Related Manuals for LG MC3283FMPG
Summary of Contents for LG MC3283FMPG
- Page 1 삼 흥 정 판 MODEL: MC3283FMPG CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. August, 2014 Printed in India...
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Page 2: Safety Precautions
IS IMPROPERLY USED OR CONNECTED.ALL ELECTRICAL CONNECTIONS,WAVEGUIDES DOOR AND GASKETS MUST BE SECURE.NEVER OPERATE THE DEVICE WITHOUT A MICROWAVE ENERGY ABSORBING LOAD WITHIN IT. Copyright © 2009 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 © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 4: Specifications
Single Rotisserie and Rotisserie Handle Milk Pasteurization Kit This microwave oven is designed for household use only. It is not recommended for commercial purposes. Copyright © 2009 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. • NEVER put anything into the latch hole and the PERSONNEL. interlock switches area. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 6: Installations
L or colored red. 10cm Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 7: Operating Instructions
Glass tray Rotating Ring High Rack Low Rack Rotisserie Bar Rotisserie Bar Handle STOP/CLEAR Energy Saving This feature allows to save energy. LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 8: Operating Sequence
(Turn right and left) Select Desired Press Stop/Clear Conv. combi cooking level Dial Desired Conv. temp Press Desired Start (100°C~230°C) Dial cooking time Copyright © 2009 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 © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... -
Page 10: Circuit Description
POWER LEVEL. (refer to page 1-1) • One complete cycle of relay 2 is 22 seconds. Copyright © 2009 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 © 2009 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 © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
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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 © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes... - Page 14 2) Disconnect the leadwire from magnetron, high voltage transformer, and capacitor. 3) Remove the screw holding the high voltage Magnetron transformer to the baseplate. Air Duct Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 15 2. Be sure to grasp the connector, not the wires, when removing. Suction Guide H.V. Transformer H.V. Capacitor Taptite Screw Wire Leads Turntable Motor LGE Internal Use Only Copyright © 2009 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 © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
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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 © 2009 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 © 2009 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. Normal: Infinite. Measure the continuity (Reverse). (Ohm-meter scale: Rx10000) Abnormal: Continuity. LGE Internal Use Only Copyright © 2009 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.145°C Over 145°C OVEN THERMOSTAT MAGNETRON THERMOSTAT 5-10 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 21 • MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION. • WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR, NOT THE WIRES. 5-11 LGE Internal Use Only Copyright © 2009 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. 5-12 Copyright © 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 23 8. Service Flow Chart Failure symptoms Failure modes: No- Power (No Display) - The display will not be ON. - No power. Measure the outlet (supply) voltage after disconnecting power cord Voltage Poor input volatge supply AC 230V Measure the voltage across the outlet Multi-outlet Voltage...
- Page 24 Check the fuse with a multimeter at both ends Abnormal Normal Normal Replace fuse Measure resistance across the ends of magnetron Thermostat with a multimeter Abnormal Normal Replace the magnetron Normal thermostat Measure resistance across the ends of oven Thermostat with a multimeter Abnormal Normal Replacing the oven Thermo stat...
- Page 25 Check the PCB connector connection Connector Adjust the connector loose Check the continuity between power cord terminals and PCB connector CN1 terminals with a Multimeter Abnormal Normal (1) Measure Power Cord terminal connection with CN1 Pin 1 (2) Measure Power Cord terminal connection with CN1 Pin 13 Normal Replace Harness Visually check the connection status of...
- Page 26 Failure mode: Button Malfunction Failure symptoms - Not start cooking. - No cooking start - Button cannot be input Unplug the power cord and then again insert All buttons Malfunction Only the Start button malfunction Check whether the button is stuck when you press any button ~ A good working switch makes some sound on press...
- Page 27 Check start button operation by opening and closing the door 2~3 times Start button Malfunction Unplug power cord Unplug power cord Check contact adjustment Primary Switch is located on the top of latch board Check that the contact is pressed after Check latch contacts the door is closed.
- Page 28 Measure the Safety switch resistance betwee its two terminals Abnormal Normal Replace micro Abnormal switch Check whether PCB connector CN1 connected connector CN1 connected Unplug the connector Close the Door connector CN8 connected Check whether PCB Unplug the connector Measure the resistance between both ends Abnormal Normal Replace Abnormal...
- Page 29 Failure modes: Heating (No heating / defrosting) Failure symptoms - Heating / Defrosting not working - No microwaves - Raw/Uncooked food Check start button operation by opening and closing the Safety switch is located at the top of the latch door 2~3 times Check the connection status of the switch connector and Micro Switch is pressed when...
- Page 30 Primary Switch is located on the top of latch board Measure the resistance across the switch ends with a multimeter Abnormal Normal Replace Primary Normal safety Switch Check connections of the magnetron and measure the resistance across MGT B/W Filament & Case B/W Filament Terminals Normal: Infinity Normal: Less than 1 Ohm...
- Page 31 Replace the high Normal voltage fuse Check the connection status of high-voltage capacitors and measure the resistance with a multimeter as shown below Filament & Case Resistance Terminal Resistance Momentarily shows Normal = several ohms and then gradually return to infinity Abnormal= 0 Ohm Normal= Infinity Replace the high...
- Page 32 Failure symptoms Failure modes: No heating (oven) - Raw/uncooked food. -No heat inside the cavity. No Heating That normal operation guide, Explains how to use. Unplug the power cord Measure the resistance across the terminals of upper and lower quartz heater with a multimeter as shown below Abnormal Normal Normal...
- Page 33 Measure the resistance across the terminals Pull the Blue and Red housing connected across of upper quartz heater with a multimeter the relay RY1 & RY5 Abnormal Normal Replace Quartz Normal heater Measure the resistance across the terminals of lower quartz heater with a multimeter Connect the power cord Operate the oven and measure the resistance across the terminals of each relay...
- Page 34 Failure symptoms Failure modes: No heating (grill) - Raw/uncooked food. - No heat inside cavity. No Heating That normal operation guide, Explains how to use. unplug the power cord Check the resistance across the ends of two grill heaters with a multimeter as shown in fig Abnormal Normal Normal...
- Page 35 Pull the Blue and Yellow housing Measure the resistance of the left grill heater connected across the relay RY1 & RY3 with a multimeter Abnormal Normal Replace Normal Left Grill Heater Measure the resistance of the right grill heater with a multimeter connect power cord Abnormal Operating the grill and measure the...
- Page 36 Failure symptoms Failure mode: Glass Tray not Rotating - Glass tray is not rotating Connect the power cord and press Start Cooking Oven lamp and turn table are not working at the same time Adjust table position as shown below Turn table is in correct place and position...
- Page 37 Check the wiring to the TT Motor and measure the resistance with a multimeter Terminal Resistance Terminal Resistance Primary Switch is located on the top of latch board Normal : 10~20 KOhm Measure the resistance across the Abnormal : infinity & 0 Ohm switch ends Terminal &...
- Page 38 Failure mode: type and condition occurs Failure mode Cause Check 1) Check whether controller connector CN9 Thermistor Open error came out In Convection cooking, if temperature does F-01 2) Check whether Thermistor is Open not reached above 100'C in 10 min, then error is displayed 3) Check whether convection heater working Thermistor short error...
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Page 39: Exploded View
#EV# EXPLODED VIEW INTRODUCTION MODEL: OVEN CAVITY PARTS INTERIOR PARTS BASE PLATE PARTS DOOR PARTS LATCH BOARD PARTS CONTROL PANEL PARTS -6-1-... - Page 40 #EV# DOOR PARTS 13581A -6-2-...
- Page 41 #EV# CONTROL PANEL PARTS 268711 268712 23572A 23806C 250203 MAIN 249401 24930M 250204 23550C -6-3-...
- Page 42 #EV# OVEN CAVITY PARTS 55238B 348102 35300A 330522 33112U 35300A 445102 44980A 43500A 445101 33651A 33390G 33550S 33390M 55238A 34370T 35026G 335021 35889A 35026C 36549S 33301R 33390C -6-4-...
- Page 43 #EV# LATCH BOARD PARTS 43500B 466003 14510L 466001 568771 466003 -6-5-...
- Page 44 #EV# INTERIOR PARTS 56892 56411A 535041 55900N 535042 568772 36549C 56930V 56930H 55900C 568774 56322A 55300A 56851F 54974S 56201A 56549F 56912B 56901A 56851D 56851E 56324A 56930G -6-6-...
- Page 45 #EV# BASE PLATE PARTS 56170D 64970A -6-7-...