LG SolarDOM MP9485FR Service Manual
LG SolarDOM MP9485FR Service Manual

LG SolarDOM MP9485FR Service Manual

Light oven
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Internal Use Only
Website: http://biz.lgservice.com
LIGHT OVEN "SolarDOM"
SERVICE MANUAL
MODEL: MP9485FR
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
March, 2010
P/NO : MFL62270002
Printed in Korea

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Summary of Contents for LG SolarDOM MP9485FR

  • Page 1 Internal Use Only Website: http://biz.lgservice.com LIGHT OVEN “SolarDOM” SERVICE MANUAL MODEL: MP9485FR CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. March, 2010 P/NO : MFL62270002 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

    High rack, Low rack Metal tray, Rotisserie This 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

    The wire which is colored brown must be connected 10cm to the terminal in the plug which is marked with the letter L or colored red. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7: Operating Instructions

    7. Display Window: You can show time of day, cooking time, power level and cooking categories. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 8: Operating Sequence

    Start/Quick Start 5. CONVECTION COOKING To cook Turn Dial Stop/ Desired convection Convection Clear temp(40°C, 100°C~250°C) Desired Enter cooking Start time Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9: Schematic Diagram

    SCHEMATIC DIAGRAM LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 10: Circuit Description

    • The micom controller controls the ON-OFF time of relay 4 by the applied signal to vary the average output 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

    2) Disconnect two terminals, and remove one screw of the earth terminal. CAUTION: DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE SERVICING (refer to page 2-1) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 14 If the door assembly is not mounted properly, microwaves may leak from the clearance between the door and the oven. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 1. Remove the wire lead from the turntable motor VERY CAREFULLY. 2. Be sure to grasp the connector, not the wires, when removing Taptite Screw Wire Leads Turntable Motor LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 16 • Adjust the latch board in the arrow direction so that oven door will not have any play in it when the door is closed. • Tighten the mounting screw. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 1) Remove the heater holder and halogen heater. Chamber-U Ring Gasket Heater Bracket Upper Sheath Heater Lower Sheath Heater Insulator-U Air-Tunnel-U LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 18: Interlock Continuity Test

    Primary Switch Monitor Switch Secondary Switch NOTE : After checking for the continuity of switches, make sure that are correctly connected. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19: Component Test Procedure

    Normal: Less than 1 ohm • Filament terminal 2. Measure the resistance. (Ohm-meter scale: Rx1000) Normal: Infinite • Filament to chassis LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 20 Some inexpensive meters may indicate infinite resistance in both direction. Measure the continuity (Reverse). Normal: Infinite. (Ohm-meter scale: Rx10000) Abnormal: Continuity. Copyright © 2007 LG Electronics. Inc. All right reserved. 5-10 LGE Internal Use Only Only for training and service purposes...
  • Page 21 NOTE: Make sure heater is fully cooled when tested. OVEN Thermostat 0°C~160°C 160°C MAGNETRON and OVEN THERMOSTAT M.G.T Thermostat 60°C~Approx.110°C Over 110°C LGE Internal Use Only 5-11 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 22 Measure the resistance. Normal: Approx. 10~20 kohm TURNTABLE (Ohm-meter scale: R x 1000) Abnormal: Infinite or several MOTOR ohm. (Wire leads removed) Copyright © 2007 LG Electronics. Inc. All right reserved. 5-12 LGE Internal Use Only Only for training and service purposes...
  • Page 23 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. LGE Internal Use Only 5-13 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 24: Trouble Shooting

    2. Use plastic wrap or lid. 3. Stir once or twice while cooking soup, cocoa or milk, etc. Copyright © 2007 LG Electronics. Inc. All right reserved. 5-14 LGE Internal Use Only Only for training and service purposes...
  • Page 25 4. Random programming when touching other pads. 5. Display is fixed at some figure and can not accept any input. LGE Internal Use Only 5-15 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 26 Lower voltage Continuity. transformer. transformer. Check continuity No continuity. Defective power Replace power of power supply supply cord. supply cord. cord. Copyright © 2007 LG Electronics. Inc. All right reserved. 5-16 LGE Internal Use Only Only for training and service purposes...
  • Page 27 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. LGE Internal Use Only 5-17 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 28 Check H.V. Defective high Replace high Abnormal diode. voltage Diode. voltage Diode. normal Check Defective Replace Abnormal Magnetron. magnetron. magnetron. Copyright © 2007 LG Electronics. Inc. All right reserved. 5-18 LGE Internal Use Only Only for training and service purposes...
  • Page 29 * When removing the magnetron, be sure to install the magnetron gasket in the correct position and in good condition. 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: INTERIOR PARTS CONTROL PANEL PARTS OVEN CAVITY PARTS BASE PLATE PARTS LATCH BOARD PARTS DOOR PARTS MAY000 MFL552 MAX171 -6-1-...
  • Page 31: Door Parts

    #EV# DOOR PARTS 13581A 13552A 13213E WPZ016 WTP002 140262 14970A 140261 WPZ016 14970A WTT051 14891A 14980A 13650A -6-2-...
  • Page 32 #EV# CONTROL PANEL PARTS WTT028 268711 24781S 24810L WTT028 24810R WTP004 24980A 268712 WTP004 250201 249401 23551A 250201 -6-3-...
  • Page 33 #EV# OVEN CAVITY PARTS 35026C 33301L 33301R 34270A 33650T 34271A 35026G WTT021 95001A 33112U WTT029 33390M 34370T WTT022 WTT029 WNZ015 WTT022 34930R 34681R WSZ092 34810R 34370Z 33052M 36549R 348101 WSZ094 34960R WTP013 343501 WNZ015 353001 368771 36549S WTP013 63302A 54790A WTT028 647781 WTT028...
  • Page 34 #EV# LATCH BOARD PARTS WSZ085 WSZ085 43501L 43501R 466001 43500R 466001 43500L 466003 44510A -6-5-...
  • Page 35 #EV# INTERIOR PARTS (I) WTT028 55264A 353002 53550L 56324A 56912B 948502 WSZ002 WTT021 34890C WSZ085 WTT028 350122 33034A 348102 WTT021 552652 35300H WTT021 WSZ085 552651 -6-6-...
  • Page 36 #EV# INTERIOR PARTS (II) WT P 0 0 2 WSZ002 5 6 9 3 0 V WS Z 0 0 2 5 6 9 0 1 A WTT021 9 4 8 5 0 1 54810A 34930W W S Z 0 0 2 WTT028 W T P 0 0 2 5 6 1 7 0 D W T T 0 2 1...

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