LG MS-197H Page 1 Service Manual Download | Manualshive

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MICROWAVE OVEN

SERVICE MANUAL

MODEL: MS-197H

CAUTION

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

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Summary of Contents for MS-197H

Page 1: ...MICROWAVE OVEN SERVICE MANUAL MODEL MS 197H CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL ...

Page 2: ...nd sealing surfaces arcing wear and other damage 4 damage to or loosening of hinges and latches 5 evidence of dropping or abuse C Before turning on microwave power for any service test or inspection within the microwave generating compartments check the magnetron wave guide or transmission line and cavity for proper alignment integrity and connections D Any defective or misadjusted components in t...

Page 3: ...TING SEQUENCE 4 2 SCHEMATIC DIAGRAM 4 3 CIRCUIT DESCRIPTION 4 4 SERVICE INFORMATION 5 1 TOOLS AND MEASURING INSTRUMENTS 5 1 MICROWAVE LEAKAGE TEST 5 1 MEASUREMENT OF MICROWAVE POWER OUTPUT 5 3 DISASSEMBLY AND ADJUSTMENT 5 3 INTERLOCK CONTINUITY TEST 5 7 COMPONENT TEST PROCEDURE 5 8 TROUBLE SHOOTING 5 12 EXPLODED VIEW 6 1 REPLACEMENT PARTS LIST 7 1 CONTENTS ...

Page 4: ...ight Control Complement Nameplate Location Accessories DESCRIPTION MS 197H 230 Volts AC 50 Hz 1 000 Watts 4 5 A Single phase 3 wire grounded 700 Watts full microwave power IEC705 2 450 MHz 2M213 09 0 60 min 483 W x 285 H x 355 D mm 312 W x 198 H x 316 D mm 12 5 kg approx 14 kg approx Microwave Power for Variable Cooking Power level Max 500W 350W Defrost 70W Owner s manual cooking guide Glass turnt...

Page 5: ... operation of the microwave oven requires that the magnetron be assembled to the waveguide and cavity Never operate the magnetron unless it is properly installed Be sure that the magnetron gasket is properly installed around the dome of the tube whenever installing the magnetron 2 1 CAUTIONS Unlike other appliances the microwave oven is high voltage and high current equipment Though it is free fro...

Page 6: ...lat surface at least 10 cm 4 inches from the wall 7 Place the microwave oven as far away as possible from TV RADIO COMPUTER etc to prevent interference EARTHING INSTRUCTIONS This microwave oven is designed to be used in a fully earthed condition It is imperative therefore to make sure it is properly earthed before servicing WARNING THIS APPLIANCE MUST BE EARTHED IMPORTANT As the colors of the wire...

Page 7: ...Power Knob Door Open Button Safety Door Lock System Turntable Rotating Ring Timer Knob 2 1 Watt Min 70 Defrost 350 500 max 0 1Kg 0 2 0 3 0 4 0 5 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 0 1 POWER CONTROL KNOB Used in selected the desired power level for cooking 2 TIMER KNOB Used to set the cooking time ...

Page 8: ...king starts At the end of cooking time you will a single ring sound and the lamp is turn off NOTE Each number represents minutes To ensure accurate timing it is advisable to turn the timer knob slightly passed the desired cooking time and then back to the proposed setting Press the door opener to check the cooking condition during oven operation Opening the door during oven operation automatically...

Page 9: ...SCHEMATIC DIAGRAM 4 3 ...

Page 10: ...ate Timer starts rotating 3 2 volts AC is generated from the filament winding of the high voltage transformer This 3 2 volts is applied to the magnetron to heat the magnetron filament through two noise preventing choke coils A high voltage of approximately 2100 volts AC is generated in the secondary of the high voltage transformer which is increased by the action of the diode and charging of the h...

Page 11: ...DOOR PARTS LATCH BOARD PARTS CONTROL PANEL PARTS INTERIOR PARTS BASE PLATE PARTS OVEN CAVITY PARTS 6 1 EXPLODED VIEW INTRODUCTION ...

Page 12: ...6 2 13552A 13213A 13581A 13720D 14970A 14026A 13536A 13352A DOOR PARTS ...

Page 13: ...6 3 24781T 23572A 24510L 250201 24970A 249401 WTP015 26549T CONTROL PANEL PARTS ...

Page 14: ...6 4 33052M 340511 33112U WTT021 34960A 36549S WTP013 33390G 35889A OVEN CAVITY PARTS ...

Page 15: ...6 5 43501A 43500A 466002 WSZ085 WTT028 466001 466003 56912B 55262A 969201 WTT028 LATCH BOARD PARTS ...

Page 16: ...6 6 56201B WSZ002 WSZ002 WTT028 WSZ062 50FZZA WSZ002 50CZZH 56324A 56411A 56201A 56930V 568771 WTT021 30RMZZ 54974S 56549F WTT037 55900A INTERIOR PARTS ...

Page 17: ...6 7 56170D WTT021 WSZ002 65006B 65006B 50CZZH WSZ002 54810C 56851D 56901A 63302A 63303A BASE PLATE PARTS ...

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