Panasonic NN-S262SF Service Manual

Also see for NNS252BF - MICROWAVE OVEN/OTR: Service manual Operating instructions Service manual

9.1. Magnetron1. Discharge the high voltage capacitor.2. Disconnect 2 connectors from fan motor B.3. Remove 4 screws holing fan motor B (U) assembly.4. Remove 3 screws which holding exhaust guide (U) ontooven.5. Tilt exhaust guide (U).6. Remove 1 screw holding air guide A and then remove airguide A.7. Remove 2 high voltage lead wires from magnetron filamentterminal.8. Remove 4 screws holding magnetron.NOTE:After replacing the magnetron, tighten mountingscrews properly making sure there is no gap betweenthe waveguide and the magnetron to preventmicrowave leakage.CAUTIONWhen replacing the magnetron, be sure the antenna gasket is inplace.9.2. Digital programmer circuit(DPC) and membrane keyboard.NOTE:Be sure to ground any static electric charge built up onyour body before handling the DPC.1. Disconnect all connectors from D.P.C.2. Remove 2 screws holding escutcheon base and slide theescutcheon base upward slightly.3. Release CN6 connector´s lock of D.P.C by pushing bothlevels to inside and pull them upward, and remove flat cableof membrane keyboard.4. Remove 3 screws holding D.P.C.To replace membrane key board5. Push the upper part of key board (display window portion)from back of escutcheon base and peel off escutcheonsheet and membrane key board completely fromescutcheon base.NOTE:1. The membrane key board is attached to theescutcheon base with double faced adhesive tape.Therefore, applying hot air such as using a hair dryer isrecommended for smoother removal.2. When installing new membrane key board, makesure that the surface of escutcheon base is cleanedsufficiently so that any problems (shorted contacts oruneven surface) can be avoided.3. Alignment position of membrane key board is asfollows;Membrane key board: Right and upper edgesEscutcheon sheet: Right and upper edges9 DISASSEMBLY AND PARTS REPLACEMENTPROCEDURE14NN-S262SF / NN-S262BF / NN-S262WF / NN-S252BF / NN-S252WF