MX4200.2 13. Turn the scanner on. 14. Locate a small gray potentiometer on the printed circuit board. The potentiometer looks something like a gray plastic Phillips screw head. If the scanner front panel is facing you, the pot will be just behind the keyboard on the left side. (Don't confuse this pot with the 3 pots along the right edge of the board. The battery voltage sensor pot is not near any other pot.) 15. Slowly adjust the potentiometer to the threshhold at which the low battery indicator begins to flash. This procedure worked with great success on an MX-4200, and its battery life was increased from 2 to 7.5 hours. I would like to thank Rick Meyer, WB9UFL, for finding the potentiometer in his MX-4000, and Ron Smithberg for let- ting me experiment with his MX-4200. Downloaded From P-80 International Information Systems 304-744-2253