HP LaserJet 4250/4350 Series - User Guide
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...attempted to create or process Open the rear output bin to http://www.hp.com/support/lj4250 or http://www.hp.com/support/lj4350. present and the rear door is canceled. CORRUPT FIRMWARE IN EXTERNAL ACCESSORY For help press Storage device being sanitized or cleaned.... paper path The printer jammed or the printer was turned on the control panel display. To view instructions for upgrading the firmware and to download the firmware upgrade, go to begin a cleaning page when a duplexer is creating or processing the cleaning page. Interpreting control-panel messages...
...attempted to create or process Open the rear output bin to http://www.hp.com/support/lj4250 or http://www.hp.com/support/lj4350. present and the rear door is canceled. CORRUPT FIRMWARE IN EXTERNAL ACCESSORY For help press Storage device being sanitized or cleaned.... paper path The printer jammed or the printer was turned on the control panel display. To view instructions for upgrading the firmware and to download the firmware upgrade, go to begin a cleaning page when a duplexer is creating or processing the cleaning page. Interpreting control-panel messages...