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4-2

1. DISPLAY:

The Display includes a clock and

indicators to tell you time of day, cooking time
settings and cooking functions selected.

2. POPCORN:

Touch this pad when popping popcorn

in your microwave oven.

3. POTATO:

Touch this pad to cook potatoes from

1 to 4.

4. BEVERAGE:

Touch this pad to reheat one cup or

two cups a beverage.

5. PIZZA:

Touch this pad to reheat 1 to 3 slices.

6. REHEAT:

Touch this pad to reheat dinner plate

soup/sauce, casserole, roll/muffin.

7. FROZEN ENTREE:

Touch this pad to cook frozen

entrees by choosing a preset weight.

8. AUTO COOK:

Touch this pad to cook vegetables,

rice, or casseroles.

9. TIME DEFROST:

Touch this pad to set a defrost

time.

10. AUTO DEFROST:

Meat, poultry, fish. Touch this

pad to select food type and defrost food by weight.

11. NUMBER:

Touch number pads to enter cooking

time, power level, quantities or weights.

12. KITCHEN TIMER:

Touch this pad to set the kitchen

timer.

13. CLOCK:

Touch this pad to enter the time of day.

14. EZ ON:

Touch this pad to set and start quickly at

100% power level.

15. TIME COOK:

Touch this pad to set a cooking time.

16. POWER LEVEL:

Touch this pad to select a

cooking power level.

17. STOP/CLEAR:

Touch this pad to stop the oven or

clear all entries.

18. START:

Touch this pad to start a function or enter

all entries. If you open the door after oven begins
to cook, touch START again.

19. FAN HI/LO/OFF:

Touch this pad to turn the fan on or

off.

20. LIGHT HI/LO/OFF:

Touch this pad to turn the

cooktop lamp on or off.

CONTROL PANEL INSTRUCTIONS

NOTE:

Styling and features vary by model.

Содержание MV1610ST

Страница 1: ... website http us lgservice com MICROWAVE OVEN SERVICE MANUAL MODEL MV1610ST MV1610WW CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL P NO 3828W5S5355 November 2005 Printed in Korea ...

Страница 2: ...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 each ove...

Страница 3: ...ALL 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 12 INTERLOCK CONTIN...

Страница 4: ...use 20A Primary Interlock Switch Secondary Interlock Switch Interlock Monitor Magnetron 2M246 050GF High Voltage Capacitor Capacitor 1 0µF 2 1 KV AC High Voltage Diode Diode 350mA 9 0 KV Cook top Lamp 120 V 30 W Cavity Lamp 120 V 25 W Timer Digital up to 99 mim 99 sec in each cooking stage Tray Tempered Safety Glass Overall Dimensions 2915 16 W x167 16 H x153 8 D Oven Cavity Size 219 16 W x83 4 D ...

Страница 5: ...per 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 CAUTIONS Unlike other appliances the microwave oven is high voltage and high current equipment Though it is free from...

Страница 6: ... 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 INSTALLATIONS BEFORE YOU BEGIN READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY CAUTION This unit is equipped with a 3 prong plug for your safety If the wall outlet is a grounded 3 hole type the unit will be grounded aut...

Страница 7: ...4 1 OPERATING INSTRUCTIONS CONTROL PANEL NOTE Styling and features vary by model ...

Страница 8: ... AUTO DEFROST Meat poultry fish Touch this pad to select food type and defrost food by weight 11 NUMBER Touch number pads to enter cooking time power level quantities or weights 12 KITCHEN TIMER Touch this pad to set the kitchen timer 13 CLOCK Touch this pad to enter the time of day 14 EZ ON Touch this pad to set and start quickly at 100 power level 15 TIME COOK Touch this pad to set a cooking tim...

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

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

Страница 11: ...y light comes on The unit will begin cooking and the display window will 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 Four long beep soun...

Страница 12: ...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 that may cause microwa...

Страница 13: ... for microwave leakage after every servicing The power density of the microwave radiation leakage emitted by the microwave oven should not exceed 4 mW cm2 Always start measuring of an unknown field to assure safety for operating personnel from radiation leakage EQUIPMENT TESTER VOLTS DC AC Ohmmeter Microwave survey meter Holaday HI 1500 HI 1501 Narda 8100 8200 600 cc non conductive material beaker...

Страница 14: ...nual have been used 3 At least once a year have the electromagnetic energy leakage monitor checked for calibration by its manufacturer 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 vessel havin...

Страница 15: ...WER 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 three connectors CN1 CN2 CN3 and wire leads Relay7 from the circuit board 4 Remove 3 screws securing the circuit board 5 Remove the FPC connector from the terminal socket following HOW TO REMOVE THE FPC CONNECTOR on t...

Страница 16: ... 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 properly engaged with the hooks on the plastic fastener 3 Lock the level of the plastic fastener into the hook o...

Страница 17: ...move the base plate by removing six screws securing it to the out case Remove the Mount All from the out case by removing two screws securing it to the out case and one screw securing it to the ventilation motor ASS Y and cavity 6 Remove the power cord cover from outcase by removing a screw 7 Remove the power cord to the inner of the out case with turning power cord and remove the out case with pu...

Страница 18: ...rd Secondary Interlock Switch Interlock Monitor Switch Primary Interlock Switch WIRE COLOR SYMBOL COLOR WH BK BR RD BL PK GY N P WHITE BLACK BROWN RED YL YELLOW BLUE PINK GREY GN GREEN Not Provided Latch Board WH from H V Transformer WH from Monitor S W WH from Oven Thermostat PK from Cooktop lamp Secondary Interlock Switch Monitor Interlock Switch Primary Interlock Switch YL from P C B GN from P ...

Страница 19: ...t may be damaged When replacing 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 vert...

Страница 20: ...be sure to check that the primary interlock switch the secondary interlock switch and the interlock monitor switch operate normally After replacing the door check for microwave energy leakage with a survey meter Microwave energy leakage must be below the limit of 5mW cm2 With a 275 ml water load G DISASSEMBLING DOOR Figure 15 b 1 Remove the dielectric choke by using knife blade or small screw driv...

Страница 21: ... VENTILATION FAN ASS Y 1 Remove the mounting plate by removing two screws securing it to the back plate See Figure 16 2 Remove the two screws securing the MOUNT ALL and one screw securing the ventilation fan ASS Y See Figure 17 3 Carefully pull the ventilation motor ASS Y out of the microwave oven See Figure 18 J REPLACING THE HUMIDITY SENSOR For sensor model only 1 Remove the sensor by removing t...

Страница 22: ...crews securing it to the oven cavity Figure 20 4 Disconnect the leadwire from the turntable motor terminals 5 Remove the 1 or 2 screws securing the turntable motor to 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 Wire Leads Turntable Motor Figure 19 Figure 20 Figure 21 ...

Страница 23: ... of the latch board may not be necessary Go to Steps 5 and 6 to check the sequence of the switches NOTE To correct sequence of the Primary Interlock Switch Secondary Interlock Switch and the Interlock Monitor Switch is very important If any gap is larger than 1 64 0 5 mm you will need to adjust the latch board Go to step 3 and follow all steps in order ADJUST THE LATCH AND SWITCH CLOSING 3 Loosen ...

Страница 24: ...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 25: ...ary 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 should indicate an o...

Страница 26: ...re leads are removed HIGH VOLTAGE TRANSFORMER Wire leads are removed 1 Measure the resistance Across the filament terminals of the magnetron with an ohm meter on Rx1 scale 2 Measure the resistance Between each filament terminal of the magnetron and the chassis ground with an ohm meter on high test scale 1 Measure the resistance With an ohm meter on Rx1 scale a Primary winding b Filament winding c ...

Страница 27: ...omentarily indicates several ohms and then gradually returns to infinite ohms Abnormal reading Indicates continuity or infinite ohms from the beginning Normal readings Infinite Abnormal reading Indicates continuity Normal readings continuity Abnormal reading Infinite Normal readings Infinite Abnormal reading continuity Ohm meter Ohm meter Ohm meter Ohm meter Figure 24 a Figure 24 b Figure 25 a Fig...

Страница 28: ...he 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 For detail matrix circuit of each model refer to page 5 2 FPC CONNECTOR Top Resistance value When touched Less than 400 ohms When not touched More than 1 mega ohm Figure 26 Figure 27 ...

Страница 29: ...MPERE FUSE NOTES If the fuse is blown by an improper switch operation replace all switches and the fuse at the same time After replacing the defective switches with new ones make sure that they are correctly connected Check for microwave energy leakage according to INTERLOCK ADJUSTMENT PROCEDURES on page 7 12 when the primary interlock secondary interlock switches and or the interlock monitor swit...

Страница 30: ...ll operate Replace the circuit board Replace RELAY1 12 NO NO YES YES GOOD Defective RELAY1 12 PROBLEM B Vent fan motor and oven lamp turn on When the door is closed and START key is touched Measure the voltage at pin NO 47 50 of U01 or 48 49 51 of U01 Voltage reading 0 Vdc Replace the circuit board Defective RELAY1 12 or poor connection of RELAY1 12 Replace RELAY1 12 or correct the connection YES ...

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: ... 2 FUSE See CHECKOUT PROCEDURES FOR FUSE BLOWING on page 7 18 3 OVEN CAVITY THERMOSTAT 1 1 Measure voltage between pin 1 and pin 3 of connector CN1 0 120 120V Replace circuit board Normal circuit board Normal resistance Voltage incorrect Correct connections 0 120 WH RD Runs Runs Measure resistance of touch key board after removing connector S1 See page 7 4 and 7 17 Normal resistance Resistance inc...

Страница 33: ...t board Contact OK Normal contact Correct seating Check contact of connector S1 Check the contact of relay 7 see page 7 18 Runs Runs Resistance incorrect Check the continuity of H V C see page 7 16 Normal H V T Resistance incorrect Normal H V C Abnormal Replace H V D Normal Magnetron Replace Magnetron Normal Normal H V D Check the continuity of H V D see page 7 16 Replace H V C Normal resistance R...

Страница 34: ...7 23 PROBLEM F No buzzing when touching the key between stages or at end of cooking 1 Normal circuit board Check normal operation circuit board Replace circuit board Runs ...

Страница 35: ...lace magnetron thermal fuse and oven thermostat Poor contact Replace circuit board Normal circuit board Contact OK Normal contact Correct seating Check contact of connector S1 see page 7 4 NO runs Check the contact of magnetron thermal fuse and oven thermostat Runs Runs Runs Runs Check 1 POWER SUPPLY 2 FUSE ...

Страница 36: ...8 1 DOOR PARTS EXPLODED VIEW 13581A 13551A 13213A 13536A 13552A WTT028 14026A 14970A 13581A 13720D 13213A 13536A 13552A WTT028 14026A 14970A 13650A 14890A 13650A EV FOR MODEL MV1610WW FOR MODEL MV1610ST ...

Страница 37: ...8 2 CONTROLLER PARTS 268711 24810P 23572A 23506A 24781M WTP018 07 268711 24810P 23551A 24781M WTP018 07 EV FOR MODEL MV1610WW FOR MODEL MV1610ST ...

Страница 38: ...8 3 OVEN CAVITY PARTS WTT027 WTT028 33112U 34960A 34810Q 56804A 63303A 63302A 34890C 34810T WTT010 35230A 36912C WTT010 33052A WTT027 33530A 33550L EV ...

Страница 39: ...8 4 LATCH BOARD PARTS WSZ085 43500A 466001 466003 466001 44510A EV ...

Страница 40: ...8 5 INTERIOR PARTS I WSZ002 56324A WTT021 56170D 53300B WSZ002 53300A 50CZZH 54810C 56851D WSZ002 WTP013 36549S 35889A 34370T 33390G WTP013 33740A 55238A EV ...

Страница 41: ...8 6 INTERIOR PARTS II 36549V 56912B 53550L 55231C 53740A 56804A WTT028 55262A 56411A 56930V 54810A 568771 WSZ002 50FZZA 56201A EV ...

Страница 42: ...8 7 INSTALLATION PARTS 02 SERVICE MANUAL 01 OWNERS MANUAL 05 COOKING GUIDE LABEL VINYL BAG 63861A 65862B 65862D 63300M 06 1 06 2 WALL TEMPLATE UPPER TEMPLATE EV ...

Страница 43: ......

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