Printer says it can only print diagnostic page

[Lmadi]

Printer will not print at all despite new toner

[Max3Aj]

@Lmadi, Hi there, and welcome to HP Support Community!

Thank you for reaching out with your concern. I'm glad to assist you today.

I understand your HP printer is only printing a diagnostic page and not responding to regular print jobs, even after installing a new toner. Let’s walk through a few steps to resolve this:

Check for Error Messages or Lights

• Look at the printer’s control panel or display screen for any error codes or warnings.
• If you see a message like “Printer in Diagnostic Mode” or “Printing Diagnostic Page Only,” it may be stuck in a service or startup mode.

Power Cycle the Printer

• Turn off the printer completely.
• Unplug it from the power source for 60 seconds.
• Plug it back in and turn it on. This can reset temporary glitches.

Check Toner Cartridge Installation

• Open the toner access door and remove the toner cartridge.
• Reinstall it carefully, ensuring it clicks into place.
• Use only genuine HP toner cartridges to avoid compatibility issues.

Cancel Pending Print Jobs

• On your computer, go to Control Panel > Devices and Printers.
• Right-click your HP printer and select See what’s printing.
• Cancel all pending jobs.
• Try printing a test page again.

Update Printer Firmware

Outdated firmware can cause unexpected behavior:

• Visit HP Software and Driver Downloads
• Enter your printer model and download the latest firmware.

If the suggestions helped solve the problem, please let us know by clicking “Accepted Solution.” It really helps fellow users find quick answers.

A quick “Yes” also goes a long way in showing appreciation!

Take care and happy computing!

Best regards,

Max3Aj

HP Support