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Press the Menu key.
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Press the Down arrow key, display should read; 2: Maintenance.
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Press the Set key, display should read; Init NVM.
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Press the Set key, display should read; Ready to Init.
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Press the Set key, display should read; Yes No.
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Press the left arrow key to select; Yes.
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Press the Set key, display should read; Initializing, Initialized, Reboot system to take effect.
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Power off printer.
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Wait 5 seconds.
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Power on printer.