Using the A250F with the PC250F: JP1 jumper must be placed in the 2-3 position and the FET must be placed in the STORE position. (refer to layout below) Using the A250F/NF with the PC250F: JP1 jumper must be placed in the 1-2 position and the FET must be placed in the ACTIVE Q1 position. (refer to layout below) Refer to A250 Application Notes for testing.