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HP LaserJet MFP M139-M142 printers - Control panel features

The control panel includes buttons, icons, and lights to select print options and indicate printer status.

Control panel buttons, icons, and lights

The printer control panel has buttons, icons, and lights that indicate printer status and error states.

Example of the control panel buttons and lights

Callout	Description
1	Up and Down buttons: Increase or decrease the value of the selected item on the display.
2	ID Copy button: Copy an identification card.
3	Wireless button and light (wireless models only): Turns Wi-Fi on or off, sets up a Wi-Fi Direct connection, or connects to your router with Wi-Fi Protected Setup (WPS). The light indicates connection status. Solid light: Connected to a network or Wi-Fi Direct. Blinking light: Not connected to a network, or configuring a WPS or Wi-Fi Direct connection. Fast blinking light: Network or Wi-Fi Direct connection issue.
4	Attention light: The printer has an issue (error state) and requires user attention. Note: HP+ printers only: If the light blinks fast (4 blinks per 3 seconds), there is an issue with your HP account and/or printer connection. Open the HP Smart app for more information.
5	Copy Options button: Navigates through the different display menus, such as Number of Copies (default), Lighter/Darker, and Enlarge/Reduce.
6	Start Copy/Resume button: Starts a copy job, or prints the second side of a duplex print job (printing on both sides).
7	Cancel button: Cancels a print or copy job.
8	Supplies light: Displays the status of the toner cartridge. Off: The toner level is adequate, and there are no issues. Blinking: The toner cartridge has an issue (error state). Solid: The toner is very low, and the cartridge needs to be replaced.
9	Power button and Ready light: The button turns the printer on or off. The light indicates printer status. Solid light: On and ready to print. Blinking light: Receiving a print job. Dim light: Low-power state.

Control panel display menu

The control panel display has a number counter and copy adjustment options.

Callout	Description
1	2-digit LED display: Depending on the mode, it displays one of the following: A value for the number of copies, darkness, or size Error or status codes
2	Number of copies icon: Selects the number of copies.
3	Lighter/Darker icon: Adjusts the darkness setting of a copy job.
4	Enlarge/Reduce icon: Adjusts the size percentage of a copy job.

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Examples: "LaserJet Pro P1102 paper jam", "EliteBook 840 G3 bios update"