Panasonic VDR-M30PP Service Manual page 17

The VDR-M30 has two types of reset function: "System reset" and "Resetting camera functions".
The reset operation will return the various settings to the defaults when the VDR-M30 was shipped
form factory.
Information:
If a defect occurs in product, take note of settings, and then execute system reset first: The defect
may disappear.