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DIVISION 22

BASIC FIELD MANUAL

FOR

MICROWAVE HOOD COMBINATION

MODEL 721.80522500

721.80529500
721.80524500
721.80523500

October, 2005

MODEL 721.80522

721.80529
721.80524
721.80523

Содержание 721.80522500

Страница 1: ...DIVISION 22 BASIC FIELD MANUAL FOR MICROWAVE HOOD COMBINATION MODEL 721 80522500 721 80529500 721 80524500 721 80523500 October 2005 MODEL 721 80522 721 80529 721 80524 721 80523...

Страница 2: ...oper 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 ad...

Страница 3: ...NEL INSTRUCTIONS 4 2 OVERALL 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 FEA...

Страница 4: ...Interlock Switch Interlock Monitor Switch Magnetron 2M246 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 Ove...

Страница 5: ...g 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 co...

Страница 6: ...ROUNDING 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...

Страница 7: ...4 1 OPERATING INSTRUCTIONS CONTROL PANEL 1 2 6 9 11 15 19 23 27 24 12 5 8 10 14 16 17 18 21 20 22 25 28 26 13 7 4 3...

Страница 8: ...sed by itself or it can automatically follow a cooking cycle 14 Auto Defrost Touch this pad followed by Number Pads to thaw frozen meat by weight 15 Number Pads Touch number pads to enter cooking time...

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

Страница 10: ...re Frozen Vegetable Frozen Entree Hold Warm Canned Vegetable VENT On Off 5 Speed LIGHT HIigh Night Off VENT Plate Dinner Soup or Sauce N C N C N C Fresh Vegetable Reheat Cook Auto Defrost Express Defr...

Страница 11: ...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 c...

Страница 12: ...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...

Страница 13: ...vicing 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 per...

Страница 14: ...d 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 micr...

Страница 15: ...R 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 CN2...

Страница 16: ...ert 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...

Страница 17: ...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 b...

Страница 18: ...ecuring the Latch Board 3 Make necessary replacements and check microwave energy leakage according to ADJUSTMENT PROCEDURES on page 7 12 Latch Board Primary Interlock Switch Monitor Interlock Switch S...

Страница 19: ...etron 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 me...

Страница 20: ...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 b...

Страница 21: ...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 th...

Страница 22: ...7 11 K REPLACING THE HUMIDITY SENSOR 1 Remove the sensor by removing two screws securing it to the air duct See Figure 22 2 Mount the new humidity sensor to the air duct Figure 22...

Страница 23: ...d 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 I...

Страница 24: ...o 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 P...

Страница 25: ...hen 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 swi...

Страница 26: ...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 t...

Страница 27: ...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...

Страница 28: ...ance ohm meter scale Rx1000 VENTILATION MOTOR TURNTABLE MOTOR 1 Remove lead wires 2 Measure resistance ohm meter scale Rx1 Normal Approximately 120 to 135 ohms Abnormal Infinite STIRRER MOTOR COMPONEN...

Страница 29: ...6 7 8 9 10 11 12 13 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 F...

Страница 30: ...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 close...

Страница 31: ...ithout 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...

Страница 32: ...sly 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 se...

Страница 33: ...2 FUSE See CHECKOUT PROCEDURES FOR FUSE BLOWING on page 7 19 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...

Страница 34: ...board Contact OK Normal contact Correct seating Check contact of connector S1 Check the contact of relay 2 see page 7 15 Runs Runs Resistance incorrect Check the continuity of H V C see page 7 14 Nor...

Страница 35: ...7 24 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 36: ...ce magnetron thermostat 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 5 NO runs Check t...

Страница 37: ...8 1 EXPLODED VIEW DOOR PARTS I 1005 1000 1002 1006 1011 1007 1009 1004 W109 1003 1008 EV...

Страница 38: ...8 3 CONTROLLER PARTS I 2004 2381 2008 2006 2000 W106 2002 MBM2 EV...

Страница 39: ...8 5 OVEN CAVITY PARTS 3010 W109 3001 3029 3014 6038 6001 6000 3011 3025 W118 3026 3028 W118 3018 3036 3024 W142 W138 For Model For Model 5036 3003 EV...

Страница 40: ...8 6 LATCH BOARD PARTS 4001 W102 4000 4002 4003 4002 4004 EV...

Страница 41: ...8 7 INTERIOR PARTS I W101 5023 3002 3017 3008 5009 5049 W101 5000 5002 5018 W101 W105 3009 W108 W108 3037 5067 W136 5008 5035 W109 W101 EV...

Страница 42: ...8 8 INTERIOR PARTS II 5015 5045 5037 5038 W109 5006 5010 5001 5016 5014 W105 5044 3004 3027 5024 5029 W101 W144 5412 W110 5012 5007 W130 5041 W150 5027 5011 5206 5386 EV...

Страница 43: ...8 9 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...

Страница 44: ...P NO 3828W5S5344 Printed in Korea...

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