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HP LaserJet Pro 100 Color MFPs (M175a and M175nw) - Restore Factory Settings
Restore factory settings
Restoring the factory-set defaults returns most of the settings to the factory defaults. It will not reset the page count or tray size, but it might reset the language. To restore the product to the factory-default settings, follow these steps.
On the product control panel, press the Setup button.
Use the arrows buttons to select the Service menu, and then press the OK button.
Use the arrows buttons to select the Restore Defaults item, and then press the OK button.