HP LaserJet M201n Pro

Power-on checks

Turn on the power. If the control-panel LEDs do not illuminate, perform the power-on checks to find the cause of the problem.

1. Verify that the product is plugged into an active electrical outlet that delivers the correct voltage.
2. Verify that the power switch is in the on position.
3. Make sure that the product makes the expected start-up sounds.

NOTE:
The overcurrent/overvoltage protection circuit in the low-voltage power supply unit might be functioning. Turn the product off, unplug the power cord, and turn the product on. If the product does not function, the fuse melts, or the power supply is malfunctioning, replace the engine controller unit.

Control-panel checks

Use the product control panel to conduct tests on the control panel LEDs, display, or buttons.

NOTE: When the menus are accessed, some of the touchscreen buttons located along the sides of the control-panel display are not illuminated. Use the figure below to locate the Cancel ✖ button and the left arrow button to access the control-panel tests.

1. From the Home screen on the product control panel, touch the Setup ⚙ button.
2. From the Setup Menu screen, simultaneously touch the non-illuminated left arrow ◄ button and the Cancel ✖ . This will activate the 2ndary Service Menu.
3. After touching both buttons, the Home screen appears. Touch the Setup Menu icon to access the 2ndary Service Menu bar.
4. From the Service Menu, touch the 2ndary Service menu bar.