Panasonic NN-K153WF Service Manual
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Panasonic NN-K153WF Service Manual

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EPG(Germany, France, Italy, Finland, Spain, Portugal, Greece,
Please file and use this specified manual together with the service
manual for Model NN-K152WF/NN-K102WF(ORDER NO.
SIMMC0203001C2).
SPECIFICATIONS
NN-K153WF / NN-K103WF / NN-K123MF
1
ORDER NO.SIMMC 0301010A2
Microwave Oven
Poland, Holland)
WPG(Switzerland)
BPQ(U.K.)

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Summary of Contents for Panasonic NN-K153WF

  • Page 1 ORDER NO.SIMMC 0301010A2 Microwave Oven NN-K153WF / NN-K103WF / NN-K123MF BPQ(U.K.) EPG(Germany, France, Italy, Finland, Spain, Portugal, Greece, Poland, Holland) WPG(Switzerland) Please file and use this specified manual together with the service manual for Model NN-K152WF/NN-K102WF(ORDER NO. SIMMC0203001C2). SPECIFICATIONS...
  • Page 2 2003 Shanghai Matsushita Microwave Oven Co., Ltd. / All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 4 1. SCHEMATIC DIAGRAM (NN-K103WF) 2. SCHEMATIC DIAGRAM (NN-K153WF, NN-K123MF)
  • Page 5 3. CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING Unlike many other appliances, the microwave oven is high-voltage, high-current equipment. Though it is free from danger in ordinary use, extreme care should be taken during repair. CAUTION Servicemen should remove their watches whenever working close to or replacing the magnetron.

  • Page 6: Check The Grounding

    3.1. Check the grounding Do not operate on a 2-wire extension cord. The microwave oven is designed to be used when grounded. It is imperative, therefore, to make sure it is grounded properly before beginning repair work. 3.2. Warning about the electric charge in the high voltage capacitor For about 30 seconds after the oven is turned off, an electric charge remains in the high voltage capacitor.When replacing or checking parts, remove the power plug from the outlet and short the terminal of the high voltage capacitor (terminal of lead wire from diode) to chassis ground...

  • Page 7: Avoid Inserting Nails, Wire, Etc. Through Any Holes In The Unit During Operation

    WARNING When the 8 Amp fuse is blown due to the operation of short switch, you must replace Primary latch switch and short switch. Also replace power relay B (RY1) when the continulty check reads shorted contacts(1-2). 1. This is mandatory. Refer to “Adjustments and Measurement” for these switches.

  • Page 8: Measurements And Adjustments

    IMPORTANT NOTICE 1.The following components have potentials above 2000V while the appliance is operated. * Magnetron * High voltage transformer * High voltage diode * High voltage capacitor Pay special attention on these portions. 2.When the appliance is operated with the door hinge or magnetron fixed incorrectly, the microwave leakage can reach more than 5mW/cm After repair or exchange, it is very important to...

  • Page 9: Measurement Of Microwave Output

    completed. Completely tighten the screws holding the door hook assembly to the oven assembly. 3. Reconnect the short switch and check the coninuity of the monitor circuit and all latch switches again by following the components test procedures. 4.2. Measurement of microwave output The output power of the magnetron can be determined by performing IEC standard test procedures.

  • Page 10: Exploded View And Parts List

    for High power and heat it for exactly one minute. 3. Stir the water again and read the temperature of the beaker. (recorded as T2). 4. The normal temperature rise at High power position for each model is as shown in table. TABLE (1L-1min.test) RATED OUTPUT TEMPERATURE RISE...
  • Page 11 specified parts. NOTE: Please order all parts from MELUK in U.K. Ref. No. Part No. Part Name & Description Pcs/Set Remarks F00064080BP CAUTION LABEL F00069000EP CAUTION LABEL EPG, WPG F10015G50XN BASE F10084T00AP RUBBER FOOT F110D5U50HBP CABINET BODY K153WF, K103WF F110D5G60SXN CABINET BODY K123MF F200A5G50XN OVEN...

  • Page 12: Door Assembly

    Ref. No. Part No. Part Name & Description Pcs/Set Remarks F66625G50XN GROUNDING PLATE F01504Y00XN NO TOUCHING LABEL EPG, WPG F61455G60XN THERMAL CUTOUT K153WF, K123MF (150°C OFF) F61455G50XN THERMAL CUTOUT K103WF (67°C ON, 77°C OFF) F0922000AE CUSHION RUBBER C F0922000EF CUSHION RUBBER C F04905U60HEP ENERGY LABEL K153WF EPG F04905U60SEP ENERGY LABEL...

  • Page 13: Wiring Materials

    Ref. No. Part No. Part Name & Description Pcs/Set Remarks F30185G10XN DOOR KEY A F30015U40HXN DOOR A K153WF, K103WF F30015U60SBP DOOR A K123MF F302K5G10XN DOOR E (U) F30215G10XN DOOR KEY SPRING F30855G10XN DOOR C F31455G10XN DOOR SCREEN A F31465U30XN DOOR SCREEN B 8.

  • Page 14: Packing And Accesories

    Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L5G60BP D.P.CIRCUIT K153WF (BPQ), K123MF (BPQ) F603L5G60EP D.P.CIRCUIT K153WF (EPG, WPG), K123MF (EPG, WPG) F630Y5U60HBP MEMBRANE SWITCH (U) K153WF (BPQ) F630Y5U60HEP MEMBRANE SWITCH (U) K153WF (EPG, WPG) F630Y5U60SBP MEMBRANE SWITCH (U) K123MF (BPQ) F630Y5U60SEP MEMBRANE SWITCH (U)
  • Page 15 Ref. No. Part No. Part Name & Description Pcs/Set Remarks F00035U50BP INSTRUCTION MANUAL K153WF (BPQ), K123MF (BPQ), K103WF (BPQ) F00035U50EP INSTRUCTION MANUAL K153WF (EPG), K123MF (EPG), K103WF (EPG) F00035U60WP INSTRUCTION MANUAL K153WF (WPG), K123MF (WPG) F01025U60HBP PACKING CASE, PAPER K153WF F01025U60SBP PACKING CASE, PAPER K123MF F01025U50HBP PACKING CASE, PAPER...
  • Page 17 12. DIGITAL PROGRAMMER CIRCUIT (NN-K153WF/ K123MF) PARTS LIST...
  • Page 18 Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ310 AEFBTFM571 BUZZER 2.0KHz AECETK1V471B AL CHEM CAPACITOR F/35V C221 AECUU06F103Z CHIP CAPACITOR 0.01 F/50V C12, C350 AECUT06F104Z CHIP CAPACITOR F/25V AEEMXH01505W CONNECTOR F03535G40XN CONNECTOR 4 PIN CX320 AEFOS800MG06 CERAMIC RESONATOR 8.00MHz AESSRCT1A6-E DIODE...
  • Page 19 ORDER NO.SIMMC 0203001C2 Microwave Oven NN-K152WF / NN-K102WF BPQ(U.K.) EPG(Germany, France, Italy, Finland, Spain, Portugal, Greece, Poland, Holland) WPG(Switzerland) SPECIFICATIONS 2002 Shanghai Matsushita Microwave Oven Co., Ltd. / All rights reserved. Unauthorized copying and distribution is a violation of...
  • Page 20 law.

  • Page 22: Feature Chart

    1. FEATURE CHART MODEL NN-K102WF NN-K152WF FEATURE Three Stage Cooking Chaos Defrost Auto Cook Grill Combination Digital Clock Child Safety Lock Timer Variable Power Control 2. CONTROL PANEL 3. OPERATION AND DIGITAL PROGRAMMER...

  • Page 23: Circuit Test Procedure

    CIRCUIT TEST PROCEDURE 3.1. To set clock OPERATION SCROLL DISPLAY 1. Plug the power supply cord into wall outlet. 2. Press [Timer/Clock] pad twice. 3. Enter time of day (TOD) by pressing appropriate [10min] , [1min] , [10sec] , pads. 4.
  • Page 24 3.3. Auto cook OPERATION SCROLL DISPLAY 1. Press [Micro Cook] pad once to select Chilled Meal. 2. Press [ ] pad to set the weight for 300g. 3. Press [Start] pad. When cooking time has Time of day or colon if elapsed, Oven beeps 5 set appears in the times and shuts off.
  • Page 25 3.5. To set child satety lock OPERATION SCROLL DISPLAY 1. Press [Start] pad 3 times continuously. "Child" appears in the display. 3.6. To reset child lock OPERATION SCROLL DISPLAY 1. Press [Stop / Reset] Time of day or colon if pad 3 times set appears in the continuously.
  • Page 26 5. SCHEMATIC DIAGRAM (NN-K152WF)

  • Page 27: Description Of Operating Sequence

    6. DESCRIPTION OF OPERATING SEQUENCE 6.1. Variable power cooking control (NN-K152WF) The coil of power relay B (RY1) is energized intermittently by the digital programmer circuit, when the oven is set at any power selection except for High power position. The digital programmer circuit controls the ON-OFF time of power relay B contacts in order to vary the output power of the microwave oven from ”Low”...
  • Page 28 The ON/OFF time ratio does not correspond with the percentage of microwave power since approximately 2 seconds are required for heating of magnetron filament. Variable Power Cooking OUTPUT ON-OFF TIME OF POWER POWER( POWER RELAY B (RY1) SETTING APPROX. ON(SEC) OFF(SEC) HIGH 100%...

  • Page 29: Cautions To Be Observed When Troubleshooting

    When those Auto Control feature is selected and the Start Pad is tapped: 1. The digital programmer circuit determines the power level and cooking time to complete cooking and indicates the operating state in the display window. / Table shows the corresponding cooking times for respective serving or weight by categories.
  • Page 30 WARNING There is high-voltage present, with high-current capabilities in the circuits of the high voltage winding and filament winding of the high voltage transformer. It is extremely dangerous to work on or near these circuits with oven energized. / DO NOT measure the voltage in the high voltage circuit including filament voltage of magnetron.
  • Page 31 3. When replacing faulty switches, be sure mounting tabs are not bent, broken or otherwise deficient in their ability to hold the switches. 7.5. Avoid inserting nails, wire, etc. through any holes in the unit during operation. Never insert a wire, nail or any other metal object through the lamp holes on the cavity or any other holes or gaps, because such objects may work as an antenna and cause microwave leakage.

  • Page 32: Disassembly And Parts Replacement Procedure

    CAUTION Please use caution when unpacking, installing or moving the unit, as some exposed edges may be sharp to touch and cause injury if not handled with care. 8. DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 8.1. Magnetron 1. Discharge the high voltage capacitor. 2.
  • Page 33 8.2. Digital programmer circuit (DPC) and membrane key board. NOTE: Before handing the DPC ensure that your body is connected to ground to discharge any electric charge. 1. Disconnect all connectors from D.P.C. 2. Remove 1 screw holding escutcheon base and slide the escutcheon base upward slightly.

  • Page 34: Low Voltage Transformer And/Or Power Relays (Ry1, Ry2)

    problems (shorted contacts or uneven surface) can be avoided. / 3. Alignment position of membrane key board is as follows; / Membrane key board: Right and upper edges / Escutcheon sheet: Right and upper edges 8.3. Low voltage transformer and/or power relays (RY1, RY2) NOTE: Be sure to ground any static electric charge built up on your body before handling the DPC.
  • Page 35 8.4. Timer 1. Disconnect all lead wires from timer. 2. Remove a screw holding escutcheon base and slide the escutcheon base upward slightly. 3. Remove 3 screws to remove timer. 4. Remove two knobs from timer shaft. NOTE: Knobs can not be removed from front. Do not try to remove knobs with fully assembled oven.
  • Page 36 1. Remove door C from door E by carefully pulling outward starting from upper right hand corner using a flat blade screwdriver. 2. Separate door E from tabs on door A and remove door A. 3. Remove door screen B from door A. 4.
  • Page 37 by the arrows with a cutter. NOTE: After breaking off the motor cover, make sure that cut-off portions are properly trimmed off or bent to inside so that no sharp edges will be exposed to the outside. 2. Disconnect 2 lead wires connected to the turntable motor. 3.

  • Page 38: Component Test Procedure

    9. COMPONENT TEST PROCEDURE CAUTION 1. High voltage is present at the high voltage terminal of the high voltage transformer 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 oven from its power source and discharge the high voltage capacitor.
  • Page 39 should be as follows. 9.2. Short switch & monitor 1. Unplug lead wires from H.V.transformer primary terminals. 2. Connect test probes of ohm meter to the disconnected leads of the H.V. Transformer. 3. Test the continuity of short switch with door opened and closed positions using lowest scale of the ohm meter.
  • Page 40 4. An open capacitor will show constant 9M . 5. Resistance between each terminal and chassis should be infinite. 9.5. Magnetron Continuity checks can only indicate an open filament or a shorted magnetron. To diagnose for an open filament or shorted magnetron: 1.

  • Page 41: Membrane Key Board (Membrane Switch Assembly)

    infinite in one direction and several hundred K in the other direction. 9.7. Membrane key board (Membrane switch assembly) Check continuity between switch terminals, by tapping an appropriate pad on the key board. The contacts assignment of the respective pads on the key board is as shown in digital programmer circuit.
  • Page 42 1. When mounting Primary latch switch,Secondary latch switch and short switch to door hook assembly, mount the Primary latch swith, the Secondary latch switch and the short switch to the door hook assembly as shown in table. NOTE: No specific adjustment during installation of Primary latch switch,Secondary latch switch and short switch to the door hook is necessary.

  • Page 43: Troubleshooting Guide

    the magnetron using the simple method outlined below. Necessary Equipment: - 1 liter beaker - Glass thermometer - Wrist watch or stopwatch NOTE: Check the line voltage under load.Low voltage will lower the magnetron output. Take the temperature readings and heating time as accurately as possible.
  • Page 44 find the exact cause of any trouble. 11.1. Digital programmer circuit troubleshooting guide...
  • Page 45 11.2. How to check the semiconductors using an OHM meter 12. EXPLODED VIEW AND PARTS LIST...
  • Page 46 13. 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 47 Ref. No. Part No. Part Name & Description Pcs/Set Remarks F00075G60HBP NAME PLATE K152WF BPQ F00075G60HEP NAME PLATE K152WF EPG F00075G60HWP NAME PLATE K152WF WPG F00075G50HBP NAME PLATE K102WF BPQ F00075G50HEP NAME PLATE K102WF EPG F10015G50XN BASE F10084T00AP RUBBER FOOT F110D5G50HXN CABINET BODY F200A5G50XN OVEN...
  • Page 48 Ref. No. Part No. Part Name & Description Pcs/Set Remarks F61455G60XN THERMAL CUTOUT K152WF F61455G50XN THERMAL CUTOUT K102WF F0922000AE CUSHION RUBBER C F0922000EF CUSHION RUBBER C 14. DOOR ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks F30185G10XN DOOR KEY A F30015G10HMN DOOR A F302K5G10XN...
  • Page 49 Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L5G60BP D.P.CIRCUIT K152WF (BPQ) F603L5G60EP D.P.CIRCUIT K152WF (EPG, WPG) F630Y5G60HBP MEMBRANE SWITCH (U) K152WF (BPQ) F630Y5G60HEP MEMBRANE SWITCH (U) K152WF (EPG, WPG) F80345G40HHN ESCUTCHEON BASE K152WF F66174T00AP DISPLAY TUBE COVER K152WF A67004T00AP RUBBER CONNECTOR...
  • Page 50 Ref. No. Part No. Part Name & Description Pcs/Set Remarks F030A5G60BP LEAD WIRE HARNESS K152WF F030A5G50BP LEAD WIRE HARNESS K102WF 17. PACKING AND ACCESORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks F00035G50BP INSTRUCTION MANUAL F00035G50EP INSTRUCTION MANUAL F00035G60WP INSTRUCTION MANUAL F01025G60HBP PACKING CASE, PAPER...

  • Page 52: Digital Programmer Circuit

    19. DIGITAL PROGRAMMER CIRCUIT PARTS LIST...
  • Page 53 Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ310 AEFBTFM571 BUZZER 2.0KHz AECETK1V471B AL CHEM CAPACITOR F/35V C221 AECUU06F103Z CHIP CAPACITOR 0.01 F/50V C12, C350 AECUT06F104Z CHIP CAPACITOR F/25V AEEMXF01505W CONNECTOR F03535G40XN CONNECTOR 4 PIN CX320 AEFOS800MG06 CERAMIC RESONATOR 8.00MHz AEDNERA1502 DIODE...

This manual is also suitable for:

Nn-k103wfNn-k123mf

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