This document is for HP LaserJet Pro M28a, M28w, M29a, M29w, M30a, M30w, and M31w printers.
The control panel includes buttons, icons, and lights to select print options and indicate printer status.
HP LaserJet Pro M28-M31 Printers - Control Panel Features
LaserJet Pro MFP M28a, M29a, and M30a
1. 
Copy ID button: Starts an ID copy job (LaserJet Pro MFP M29a only).
Copy ID button: Starts an ID copy job (LaserJet Pro MFP M29a only).
2. 
Start Copy button: Starts a copy job.
Start Copy button: Starts a copy job.
3. 
Supplies light: Blinks when a supply error displays, and is steady when the toner level is very low.
Supplies light: Blinks when a supply error displays, and is steady when the toner level is very low.
4. Power button: Turns the printer on or off.
5. 
Attention light: Indicates that the printer requires user attention.
Attention light: Indicates that the printer requires user attention.
6. 
Cancel button: Resumes or cancels print jobs.
Cancel button: Resumes or cancels print jobs.
LaserJet Pro MFP M28w, M29w, M30w, and M31w
1. Control panel LED display: View the number of copies, copy settings, and error messages.
2. 
Copy Setup button: Navigates through Number of Copies, Lighter/Darker, and Reduce/Enlarge copy options.
Copy Setup button: Navigates through Number of Copies, Lighter/Darker, and Reduce/Enlarge copy options.
3. Start Copy button: Starts a copy job.
Start Copy button: Starts a copy job.
4. Cancel button: Resumes or cancels print jobs.
Cancel button: Resumes or cancels print jobs.
5. Supplies light: Blinks when a supply error displays, and is steady when the toner level is very low.
Supplies light: Blinks when a supply error displays, and is steady when the toner level is very low.
6. Power button: Turns the printer on or off.
7. Attention light: Indicates that the printer requires user attention.
Attention light: Indicates that the printer requires user attention.
8. 
Wireless button and light : Turns the wireless feature on or off, configure a WPS connection, or configure a Wi-Fi Direct connection.
Wireless button and light : Turns the wireless feature on or off, configure a WPS connection, or configure a Wi-Fi Direct connection.
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A solid light indicates that a wireless connection is established.
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A slowly blinking light indicates that a connection is configuring.
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A rapidly blinking light indicates an issue with the wireless connection.
9. Copy ID button: Starts an ID copy job.
Copy ID button: Starts an ID copy job.
10. 
Down Arrow button: Decreases the value on the display, such as the number of copies or copy size.
Down Arrow button: Decreases the value on the display, such as the number of copies or copy size.
11. 
Up Arrow button: Increases the value on the display, such as the number of copies or copy size.
Up Arrow button: Increases the value on the display, such as the number of copies or copy size.
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