Test 4A - Cartridge Error
- Disconnect and reconnect DRB-II. DO NOT touch keypad. If DRB-II does not display CARTRIDGE ERROR, proceed to next step. If DRB-II displays CARTRIDGE ERROR, replace DRB-II cartridge. Perform TEST VER-1. Return to TEST 1A.
- If DRB-II displays KEY PAD TEST FAILURE, replace DRB-II. Perform TEST VER-1. If DRB-II does not display KEY PAD TEST FAILURE, return to TEST 1A.