17Open DoorYesTROUBLESHOOTING CHARTIntial Power-Up(Door Open)NoNoOperation NormalClose Door Then Open DoorConnect Power Cord1. No power applied to power cord.2. Oven fuse open.3. Main board control fuse.4. Inoperative magnetron TCO.5. Inoperative cavity TCO.6. Broken or loose wire.7. Inoperative control transformer.8. Ribbon connector.9. Inoperative display board.1. Check interlock switches.2. Check T1 connection.3. Check J1-1 connection.