ORDER NO.PHAMOS0801002C3 E1 Microwave Oven NN-SD698S NN-ST678S NN-ST658W RPH (LATIN AMERICA) RUH (MEXICO) © 2008 Panasonic Home Appliances Microwave Oven (Shanghai) Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
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NN-SD698S / NN-ST678S / NN-ST658W CONTENTS Page Page 1 SCHEMATIC DIAGRAM 5 5.5. Inverter power supply (U) 15 2 DESCRIPTION OF OPERATING SEQUENCE 6 5.6. Temperature thermistor 15 2.1. Variable power cooking control 6 2.2. Inverter power supply circuit 6 2.3. Inverter defrost 6 2.4. Sensor cooking 6 2.5. Sensor reheat 7 2.6. Steam sensor and digital programmer circuit 7 2.7. Thermistor 7 6 MEASUREMENTS AND ADJUSTMENTS 16 6.1.
NN-SD698S / NN-ST678S / NN-ST658W 1 SCHEMATIC DIAGRAM 5
NN-SD698S / NN-ST678S / NN-ST658W 2 DESCRIPTION OF OPERATING SEQUENCE 2.1. Variable power cooking control 2.3. When the Auto Control feature is selected and the Start pad is tapped: High Voltage Inverter Power Supply (U) controls output power by the signal from Digital Programmer Circuit (DPC). Power relay always stay on, but PWM (Pulse Width Modulation) signal controls microwave output power. 1.
NN-SD698S / NN-ST678S / NN-ST658W Explanation of the Auto Sensor Cooking process 2.5. 1. During the first 10 second period there is no microwave activity. When calculating the T2 time by using the formula below make sure this 10 seconds is subtracted from the T1 time. In other words, T1 time starts at the end of the 10 second period. Sensor reheat Auto Sensor Reheat is a quick and easy way to reheat refrigerated and room temperature foods. Simply press the reheat pad.
NN-SD698S / NN-ST678S / NN-ST658W 3 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING Unlike many other appliances, the microwave oven is a high voltage, high current device. It is free from danger in ordinary use, though extreme care should be taken during repair. CAUTION Servicemen should remove their watches and rings whenever working close to or replacing the magnetron. 3.1. Check the grounding Do not operate on a two wire extension cord. The microwave oven is designed to be grounded when used.
NN-SD698S / NN-ST678S / NN-ST658W Discharging the high voltage capacitors 3.6. WARNING 1. After repair or replacement of parts, make sure that the screws of the oven, etc. are neither loosen or missing. Microwave energy might leak if screws are not properly tightened. There is high voltage present with high current capabilities in the circuits of the primary and secondary windings, choke coil and heat sinkof the inverter.
NN-SD698S / NN-ST678S / NN-ST658W 4 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 4.1. Magnetron 4.2. 1. Discharge high voltage charge. Digital programmer circuit (D.P.C) 2. Remove 1 screw holding air guide A on the oven cavity. CAUTION: 3. Remove 1 screw holding air guide A on the magnetron. Be sure to ground any static electric charge built up in your body before handling the DPC. 4. Remove 1 screw holding air guide B. 1. Disconnect all connectors from D.P.C. 5. Remove 1 screw holding themistor.
NN-SD698S / NN-ST678S / NN-ST658W 4.3. Low voltage transformer and/or power relays (RY1, RY2) 4.5. 1. Remove door C from door E by carefully pulling outward, starting from upper right hand corner using a flat blade screwdriver. CAUTION: 2. Separate door E from tabs on door A and remove door A. Be sure to ground any static electric charge built up in your body before handling the DPC. 3.
NN-SD698S / NN-ST678S / NN-ST658W 4.6. Turntable motor 4.7. 1. Remove the motor cover by breaking off at the 8 spots indicated by arrows with a cutter or the like. Steam sensor 1. Disconnect connector CN2 from digital programmer circuit board. 2. Disengage catch hooks on sensor cover C from orifice. NOTE: After removing the motor cover, be sure that cut portions are properly trimmed or bent to the inside so that no sharp edges will be exposed to outside. 3. Remove steam sensor from orifice. 2.
NN-SD698S / NN-ST678S / NN-ST658W 4.8. 6. Press 1 encircled locking tab and then slide 4 locking tabs of Inverter bracket at the bottom of the base in direction of arrows. Inverter power supply CAUTIONS 1. Always leave the grounding plate in place. 2. Always securely tighten the ground screw through the bottom of the chassis (base). 3. Securely connect 3 lead wire connectors. 4. Make sure the heat sink has enough space (gap) from the oven.
NN-SD698S / NN-ST678S / NN-ST658W 5 COMPONENT TEST PROCEDURE 5.3. WARNING 1. High voltage is present at the output terminals of the High Voltage Inverter (U) including aluminum heat sink during any cook cycle. 2. It is neither necessary nor advisable to attempt measurement of the high voltage. 3. Before touching any oven components, or wiring, always unplug the power cord and discharge the high voltage capacitors (see page 8). 5.1.
NN-SD698S / NN-ST678S / NN-ST658W 5.5. Inverter power supply (U) 5. Program oven at High power for 1 minute and press [Start] pad. DO NOT try to REPAIR H.V. Inverter power supply (U). Replace complete H.V. Inverter(U) Unit. a. After approximately 3 seconds, oven stops operating. b. During oven operation, approximately 0.4A. Unplug CN701 the INPUT CURRENT 0.4A input current is FAILURE CODE Oven stops in 3 seconds after started.
NN-SD698S / NN-ST678S / NN-ST658W 6 MEASUREMENTS AND ADJUSTMENTS 6.1. Adjustment of primary latch switch, secondary latch switch and monitor interlock switch. 1. Mount the Primary latch switch, the Secondary latch switch and the Monitor interlock switch to the door hook assembly as shown in illustration. NOTE: 6.2. No specific individual adjustments during installation of the Primary latch switch, Secondary latch switch or Monitor interlock switch to the door hook are required.
NN-SD698S / NN-ST678S / NN-ST658W 7 PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE 7.2.1. Measurement with the outer panel removed. Whenever you replace the magnetron, measure for radiation leakage before the outer panel is installed and after all necessary components are replaced or adjusted. Special care should be taken in measuring around the magnetron. 7.1. Equipment • Electromagnatic radiation monitor 7.2.2. • Glass thermometer 212°F or 100°C • 600cc glass beaker 7.2.
NN-SD698S / NN-ST678S / NN-ST658W 7.4. At least once a year, have the radiation monitor checked for calibration by its manufacturer.
NN-SD698S / NN-ST678S / NN-ST658W 8 TROUBLESHOOTING GUIDE DANGER: HIGH VOLTAGES 1. DO NOT RE-ADJUST PRESET CONTROL on the H.V.Inverter (U). It is very dangerous to repair or adjust without proper test equipment because this circuit generates very large current and high voltage. Operating a misaligned inverter circuit is dangerous. 2. Ensure proper grounding before troubleshooting. 3. Be careful of the high voltage circuitry, taking necessary precautions when troubleshooting. 4.
NN-SD698S / NN-ST678S / NN-ST658W 8.2. (Troubleshooting) Other problems SYMPTOM 1. Oven is dead. Fuse is OK. No display and no operation at all. 2. No display and no operation at all. Fuse is blown. 3. Oven does not accept key input (Program) 4. Fan motor turns on when oven is plugged in with door closed. 5. Timer starts count down but no microwave oscillation. (No heat while oven lamp and fan motor turn on) 1. 2. 3. 4. 1. 2. 3. 4. 1. 2. 3. 4. 1. 2. 3. 1. 2. 3. 6.
NN-SD698S / NN-ST678S / NN-ST658W 8.3. Troubleshooting of inverter circuit (U) and magnetron This oven is programmed with a self diagnostics failure code system which will help for troubleshooting. H95, H97, H98 and H99 are the provided failure codes to indicate magnetron and inverter circuit problem areas. This section explains failure codes of H95, H97, H98 and H99. First, you must program the DPC into TEST MODE, press Timer/Clock pad twice → Press Start pad once → press Power Level pad once.
NN-SD698S / NN-ST678S / NN-ST658W 8.4. SIMPLE WAY OF H.V. INVERTER/MAGNETRON TROUBLESHOOTING Purpose: Simple way (3/37 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 this procedure.
NN-SD698S / NN-ST678S / NN-ST658W 8.6.
NN-SD698S / NN-ST678S / NN-ST658W 9 EXPLODED VIEW AND PARTS LIST 9.1.
NN-SD698S / NN-ST678S / NN-ST658W 9.2. PARTS LIST NOTE: 1. When ordering replacement part(s), please use part number(s) shown in this part list. Do not use description of the part. 2. Important safety notice: Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacture’s specified parts. Ref. No. 1 2 2 2 2 2 2 3 4 5 Part No.
NN-SD698S / NN-ST678S / NN-ST658W Ref. No. 45 Part No.
NN-SD698S / NN-ST678S / NN-ST658W 9.3. Ref. No. W1 W2 W3 WIRING MATERIALS Part No. F030A7D00RP F030E5L00AP F03537D00AP Part Name & Description LEAD WIRE HARNESS H.V.
NN-SD698S / NN-ST678S / NN-ST658W 9.4. DOOR ASSEMBLY Ref. No. D1 D1 D2 D2 D3 D4 D5 Part No.
NN-SD698S / NN-ST678S / NN-ST658W 9.5. 9.5.1. Ref. No. E1 E2 E3 E4 E5 E6 E7 E8 E10 E11 ESCUTCHEON BASE ASSEMBLY NN-SD698S Part No. F603L8X00RP F603Y8X00RP F800L8X00SRP F66164W20AP F82988X00SAP F80725Y00SAP F82566K10AP F80375K00AP F90095X00AP F83928P00KAP Part Name & Description D.P.CIRCUIT (AU) D.P.
NN-SD698S / NN-ST678S / NN-ST658W 9.5.2. Ref. No. E21 E23 E26 E27 E28 E29 E30 NN-ST678S Part No. F603L8V60RP F800L8V60SRP F80725Y00SAP F82565Y00AP F80375K00AP F630Y8V60BRP F90095X00AP Part Name & Description D.P.
NN-SD698S / NN-ST678S / NN-ST658W 9.5.3. Ref. No. E41 E43 E49 E50 E51 E52 NN-ST658W Part No. F603L7G50RP F80346K50HAP F630Y8V70HRP L5AAAEC00056 F66175L00AP F67005U40XN Part Name & Description D.P.
NN-SD698S / NN-ST678S / NN-ST658W 9.6. PACKING AND ACCESSORIES Ref. No. P1 P1 P2 P2 P2 P3 P4 P5 P5 Part No. F00038X00RP F00038V60RP F01028X00SRP F01028V60SRP F01028V70HRP F01046K50AP F01055L00AP F01067F00AP F01068100XN Part Name & Description INSTRUCTION MANUAL INSTRUCTION MANUAL PACKING CASE,PAPER PACKING CASE,PAPER PACKING CASE,PAPER UPPER FILLER LOWER FILLER P.E.BAG P.E.
NN-SD698S / NN-ST678S / NN-ST658W 10 DIGITAL PROGRAMMER CIRCUIT 10.1.
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NN-SD698S / NN-ST678S / NN-ST658W 10.2.
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NN-SD698S / NN-ST678S / NN-ST658W 10.3.
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NN-SD698S / NN-ST678S / NN-ST658W 10.4. PARTS LIST 10.4.1. NN-SD698S Ref. No. BZ310 C10 C13,C16 C482 C483 C485 CX320 DISP110 DISP HOLDER D40,D220,D221,D226,D227 D10-D13 D480 IC1 IC350 IC480 Q10,Q180 D25 D26,D27 RY1 T10 SW1,SW2,SW6,SW7,SW8,SW9,SW10, SW11,SW12,SW13, SW14 RE80 ZD10 ZD11 Part No.
NN-SD698S / NN-ST678S / NN-ST658W 10.4.3. NN-ST658W Ref. No. BZ310 C12 C13 CX320 D220-D222,D224,D227 D10-D13 IC1 IC350 Q10,Q180 D25 D26,D27 RY1 T10 VZ1 ZD10 ZD11 Part No. L0DDEA000014 AECETK1V471B AECETS1C220B H2B800400007 MA2C19600E B0EAKT000025 MN101C78ADD C0EBE0000401 B1BAAJ000003 D4EAY271A036 D4EAY112A036 AEBGJQC25F18 G4C2AAD00006 D3CA6103A017 B0BA5R600016 B0BA4R400002 Part Name & Description BUZZER AL CHEM CAPACITOR AL CHEM CAPACITOR CERAMIC RESONATOR DIODE DIODE L.S.I.
