Service Error: Power-On Self-Test (POST) Failure

This error indicates that the printer failed its initial power-on self-test. A critical component is not functioning, preventing the printer from booting.

• 1Faulty Main PCA (Printer Controller Assembly) preventing boot-up or proper component initialization.
• 2Defective or improperly seated DIMM (memory module) causing memory test failure during POST.
• 3Power supply unit (PSU) failure, delivering insufficient or unstable power to critical components.
• 4Corrupted firmware preventing the printer from completing its boot sequence.
• 5Failure of a critical peripheral component, such as the hard disk drive (HDD) or formatter board, that is essential for POST.

• Printer displays the '0x00F50001' error code immediately upon power-on.
• Printer does not progress past the initial HP logo or boot screen.
• Printer may cycle power on and off repeatedly without fully booting.
• No motor movement or printhead carriage initialization occurs.
• Control panel remains blank or shows only a backlight without any text or graphics.

1. 1

   Turn off the printer and unplug it. 2. Disconnect all external accessories (USB drives, network cables). 3. Wait 5 minutes, then plug it back in and restart. 4. If the error persists, service is required.