How to boot out of Manufacturing Mode (MFG Mode) on HP LaserJet Pro M404
Involuntary boot up to Manufacturing (MFG) Mode HP M404
The HP M404 printer line has a known malfunction, where the printer will involuntarily boot up to a
Manufacturing (MFG) Mode
and the control panel keys become unresponsive.
Follow these steps to return the printer to User Mode:
1. Press the power button once to bring the printer to the READY screen
2. Press cancel (X), return (?), return (?), cancel (X), return (?), return (?), to enter the Engineering Menu
3. Press “OK” on Underware Menu
4. Press “OK” on boot code menu.
5. You will see set to mfg_mode – Press the right arrow (>) to display set to user_mode and press “OK”
From this screen simply power off/on to resume normal operation