HP Color LaserJet Enterprise M856
Service mode 01. How to Enter
Open the service menu from an LCD control panel (M751/E75245)
Use the following procedure to open the service menu from an LCD control panel.
- From the Home screen on the printer control panel, use the arrow keys to navigate to Support Tools, and then select OK.
- Navigate to Maintenance, and then select OK.
- Navigate to Service, and then select OK.
- Enter the following service access code for the printer:
NOTE: After entering the PIN, select Sign In.
• M751, E75245: 04075119
Open the service menu from a touchscreen control panel (M856/E85055/M776)
Use the following procedure to open the service menu from a touchscreen control panel.
- From the Home screen on the printer control panel, scroll to and touch the Support Tools button.
- Open the Service menu:
- On the sign-in screen, select Service Access Code from the drop-down list.
- Enter the following service access code for the printer:
NOTE: After entering the PIN, select Sign In.
• M856, E85055: 10085619
• M776: 10077619