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Содержание MV1611BB

Страница 1: ...ERVICE MANUAL MODEL MV1611BB MV1611WW MV1611ST CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL P NO MFL08861102 August 2010 Printed in Korea Website http us lgservice com 삼 흥 정 판 Internal Use Only ...

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: ...tor Switch 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 ...

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 1 2 4 7 10 13 16 3 6 5 8 12 14 17 15 9 11 ...

Страница 8: ...t by weight 9 AUTO REHEAT Touch this pad to reheat microwavable foods without entering a cook time or power 10 Number Pads Touch number pads to enter cooking times cook powers quantities weights or food categories 11 TIME Touch this pad followed by number pads to set a cooking time 12 STOP CLEAR Touch this pad to erase an incorrect command cancel a program during cooking or to clear the Display 13...

Страница 9: ...5 1 OVERALL CIRCUIT DIAGRAM SCHEMATIC DIAGRAM DIODE 5 PTC RV U ...

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: ...sed 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 borosilicate glass ves...

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: ... 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 resistance ohm met...

Страница 26: ...n Figure 2 This has the positive side of the battery connected to the cathode of the diode 3 The diode should be forward biased therefore a voltage reading of approximately 4 7 VDC to 6 4 VDC will be read depending on meter battery strength etc Note If the meter leads were reversed a negative voltage of the same amount would be seen STEP 3 Test the diode for reverse biasing Procedure 1 Using the s...

Страница 27: ...ce ohm meter scale Rx1000 NOISE FILTER Power Level Open Close 1 2 3 4 5 6 7 8 9 10 4 Sec 6 Sec 8 Sec 10 Sec 12 Sec 14 Sec 16 Sec 18 Sec 20 Sec 22 Sec 18 Sec 16 Sec 14 Sec 12 Sec 10 Sec 8 Sec 6 Sec 4 Sec 2 Sec 0 Sec COMPONENTS TEST RESULTS Figure 1 Figure 2 Figure 3 Nmornal L 1 L 2 coil Less than 1 ohm N 1 N 2 coil Less than 1 ohm Abnormal infinite Normal L 1 or L 2 N 1 or N 2 resistor 1 5M ohms Ab...

Страница 28: ...resistance between terminal pins of connector KEY CONNECTOR NOTE When reconnecting the FPC connector make sure that the holes on the FPC connector are properly engaged with hooks on the 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 ENERG...

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 CONTROL PANEL PARTS DOOR PARTS OVEN CAVITY PARTS INTERIOR PARTS LATCH BOARD PARTS EV MODEL ...

Страница 37: ...1005 1000 1002 1004 1006 1007 1008 1003 W102 1009 8 2 DOOR PARTS I EV FOR MODEL ...

Страница 38: ... 8 4 CONTROLLER PARTS I 2004 2002 2000 MBM2 TECHNICAL CARD 2008 2006 W106 W101 EV FOR MODEL ...

Страница 39: ... 8 6 OVEN CAVITY PARTS 3026 3034 3010 W109 3001 3029 3024 3038 W142 W138 3028 5036 6000 W118 5038 3025 3011 W118 6001 W108 EV ...

Страница 40: ... 8 7 LATCH BOARD PARTS 4001 W102 4000 4002 4003 4002 4004 EV ...

Страница 41: ... 8 8 INTERIOR PARTS I W108 W101 5009 W108 5008 5035 W101 5034 5000 5002 5018 W101 W105 3009 3008 3012 3002 W108 3037 EV ...

Страница 42: ... 8 9 INTERIOR PARTS II 5067 5014 5024 3027 5015 5045 5037 5038 W109 5006 5010 5001 5016 W101 5058 5044 3004 5043 5337 W108 5041 W130 EV ...

Страница 43: ... 8 10 INSTALLATION PARTS 6008 W109 6011 6010 VINYL BAG 6009 MFL1 OWNERS MANUAL MEZ1 COOKING GUIDE LABEL MFL3 INSTALLATION MANUAL MBM4 UPPER TEMPLATE MBM5 WALL TEMPLATE EV ...

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