136VQT3W31Major confirmation/error messages to be indicated on the screen in text.* onlyOthersMessagesPERIODICALLY MAKE BACK UP OF DATA IN BUILT-IN MEMORY.*We recommend backing up important recorded motion pictures and still picturesperiodically to a PC, DVD disc etc. to protect it. (l 110, 120) This message does notindicate that there is a problem with this unit.CHECK CARD.This card is not compatible or it cannot be recognized by the unit.If this message appears even though motion pictures and still pictures are recorded on anSD card, the card may be unstable. Reinsert the SD card, then turn the unit off and thenon again.THIS BATTERY CANNOT BE USED.≥ Use a battery that is compatible with this unit. (l 20)If using a Panasonic battery compatible with this unit, remove the battery and theninsert it again. If the message appears even after repeating this several times, this unitneeds repair. Detach the power and contact consumer support. (l 159, 160, 161). Donot attempt to repair it by yourself.≥ You are attempting to connect an AC adaptor not compatible with this unit. Use thesupplied AC adaptor. (l 21)PLEASE CHECK EXTERNAL DRIVE OR DISC.A disc that cannot be used when connecting the unit to the DVD burner has been inserted,or the DVD burner is not recognized properly. Connect the USB Connection Cable againand insert a disc to copy the data. (l 110)HC-V500M