Panasonic AG-CX350 4K Camcorder - Manual (Page 39)

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Chapter 3 Preparation — Charging the built-in battery
Charging the built-in battery
The date/time set in the camera is maintained by the built-in battery.
The built-in battery has been exhausted if [BACKUP BATT EMPTY] is displayed in the viewfinder or LCD monitor for approximately five seconds when
the power of the camera has not been turned on for a while, and then the power switch is set to <
j > (ON).
The date of the internal clock of the camera resets to January 1, 2019 if the built-in battery is exhausted.
Charge the built-in battery with the following procedure.
1
Set the power switch to < h > (standby).
2
Connect a fully charged battery or the AC adaptor to the camera.
For details about the connection of the battery or AC adaptor, refer to “Power supply” (page 30).
3
Leave the camera for approximately 24 hours.
The built-in battery will be charged.
The built-in battery is charged even when the power switch is set to <
j > (ON).
Check the date/time setting and the time code after charging. If [INTERNAL CLOCK HAS RESET] [<PLEASE SET TO CORRECT TIME>] is
displayed on the STATUS screen of the mode check, set the date/time of the internal clock. (page 40)
4
Set the power switch to < j > (ON), and check that [BACKUP BATT EMPTY] is not displayed in the LCD monitor.
If [BACKUP BATT EMPTY] is still displayed after charging, the built-in battery needs to be replaced. Consult your dealer.