Panasonic NN-C2000P Service Manual
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Panasonic NN-C2000P Service Manual

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NN-C2000P
NN-C2000W
© 2000 Matsushita Electric Industrial Co., Ltd. All
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reserved.
distribution is a violation of law.
MOD0009237C3

Microwave Oven

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Summary of Contents for Panasonic NN-C2000P

  • Page 1: Microwave Oven

    MOD0009237C3 Microwave Oven NN-C2000P NN-C2000W © 2000 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying distribution is a violation of law.
  • Page 2 NN-C2000P / NN-C2000W CONTENTS Page Page 1 FEATURE CHART 3 OPERATION AND DIGITAL PROGRAMMER CIRCUIT TEST 2 CONTROL PANEL PROCEDURE...

  • Page 3: Table Of Contents

    NN-C2000P / NN-C2000W 4 SCHEMATIC DIAGRAM (FOR QPQ, JPG) 13 EXPLODED VIEW AND PARTS LIST 5 SCHEMATIC DIAGRAM (FOR MNQ, YNQ, TNE, LNK, SNM, 14 PARTS LIST KNQ, KKE) 15 DOOR ASSEMBLY 6 DESCRIPTION OF OPERATING SEQUENCE 16 ESCUTCHEON BASE ASSEMBLY...
  • Page 4 NN-C2000P / NN-C2000W 1 FEATURE CHART...
  • Page 5 NN-C2000P / NN-C2000W 2 CONTROL PANEL...
  • Page 6 NN-C2000P / NN-C2000W 3 OPERATION AND DIGITAL PROGRAMMER CIRCUIT TEST PROCEDURE...

  • Page 7: Schematic Diagram (For Qpq, Jpg)

    NN-C2000P / NN-C2000W 4 SCHEMATIC DIAGRAM (FOR QPQ, JPG)

  • Page 8: Schematic Diagram (For Mnq, Ynq, Tne, Lnk, Snm Knq, Kke)

    NN-C2000P / NN-C2000W 5 SCHEMATIC DIAGRAM (FOR MNQ, YNQ, TNE, LNK, SNM, KNQ, KKE)

  • Page 9: Description Of Operating Sequence

    NN-C2000P / NN-C2000W 6 DESCRIPTION OF OPERATING SEQUENCE NOTE: When Broil feature is selected, oven temperature is 6.1. Variable power cooking determined automatically as shown in Figure. control HIGH VOLTAGE INVERTER POWER SUPPLY (U) controls output power by the signal from Digital Programmer Circuit (DPC).
  • Page 10 NN-C2000P / NN-C2000W convection, the temperatures by each program are 6.4. Combination cooking control preprogrammed in the microprocessor as shown in Figure. Combination cooking is accomplished by microwave and convection cooking being done alternately during one combination cooking cycle. One combination cooking cycle is 22 seconds.
  • Page 11 NN-C2000P / NN-C2000W Balance of cooking time (T2 time) The balance of cooking time which is called T2 time, can be calculated by the following formula. T2 time (in sec.) = T1 time × K factor NOTE: Remember, the T1 time starts after the Start pad is tapped.

  • Page 12: Cautions To Be Observed When Troubleshooting

    NN-C2000P / NN-C2000W 7 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. 7.1. Check the grounding Do not operate on a 2-wire extension cord.

  • Page 13: Confirm After Repair

    NN-C2000P / NN-C2000W lamp holes on the cavity or any other holes gaps, because such objects may work as an antenna and cause microwave leakage. 7.6. Confirm after repair 1. After repair or replacement of parts, make sure that the screws of the oven, etc.

  • Page 14: Disassembly And Parts Replacement Procedure

    NN-C2000P / NN-C2000W 8 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 8.1. Magnetron 1. Discharge the high voltage capacitor. 2. Remove 2 screws holding magnetron thermal cutout bracket. 3. Disconnect 2 high voltage lead wires from magnetron filament terminals. 4. Remove 4 screws holding the magnetron.

  • Page 15: Fan Motor

    NN-C2000P / NN-C2000W 8.4. Fan motor 1. Disconnect 2 lead wires from fan motor terminals. 2. Disconnect 2 lead wires from fuse holder terminals. (some models) 3. Remove 4 screws holding fan motor and orifice assy and detach the orifice assy with fan motor from oven assy.

  • Page 16: Turntable Motor

    NN-C2000P / NN-C2000W 2. Remove the door C from door E by carefully pulling outward starting from upper right hand corner. 3. Separate the door A from the door E by freeing 8 catch hooks on the door A. 4. Remove door key spring and door key.
  • Page 17 NN-C2000P / NN-C2000W Missing grounding is very danger.

  • Page 18: Component Test Procedure

    NN-C2000P / NN-C2000W 9 COMPONENT TEST PROCEDURE 9.3. Magnetron (NEW H.V.) Continuity checks can only indicate an open filament or a shorted magnetron. To diagnose for an open filament or shorted magnetron. 1. Isolate magnetron from the circuit by disconnecting the leads.
  • Page 19 NN-C2000P / NN-C2000W DO NOT try to REPAIR this H. V. Inverter power supply (U). 9.5. Inverter Power Supply (U) Replace as whole H. V. Inverter (U) Unit. (NEW H.V.) Refer to warning on page 2. 9.6. Inverter Power Supply (U) 9.7.
  • Page 20 NN-C2000P / NN-C2000W connector (CN6) from the DPC otherwise a false reading the microwave oven has been operating, the sensor of may be indicated. course won't be room temperature. In this case the sensor must be removed and allowed to cool down to the 50°F to NOTE 2: If checking an oven sensor thermistor just after 90°F range.

  • Page 21: Measurements And Adjustments

    NN-C2000P / NN-C2000W 10 MEASUREMENTS AND ADJUSTMENTS 10.1. 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 22: Troubleshooting Guide (New H.v.)

    NN-C2000P / NN-C2000W 11 TROUBLESHOOTING GUIDE (NEW H.V.)
  • Page 23 NN-C2000P / NN-C2000W...
  • Page 24 NN-C2000P / NN-C2000W...
  • Page 25 NN-C2000P / NN-C2000W 1. Discharge high voltage before touching Inverter PCB. 2. Remove inverter PCB from oven before troubleshooting. 1. Unplug oven and leave it for more than 30 seconds before Refer to related service manual for inverter PCB removal.
  • Page 26 NN-C2000P / NN-C2000W in reverse, it is normal. Refer to attached table for normal reading. 2. DB701 Diode Bridge 3. C704, C705 High voltage Capacitors. D702 and C705, D701 and C704 are parallel connected therefore, remove component to measure when diode is shorted.
  • Page 27 NN-C2000P / NN-C2000W 7. Apply extra solder onto Q701 and Q702 legs and printed foil pattern to be able to hold main large current of more than 15A. Service hint: For easy removal of solder, apply some solder first than suck it all.
  • Page 28 NN-C2000P / NN-C2000W...

  • Page 29: How To Check The Semiconductors Using An Ohm Meter

    NN-C2000P / NN-C2000W 12 HOW TO CHECK THE SEMICONDUCTORS USING AN OHM METER...

  • Page 30: Exploded View And Parts List

    NN-C2000P / NN-C2000W 13 EXPLODED VIEW AND PARTS LIST...

  • Page 31: Parts List

    A3020-1200 DOOR HOOK A A3136-1200 HOOK SPACER A A31374650AP HOOK SPACER B A31384650AP HOOK SPACER C A400A5500QP FAN MOTOR NN-C2000P HNE/KKE/KNQ/MNQ/SNM/TNE/YNQ NN-C2000W (24.8W) A400A4000LN FAN MOTOR NN-C2000P LNK (26W) A400K5040AQ EXHAUST GUIDE ANE40086W0AP FAN A40085020AQ A40256660QP AIR GUIDE A A40264X00AP...
  • Page 32 FUSE (10A/250V) A62304210BP FUSE (10A/250V) A62314000AP FUSE HOLDER NN-C2000P A63266660HN TURNTABLE MOTOR NN-C2000P HNE/KKE/LNK/SNM/TNE (3.3W) A63265850QP TURNTABLE MOTOR NN-C2000P KNQ/MNQ/YNQ NN-C2000W (2.5W) A6585-1B10 P.C.B.HOLDER A A66036000BP OVEN LAMP BRACKET A6662-1880 EARTH SPACER A67634X00AP P.C.B.HOLDER B A67974X00CP P.C.B.HOLDER C NN-C2000W A692Y4T00QP...

  • Page 33: Door Assembly

    A30214000AP DOOR KEY SPRING A30856660QP DOOR C A302A4X70GMN DOOR A (U) NN-C2000P HNE/LNK/MNQ/TNE/YNQ (NOTE 1) A302A4X70GKN DOOR A (U) NN-C2000P KKE/KNQ/SNM (NOTE 1) A302A4X70HQP DOOR A (U) NN-C2000W QPQ (NOTE 1) NOTE 1: Please order DHHS LABEL or CAUTION LABEL together.

  • Page 34: Escutcheon Base Assembly

    NN-C2000P / NN-C2000W 16 ESCUTCHEON BASE ASSEMBLY Ref. Part No. Part Name & Description Pcs/ Remarks A02840000MK NUMBER LABEL NN-C2000P YNQ A603Y4X70QP PC BOARD D (U) NN-C2000P NN-C2000W QPQ A605Q4X70HN PC BOARD F (U) NN-C2000P HNE (W/COMPONENT) A605Q4X70SN PC BOARD F (U)

  • Page 35: Packing And Accesories

    NN-C2000P / NN-C2000W 17 PACKING AND ACCESORIES Ref. Part No. Part Name & Description Pcs/ Remarks A000B4X70MN COOK BOOK NN-C2000P HNE/LNK/MNQ/TNE/YNQ A000B5820KN COOK BOOK NN-C2000P KKE/KNQ/SNM A00034X70HN INSTRUCTION BOOK NN-C2000P HNE/LNK/MNQ/TNE/YNQ A00034X70KN INSTRUCTION BOOK NN-C2000P KKE/KNQ/SNM A00034X70QP INSTRUCTION BOOK NN-C2000W...

  • Page 36: Wiring Material

    NN-C2000P / NN-C2000W 18 WIRING MATERIAL Ref. Part No. Part Name & Description Pcs/ Remarks A030A4X70MN LEAD WIRE HARNESS NN-C2000P A030A4X70QP LEAD WIRE HARNESS NN-C2000W A030E4X00AP LEAD WIRE NN-C2000P A030E4X00CP LEAD WIRE NN-C2000W A03509770LN LEAD WIRE NN-C2000P LNK A03536660QP LEAD WIRE AECQJ5335KRP CAPACITOR 3.3MF...

  • Page 37: Ref. No. 47 H. V. Inverter (U)

    NN-C2000P / NN-C2000W 19 REF. NO. 47 H. V. INVERTER (U) Ref. Part No. Part Name & Description Pcs/ Remarks 2SA1175TFK TRANSISTOR SI 0.25W 2SC2785TFK TRANSISTOR SI 0.25W C701 ECWF5104N300 FILM CAPACITOR 0.1MF 500VDC C702 ECQE2405T847 POLYESTER CAPACITOR 4MF 250VDC...
  • Page 38 NN-C2000P / NN-C2000W Ref. Part No. Part Name & Description Pcs/ Remarks XYN3+F8S6 SCREW 2SD2012 TRANSISTOR SI 2W 2SD2012 Q220 AESAKTA200Y TRANSISTOR SI 0.6W Q500 2SC2785TFK TRANSISTOR SI 0.25W 2SC2785TFEK Q501 AESC14EST TRANSISTOR SI 0.3W Q502 AESC23JST TRANSISTOR SI 0.3W 1.0KΩ...
  • Page 39 KKE/KNQ/SNM NN- C2000W QPQ/JPQ HOLDER A611A4J00XN DISPLAY HOLDER MN101C54CDD MN101C54C IC220 AEICU2004GR2 IC A2004G NN-C2000P HNE 10KΩ Ω Ω Ω JPR1 ERDS2TJ103T CARBON FILM RESISTOR 1/4W 5% JPR1 ERDS2TJ163T CARBON FILM RESISTOR NN-C2000P KKE/SNM 16KΩ Ω Ω Ω 1/4W 5% NN-C2000P KNQ 30KΩ...

  • Page 40: Digital Programmer Circuit

    NN-C2000P / NN-C2000W 22 DIGITAL PROGRAMMER CIRCUIT SCHEMATIC DIAGRAM...
  • Page 41 NN-C2000P / NN-C2000W...

  • Page 42: Inverter Circuit

    NN-C2000P / NN-C2000W 23 INVERTER CIRCUIT SCHEMATIC DIAGRAM...

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