17Basic OperationPreparationPrecaution Manganese batteries cannot be used. Rechargeable AA batteries cannot be used, either. Do not use new batteries along with old batteries. The life of new batteries can decrease. If you do not use the FT1DR for a long period, remove the batteries from the battery case. If the terminal or electrode of the battery case is dirty, the FT1DR can malfunction due to poorcontact, resulting in overheating or explosion. If the terminal or electrode gets dirty, clean it using adry cloth or cotton swab.Installing/Removing the Battery PackInstalling the Battery Pack1 Insert the bottom tabs of the battery in the slots atthe bottom of the FT1DR.2 Push in the lock knobs until they click.PrecautionWhen you use the FT1DR for the first time after purchase oryou have not used it for a long period, charge the battery packbefore use.Removing the Battery Pack1 While pushing down the lock knobs, remove thebattery pack.Push down the lock knobs in the direction of the arrowshown in the illustration.PrecautionWhen releasing the lock knobs, be careful not to hurt yourfingers and nails.Lock knobsPush down the lock knobsin the direction of the arrow.
