HP Laserjet MFP M140w - red exclamation mark - diagnostic does not help

[Domi0721]

Hello,
Red exclamtion mark, printer is stuck.

HP diagnisis tools say either:
-the printe is not online, but wifi symbol is blue, and printer report says it's connected, I can also access the web interface. 
or
- sign in on you hp accout, whre I can only see "printer cannot print"

On the printer mini screen : Error 01 

What does this mean ???

Thanks

Domi

[A_Gayathri]

Hi @Domi0721 ,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand you are facing an issue the red exclamation mark and "Error 01" message on your HP LaserJet MFP M140w indicate that there's a problem with the printer. 

Here's what you can do to troubleshoot this issue:

• Check Printer Connections: Even though the Wi-Fi symbol appears blue and the printer report shows it's connected, ensure that there are no loose connections. Try restarting both your printer and your Wi-Fi router.
• Update Printer Firmware: Ensure your printer's firmware is up to date. Sometimes, firmware updates address known issues and bugs. You can usually find firmware updates on the manufacturer's website or through the printer's web interface.
• Restart Printer: Try turning off the printer, unplugging it from power for a few minutes, then plugging it back in and turning it on again. This can sometimes resolve temporary issues.
• Reset Printer: If restarting doesn't work, try resetting the printer to its factory settings. This will erase any custom settings you've configured, so be prepared to reconfigure the printer if necessary. Instructions for resetting the printer can usually be found in the printer's user manual or on the manufacturer's website.
• Check Paper Jams: Error 01 could indicate a paper jam or a paper-related issue. Open the printer's access panels and check for any jammed paper or debris. Clear any jams carefully.

Refer to this document: HP LaserJet MFP M140w Printer

I hope this helps. 

Take care and have a good day.

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