Batteries may need to be recharged or replaced if an error persists after battery recharge, or the unit may require a service evaluation.
If the battery is currently in the device, and it is not working properly, remove the batteries and wait for 30 seconds and re-insert the batteries. In doing so, if your camera has a back-up or date and time battery, remove this battery as well. Removal of the back-up battery will cause a full reset of the camera and will clear any settings, including date and time. Please see your User's Guide for instructions to remove the backup battery.