Use the following procedure to check the condition of the batteries:
1. Press the MODE EDIT button so it is lit.
3. Press the 2 button followed by the 7 button.
4. Press and hold ENTER.
The PATCH/TONE LEDs will show the condition of the batteries. Each LED lit equals about 2 hours of use if you are using alkaline batteries. The condition of charge is shown as long as the ENTER button is held.
5. Release the ENTER button when finished.