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MICROWAVE OVEN

SERVICE MANUAL

MODEL: LMV1630WW

LMV1630BB
LMV1630ST

CAUTION

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

P/NO : 382885S0009

January, 2006

Printed in Korea

Website: http://us.lgservice.com

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Содержание LMV1630BB

Страница 1: ... OVEN SERVICE MANUAL MODEL LMV1630WW LMV1630BB LMV1630ST CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL P NO 382885S0009 January 2006 Printed in Korea Website http us lgservice com 삼 흥 정 판 ...

Страница 2: ...roper alignment integrity and connections d Any defective or misadjusted components in the interlock monitor door seal and microwave generation and transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the owner e A Microwave leakage check to verify compliance with the Federal performance standard should be performed on ea...

Страница 3: ...ERALL CIRCUIT DIAGRAM 5 1 SCHEMATIC DIAGRAM 5 1 MATRIX CIRCUIT FOR TOUCH KEY BOARD 5 2 GENERAL INFORMATION FOR SERVICE 6 1 GENERAL PRECAUTIONS IN USE 6 1 TRIAL OPERATION 6 1 FEATURES AND SPECIFICATIONS FEATURES 6 1 SERVICE INFORMATION 7 1 PRECAUTIONS AND REPAIR SERVICE TIPS 7 1 MICROWAVE LEAKAGE TEST 7 2 POWER OUTPUT MEASUREMENT 7 3 DISASSEMBLY INSTRUCTIONS 7 4 INTERLOCK SYSTEM 7 11 INTERLOCK CONT...

Страница 4: ...witch Magnetron 2M214 161GP Cook top Lamp 120 V 30 W Cavity Lamp 125 V 30 W or 40 W Timer Digital up to 99 min 99 sec in each cooking stage Tray Tempered Safety Glass Overall Dimensions 2915 16 W x167 16 H x171 8 D Oven Cavity Size 207 8 W x93 16 H x143 16 D Effective Capacity of Oven Cavity 1 6 Cu ft Accessories Owner s Manual Cooking Guide Installation Manual Exhaust Adapter Exhaust Damper Mount...

Страница 5: ...ng operation BEFORE TOUCHING any parts of the oven always remove the power plug from the outlet Remove your watches whenever working close to or replacing the Magnetron DO NOT touch any parts of the control panel circuit A resulting static electric discharge may damage this P C B NEVER operate the oven with no load NEVER injure the door seal and front plate of the oven cavity NEVER put iron tools ...

Страница 6: ...io etc to prevent interference GROUNDING INSTRUCTIONS For personal safety this appliance must be fully grounded at all times In the event of an electrical short circuit grounding reduces the risk of electrical shock The plug must be plugged into an outlet that is properly installed and grounded CAUTION This unit is equipped with a 3 prong plug for your safety If the wall outlet is a grounded 3 hol...

Страница 7: ...4 1 OPERATING INSTRUCTIONS CONTROL PANEL ...

Страница 8: ...ER LEVEL Touch this pad to select a cooking power level 12 LIGHT HI LOW OFF Touch this pad to turn the Vent on or off 13 HOT WATER Touch this pad when heating water in your microwave oven 14 POPCORN Touch this pad when popping popcorn in your microwave oven 15 MELT Touch this pad to melt butter or margarine chocolate cheese marsh mallow 16 SOFTEN Touch this pad to soften butter ice cream cream che...

Страница 9: ...5 1 OVERALL CIRCUIT DIAGRAM SCHEMATIC DIAGRAM ...

Страница 10: ...5 2 MATRIX CIRCUIT FOR TOUCH KEY BOARD KEY MATRIX ...

Страница 11: ...l show the time counting down by seconds D After about 5 minutes make sure the primary interlock switch the secondary interlock switch and the interlock monitor switch operate properly by opening and closing the door several times Touch the START key each time the door is closed E Continue operating the unit Two short and a long beep sound signal is heard when the time is up The unit will shut off...

Страница 12: ...w the limit of 5 mW cm2 All service adjustments should be made for minimum microwave energy leakage readings 3 Do not operate the unit until it is completely repaired if any of the following conditions exist The unit must not be operated a The door does not close firmly b The hinge is broken c The door seal is damaged d The door is bent or warped or there is any other visible damage on the unit th...

Страница 13: ...rvicing The power density of the microwave radiation leakage emitted by the microwave oven should not exceed 1mW cm2 sq And always start measuring of an unknown field to assure safety for operating personnel from radiation leakage NOTE The standard is 5mW cm2 sq while in the customer s home 1mW cm2 sq stated here is manufacturer s own voluntary standard for units in customer s home EQUIPMENT TESTE...

Страница 14: ...al have been used 3 At least once a year have the electromagnetic energy leakage monitor checked for calibration by its manufacturer POWER OUTPUT MEASUREMENT 1 Microwave power output measurement is made with the microwave oven supplied at its rated voltage and operated at its maximum microwave power setting with a load of 1000 5 g of potable water 2 The water is contained in a cylindrical borosili...

Страница 15: ... SWITCHES AND HIGH VOLTAGE CIRCUIT A REMOVING POWER AND CONTROL CIRCUIT BOARD Figures 1 2 and 3 1 Remove a screw securing the control panel assembly to the oven cavity 2 Remove the control panel with pushing it upward 3 Remove the connectors CN1 and wire leads RY7 from the circuit board 4 Remove 5 screws securing the circuit board 2 5 Remove the FPC connector from the terminal socket following HOW...

Страница 16: ...CONNECTOR Follow the steps below as illustrated in Figures 6 and 7 to insert the F P C connector 1 Insert the F P C connector into the terminal socket securely with the fingers 2 Hold the plastic fastener with thumb and forefinger of the other hand and push it slowly into the terminal socket Figure 6 NOTE When reconnecting the F P C connector make sure that the holes on the F P C connector are pro...

Страница 17: ...r duct 3 Remove the mounting plate by turning the screws 1 or 2 screws securing it to the out case 4 Remove two screws on the left central edge and one screw on the right central edge of Base plate Remove the Mount All from the out case by removing one screw securing it to the out case 5 Remove six screws of the rear cavity 6 Remove the outcase Figure 8 ...

Страница 18: ... switches 2 Remove two screws securing the Latch Board 3 Make necessary replacements and check microwave energy leakage according to ADJUSTMENT PROCEDURES on page 7 12 Figure 9 Figure 10 WIRE COLOR SYMBOL COLOR WH WHITE BK BLACK BR BROWN RD RED YL YELLOW PK PINK BL BLUE GY GREY GN GREEN N P Not Provided ...

Страница 19: ...cing the magnetron be sure to install the magnetron gasket in the correct position and be sure that the gasket is in good condition After replacing the magnetron check for microwave energy leakage with a survey meter Check microwave energy leakage must be below the limit of 5 mW cm2 All service adjustments should be made for minimum microwave energy leakage readings E REMOVING STIRRER FAN Figures ...

Страница 20: ...ll screw driver etc 2 Remove two screws securing it to the door handle CAUTION Be careful not to damage door seal plate with the screwdriver H ASSEMBLING DOOR 1 When mounting the door assembly to the oven assembly be sure to adjust the door assembly parallel to the chassis Also adjust so the door has no play between the inner door surface and oven frame assemblyIf the door assembly is not mounted ...

Страница 21: ...a hand Figure 19 3 Remove the base plate by removing 8 screws securing it to the oven cavity Figure 20 4 Disconnect the leadwire from the turntable motor terminals 5 Remove the 1 screws securing the turntable motorto the oven cavity ASS Y Figure 21 NOTES Remove the leadwire from the turntable motor VERY CAREFULLY Be sure to grasp the connector not the wires when removing Figure 18 b Figure 19 Figu...

Страница 22: ... microwave oven on its side so that you can see the latch board and the switches as shown in Figure 23 a 2 Close the door tightly and check gaps A and B to be sure they are no more than 1 64 0 5 mm See Figure 23 b for close up view of gaps A and B door latches If all gaps are less than 1 64 0 5 mm adjustment of the latch board may not be necessary Go to Steps 5 and 6 to check the sequence of the s...

Страница 23: ...ro to the body of the switches in the following sequence Interlock Monitor Switch Primary Interlock Switch Secondary Interlock Switch NOTE The Interlock Monitor Switch is an added safety check on the Primary and Secondary Interlock Switches If the Primary and Secondary Interlock Switches allow the oven to operate with the door open the Monitor Switch will blow the fuse 7 When you achieve the prope...

Страница 24: ...When the secondary switch operation is abnormal make the necessary adjustment or replace the switch only with the same type of switch C MONITOR SWITCH TEST Disconnect the wire lead from the monitor switch Connect the ohmmeter leads to the common COM and normally closed NC terminals of the switch The meter should indicate closed circuit in the door open condition When the door is closed meter shoul...

Страница 25: ... 1 Remove wire leads 2 Measure resistance ohm meter scale Rx1 Primary winding Secondary winding Filament winding 3 Measure resistance ohm meter scale Rx1000 Primary winding to ground Filament winding to ground 1 Remove wire leads Install the magnetron seal in the correct position Check that the seal is in good condition 2 Measure resistance ohm meter scale Rx1 Filament terminal 3 Measure resistanc...

Страница 26: ...cale Rx1000 CAPACITOR DIODE Some inexpensive ohm meters may indicate infinite resistance in both directions 1 Measure continuity ohm meter scale Rx1 2 Remove the lead wires and operate oven at power level 1 through power level 10 RELAY 2 1 Remove wire leads 2 Measure resistance ohm meter scale Rx1 Normal Approximately Terminal 85 to 105 ohms Terminal 15 to 25 ohms Abnormal Infinite or several FAN ...

Страница 27: ...nfinite or several 1 Remove lead wires 2 Measure resistance ohm meter scale Rx1 High speed Blue and Black wire Low speed Blue and White wire Slow speed Blue and Grey wire 1 Remove wire leads 2 Measure resistance ohm meter scale Rx1000 VENTILATION MOTOR TURNTABLE MOTOR 1 Remove lead wires 2 Measure resistance ohm meter scale Rx1000 Normal Approximately 120 to 135 ohms Abnormal Infinite STIRRER MOTO...

Страница 28: ...plastic fastener MATRIX CIRCUIT FOR TOUCH KEY BOARD CONNECTOR KEY CON TOUCH KEY BOARD Resistance value When touched Less than 400 ohms When not touched More than 1 mega ohm FPC CONNECTOR Top NOTES A MICROWAVE ENERGY TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION WHEN REMOVING THE WIRE LEADS FROM THE PARTS BE SURE TO GRASP...

Страница 29: ... ADJUSTMENT PROCEDURES on page 7 12 when the primary interlock secondary interlock switches and or the interlock monitor switches are adjusted or replaced Fuse blows immediately after the door is closed Fuse blows immediately after the door is opened Fuse blows when the door is closed and START key is touched Improper operation of the primary interlock secondary interlock switches and or the inter...

Страница 30: ...without touching START key when the door is closed GOOD Remove the mate connector of I O CON from the circuit board Does the unit still operate Defective Wire Assembly Replace the circuit board Replace Wire Assembly NO NO YES YES GOOD Measure the voltage at pin NO 1 4 of CN1 Voltage reading 120 V AC Replace the circuit board Defective FAN motor YES NO NO YES Replace FAN motor PROBLEM B Oven lamp t...

Страница 31: ...usly operates 3 Proper temperature measurement is not obtained 4 The buzzer does not sound or continues to sound 5 Some segments of one or more digits do not light up or they continue to light up or segments light when they should not 6 Wrong figures appear 7 The figures of all digits 8 Some of the indicators do no flicker light up 9 The clock does not keep time properly NOTE A MICROWAVE ENERGY LE...

Страница 32: ...hru E BUZZER Problems F PROBLEM A PLEASE SET TIME OF DAY does not appear in display window when power supply cord is plugged into wall outlet PROBLEM B Display does not show correct numbers and or correct indications when programmed Check 1 POWER SUPPLY 2 FUSE See CHECKOUT PROCEDURES FOR FUSE BLOWING on page 7 19 3 OVEN CAVITY THERMOSTAT 1 1 ...

Страница 33: ...7 22 PROBLEM E Unit does not heat up even if display counts down when START key is touched for HIGH POWER cooking Check 1 PRIMARY AND SECONDARY INTERLOCK SWITCHES 2 THERMOSTAT 1 2 2 ...

Страница 34: ...7 23 PROBLEM F No buzzing when touching the key between stages or at end of cooking 1 ...

Страница 35: ...7 24 PROBLEM Ventilation fan does not operate when ON OFF key is touched 1 Check 1 POWER SUPPLY 2 FUSE ...

Страница 36: ...8 1 EXPLODED VIEW INTRODUCTION Model LMV1630WW LMV1630BB LMV1630ST CONTROL PANEL PARTS DOOR PARTS OVEN CAVITY PARTS INTERIOR PARTS LATCH BOARD PARTS EV ...

Страница 37: ...581A 13213A 13536A 13552A 14026A 14970A 14890A 13720D WMT024 13581A 136503 13213A 13536A 13552A 14026A 14970A 14890A 13551A 136501 136502 136503 136501 136502 WMT024 EV For Model LMV1630WW LMV1630BB For Model LMV1630ST ...

Страница 38: ...RTS 24781M WSZ002 WSZ085 23572A 23506A 23551A TECHNICAL CARD 24810P 268711 WTP018 24781M TECHNICAL CARD 24810P 268711 WTP018 WTP015 20CZZH WTP015 20CZZH WSZ002 WSZ085 EV For Model LMV1630WW LMV1630BB For Model LMV1630ST ...

Страница 39: ...EN CAVITY PARTS 33052A 34960A WTT028 33112U 34810Q 56804A 63303A 63302A 34890C 34810T WTT010 WTT020 35230A 36912C WTT010 35026G 34930R 33530A WTT029 33550L For Model LMV1630BB LMV1630ST For Model LMV1630WW EV ...

Страница 40: ...8 5 LATCH BOARD PARTS 43501A WSZ085 43500A 466001 466003 466001 44510A EV ...

Страница 41: ...8 6 INTERIOR PARTS I WTT021 WSZ002 56324A WTT021 56170D 53300B WSZ002 53300A 50CZZH 54810C 56851D WSZ002 WTP013 36549S 35889A 34370T 33390G WTT021 33740A EV ...

Страница 42: ...8 7 INTERIOR PARTS II 36549V 56912B 53550L 55231C 54810A 56804A WTT028 55262A 56411A 50FZZA 56930V 568771 WSZ002 55892A 53550F 340511 54930F 53740A WTT021 56201A WTP015 EV ...

Страница 43: ...8 8 INSTALLATION PARTS 63300M WTT028 65862D 65862B VINYL BAG 63861A 01 OWNERS MANUAL 02 SERVICE MANUAL 05 COOKING GUIDE LABEL 04 INSTALLATION MANUAL 06 1 UPPER TEMPLATE 06 2 WALL TEMPLATE EV ...

Страница 44: ...PANEL R 268711 6871W1A497A PWB PCB ASSEMBLY SUB R 33052A 3052W1A002A CANOPY RESIN R 33112U 3112W0U052M OUT CASE U BENDING R 33390G 1B71961H TRAY GLASS R 33530A 3530W0A055A GRILLE VENT R 33550L 3550W3A095C COVER LAMP R 33740A 3740W1A005E PROTECTOR MECH R 340511 4051W3A001A RIVET ASSEMBLY R 34370T 4370W1A011B SHAFT TURN TABLE R 34810Q 4810W1A149A BRACKET MOUNT R 34810T 4810W1A150C BRACKET LAMP R 348...

Страница 45: ...A 2B72130F FILTER ASSEMBLY CIRC R 6201W1A014B 56201A 2B72130F FILTER ASSEMBLY CIRC R 6201W1A014E 56324A 2B71165R MAGNETRON R 2B71165P 56411A 6411W1A019M POWER CORD ASSEMBLY R 56804A 6620G00007A SOCKET CIRC LAMP R 56804A 6620G00007A SOCKET CIRC LAMP R 56851D 6021W3B001S CABLE ASSEMBLY R 6021W3B001G 56851D 6021W3B001S CABLE ASSEMBLY R 6851W1A002B 568771 6877W1A597N HARNESS R 56912B 6912W1Z004A LAMP ...

Страница 46: ...KET CONTROL PANEL R 268711 6871W1A497A PWB PCB ASSEMBLY SUB R 33052A 3052W1A002A CANOPY RESIN R 33112U 3112W0U052N OUT CASE U BENDING R 33390G 1B71961H TRAY GLASS R 33530A 3530W0A055B GRILLE VENT R 33550L 3550W3A095C COVER LAMP R 33740A 3740W1A005E PROTECTOR MECH R 340511 4051W3A001A RIVET ASSEMBLY R 34370T 4370W1A011B SHAFT TURN TABLE R 34810Q 4810W1A149A BRACKET MOUNT R 34810T 4810W1A150D BRACKE...

Страница 47: ...72130F FILTER ASSEMBLY CIRC R 6201W1A014B 56201A 2B72130F FILTER ASSEMBLY CIRC R 6201W1A014E 56324A 2B71165R MAGNETRON R 2B71165P 56411A 6411W1A019M POWER CORD ASSEMBLY R 56804A 6620G00007A SOCKET CIRC LAMP R 56851D 6021W3B001S CABLE ASSEMBLY R 6021W3B001G 56851D 6021W3B001S CABLE ASSEMBLY R 6851W1A002B 568771 6877W1A597N HARNESS R 56912B 6912W1Z004A LAMP DRAWING R 56930V 6930W1A003E THERMOSTAT R ...

Страница 48: ... PWB PCB ASSEMBLY SUB R 33052A 3052W1A002A CANOPY RESIN R 33112U 3112W0U052N OUT CASE U BENDING R 33390G 1B71961H TRAY GLASS R 33531A 353181A001A GRILLE ASSEMBLY R 33550L 3550W3A095C COVER LAMP R 33740A 3740W1A005E PROTECTOR MECH R 340511 4051W3A001A RIVET ASSEMBLY R 34370T 4370W1A011B SHAFT TURN TABLE R 34810Q 4810W1A149A BRACKET MOUNT R 34810T 4810W1A150D BRACKET LAMP R 34890C 4890W1A045A GLASS ...

Страница 49: ...56201A 2B72130F FILTER ASSEMBLY CIRC R 6201W1A014E 56324A 2B71165R MAGNETRON R 2B71165P 56411A 6411W1A019M POWER CORD ASSEMBLY R 56804A 6620G00007A SOCKET CIRC LAMP R 56804A 6620G00007A SOCKET CIRC LAMP R 56851D 6021W3B001S CABLE ASSEMBLY R 6021W3B001G 56851D 6021W3B001S CABLE ASSEMBLY R 6851W1A002B 568771 6877W1A597N HARNESS R 56912B 6912W1Z004A LAMP DRAWING R 56930V 6930W1A003E THERMOSTAT R 6930...

Страница 50: ......

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