and connectivity. Resetting firmware through HP Customer Care might be required if the issue continues.
Source: page 310 of the official manual
From the manual
This error code appears in:
HP Laserjet 3050 All IN One Printer