Panasonic NN-S762BF Service Manual
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Panasonic NN-S762BF Service Manual

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ORDER NO.SIMMC 0112031A1
E1
Microwave Oven
NN-S762BF/WF / NN-S752BF/WF / NN-S742BF/WF
APH(USA)
CPH(CANADA)
Please file and use this specified manual together with the service
manual for Model NN-S560BF/WF(ORDER NO. SIMMC0001002C3).
SPECIFICATIONS
1

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  • Page 1 ORDER NO.SIMMC 0112031A1 Microwave Oven NN-S762BF/WF / NN-S752BF/WF / NN-S742BF/WF APH(USA) CPH(CANADA) Please file and use this specified manual together with the service manual for Model NN-S560BF/WF(ORDER NO. SIMMC0001002C3). SPECIFICATIONS...
  • Page 2 2001 Shanghai Matsushita Microwave Oven Co., Ltd. / All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 6 1. SCHEMATIC DIAGRAM (APH) 2. SCHEMATIC DIAGRAM (CPH)
  • Page 7 3. MEASUREMENTS AND ADJUSTMENTS...
  • Page 8 3.1. Adjustment of Primary latch switch, Secondary latch switch and Short switch. 1. When mounting Primary latch switch,Secondary latch switch and short switch to door hook assembly, mount the Primary latch switch, the Secondary latch switch and the short switch to the door hook assembly as shown in table.
  • Page 9 3.2. Measurement of microwave output The output power of the magnetron can be determined by performing IEC standard test procedures. However,due to the complexity of IEC test procedures, it is recommended to test the magnetron using the simple method outlined below. Necessary Equipment: *1 liter beaker *Glass thermometer / *Wrist watch or stopwatch NOTE:...
  • Page 10 RATED OUTPUT TEMPERATURE RISE 1200W(IEC705-88) Min. 18.5°F(10.3°C) 1300W(IEC705-88) Min. 19.8°F(11.1°C) 4. PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE NOTE: The U.S. Government standard is 5 mW/cm while in the customer’s home. 2mW/cm stated here is our own voluntary standard. (1mW/ for Canada) 4.1.
  • Page 11 2. Set the radiation monitor to 2450MHz and use it following the manufacturer's recommended test procedure to assure correct results. 3. When measuring the leakage, always use the 2 inch (5cm) spacer supplied with the probe. 4. Tap the start pad or set the timer and with the magnetron oscillating, measure the leakage by holding the probe perpendicular to the surface being measured.
  • Page 12 5. EXPLODED VIEW AND PARTS LIST...
  • Page 13 6. 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.
  • Page 14 Ref. No. Part No. Part Name & Description Pcs/Set Remarks F00069660AP CAUTION LABEL ******APH F00069660AP CAUTION LABEL S762BF/WF APH, S752BF/WF APH, S742BF/WF APH F00067600CP CAUTION LABEL S762BF/WF CPH, S752BF/WF CPH F00075K00BAP NAME PLATE S762BF APH F00075K00HAP NAME PLATE S762WF APH F00075K20BAP NAME PLATE S752BF APH F00075K20HAP NAME PLATE...
  • Page 15 Ref. No. Part No. Part Name & Description Pcs/Set Remarks XTTAFE4T12A0 SCREW FOR CABINET BODY XTT4+8BFZ SCREW FOR CABINET BODY SIDE (****BF APH/CPH) XTT4+8BCR SCREW FOR CABINET BODY SIDE (****WF APH/CPH) J692Y4T00CP NOISE FILTER S762BF/WF CPH, S752BF/WF CPH F0922000BJ CUSHION RUBBER 7.
  • Page 16 Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L5K00AP D.P.CIRCUIT RTL (W/COMPONENT) S762BF/WF APH F603L5K20AP D.P.CIRCUIT RTL (W/COMPONENT) S752BF/WF APH F603L5K30AP D.P.CIRCUIT RTL (W/COMPONENT) S742BF/WF APH F603L5K00CP D.P.CIRCUIT RTL (W/COMPONENT) S762BF/WF CPH F603L5K10CP D.P.CIRCUIT RTL (W/COMPONENT) S752BF/WF CPH F630Y5K00BAP MEMBRANE SWITCH (U) S762BF APH F630Y5K00HAP MEMBRANE SWITCH (U)
  • Page 17 Ref. No. Part No. Part Name & Description Pcs/Set Remarks F00035J00AP INSTRUCTION MANUAL S762BF/WF APH F00035J10AP INSTRUCTION MANUAL S752BF/WF APH, S742BF/WF APH F00035J00CP INSTRUCTION MANUAL S762BF/WF CPH F00035J10CP INSTRUCTION MANUAL S752BF/WF CPH F01025K00BAP PACKING CASE, PAPER S762BF APH F01025K00HAP PACKING CASE, PAPER S762WF APH F01025K20BAP PACKING CASE, PAPER S752BF APH...
  • Page 18 Ref. No. Part No. Part Name & Description Pcs/Set Remarks F030A4W00AP LEAD WIRE HARNESS S762BF/WF APH, S752BF/WF APH, S742 BF/WF APH F030A4W10CP LEAD WIRE HARNESS S762BF/WF CPH, S752BF/WF CPH F030E4T00AP H.V.LEAD WIRE S762BF/WF APH, S752BF/WF APH, S742 BF/WF APH F030E4W00CP H.V.LEAD WIRE S762BF/WF CPH, S752BF/WF CPH 11.
  • Page 20 12. DIGITAL PROGRAMMER CIRCUIT (NN-S752 APH, / NN-S742 APH) SCHEMATIC DIAGRAM...
  • Page 22 13. DIGITAL PROGRAMMER CIRCUIT PARTS LIST...
  • Page 23 Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ310 AEFBTFM571 BUZZER 2.0KHz C221 AECUU06F103Z CHIP CAPACITOR 0.01 F/50V C484 AECUU06F103Z CHIP CAPACITOR 0.01 F/50V (S762BF/WF) C343 AECUU06C101J CHIP CAPACITOR 100PF/50V C12, C340 AECUT06F104Z CHIP CAPACITOR F/25V C330 AECUU06R102K CHIP CAPACITOR 1000PF/50V C481 AECUU06F473Z...
  • Page 24 Ref. No. Part No. Part Name & Description Pcs/Set Remarks R480, R481 AERJ06J472R CHIP RESISTOR 4.7K, 1/16W, 5% (S762BF/WF) R340 AERJ06J473R CHIP RESISTOR 47K, 1/16W, 5% R486 AERJ06J684R CHIP RESISTOR 680K, 1/16W, 5% (S762BF/WF) R10, R11, R311 AERDS2TJ102T CARBON RESISTOR 1K, 1/4W, 5% R12, R180 AERDS2TJ103T...
  • Page 25 ORDER NO. SIMMC 0001002C1 Service Manual Microwave Oven MODELS Canada NN-S560BF/WF NN-S550BF/WF NN-S540BF/WF NN-L530BF NN-L530WF NN-L520WF NN-S510WF * RPH Model refer to the last page. Specifications for APH : NN-S560BF/WF NN-S550BF/WF NN-S540BF/WF NN-L530BF/WF Model: Specifications: Power Source: * 120V AC Single Phase, 60Hz Power Requirement: 1370W 1370W...

  • Page 26: Table Of Contents

    5. Any serviceman who learns of any accident pertaining to microwave radiation leakage including the oven operating with open door should immediately notify the appropriate address listed below and Center for Devices and Radiological Health, DHHS. IN U.S.A. Panasonic Services Company IN PUERTO RICO (PASC) 50 Meadowland Parkway,...
  • Page 27 DANGER OF HIGH VOLTAGE AND HIGH TEMPERATURE (HOT/LIVE) OF THE INVERTER POWER SUPPLY INVERTER WARNING This Inverter board looks like a regular PCB. However, this PCB drives the magnetron tube with extremely high voltage NEW HV and high current. IT HAS: 1. Very high voltage and high current circuits. It functions the same as the high voltage transformer and high voltage capacitor in ordinary microwave ovens.

  • Page 28: Feature Chart

    FEATURE CHART NN-S560WF NN-S550WF NN-S540WF NN-S510WF MODEL FEATURE NN-S530WF NN-S520WF Three Stage Cooking Inverter Turbo Defrost Auto Reheat Inverter Auto Cook Sensor Reheat Sensor Cook Quick Min Popcorn Timer Digital Clock CONTROL PANEL NN-S560(CPH) NN-S550 NN-S560(APH) a a a a a a a a a a Inverter Auto...
  • Page 29 CONTROL PANEL NN-S540 NN-L530 NN-L520 MN-S510 Display Windows Popcorn Pad Inverter Turbo Defrost Pad (4a) Sensor Reheat Pad (4b) Auto Reheat Pad Power Level Pad Number Pads Timer Pad Clock Pad Sensor Cook Pad (10) Inverter Auto Cooking Pads (11) Quick Min Pad (12) More /Less Pad (13) Cooking Guide (14) Auto Cook Pad...

  • Page 30: Operation And Digital Programmer Circuit Test Procedure

    OPERATION AND DIGITAL PROGRAMMER CIRCUIT TEST PROCEDURE When you pluge the power supply cord into the wall outlet, microwave oven automatically enter into the state of lb / oz. If you want to use g / kg state, please press Start pad after pluging the power source. 1.
  • Page 31 8. Auto Reheat OPERATION SCROLL DISPLAY OPERATION SCROLL DISPLAY 3. Press Serving / Weight pad. (Select 4. 6. 10. 14 slices) 1. Press Auto Reheat pad twice for two servings. 4. Press Start pad. 2. Press Start pad.Auto Reheat 4.10 cycle begins time counts down.

  • Page 32: Schematic Diagrams

    SCHEMATIC DIAGRAM (APH) SCHEMATIC DIAGRAM (APH) - 7 -...
  • Page 33 SCHEMATIC DIAGRAM (CPH) SCHEMATIC DIAGRAM (CPH) - 8 -...

  • Page 34: Description Of Operating Sequence

    DESCRIPTION OF OPERATING SEQUENCE 1. Variable power cooking control Variable Power Cooking The coil of power relay B (RY1) is energized intermittently by the digital ON-OFF TIME OF OUTPUT programmer circuit, when the oven is set at any power selection except POWER RELAY B (RY1) POWER SETTING POWER(%)
  • Page 35 4. Sensor Cooking (NN-S560BFAPH/CPH NN- AUTO SENSOR COOKING/REHEAT PROCESS S560WFAPH/CPH) Auto sensor cooking is a revolutionary way to cook by microwave without setting a power level or selecting a time. All that is necessary is to select an Auto Sensor Program before starting to cook.

  • Page 36: Cautions To Be Observed When Troubleshooting

    CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING Unlike many other appliances, the microwave oven is high-voltage, high WARNING current equipment. Though it is free from danger in ordinary use, extreme Never touch any circuit wiring with your hand nor with an care should be taken during repair.
  • Page 37 6.Confirm after repair (A) After repair or replacement of parts, make sure that the screws of the oven, etc. are neither loose nor missing. Microwaves might leak if screws are not properly tightened. (B) Make sure that all electrical connections are tight before inserting the plug into the wall outlet.

  • Page 38: Disassembly And Parts Replacement Procedure

    DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 1. Magnetron (A) Discharge the high voltage capacitors, as mentioned and shown on page 11. (B) Remove 1 screw holding air guide c to magnetron. (C) Disconnect 2 high voltage lead wires from magnetron filament terminals. (D) Remove 4 screws holding the magnetron.
  • Page 39 5. Door assembly DOOR (A) Remove door C from door E by carefully pulling outward starting from CCREEN B upper right hand corner using a flat blade screwdriver. DOOR A (B) Separate door E from tabs on door A and remove door A. DOOR (C) Open Door E at the opening angle of approximately 10°...
  • Page 40 8. Inverter Power Supply (U) CAUTIONS WHILE REPLACING INVERTER POWER SUPPLY (U) 1. Make sure to leave the grounding plate in its place. 2. Make sure to securely tighten grounding screw from the bottom of chasis (base). 3. Securely connect 3 lead wire connectors. 4.

  • Page 41: Component Test Procedure

    COMPONENT TEST PROCEDURE 5. Inverter Power Supply (U)for USA only CAUTION NEW. H.V. DO NOT try to REPAIR this H.V. Inverter power supply 1. High voltage is present at the high voltage terminal of (U).Replace as whole H.V. Inverter(U) Unit. the High Voltage Inverter (U) including aluminum heat sink during any cook cycle.
  • Page 42 6. Steam Sensor and Digital Programmer Circuit In order to determine if the steam sensor function of the digital programmer circuit is in working order or not, do the following test. 1) Place a water load (150 cc) in the oven. 2) Tap Sensor Reheat pad.

  • Page 43: Measurements And Adjustments

    MEASUREMENTS AND ADJUSTMENTS WARNING * For continued protection against radiation hazard, SWITCH replace only with identical replacement parts(For touch m o d e l s P a r t N o . A N E 6 1 4 2 - 1 4 5 0 , T y p e N o . V-16G-3C26-M for Primary latch switch;...

  • Page 44: Procedure For Measuring Microwave Energy Leakage

    PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE (B) Should the radiation leakage be more than 2 mW/cm (1mW/cm WARNING for Canada) after determining that all parts are in good Check for radiation leakage after every servicing. Should condition, functioning properly, and genuine replacement parts as listed in this manual have been used, immediately the leakage be more than 2 mW/cm (1mW/cm...

  • Page 45: Troubleshooting Guide

    TROUBLESHOOTING GUIDE CAUTION 1. Check grounding before checking for trouble. 2. Be careful of high voltage circuit. 3. Discharge high voltage capacitor. 4. When checking the continuity of the switches or the high voltage transformer,disconnect one lead wire from these parts and then check continuity with the AC plug removed.
  • Page 46 Oven does not operate and return to plugged in 1. Defective DPC Check tighten screws on escutcheon mode as soon as start pad is pressed. base bracket, D.P.C. board. Loud buzzing noise can be heard. 1. Loose fan and fan motor Turntable motor does not rotate.
  • Page 47 Troubleshooting of Inverter Circuit (U) and Magnetron NEW H.V. This oven is programmed with a self diagnostics failure code system which will help for troubleshooting. H97, H98, and H99 are the provided failure codes to indicate magnetron and inverter circuit problem areas. This section explains failure codes of H97, H98, and H99. First, you must program the DPC by pressing Clock , Time , Start , Power Level .
  • Page 48 Trouble Related to Digital Programmer Circuit SYMPTOM STEP CHECK RESULT CAUSE/CORRECTIONS No display when oven is first plugged in. Fuse pattern of DPC Normal STEP 2 Oven is dead. Open (NOTE) Shorted Circuit of ZNR, L.V.T., Oven Lamp etc. Replace DPC Low voltage transformer (LVT) Abnormal 0V ➝...

  • Page 49: Exploded View And Parts List

    EXPLODED VIEW AND PARTS LIST - 24 -...

  • Page 50: Schematic Diagram & Parts List Of Digital Programmer Circuit

    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. Pcs/ Ref.No.
  • Page 51 Pcs/ Ref.No. Part No. Part name & Description Remarks AC120V, SINGLE PHASE, 60Hz F400A4T00AP FAN MOTOR F40084T00AP FAN BLADE F40254T00AP AIR GUIDE A F41444T00AP ORIFICE F64505540AP EXHAUST GUIDE B S560*F*PH A707S4T00AP STEAM SENSOR S560*F*PH F65434T00AP SENSOR BRACKET C S560*F*PH F612E9660AP INCANDESCENT LAMP(U) 125V, 60Hz, 20W ANE6142-1450...
  • Page 52 DOOR ASSEMBLY (S-4T0) Pcs/ Ref.No. Part No. Part name & Description Remarks B3018-1480 DOOR KEY ==#A DOOR A F30014T00BAP ****BF*PH F30014T00HAP DOOR A ****WF*PH F302K4T00AP DOOR E (U) DOOR KEY SPRING B30214000AP F30854T00AP DOOR C F31454T00AP DOOR SCREEN A F31464T00BAP DOOR SCBEEN B ****BF*PH DOOR SCREEN B...
  • Page 53 ESCUTHEON BASE ASSEMBLY (S-4T0) Part name & Description Pcs/ Ref.No. Part No. Remarks S560BFAPH/S560WFAPH RTL (W/COMPONENT) F603L4T00AP D.P.CIRCUIT S560BFCPH/S560WFCPH RTL (W/COMPONENT) F603L4T00CP D.P.CIRCUIT S550BFAPH/S550WFAPH RTL (W/COMPONENT) F603L4T10AP D.P.CIRCUIT D.P.CIRCUIT S540BFAPH/S540WFAPH RTL (W/COMPONENT) F603L4T20AP F603L4T20CP D.P.CIRCUIT S540BFCPH/S540WFCPH RTL (W/COMPONENT) L530BF/WFAPH RTL (W/COMPONENT) F603L4T30AP D.P.CIRCUIT L530WF/L520WFCPH...
  • Page 54 PACKING AND ACCESORIES OVEN WALL TRAY PAD Cut into three parts when packing. FRONT VIEW ROLLER RING(U) Cut into two parts when packing. (S-4T0) Pcs/ Ref.No. Part No. Part name & Description Remarks S560BFAPH/S560WFAPH INSTRUCTION MANUAL F00034T00AP S560BFCPH/S560WFCPH INSTRUCTION MANUAL F00034T00CP S550BFAPH/S550WFAPH INSTRUCTION MANUAL...
  • Page 55 WIRING MATERIAL (S-4T0) Pcs/ Ref.No. Part No. Part name & Description Remarks LEAD WIRE HARNESS F030A4T20AP ******APH F030A4T00CP LEAD WIRE HARNESS ******CPH F030E4T00AP H.V. LEAD WIRE ******APH H.V. LEAD WIRE F030E4T00CP ******CPH - 30 -...
  • Page 56 DIGITAL PROGRAMMER CIRCUIT (NN-S560BFAPH/CPH,S560WFAPH/CPH) PARTS LIST Pcs/ Ref.No. Part No. Part name & Description Remarks BZ310 AEFB22EP20TL BUZZER 2.0KHz C12,C290,C291,C300,C301 AECUB2F104ZK CAPACITOR 0.1µF/25V C330 AECUB5C102KK CAPACITOR 0.1µF/50V C340 AECUB5F103ZK CAPACITOR 0.01µF/50V ECEA1VM471B ELECTROLYTIC CAPACITOR A 470µF/35V ECEA1CKA100B ELECTROLYTIC CAPACITOR A 10µF/16V AEEMXF01505W CONNECTOR...
  • Page 57 DIGITAL PROGRAMMER CIRCUIT (NN-S530BFAPH/CPH,S540BFAPH/CPH,S540WFAPH/CPH,L530BFAPH/CPH, L530WFAPH/CPH,L520WFAPH/CPH,L510WFAPH/CPH) PARTS LIST Pcs/ Ref.No. Part No. Part name & Description Remarks BZ310 AEFB22EP20TL BUZZER 2.0KHz C12,C290,C291,C300,C301 AECUB2F104ZK CAPACITOR 0.1MF/25V C330 AECUB5C102KK CAPACITOR 0.1MF/50V C340 AECUB5F103ZK CAPACITOR 0.01MF/50V ECA1VM471B ELECTROLYTIC CAPACITOR AL 470MF/35V ECEA1CKA100B ELECTROLYTIC CAPACITOR AL 10MF/16V AEEMXF01505W CONNECTOR...
  • Page 58 -33-...
  • Page 59 -34-...
  • Page 60 Model for Latin America & Mexico MODELS Mexico Latin America NN-S540BF/WF NN-540BF/WF * This product is based on NN-S540BF/WF APH model, the different parts are listed as followings: * Any serviceman who has any quiries or order service parts, please contact own area’s service company Pcs/ Ref.No.

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