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5-9

COMPONENTS

TEST PROCEDURE

RESULTS

HIGH VOLTAGE
CAPACITOR

HIGH VOLTAGE
DIODE

NOTE :
Some inexpensive meters
may indicate infinite
resistance in both direction.

Measure the resistance.
(Ohm-meter scale: Rx1000)
¥ Terminal to terminal.

Measure the resistance.
(Ohm-meter scale: Rx1000)
¥ Terminal to case.

Measure the continuity (Forward).
(Ohm-meter scale: Rx10000)

Measure the continuity (Reverse).
(Ohm-meter scale: Rx10000)

Normal: Momentarily indicates

several ohms, and
then gradually returns
to infinite.

Normal: Infinite.

Normal: Continuity.
Abnormal: Infinite.

Normal: Infinite.
Abnormal: Continuity.

NOTE: When testing the magnetron, be sure to install the magnetron gasket

in the correct position and be sure that the gasket is in good condition.

Antenna

Gasket

Chassis

Filament

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Содержание RCS10A

Страница 1: ...R Microwave Oven Service Manual RCS10MPA CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL RCS10MPSA RFS12MPSA RFS12G ...

Страница 2: ...eration 2 proper door closing 3 seal and sealing surfaces arcing wear and other damage 4 damage to or loosening of hinges and latches 5 evidence of dropping or abuse C Before turning on microwave power for any service test or inspection within the microwave generating compartments check the magnetron wave guide or transmission line and cavity for proper alignment integrity and connections D Any de...

Страница 3: ...ROL PANEL 4 1 OPERATION 4 3 PROGRAMMING 4 4 SCHEMATIC DIAGRAM 4 6 CIRCUIT DESCRIPTION 4 7 SERVICE INFORMATION 5 1 TOOLS AND MEASURING INSTRUMENTS 5 1 MICROWAVE LEAKAGE TEST 5 1 MEASUREMENT OF MICROWAVE POWER OUTPUT 5 3 DISASSEMBLY AND ADJUSTMENT 5 3 INTERLOCK CONTINUITY TEST 5 7 COMPONENT TEST PROCEDURE 5 8 TROUBLE SHOOTING 5 11 CONTENTS ...

Страница 4: ... Full power 50 Med Low approx 50 of Full power 20 Low approx 20 of Full power Time chart 1 1 This microwave oven is designed for commercial use only It is not recommended for buelt in Installation ITEM MODEL Power Requirement Power Output Microwave Frequency Magnetron Timer Outside Dimensions Cavity Dimensions Net Weight Shipping weight Control Complement Nameplate Location Accessories DESCRIPTION...

Страница 5: ... 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 2 1 CAUTIONS Unlike other appliances the microwave oven is high voltage and high current equipment Though it is free fro...

Страница 6: ...ave oven in an ambient temperature less than 104 F 40 C 6 Place the microwave oven as far away as possible from TV RADIO COMPUTER etc to prevent interference 7 Place the microwave oven on a stardy and flat surface 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 electrical shock T...

Страница 7: ...me If no power level is selected oven operates at 100 power Use to exit programming mode and stop cooking during cooking cycle Use to start ÒManual Time EntryÓ program or restart interrupted cooking cycle Use to advance to next user option Use to save times and power levels when programming pads TIME ENTRY Pads 1 0 HOLD 0 DEFROST 20 MEDUIM 50 MED HI 70 STOP RESET START 4 1 OPERATING INSTRUCTIONS W...

Страница 8: ...4 2 OPERATING INSTRUCTIONS ...

Страница 9: ...me If no power level is selected oven operates at 100 power Use to exit programming mode and stop cooking during cooking cycle Use to start ÒManual Time EntryÓ program or restart interrupted cooking cycle Use to advance to next user option Use to save times and power levels when programming pads TIME ENTRY Pads 1 0 HOLD 0 DEFROST 20 MEDUIM 50 MED HI 70 STOP RESET START 4 3 OPERATING INSTRUCTIONS W...

Страница 10: ...time If no power level is selected oven operates at 100 power Use to exit programming mode and stop cooking during cooking cycle Use to start ÒManual Time EntryÓ program or restart interrupted cooking cycle Use to advance to next user option Use to save times and power levels when programming TIME ENTRY Pads 1 0 HOLD 0 DEFROST 20 MEDUIM 50 MED HI 70 STOP RESET START OPERA TING INSTRUCTIONS Window ...

Страница 11: ...me If no power level is selected oven operates at 100 power Use to exit programming mode and stop cooking during cooking cycle Use to start ÒManual Time EntryÓ program or restart interrupted cooking cycle Use to advance to next user option Use to save times and power levels when programming pads TIME ENTRY Pads 1 0 HOLD 0 DEFROST 20 MEDUIM 50 MED HI 70 STOP RESET START 4 5 OPERATING INSTRUCTIONS W...

Страница 12: ...ven does not heat for programmed time If no power level is selected oven operates at 100 power Use to exit programming mode and stop cooking during cooking cycle Use to start Manual Time Entry program Use to automatically increase the programmed time for double quantities or restart interrupted cooking cycle Use to advance to next user option Use to save times and power levels when programming pad...

Страница 13: ...n 1 heating stage is programmed total time for all stages displays COOK shows when oven is operating 20 indicates the microwave power level used If power level does not show oven is heating at 100 power Programming Displays Indicates programming mode See ÒProgrammingÓ section of manual for programming procedure Indicates programming user options mode See ÒUser OptionsÓ section of manual for progra...

Страница 14: ...ds when heating timing elapses Operating QTY 2X Pads QTY 2X 2 Press desired number pad Example press 18 sec Preprogrammed Times and Cook Level All preprogrammed pads arrive set at full power Option Single Digit Pads 11 12 13 14 15 16 17 18 19 20 Heating Times 10 sec 20 sec 30 sec 45 sec 1 min 1 30 min 2 min 3 min 4 min 5 min Heating Times 20 sec 40 sec 1 min 1 30 min 2 min 3 min 4 min 6 min 8 min ...

Страница 15: ...n memory Repeat step 3 6 to program additional pads 7 Press STOP RESET pad or close oven door to exit programming mode Multiple Heating Stages Follow instructions below to program oven to perform 3 consecutive heating cycles without interruption 1 Open oven door If door is closed or STOP RESET pad is pressed before finishing programming sequence oven exits programming mode 2 Press pad 1 for approx...

Страница 16: ...Setting 1 OP 10 3 second continuous beep End of Cycle Beep OP 11 Continuous Beep until door is opened OP 12 5 beeps bursts until door is opened 2 OP 20 Eliminates beep Speaker Volume OP 21 Sets volume to low 60 70dB OP 22 Sets volume to medium 70 80dB OP 23 Sets volume to high 80 90dB 3 OP 30 Prevents signal when pad is pressed Key Beep OP 31 Allows signal when pad is pressed 4 OP 40 30 seconds af...

Страница 17: ...SCHEMATIC DIAGRAM 4 11 ...

Страница 18: ...netron to heat the magnetron filament through two noise preventing choke coils A high voltage of approximately 2100 volts AC is generated in the secondary of the high voltage transformer which is increased by the action of the high voltage diode and charging of the high voltage capacitor The negative 4 000 Volts DC is applied to the filament of the magnetron WHEN THE OVEN IS SET AT ANY LEVEL EXCEP...

Страница 19: ...tion leakage MEASURING MICROWAVE ENERGY LEAKAGE Pour 275 15cc of 20 5 C 68 9 F water in a beaker which is graduated to 600 cc and place the beaker on the center of the turntable Set the energy leakage monitor to 2 450 MHz and use it following the manufacturer s recommended test procedure to assure correct result When measuring the leakage always use the 2 inch 5cm spacer supplied with the probe Op...

Страница 20: ...e test probe must be removed no faster than 1 inch sec 2 5 cm sec along the shaded area otherwise a false reading may result The test probe must be held with the grip portion of the handle A false reading may result if the operator s hand is between the handle and the probe When testing near a corner of the door keep the probe perpendicular to the surface making sure the probe horizontally along t...

Страница 21: ...tput P in watts is calculated from the following formula 4187 x T T is measured while the microwave generator is operating at full power Magnetron filament heat up time is not included about 3 sec The water is stirred to equalize temperature throughout the vessel prior to measuring the final water temperature Stirring devices and measuring instruments are selected in order to minimize addition or ...

Страница 22: ...door be sure to check that the primary switch monitor switch and secondary switch operate normally 2 After replacing the door check for microwave energy leakage with a survey meter Microwave energy must be below the limit of 4 mW cm2 with a 275 ml water load 3 When mounting the door assembly to the oven assembly be sure to adjust the door assembly parallel to the chassis Also adjust so the door ha...

Страница 23: ...5 5 ...

Страница 24: ...ket K INTERLOCK SYSTEM 1 INTERLOCK MECHANISM The door lock mechanism is a device which has been specially designed to eliminate completely microwave activity when the door is opened during cooking and thus to prevent the danger resulting from the microwave leakage 2 MOUNTING OF THE PRIMARY MONITOR SECONDARY SWITCHES TO THE LATCH BOARD 3 INSTALLATION AND ADJUSTMENT OF THE LATCH BOARD TO THE OVEN AS...

Страница 25: ...or is closed meter should indicate an closed circuit 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 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 do...

Страница 26: ...TS HIGH VOLTAGE TRANSFORMER Wire leads removed MAGNETRON Wire leads removed 1 Measure the resistance Ohm meter scale Rx1 and Rx100 Primary winding Secondary winding Filament winding 2 Measure the resistance Ohm meter scale Rx1000 Primary winding to ground Filament winding to ground 1 Measure the resistance Ohm meter scale Rx1 Filament terminal 2 Measure the resistance Ohm meter scale Rx1000 Filame...

Страница 27: ... Terminal to case Measure the continuity Forward Ohm meter scale Rx10000 Measure the continuity Reverse Ohm meter scale Rx10000 Normal Momentarily indicates several ohms and then gradually returns to infinite Normal Infinite Normal Continuity Abnormal Infinite Normal Infinite Abnormal Continuity NOTE When testing the magnetron be sure to install the magnetron gasket in the correct position and be ...

Страница 28: ...ec 7 9 sec 3 sec 8 10 sec 2 sec 9 11 sec 1 sec 10 12 sec 0 sec Normal Approx 3 3 5 kohm Abnormal Infinite or several ohm NOTE A MICROWAVE LEAKAGE 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 FROM THE PARTS BE SURE TO GRASP THE CONNECTOR NOT THE WIRES Relay 3 BLOWER MOTOR Wire leads removed M...

Страница 29: ...s panel to discharge any static charge built up in your body Micom model only CONDITION Microwave oven does not work Inserting many plugs into one outlet and using them at the same time blown fuse or breaker Microwave oven plug is not inserted tightly Output power is too low Low AC input voltage Food temperature is too low Using metallic ware and allowing it to touch the oven wall Sparks occur Inc...

Страница 30: ... does not turn on after setting cooking cycle 11 Display time of day does not reappear when cooking is finished 5 12 TROUBLE 1 The following visual conditions indicate a probable defective control circuit CONDITION CHECK RESULT CAUSE REMEDY 1 No input can be programmed Continuity No continuity Defective PCB assembly Loose connection Replace PCB assembly Connect them tightly Check the conn ection b...

Страница 31: ...tch with door opened 2 Fuse does not blow No continuity Continuity No continuity Defective power supply cord Replace power supply cord Defective thermostat Replace thermostat Check continuity of thermostat Check continuity of power supply cord TROUBLE 2 Oven does not operate at all Display window does not display any figures and no input is accepted NOTE All these switches must be replaced at the ...

Страница 32: ...ws all figures set but oven does not start cooking while desired program times are set and START pad is touched TROUBLE 4 Oven seems to be operating but little heat is produced in oven load NOTE Simple test of power output conducted by heating one liter water for one min if available Minimum 8 5 C temperature rise is normal condition CONDITION CHECK RESULT CAUSE REMEDY Output is low Lower than 90 ...

Страница 33: ... relay 2 and check continuity relay 2 Operate the unit Abnormal Defective high voltage capacitor Replace high voltage capacitor Normal Check high vol tage capacitor Abnormal Defective high voltage diode Replace high voltage diode Normal Check high vol tage diode Abnormal Defective magnetron Replace magnetron Check magnetron TROUBLE 5 No microwave oscillation even though oven lamp and fan motor run...

Страница 34: ...DOOR PARTS CONTROL PANEL PARTS LATCH BOARD PARTS BASE PLATE PARTS OVEN CAVITY PARTS INTERIOR PARTS 6 1 EXPLODED VIEW INTRODUCTION MODEL RCS10PBDA RFS12G EV ...

Страница 35: ...6 2 EXPLODED VIEW MODEL RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12MPSA RFS12SW2A DOOR PARTS CONTROL PANEL PARTS LATCH BOARD PARTS BASE PLATE PARTS INTERIOR PARTS OVEN CAVITY PARTS INTRODUCTION EV ...

Страница 36: ... EV 6 3 1384 W136 1006 1007 W108 W105 1386 1009 W207 W206 1385 1004 1005 1013 1000 1002 DOOR PARTS MODEL RCS10A RCS10MPA RCS10MPSA RCS10PBDA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G ...

Страница 37: ...6 4 2012 2000 2400 2005 2006 2381 W130 W102 CONTROL PANEL PARTS MODEL RCSPBDA RFS12G EV ...

Страница 38: ...6 5 2012 2400 2005 2006 2381 W130 2000 2002 W102 CONTROL PANEL PARTS MODEL RCS10PBDA EV ...

Страница 39: ...2004 2000 2381 2002 2006 W130 W102 CONTROL PANEL PARTS MODEL RCS10A RCS10MPA 6 6 EV ...

Страница 40: ...6 7 2004 2000 2006 2381 W130 W102 CONTROL PANEL PARTS MODEL RCS10SW2A RCS10MPSA RFS10SW2A RFS12MPSA RFS12SW2A EV ...

Страница 41: ...6 8 7037 9000 3001 5045 W121 W109 W158 W121 W109 3009 W105 W109 3004 5024 W109 W108 OVEN CAVITY PARTS MODEL RCS10PBDA RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G EV ...

Страница 42: ...6 9 4003 4000 4009 W102 W117 4002 4004 4008 4001 LATCH BOARD PARTS MODEL RCS10PBDA RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G EV ...

Страница 43: ...08 W101 W108 W105 W101 W101 W101 5202 5041 5103 5059 5067 5201 5010 W101 W108 W109 5104 5009 W104 W101 W109 5001 5051 5000 5203 5302 W109 5008 5019 5018 3381 3028 9000 5061 INTERIOR PARTS MODEL RCS10PBDA RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G EV ...

Страница 44: ...6 11 6001 6000 W121 W108 6013 W121 3026 3901 3902 W162 BASE PLATE PARTS MODEL RCS10PBDA RCS10A RCS10MPA RCS10MPSA RFS10SW2A RFS12SW2A RFS12MPSA RFS12G EV ...

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