1. Turn the product off and then on.
2. Before the memory count appears on the control-panel display, press and hold 9 until all three LEDs flash once and then stay on. This might take up to 20 seconds.
3. Press 3 one time, and then press the Start button.
4. Press 3 two times until the NVRAM INIT item appears on the control-panel display.
5. Press 6 one time, and wait while the product completes its initialization sequence.
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Re: LJ m4555 MFP : not accept factory settings restore
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