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7-7

C. REMOVING THE DOOR INTERLOCK

SWITCHES (Figures 9, 10)

(1) Disconnect the wire leads from the interlock

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.

Latch Board

Primary Interlock Switch

Monitor Interlock Switch

Secondary Interlock Switch

Latch Board

Primary
Interlock Switch

Monitor
Interlock Switch

Secondary
Interlock Switch

Figure 9

Figure 10

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Содержание 721.80402400

Страница 1: ...OWAVE HOOD COMBINATION MODEL 721 80402400 721 80402401 721 80402402 721 80409400 721 80409401 721 80409402 721 80404400 721 80404401 721 80404402 721 80403400 721 80403401 721 80403402 May 2005 MODEL...

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: ...NS 4 2 OVERALL CIRCUIT DIAGRAM 5 1 SCHEMATIC DIAGRAM I 5 1 SCHEMATIC DIAGRAM II 5 2 MATRIX CIRCUIT FOR TOUCH KEY BOARD 5 3 GENERAL INFORMATION FOR SERVICE 6 1 GENERAL PRECAUTIONS IN USE 6 1 TRIAL OPER...

Страница 4: ...y 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 O...

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 5 7 8 11 15 18 20 21 3 4 6 9 10 12 13 14 16 17 19 22...

Страница 8: ...owed by number pads to thaw frozen meat by weight 11 Number Pads Touch number pads to enter cooking times cook powers quantities weights or food categories 12 Express Defrost Touch this pad to express...

Страница 9: ...RMOSTAT OVEN FUSE BK BK O L PRIMARY SWITCH RD RD RD RD F M T T M BN MONITOR SWITCH TRANSFORMER H V FA F WH V M H V CAPACITOR C L S M HIGH C CONDENSER BL THERMISTOR SECONDARY SWITCH YL BK RD WH LOW RD...

Страница 10: ...RELAY POWER RY2 RY1 MAIN RELAY 1 2 3 1 3 1 2 3 5 5 4 4 5 4 6 6 7 8 6 1 2 2 1 RY14 LAMP C TOP HIGH RELAY RY15 RELAY C TOP LOW LAMP FAN VENT HIGH RY11 RY12 FAN LOW VENT BK YL BL WH 8 PIN CONNECTOR CN1 C...

Страница 11: ...5 3 MATRIX CIRCUIT FOR TOUCH KEY BOARD KEY MATRIX...

Страница 12: ...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 13: ...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 14: ...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 15: ...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...

Страница 16: ...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 17: ...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 18: ...rning 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...

Страница 19: ...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 20: ...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 21: ...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 22: ...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 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: ...1 Remove lead wires 2 Measure resistance ohm meter scale Rx1 High Speed BL BK Wire Low Speed BL WH Wire 1 Remove wire leads 2 Measure resistance ohm meter scale Rx1000 VENTILATION MOTOR TURNTABLE MOT...

Страница 29: ...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 1 2 3 4 5 6 7 8 9 10 11 1...

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 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 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 2 DOOR PARTS II 1005 1000 1002 1006 1011 1007 1009 1004 W109 1381 1008 EV...

Страница 38: ...8 4 CONTROLLER PARTS II 2004 2381 2008 2006 W106 MBM2 EV...

Страница 39: ...8 5 OVEN CAVITY PARTS 3010 W109 3001 3029 3014 6038 6001 6000 3011 3025 W121 W118 3026 3028 W121 W118 3018 3036 3024 W142 W138 For Model For Model 5036 3003 MFL1 MFL3 EV...

Страница 40: ...8 6 LATCH BOARD PARTS 4001 W111 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 W104 5008 5035 W109 W101 EV...

Страница 42: ...5006 5010 5001 5016 5005 5014 W105 5044 3004 3027 5024 5029 W101 W144 5412 W110 5012 5007 Check the Model No Check the Model No Check the Model No Check the Model No EV Check the rating label of Model...

Страница 43: ...8 10 INSTALLATION PARTS 6008 W109 6011 6010 VINYL BAG 6009 EV...

Страница 44: ...P NO 3828W5S5223 Printed in Korea...

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