Samsung 5. Troubleshooting free download

File name 5. Troubleshooting.pdf

5. Troubleshooting PRECAUTION 1. CHECK GROUNDING BEFORE CHECKING FOR TROUBLE. 2. BE CAREFUL OF THE HIGH VOLTAGE CIRCUIT. 3. DISCHARGE THE HIGH VOLTAGE CAPACITOR. 4. WHEN CHECKING THE CONTINUITY OF THE SWITCHES OR TRANSFORMER, DISCONNECT ONE LEAD WIRE FROM THESE PARTS AND THEN CHECK CONTINUITY WITHOUT THE POWER SOURCE ON. TO DO OTHERWISE MAY RESULT IN A FALSE READING OR DAMAGE TO YOUR METER. 5. DO NOT TOUCH ANY PART OF THE CIRCUIT OR THE CONTROL CIRCUIT BOARD, SINCE STATIC DISCHARGE MAY DAMAGE IT. ALWAYS TOUCH GROUND WHILE WORKING ON IT TO DISCHARGE ANY STATIC CHARGE BUILT UP. 5-1 Electrical Malfunction Oven is dead. (No display and no operation at all.) Open or loose lead wire harness Fuse is O Open thermal cutout (Magnetron) Check fan motor when thermal cutout is defecti e. Open low oltage transformer Check Ass y PCB when L.V.T is defecti e. Defecti e Ass y PCB Shorted lead wire harness Defecti e primary latch switch (NOTE 1) (NOTE 1) Defecti e monitor switch (NOTE 1) (NOTE 1) Check ad ustment of primary, interlock monitor, power relay, door sensing switch. Shorted H.V.Capacitor Shorted H.V.Transformer (NOTE 2) (NOTE 2) NOTE 1 All of these switches must be replaced at the same time. (refer to ad ustment instructions) Check continuity of power relay contacts and if it has continuity, replace power relay also. NOTE 2 When H.V.Transformer is replaced, check diode and magnetron also. Oven does not accept key input (Program) Key input is not in-Se uence Refer to operation procedure. Oven does not accept key input Open or loose connection of membrane key pad to Ass y PCB Shorted or open membrane panel Defecti e Ass y PCB Replace PCB main. Off-alignment of latch switches Ad ust door and latch switches. Timer starts 28 countdown but no microwave Open or loose connection of high Check high oltage component according to Oven does not accept key input Open or loose connection of