I can't figure out what my administrator passcode is for my printer

[Sol212]

Product: HP LaserJet M604

SN: [personal info removed]

Problem: Cannot find Administrator Passcode

Note: I recently changed the Maintenance Kit due to getting the message "Maintenance Kit Low" message. Now I need to access the menu to reset the maintenance kit so that the printer knows a new one has been installed. The printer will not print anything until I fix it. Please assist in anyway you can. Thank you!

I have already tried the code "admin", "administrator", and "blank" as was suggested from different sites.

[Valsimot]

If someone set an admin password and you don't know it, you will need to coldest the printer.

https://laserpros.com/img/TechTips/hp-cold-reset-futuresmart-firmware.pdf 

[Sol212]

Thank you so much for the response! I have cold reset it, however I do not know what the default passcode is gonna be, do you happen to know?

Also don't know if this matters, just wanted to clarify that Im trying to find the Administrator Access Code that I am suppose to enter directly from my printers control panel.

[Valsimot · Accepted solution]

You did follow the right steps to reset the maintenance kit? Printer factory settings there is no password to reset the maintenance kit.