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LG MP-3297IXC Service Manual

Light oven "solardom"
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Internal Use Only
Website: http://biz.lgservice.com
LIGHT OVEN "SolarDOM"
SERVICE MANUAL
MODEL: MP-3297IXC
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Juary, 2007
P/NO : MFL34215507
Printed in Korea

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Summary of Contents for LG MP-3297IXC

  • Page 1 Internal Use Only Website: http://biz.lgservice.com LIGHT OVEN “SolarDOM” SERVICE MANUAL MODEL: MP-3297IXC CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Juary, 2007 P/NO : MFL34215507 Printed in Korea...
  • Page 2 #EV# EXPLODED VIEW INTRODUCTION MODEL: INTERIOR PARTS CONTROL PANEL PARTS OVEN CAVITY PARTS BASE PLATE PARTS DOOR PARTS LATCH BOARD PARTS -6-1-...

  • Page 3: Door Parts

    #EV# DOOR PARTS 13581A 13552E 13213E WTP005 WPZ016 14026L 14970A 14026R WPZ016 14970A 13551E 13352A 14890A WMT015 14970C 13650A -6-2-...
  • Page 4 #EV# CONTROL PANEL PARTS 13552E 24810P 268711 24930D WTT028 24930D 24930W 268771 -6-3-...
  • Page 5 #EV# OVEN CAVITY PARTS 33651A WTT021 33550S 33112U 35026S WNZ015 333901 548101 33701A 349861 WTC008 WTP013 333902 WNZ015 36549S WNZ015 56322A 33550C WTT022 33550C 55893A 63302E 340511 WTT021 33052M WTT011 35300S WTT021 647781 948501 65238A WTT028 WTT021 -6-4-...
  • Page 6 #EV# LATCH BOARD PARTS WSZ085 WSZ085 43501L 43501R 466001 43500R 466001 43500L 466003 44510A -6-5-...
  • Page 7 #EV# INTERIOR PARTS (I) WTP013 56549B WTP007 54810C 56411A 466003 50CZZH 54810U 56851D WTT021 WSZ002 WTT021 55262E WTT021 WTT021 34930W WTT021 WTT028 56170E 33034A WTT021 35012B WNH003 34810H 535042 WNZ015 35300H WSZ002 WTT022 55300S 55810H WSZ002 WTT021 WSZ232 WTT021 34930W WTT021 56901A 55900C...
  • Page 8 Part No Description Specification Loc No 0CZZW1H003Capacitor,High Voltage 0.91UF 3% 2100V H7 50CZZH 0CZZW1H004Capacitor,High Voltage CH85210912100VAC0 50CZZH 0CZZW1H004Capacitor,High Voltage 0.91UF 3% 2100V H7 50CZZH 1MTC0502616 Screw,Machine TH + 5MM 10MM MSW WMT015 1NHA0400032 HEXAGONE 1NHA0400032 HEX 4 WNH003 1PZZW1A002 PIN,DRAWING PARALLEL 5MM 14.8M WPZ016 1SBF0402418VIS 1SBF0402418 BH + S WSZ002...
  • Page 9 SSM-16HR 220/240V 56549B 6600W1K001D 466001 6600W1K001D 466001 6877W1A619 Harness,Single 6877W1A619G 35023 268771 6901W1A001 Fuse Assembly :LG PART NUMBER 0. 56901A 6912W3B002 LAMPE 240V 25WATT 6912W3B002D 25W 2 56912B 6912W3B002 LAMPE 24025W-25 25W 240 56912B 6930W1A003 THERMOSTAT 6930W1A003G 160C 56930V 6930W1A003 THERMOSTAT...
  • Page 10 112 MEB3033980 Handle,Door EXTRUSION AL ALUM 13650A 113 MEE31336502Heater,Sheath COMPLEX 230V 50HZ 35300S 114 MEE31336602Heater,Sheath COMPLEX 230V 50HZ 55300S 115 MEG3059170 Holder,Display MOLD PP MP-906ML 24930D 116 MEG3228000 Holder,Wire MOLD PC MP-906ML 24930W 117 MEG3966570 Holder,Locker MOLD PBT PBT PULL 43500R 118 MEG3966580 Holder,Locker MOLD PBT PBT PULL 43500L 119 MEV3032600 Insulator...

  • Page 11: 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 12: Specifications

    Owner's manual & Cook book Metal tray, Rack, Steamer 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 13: 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 14: 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 15: Operating Instructions

    • While cooking with auto and manual function, you can lengthen or shorten the cooking time at any point by pressing the button (except defrost mode). LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 16: Operating Sequence

    This oven has a CHILD LOCK feature. 5. CONVECTION COOKING To Set CHILD LOCK To Cancel CHILD LOCK 6. GRILL COMBI COOKING 11. QUICK START Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 17: Schematic Diagram

    SCHEMATIC DIAGRAM LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 18: 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 19: 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 20 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 21: 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 22 2) Disconnect the leadwire from Fan Motor and lift out the rear cover assembly. Choke Cover Rear Cover Assembly Fan Motor Terminal Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 H.V. Capacitor H.V.C BKT Magnetron Magnetron Thermostat Bracket Assembly H.V. Diode Magnetron Thermostat H.V. Transformer H.V. Fuse LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 24 11) Remove the three screws holding heater sreeket. 12) Remove thhe convection heater from bracket. Convection Motor Insulator-B Assembly Convection Fan Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 4) Remove two screws holding relay PCB. 5) Remove the relay PCB from relay PCB support. Relay PCB Relay PCB Support LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 26 4) Remove the damper motor. 5) Remove the screw holding damper switch. Damper Switch Damper Motor 3) Remove the lamp from lamp assembly. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 27: 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 28: 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. 5-10 LGE Internal Use Only Only for training and service purposes...
  • Page 29 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 5-11 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 30 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.145°C Over 145°C Copyright © 2007 LG Electronics. Inc. All right reserved. 5-12 LGE Internal Use Only Only for training and service purposes...
  • Page 31 Measure the resistance. Normal: Approx. 10~20 kohm STIRRER (Ohm-meter scale: R x 1000) Abnormal: Infinite or several MOTOR ohm. (Wire leads removed) LGE Internal Use Only 5-13 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 32 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. 5-14 LGE Internal Use Only Only for training and service purposes...

  • Page 33: Trouble Shooting

    2. Use plastic wrap or lid. 3. Stir once or twice while cooking soup, cocoa or milk, etc. LGE Internal Use Only 5-15 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 34 4. Random programming when touching other pads. 5. Display is fixed at some figure and can not accept any input. Copyright © 2007 LG Electronics. Inc. All right reserved. 5-16 LGE Internal Use Only Only for training and service purposes...
  • Page 35 Lower voltage Continuity. transformer. transformer. Check continuity No continuity. Defective power Replace power of power supply supply cord. supply cord. cord. LGE Internal Use Only 5-17 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 36 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. 5-18 LGE Internal Use Only Only for training and service purposes...
  • Page 37 7 and check continuity relay 7. (Operate the unit) LGE Internal Use Only 5-19 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 38 Defective Replace No continuity. connection P.C.B Assembly. P.C.B Assembly. Between connector and P.C.B Connection then continuity. Loose connection. Assembly. tightly. Copyright © 2007 LG Electronics. Inc. All right reserved. 5-20 LGE Internal Use Only Only for training and service purposes...

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