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LG CC-3082NR Service Manual
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LG CC-3082NR Service Manual

LG CC-3082NR Service Manual

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삼
흥
정
판
MICROWAVE OVEN
SERVICE MANUAL
MODEL: CC-3082NR
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL31706206
CC-3082NSR
Internal Use Only
Website http://biz.lgservice.com
October, 2007
Printed in Korea

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Summary of Contents for LG CC-3082NR

  • Page 1 삼 흥 정 판 Internal Use Only Website http://biz.lgservice.com MICROWAVE OVEN SERVICE MANUAL MODEL: CC-3082NR CC-3082NSR CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. October, 2007 P/NO : MFL31706206 Printed in Korea...

  • Page 2: Safety Precautions

    CAUTION MICROWAVE RADIATION DO NOT BECOME EXPOSED TO RADIATION FROM THE MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Table Of Contents

    REPLACEMENT PARTS LIST - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-1 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 4: Specifications

    Rack, Metal Tray Multi Rotisserie Bar, Handle This microwave oven is designed for household use only. It is not recommended for commercial purposes. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 5: Cautions

    • NEVER put iron tools on the magnetron. BY PROPERLY QUALIFIED SERVICE • NEVER put anything into the latch hole and the PERSONNEL. interlock switches area. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 6: Installations

    L or colored red. 10cm Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 7: Operating Instructions

    10. START/QUICK START: To quickly set the cooking time directly. 11. STOP/CLEAR: Used to stop oven and clear all entries except time of day. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 8: Operating Sequence

    Desired Press Dial Start Warming time Stop/Clear Start 14. MORE AND LESS Desired Dial Stop/Clear Auto Cook (Turn right and left) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 9: Schematic Diagram

    SCHEMATIC DIAGRAM GRILL HEATER RELAY 3 CONVECTION HEATER RELAY 5 RELAY 2 CHOKE FILTER(OPTION) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 10: Circuit Description

    HEATER microwave oven as POWER LEVEL. (refer to page 1-1) • One complete cycle of relay 2 is 22 seconds. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 11: Service Information

    4 mW/cm . Always start measuring of an unknown field to assure safety for operating personnel from radiation leakage. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 12 5 mW/cm.sq. Leakage for a fully assembled oven (Before the latch switch (primary) is interrupted) with the door in a slightly opened position-less than 2 mW/cm.sq. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 13: Measurement Of Microwave Power Output

    CAUTION: DISCHARGE THE HIGH VOLTAGE control panel. CAPACITOR BEFORE SERVICING (refer to page 2-1) 3) Take off the PCB SUB ASS’Y from the control panel. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 14 Air Duct F. AIR DUCT ASSEMBLY / REMOVAL 1) Disconnect the leadwire from lamp. 2) Remove the mounting screw to the cavity. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 3) Remove the screw holding the high voltage transformer to the baseplate. Noise Filter Suction Guide H.V. Taptite Screw Capacitor H.V. Transformer Wire Leads Turntable Motor LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 16 • Tighten the mounting screw. ADJUSTMENT DIRECTION PRIMARY SWITCH MONITOR SWITCH SECONDARY SWITCH Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 17: Interlock Continuity Test

    Primary Switch Monitor Switch Secondary Switch NOTE : After checking for the continuity of switches, make sure that are correctly connected. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 18: Component Test Procedure

    Normal: Less than 1 ohm • Filament terminal 2. Measure the resistance. (Ohm-meter scale: Rx1000) Normal: Infinite • Filament to chassis Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 Some inexpensive meters may indicate infinite resistance in both direction. Measure the continuity (Reverse). Normal: Infinite. (Ohm-meter scale: Rx10000) Abnormal: Continuity. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 20 Normal: more than 0.5 Mohm NOTE: Make sure heater is fully cooled when tested. 0°C~Approx.60°C Approx.60°C MAGNETRON THERMOSTAT 0°C~Approx.145°C Approx.145°C Copyright © 2007 LG Electronics. Inc. All right reserved. 5-10 LGE Internal Use Only Only for training and service purposes...
  • Page 21 Normal: Approx. 10~20 kohm Measure the resistance. TURNTABLE Abnormal: Infinite or several (Ohm-meter scale:R x 1000) MOTOR ohm. (Wire leads removed) LGE Internal Use Only 5-11 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 22 MAKE SURE THE WIRE LEADS ARE CORRECT POSITION. WHEN REMOVING THE WIRE LEAD FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR, NOT THE WIRES. Copyright © 2007 LG Electronics. Inc. All right reserved. 5-12 LGE Internal Use Only Only for training and service purposes...

  • Page 23: Trouble Shooting (Display Shows Error Mode)

    2. Use plastic wrap or lid. characteristics. 3. Stir once or twice while cooking soup, cocoa or milk, etc. LGE Internal Use Only 5-13 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 24 3. Random programming when touching other pads. 4. Display is fixed at some figure and can not accept any input. Copyright © 2007 LG Electronics. Inc. All right reserved. 5-14 LGE Internal Use Only Only for training and service purposes...
  • Page 25 Continuity. Check continuity No continuity. Defective power Replace power of power supply supply cord. supply cord. cord. LGE Internal Use Only 5-15 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 26 NOTE: Simple test of power output-conducted by heating one liter water for one min. if available. ˚ Minimum 8.5 C temperature rise is normal condition. Copyright © 2007 LG Electronics. Inc. All right reserved. 5-16 LGE Internal Use Only Only for training and service purposes...
  • Page 27 Check H.V. Defective high Replace high Abnormal diode. voltage Diode. voltage Diode. normal Check Defective Replace Abnormal Magnetron. magnetron. magnetron. LGE Internal Use Only 5-17 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 28 * When removing the wire leads from parts be sure to grasp the connector not the wires. * When removing the magnetron, be sure to install the magnetron gasket in the correct position and in good condition. Copyright © 2007 LG Electronics. Inc. All right reserved. 5-18 LGE Internal Use Only...
  • Page 29 Normal. Defective heater Replace the Check the heater Abnormal. (Heater opened) heater Defective Replace the Normal. P.C.B. Assembly P.C.B. Assembly LGE Internal Use Only 5-19 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 30: Exploded View

    #EV# EXPLODED VIEW INTRODUCTION MODEL: OVEN CAVITY PARTS INTERIOR PARTS DOOR PARTS BASE PLATE PARTS LATCH BOARD PARTS CONTROL PANEL PARTS -6-8-...
  • Page 31 #EV# DOOR PARTS 13581A 13552A 13213A 13551A WTP013 14026A WTP037 14970A 13806A 13650A -6-9-...
  • Page 32 #EV# CONTROL PANEL PARTS 268711 23550D 268712 24781S 23572A 23550F 25020M WTP018 WTP004 249401 25020S 243501 -6-10-...
  • Page 33 #EV# OVEN CAVITY PARTS WSZ232 35264A WTT021 948501 948502 348101 56930V WTT021 35300A 34930W 36549R 348102 WTP013 34960R WNH001 34370Z WNH001 343501 34810R 33112U WTT010 33052M WTT029 34930R 35026G 36549S 33301R WTT029 WTP013 44360A 33390M 33301L 34270A 33390G 34271A 34370T 35889A 33650T -6-11-...
  • Page 34 #EV# LATCH BOARD PARTS WSZ085 43501A 466001 43500A 466003 44510A 466001 -6-12-...
  • Page 35 #EV# INTERIOR PARTS WSZ062 568771 56411A WTT021 56322A Button Head (Torx style 2) 50FZZA WTT028 568772 WSZ185 56201A 54620A 55900A 54974S WTT021 WTT037 56549F 50CZZH 56912B WSZ002 56851C 54810C WSZ002 WTT028 56324A WSZ002 WTT021 55262A 535042 55238A 36549C 56208A 535041 WTT021 WNZ015 WTT021...
  • Page 36 #EV# BASE PLATE PARTS 56170D 63302A 63303A WTT028 647781 WTT021 WTT030 WSZ002 -6-14-...

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Cc-3082nsr

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