Sears 721. 63762 Field Manual Download Page 1

Page: 1 / 46

삼

흥

정

판

삼

흥

정

판

DIVISION 22

BASIC FIELD MANUAL

FOR

MICROWAVE HOOD COMBINATION

MODEL 721. 63762

721. 63763
721. 63764
721. 63769

FEBRUARY, 2003

MODEL 721. 63762

721. 63763
721. 63764
721. 63769

Summary of Contents for 721. 63762

Page 1: ...DIVISION 22 BASIC FIELD MANUAL FOR MICROWAVE HOOD COMBINATION MODEL 721 63762 721 63763 721 63764 721 63769 FEBRUARY 2003 MODEL 721 63762 721 63763 721 63764 721 63769...

Page 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...

Page 3: ...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 S...

Page 4: ...r P1 1019 120 V Magnetron 2M261 Cook top Lamp 120 V 20 W Halogen Cavity Lamp 125 V 20 W Halogen Timer Digital up to 99 min 99 sec in each cooking stage Tray Tempered Safety Glass Overall Dimensions 29...

Page 5: ...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 Unlike other appliances the...

Page 6: ...unded 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 BEFORE YOU...

Page 7: ...wave oven control panel lets you select the desired cooking function quickly and easily All you have to do is touch the necessary Command Button The following is a list of all the Command and Number B...

Page 8: ...Warm can be used by itself or it can automatically follow a cooking cycle 13 Add Minute Touch this button to cook for 1 minute at 100 cook power or to add extra minutes at the set cook power to your c...

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

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

Page 11: ...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 To...

Page 12: ...ll 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...

Page 13: ...ity of the microwave radiation leakage emitted by the microwave oven should not exceed 1mW cm sq And always start measuring of an unknown field to assure safety for operating personnel from radiation...

Page 14: ...e 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 supp...

Page 15: ...NG 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 C...

Page 16: ...ws on the left central edge and three screws 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...

Page 17: ...11 Latch Board Secondary Interlock Switch Interlock Monitor Switch Interlock Switch Primary Latch Board WH from Inverter YL from Turntable Motor PK from Cooktop lamp BL from Oven Thermostat Secondary...

Page 18: ...vice adjustments should be made for minimum microwave energy leakage readings E REMOVING THE INVERTER MODULE Figures 13 Through 15 1 Remove the vent grille by loosening two screws Figure 11 2 Remove t...

Page 19: ...DISASSEMBLING DOOR Figure 19 1 Remove the dielectric choke by using knife blade or small screw driver etc 2 Remove two screws securing it to the door handle CAUTION Be careful not to damage door seal...

Page 20: ...es may leak from the clearance between the door and the oven J REMOVING THE VENTILATION MOTOR 1 Remove the mounting plate by loosening mounting plate screws 1 or 2 screws securing it to the back plate...

Page 21: ...rews securing it to the oven cavity Figure 23 4 Disconnect the leadwire from the turntable motor terminals 5 Remove the 1 screws securing the turntable motor to the oven cavity ASS Y Figure 24 NOTES R...

Page 22: ...ustment 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 In...

Page 23: ...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...

Page 24: ...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...

Page 25: ...emoved MAGNETRON Lead wires removed Note Do not try to repair the inverter board nor try to make any adjustments to the board Check wiring to the inverter 1 Unplug the oven s main power supply 2 Visua...

Page 26: ...dry 4 The oven will not generate microwave energy for the first 28 seconds of the sensor cooking cycle 1 Disconnect sensor connector from micom computer board 2 Measure resistance terminal to termina...

Page 27: ...150 ohms Abnormal Infinite or several ohms A B 76 ohms B C 22 ohms A C 96 ohms Normal Approx 2 4K ohms Abnormal Infinite or several ohms A RD B BK C WH Relay 2 Normal Approx 125 to 135 ohms Abnormal...

Page 28: ...s touched Improper operation of the primary interlock secondary interlock switches and or the interlock monitor switch Malfunction of the high voltage transformer the high voltage capacitor including...

Page 29: ...place the circuit board Defective FAN motor Defective Wire Assembly Replace FAN motor NO NO YES YES NO NO YES YES GOOD PROBLEM A Oven lamp turns on without touching START key when the door is closed R...

Page 30: ...ut current is less than 0 5 A there is no input to the inverter 2 The start function fails to operate but the high voltage Systems the interlock switches the door sensing and the relay check good 3 Th...

Page 31: ...ontrol panel Always touch yourself to ground while working on this panel to discharge any static charge built up in your body Micom model only CONDITION Microwave oven does not work Inserting many plu...

Page 32: ...after setting cooking cycle 11 Display time of day does not reappear when cooking is finished TROUBLE 1 The following visual conditions indicate a probable defective control circuit CONDITION CHECK RE...

Page 33: ...fuse primary monitor switches and P C B Assembly Check continuity of monitor switch with door closed Check continuity of primary switch with door opened Disconnect one side of the lead wires connected...

Page 34: ...en CN1 connector and control PCB assembly TROUBLE 3 Display shows all figures set but oven does not start cooking while desired program times are set and START pad is touched 3 The display shows F 9 N...

Page 35: ...ng voltage Normal Defective Magnetron Replace Magnetron Decrease in power source voltage with load Suggest customer contact local electric power utility co or qualified electrician Check the power sou...

Page 36: ...8 1 EXPLODED VIEW DOOR PARTS 1000 1004 1005 1008 1003 W109 W109 1011 1009 1015 1381 1007 1006 W171 1002 EV MODEL...

Page 37: ...8 2 CONTROLLER PARTS I 1001 W171 W171 2016 2009 2007 2017 EV...

Page 38: ...2004 2008 2002 2006 W106 2381 8 3 CONTROLLER PARTS II EV...

Page 39: ...9 W121 W107 W138 W142 W138 W142 3024 3040 3042 3029 3003 3036 3018 3041 3005 W150 6000 3032 W149 3026 5036 W121 W142 3001 3039 W142 3033 For Model For Model For Model For Model W107 W121 W108 5382 OVE...

Page 40: ...8 5 LATCH BOARD PARTS 4000 W102 4001 4002 4003 4002 4004 EV...

Page 41: ...3002 5026 5049 5025 5003 5057 5012 5009 5052 5000 3007 5044 3009 W105 3004 5035 3008 3017 W109 W109 W109 W109 W101 W109 W109 W109 W109 W130 W146 W101 5066 5048 5024 3054 8 6 INTERIOR PARTS I EV...

Page 42: ...TS II 5011 3027 5001 5016 5029 5006 5014 5010 5064 5065 W144 W150 W150 5027 W109 5019 5041 W140 W140 W178 5045 5382 5800 W202 5056 5037 Discord original for parts supplied Change pieces simultaneously...

Page 43: ...8 8 INSTALLATION PARTS 6008 6011 6010 VINYL BAG 6009 MBM3 TEMPLATE MEZ1 COOKING GUIDE LABEL MFL1 OWNERS MANUAL TECHNICAL CARD MBM2 MFL3 INSTALLATION MANUAL EV...

Page 44: ...8 21 SCHEMATIC DIAGRAM OF P C B...

Page 45: ...8 22 PRINTED CIRCUIT BOARD...

Page 46: ...P NO 3828W5S2945 Printed in Korea...

Search results

Summary of Contents for 721. 63762

Reviews:

Related manuals for 721. 63762

Brands by name

Popular brands

Sears 721. 63762, Field Manual

Search results

Summary of Contents for 721. 63762

Reviews:

Related manuals for 721. 63762

Brands by name

Popular brands