Panasonic NE-3280 Service Manual
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Panasonic NE-3280 Service Manual

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NE-3280
NE-3240
NE-2180
NE-2140
© 2001 Matsushita Electric Industrial Co., Ltd. All
rights
reserved.
distribution is a violation of law.
ORDER NO. MOD0108245C2

Microwave Oven

Unauthorized
copying
and

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Summary of Contents for Panasonic NE-3280

  • Page 1: Microwave Oven

    ORDER NO. MOD0108245C2 Microwave Oven NE-3280 NE-3240 NE-2180 NE-2140 © 2001 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying distribution is a violation of law.

  • Page 2: Table Of Contents

    NE-3280 / NE-3240 / NE-2180 / NE-2140 CONTENTS Page Page 1 OUTLINE DIAGRAM 14 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 19 2 OPERATION PROCEDURE (NE-3280/2180) 15 COMPONENT TEST PROCEDURE 3 OPERATION PROCEDURE (NE-3240/2140) 16 MEASUREMENTS AND ADJUSTMENTS 4 SCHEMATIC DIAGRAM NE-3280...

  • Page 3: Outline Diagram

    NE-3280 / NE-3240 / NE-2180 / NE-2140 1 OUTLINE DIAGRAM...
  • Page 4 NE-3280 / NE-3240 / NE-2180 / NE-2140...

  • Page 5: Operation Procedure (Ne-3280/2180)

    NE-3280 / NE-3240 / NE-2180 / NE-2140 2 OPERATION PROCEDURE (NE-3280/2180)
  • Page 6 NE-3280 / NE-3240 / NE-2180 / NE-2140...
  • Page 7 NE-3280 / NE-3240 / NE-2180 / NE-2140...

  • Page 8: Operation Procedure (Ne-3240/2140)

    NE-3280 / NE-3240 / NE-2180 / NE-2140 3 OPERATION PROCEDURE (NE-3240/2140)

  • Page 9: Schematic Diagram Ne-3280

    NE-3280 / NE-3240 / NE-2180 / NE-2140 4 SCHEMATIC DIAGRAM NE-3280...

  • Page 10: Schematic Diagram Ne-3240

    NE-3280 / NE-3240 / NE-2180 / NE-2140 5 SCHEMATIC DIAGRAM NE-3240...

  • Page 11: Schematic Diagram Ne-2180

    NE-3280 / NE-3240 / NE-2180 / NE-2140 6 SCHEMATIC DIAGRAM NE-2180...

  • Page 12: Schematic Diagram Ne-2140

    NE-3280 / NE-3240 / NE-2180 / NE-2140 7 SCHEMATIC DIAGRAM NE-2140...

  • Page 13: Wiring Diagram Ne-3280

    NE-3280 / NE-3240 / NE-2180 / NE-2140 8 WIRING DIAGRAM NE-3280...

  • Page 14: Wiring Diagram Ne-3240

    NE-3280 / NE-3240 / NE-2180 / NE-2140 9 WIRING DIAGRAM NE-3240...

  • Page 15: Wiring Diagram Ne-2180

    NE-3280 / NE-3240 / NE-2180 / NE-2140 10 WIRING DIAGRAM NE-2180...

  • Page 16: Wiring Diagram Ne-2140

    NE-3280 / NE-3240 / NE-2180 / NE-2140 11 WIRING DIAGRAM NE-2140 12 DESCRIPTION OF OPERATING SEQUENCE...
  • Page 17 NE-3280 / NE-3240 / NE-2180 / NE-2140 Variable power cooking control shown in table. The coil of power relays are energized intermittently by the NOTE digital programmer circuit, when the oven is set at any power ON-OFF time of power relays are changed by digital selection except for High power position.

  • Page 18: Cautions To Be Observed When Troubleshooting

    NE-3280 / NE-3240 / NE-2180 / NE-2140 13 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.

  • Page 19: Disassembly And Parts Replacement Procedure

    NE-3280 / NE-3240 / NE-2180 / NE-2140 lamp holes on the cavity or any other holes or gaps, because 13.4. When parts must be replaced, such objects may work as an antenna and cause microwave always remove the power plug leakage.
  • Page 20 NE-3280 / NE-3240 / NE-2180 / NE-2140 it from main unit then remove connectors. 3. Remove 2 screws holding the D.P.C. board and remove the board by freeing catch hooks. NOTE Please use care in handling the power supply P.C.B.
  • Page 21 NE-3280 / NE-3240 / NE-2180 / NE-2140 14.5. Upper antenna (Right and Left) Upper antenna (Right and Left) 1. Remove 8 plastic clips holding ceiling plate and exhaust guides by using flat screwdriver or the like. 2. Remove 2 screws holding upper antenna assy by inserting screwdriver through the opening on the antenna as shown in figure.

  • Page 22: Component Test Procedure

    NE-3280 / NE-3240 / NE-2180 / NE-2140 2. To remove the lower antenna motor, carefully place the unit on its left side. 3. Remove the motor cover by removing 2 screws and follow same procedure as for upper antenna. CAUTION There are two types of antenna motors Therefore please replace with correct one as showing below.
  • Page 23 NE-3280 / NE-3240 / NE-2180 / NE-2140 appropriate pad on the key board. The contacts assignment of the respective pads on the key board is as shown in digital programmer circuit. 15.6. Protector diode 1. Isolate the protector diode assembly from the circuit by disconnecting its leads.

  • Page 24: Measurements And Adjustments

    NE-3280 / NE-3240 / NE-2180 / NE-2140 16 MEASUREMENTS AND ADJUSTMENTS 16.1. Adjustment of the safety switch B (Right and Left side) 1. Switch operation When the door is slightly opened, the safety switch B opens the main circuit. The movement of the door from the closed...

  • Page 25: Troubleshooting Guide

    If the unit shows faulty symptom as shown below, check the parts listed in possible cause column depending on failure indication e.g. F81, F82 in the display. [TROUBLE] Oven does not operate at all or oven does not start cooking. NE-3280, NE-3240 DISPLAY...
  • Page 26 NE-3280 / NE-3240 / NE-2180 / NE-2140 DISPLAY CONDITIONS POSSIBLE CAUSE TIMING OF FAILURE INDICATION Short temperature 1. Temperature sensor failure It is appeared when failure occurred. sensor (exhaust) 2. Digital programmer circuit failure 1. Shorted power select switch It is appeared 2 minutes after failure occurred.
  • Page 27 NE-3280 / NE-3240 / NE-2180 / NE-2140 DISPLAY CONDITIONS POSSIBLE CAUSE TIMING OF FAILURE INDICATION No display 1.25/3A fuse is OK 1. Thermal cutout failure 2. Low voltage transformer failure 3. Digital programmer circuit failure No voltage supply to 1. Relay failure RY-3 (A) It is appeared when failure occurred.

  • Page 28: Exploded View And Parts List

    NE-3280 / NE-3240 / NE-2180 / NE-2140 18 EXPLODED VIEW AND PARTS LIST...

  • Page 29: Disassembly And Parts Replacement

    NE-3280 / NE-3240 / NE-2180 / NE-2140 lamp holes on the cavity or any other holes or gaps, because 13.4. When parts must be replaced, such objects may work as an antenna and cause microwave always remove the power plug leakage.
  • Page 30 NE-3280 / NE-3240 / NE-2180 / NE-2140 it from main unit then remove connectors. 3. Remove 2 screws holding the D.P.C. board and remove the board by freeing catch hooks. NOTE Please use care in handling the power supply P.C.B.
  • Page 31 NE-3280 / NE-3240 / NE-2180 / NE-2140 14.5. Upper antenna (Right and Left) Upper antenna (Right and Left) 1. Remove 8 plastic clips holding ceiling plate and exhaust guides by using flat screwdriver or the like. 2. Remove 2 screws holding upper antenna assy by inserting screwdriver through the opening on the antenna as shown in figure.

  • Page 32: High Voltage Transformer

    NE-3280 / NE-3240 / NE-2180 / NE-2140 2. To remove the lower antenna motor, carefully place the unit on its left side. 3. Remove the motor cover by removing 2 screws and follow same procedure as for upper antenna. CAUTION There are two types of antenna motors Therefore please replace with correct one as showing below.
  • Page 33 NE-3280 / NE-3240 / NE-2180 / NE-2140 appropriate pad on the key board. The contacts assignment of the respective pads on the key board is as shown in digital programmer circuit. 15.6. Protector diode 1. Isolate the protector diode assembly from the circuit by disconnecting its leads.
  • Page 34 NE-3280 / NE-3240 / NE-2180 / NE-2140 16 MEASUREMENTS AND ADJUSTMENTS 16.1. Adjustment of the safety switch B (Right and Left side) 1. Switch operation When the door is slightly opened, the safety switch B opens the main circuit. The movement of the door from the closed...
  • Page 35 If the unit shows faulty symptom as shown below, check the parts listed in possible cause column depending on failure indication e.g. F81, F82 in the display. [TROUBLE] Oven does not operate at all or oven does not start cooking. NE-3280, NE-3240 DISPLAY...
  • Page 36 NE-3280 / NE-3240 / NE-2180 / NE-2140 DISPLAY CONDITIONS POSSIBLE CAUSE TIMING OF FAILURE INDICATION Short temperature 1. Temperature sensor failure It is appeared when failure occurred. sensor (exhaust) 2. Digital programmer circuit failure 1. Shorted power select switch It is appeared 2 minutes after failure occurred.
  • Page 37 NE-3280 / NE-3240 / NE-2180 / NE-2140 DISPLAY CONDITIONS POSSIBLE CAUSE TIMING OF FAILURE INDICATION No display 1.25/3A fuse is OK 1. Thermal cutout failure 2. Low voltage transformer failure 3. Digital programmer circuit failure No voltage supply to 1. Relay failure RY-3 (A) It is appeared when failure occurred.
  • Page 38 NE-3280 / NE-3240 / NE-2180 / NE-2140 18 EXPLODED VIEW AND PARTS LIST...

  • Page 39: Parts List

    NE-3280 / NE-3240 / NE-2180 / NE-2140 19 PARTS LIST NOTE When ordering replacement part(s), please use part number(s) shown in this parts list. Do not use description of the part. Importan safety notice: Components identified by mark have special characteristics important for safety.
  • Page 40 NE-3280 / NE-3240 / NE-2180 / NE-2140 Ref. No. Part No. Part Name & Description Pcs/Set Remarks ANE00062Q0EP CAUTION LABEL FOR EUG A00333030GP FUSE LABEL NE-3240 A00333A60BP FUSE LABEL NE-2180 ANE0033P10GN FUSE LABEL NE-2140 A010T3030GP SHELF A02393A80BP CORD LABEL NE-3280,NE-2180...
  • Page 41 NE-3280 / NE-3240 / NE-2180 / NE-2140 Ref. No. Part No. Part Name & Description Pcs/Set Remarks ANE0922000AR CUSHION RUBBER C ANE0922000AR CUSHION RUBBER C ANE0922000JE CUSHION RUBBER C ANE0923000AV CUSHION RUBBER C ANE0923000AV CUSHION RUBBER C ANE0923000AV CUSHION RUBBER C...
  • Page 42 NE-3280 / NE-3240 / NE-2180 / NE-2140 Ref. No. Part No. Part Name & Description Pcs/Set Remarks ANE3157-610 PACKING RUBBER A31863A40BP DOOR PANEL NE-3280 A31863A50EU DOOR PANEL NE-3240 A31863A60BP DOOR PANEL NE-2180 A31863A70EU DOOR PANEL NE-2140 A32493030GP DOOR SWITCH LEVER...
  • Page 43 NE-3280 / NE-3240 / NE-2180 / NE-2140 Ref. No. Part No. Part Name & Description Pcs/Set Remarks A61454210AP THERMAL CUTOUT FOR MAGNETRON ANE61522QOBP SOCKET A61583030GP DOOR SWITCH A RIGHT(MONITOR SWITCH) A61583050GP DOOR SWITCH B LEFT(MONITOR SWITCH) A61703030GP INSULATION SHEET B...
  • Page 44 NE-3280 / NE-3240 / NE-2180 / NE-2140 Ref. No. Part No. Part Name & Description Pcs/Set Remarks XTEANE5+10B SCREW 5X10(FOR ROLLER BRACKET) XTWANE4+10RU SCREW 4X10(FOR LOWER MAGNETRON) XTWANE4+10RU SCREW 4X10(FOR LOWER MAGNETRON) XTWANE4+10RU SCREW 4X10(FOR LOWER MAGNETRON) XTWANE4+10RU SCREW 4X10(FOR LOWER MAGNETRON)

  • Page 45: Door Assemble

    NE-3280 / NE-3240 / NE-2180 / NE-2140 20 DOOR ASSEMBLE Ref. No. Part No. Part Name & Description Pcs/Set Remarks A30033030GP DOOR FRAME A30043030GP DOOR ARM A30043030GP DOOR ARM A301A3030GP DOOR A A302K3030GP DOOR E(U) ANE3009P00RN DOOR SPRING ANE3009P00RN DOOR SPRING...

  • Page 46: Escutcheon Base Assemble

    NE-3280 / NE-3240 / NE-2180 / NE-2140 21 ESCUTCHEON BASE ASSEMBLE...
  • Page 47 NE-3280 / NE-3240 / NE-2180 / NE-2140 Ref. No. Part No. Part Name & Description Pcs/Set Remarks A03613560GP TIMER A03613560GP TIMER ANE1062-8U0 CUSHION RUBBER B NE-3240,NE-2140 A603L3560GP D.P.CIRCUIT(U) NE-3240 RTL(W/COMPONENT) A603L3590GP D.P.CIRCUIT(U) NE-3280,NE-2180 RTL(W/COMPONENT) A603L3A70EU D.P.CIRCUIT(U) NE-2140 RTL(W/COMPONENT) A608C2560GP POWER SELECT SWITCH...

  • Page 48: Packing And Accessories

    NE-3280 / NE-3240 / NE-2180 / NE-2140 22 PACKING AND ACCESSORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks A00033A40BP INSTRUCTION BOOK NE-3280,NE-2180 A00033A50EU INSTRUCTION BOOK NE-3240,NE-2140 A01723560BP CAUTION LABEL A01023A60BP PACKING CASE,PAPER NE-2180 A01023A70EU PACKING CASE,PAPER NE-2140...

  • Page 49: Wiring Material

    NE-3280 / NE-3240 / NE-2180 / NE-2140 23 WIRING MATERIAL...
  • Page 50 NE-3280 / NE-3240 / NE-2180 / NE-2140...
  • Page 51 NE-3280 / NE-3240 / NE-2180 / NE-2140 Ref. No. Part No. Part Name & Description Pcs/Set Remarks A030A3560BP LEAD WIRE HARNESS NE-3280 A030A3580GP LEAD WIRE HARNESS NE-2180 A030A3A50EU LEAD WIRE HARNESS NE-3240 A030A3A70EU LEAD WIRE HARNESS NE-2140 A03603560GP LEAD WIRE...
  • Page 52 NE-3280 / NE-3240 / NE-2180 / NE-2140 Ref. No. Part No. Part Name & Description Pcs/Ser Remarks CN551 ERDS2TJ184T CARBON FILM RESISTOR 180KΩ Ω Ω Ω ,1/4W,5% CN551 ERDS2TJ103T CARBON FILM RESISTOR 10KΩ Ω Ω Ω ,1/4W,5% REF NO.112 NOISE FILTER (U)

  • Page 53: Digital Programmer Circuit

    NE-3280 / NE-3240 / NE-2180 / NE-2140 24 DIGITAL PROGRAMMER CIRCUIT...

  • Page 54: Digital Programmer Circuit

    NE-3280 / NE-3240 / NE-2180 / NE-2140 25 DIGITAL PROGRAMMER CIRCUIT PARTS LIST...
  • Page 55 NE-3280 / NE-3240 / NE-2180 / NE-2140 Ref. No. Part No. Description Pcs/set Remarks C10,12,13,15,16,17 AECF50F104Z CERAMIC CAPACITOR 0.1MF/50V ,19,22,26,29 ECA1HM221B ELECTROLYTIC CAPACITOR,AL 220MF/50V ECEA1CKA100B ELECTROLYTIC CAPACITOR,AL 10MF/16V ECEA1HKA2R2B ELECTROLYTIC CAPACITOR,AL 2.2MF/50V C20,C21,C23,C24,C2 ECBT1E103ZF5 CERAMIC CAPACITOR 0.01MF/25V 7,C28 ECBT1H101KB5 CERAMIC CAPACITOR 0.0001MF/50V...

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Ne-3240Ne-2180Ne-2140

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