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7-17

COMPONENTS

TEST RESULTS

Normal:
Approximately 20 to 40 ohms
Abnormal:Infinite

Normal: Approximately
2.0 to 3.0 Kohms
Abnormal:
Infinite or several.

Normal:
Approximately
BK-RD: 6.0 Kohms
RD-WH: 3.0 Kohms
BK-WH: 3.0 Kohms
Abnormal:
Infinite or approx. 0 ohm

1.Remove lead wires.
2.Measure resistance.

(ohm meter scale:Rx1)

1. Remove wire leads.
2. Measure resistance.

(ohm meter scale: Rx1000)

VENTILATION MOTOR

TURNTABLE MOTOR

1. Disconnect sensor connector from micom

computer board.

2. Measure resistance terminal to terminal (ohm

meter scale: R X 1000)

ABSOLUTE HUMIDITY
SENSOR

1.Remove lead wires.
2.Measure resistance.

(ohm meter scale:Rx1000)

Normal:
Approximately 120 to 135 ohms
Abnormal:Infinite

STIRRER MOTOR

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Содержание 721.80832500

Страница 1: ...DIVISION 22 BASIC FIELD MANUAL FOR MICROWAVE HOOD COMBINATION MODEL 721 80832500 721 80833500 721 80834500 721 80839500 May 2005 MODEL 721 80832 721 80833 721 80834 721 80839...

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: ...ROL PANEL 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...

Страница 4: ...itch Interlock Monitor Switch Magnetron 2M282J Toshiba Cook top Lamp 130 V 35 W Halogen Cavity Lamp 130 V 35 W Halogen Timer Digital up to 99 min in each cooking stage Tray Tempered Safety Glass Overa...

Страница 5: ...OUCH any oven components or wiring during 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 Ma...

Страница 6: ...o 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 el...

Страница 7: ...4 1 OPERATING INSTRUCTIONS CONTROL PANEL...

Страница 8: ...or after the oven begins to cook retouch start 4 STOP CLEAR Touch this pad to stop and cancel any oven function 5 MANUAL COOK Touch this pad for manual control of cook time and power level 6 POPCORN T...

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

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

Страница 11: ...he cavity 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 int...

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: ...ervicing The power density 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 pe...

Страница 14: ...this manual 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 measurem...

Страница 15: ...ESPECIALLY 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 p...

Страница 16: ...INSERT THE F P C 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...

Страница 17: ...he 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 two screws on the right central edge of Base plate Remove the Mount A...

Страница 18: ...nterlock 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 WIRE COLOR SYMBOL COLOR...

Страница 19: ...the magnetron make sure that its dome does not hit any adjacent parts or it may be damaged When replacing the magnetron be sure to install the magnetron gasket in the correct position and be sure that...

Страница 20: ...draw the door NOTES After replacing the door be sure to check that the primary interlock switch the secondary interlock switch and the interlock monitor switch is in good operating normally After rep...

Страница 21: ...not mounted properly microwaves may leak from the clearance between the door and the oven I REMOVING THE VENTILATION MOTOR 1 Remove the mounting plate by loosening mounting plate screws 1 or 2 screws...

Страница 22: ...isconnect the leadwire from the turntable motor terminals 5 Remove the 1 screws securing the turntable motor to the oven cavity ASS Y Figure 21 NOTES Remove the leadwire from the turntable motor VERY...

Страница 23: ...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...

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: ...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 sw...

Страница 26: ...ads 2 Measure resistance ohm meter scale Rx1 Primary winding High Low Secondary winding Filament winding 3 Measure resistance ohm meter scale Rx1000 Primary winding to ground Filament winding to groun...

Страница 27: ...cale 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 l...

Страница 28: ...0 ohm 1 Remove lead wires 2 Measure resistance ohm meter scale Rx1 1 Remove wire leads 2 Measure resistance ohm meter scale Rx1000 VENTILATION MOTOR TURNTABLE MOTOR 1 Disconnect sensor connector from...

Страница 29: ...lastic 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 MI...

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: ...the high voltage Systems the interlock switches the door sensing and the relay check good 3 The unit with a normal relay continuously operates 4 The buzzer does not sound or continues to sound 5 Some...

Страница 33: ...ru 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 corr...

Страница 34: ...M E Display does not start countdown when START key is touched Check 1 TOUCH KEY BOARD START KEY FUNCTION Check 1 AIR VENTS PROBLEM D Unit operation seems to be normal but no heating is produced in ov...

Страница 35: ...7 24 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...

Страница 36: ...7 25 PROBLEM F No buzzing when touching the key between stages or at end of cooking 1 PROBLEM G Ventilation fan does not operate when VENT ON OFF key is touched 1 Check 1 POWER SUPPLY 2 FUSE...

Страница 37: ...8 1 EXPLODED VIEW DOOR PARTS 1005 1382 1381 1008 1000 1002 1004 1007 1006 1011 W209 1009 W171 FOR 721 80833 ONLY EV FOR MODEL 721 80832500 721 80833500 721 80834500 721 80839500...

Страница 38: ...8 2 CONTROLLER PARTS 2381 2008 2006 2004 2400 07 W130 2000 2002 2381 2008 2006 2004 2400 07 W130 EV FOR MODEL 721 80832500 721 80834500 721 80839500 FOR MODEL 721 80833500...

Страница 39: ...3031 3001 3005 3026 3025 3011 3018 6000 3036 3037 3029 3102 3032 5382 3010 3024 3003 3038 W109 W178 W202 W121 W138 W142 W138 W142 W138 W142 FOR 721 80832500 721 80834500 FOR 721 80833 only FOR 721 808...

Страница 40: ...8 4 LATCH BOARD PARTS 4000 W102 4001 4002 4003 4002 4004 EV...

Страница 41: ...TERIOR PARTS I 3002 3381 Back Roller part is Tray Assembly Included 5003 5007 5012 5008 5049 3009 W105 W173 5051 3007 5023 5009 5002 5000 5018 W108 W108 W109 W109 W109 W110 W101 5058 5043 5062 W210 50...

Страница 42: ...W150 5707 3027 5041 5027 5011 5014 5010 5037 5029 5006 5016 W144 W109 5001 5412 W178 5045 5382 5800 W202 5056 3550W1A171B 4931W1A011D 3034W1A004A Discord original for parts supplied Change pieces simu...

Страница 43: ...8 7 INSTALLATION PARTS 6008 6011 6009 6010 01 USE CARE 07 TECHNICAL CARD 02 05 COOKING GUIDE LABEL 06 TEMPLATE 04 1 INSTALLATION MANUAL INSTALLATION MANUAL SVC MANUAL 04 2 EV...

Страница 44: ...P NO 3828W5S6175 Printed in Korea...

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