Panasonic NN-H264SFR Service Manual

Also see for Inverter NN-H275: Operating instructions Operating instructions Service manual

4 SIMPLE WAY OF H.V. INVERTER/MAGNETRONTROUBLESHOUTINGPurpose:Simple way (3/23 seconds rule) of identifying whether it’s Magnetron, Inverter, or others.Set-up:The unit under question is connected through the Ammeter as shown below.Procedure:Follow the matrix table below to identify the problem source.Note:Do not replace both Inverter board and Magnetron simultaneously and automatically without going through thisprocedure.Power will: Ammeter reading is: To do: Remedy:Shut off in 23 secondsafter “Start”.1. Between 0.5A and 1.0A. Check and repair open magnetron circuit Open magnetron wiring between Inverterand magnetron terminal.2. Between 1.0A and 2.0A. Check continuity of D702 in Inverter PCB.1. D702 shorted Replace H.V.Inverter(F606Y6G00AP/F606Y6G00CP)2. D702 is OK Replace magnetronShut off in 3 secondsafter “Start”1. Less than 0.5A Check open circuit: Latch Switch, DPC,Power Relay and CN701Replace defective component(s), orcorrect switch, cables and connectors.5 H.V.INVERTER BOARD MAIN PARTS LIST(F606Y6G00AP/F606Y6G00CP)Ref. No. Part No. Part Name & Description Pcs/Set RemarksC707 ECWH30822JUA CAPACITOR 1 8200PF,3000VDCC706 ECWH30562JUA CAPACITOR 1 5600PF,3000VDCD701,D702 B0FBAZ000001 DIODE SI 2DB701 B0FBBS000001 BRIDGE DIODE 1 20A,600VL701 F50206G00AP CHOKE COIL 1Q701 B1JAGV000008 TRANSISTOR SI 1 900VT701 A609A6G00AP H.V. TRANSFORMER 113NN-P295 NN-H275 / NN-S255 NN-S245 / NN-H264SFR / NN-H264BFR / NN-H264WFR / NN-S254SFR / NN-S254BFR / NN-S254WFR