Service Manual - Appliance Factory Parts
Contents
1. 6 1 GENERAL PRECAUTIONS IN 05 6 1 TRIAL OPERATION ii rare i tn t e apt oed oe er cedo ru dat Put 6 1 FEATURES AND SPECIFICATIONS FEATURES ln teretes enne enn namen 6 1 SERVICE INFORMATION A PCR aa os 7 1 PRECAUTIONS AND REPAIR SERVICE neret 7 1 MICROWAVE LEAKAGE TEST is ettet A rete ao p e ttd IH 7 2 POWER OUTPUT 7 3 DISASSEMBLY INSTRUCTIONS entrent tbid epis aaa Fea NR ERE REA AERE REA ta RR FEL Rec RdA NR RARE daga abd pne 7 4 INTERLOCK SYSTEM s att pee nr i ec ve re EAR a eee tarea feines 7 12 INTERLOCK CONTINUITY TEST u ne ep ana aka en al seta 7 14 TEST AND CHECKOUT PROCEDURES AND TROUBLESHOOTING ena 7 15 TEST PROGEDURES tee isn L 7 15 B CHECKOUT PROCEDURES a a 7 20 C TROUBLESHOOTING a a a a a a aa aE A A aa a Eea aia 7 23 EXPLODED VIEW signe di L AANE E A a a u 8 1 REPLACEMENT PARTS LIST eerie e ridet ys euren BA 9 1 SPECIFICATIONS Rated Power Consumption Microwave Output Frequencv Power Supplv Rated Current Magnetron Cooling Rectification Door Sealing Safetv Devices Magnetron Cook top Lamp Cavitv Lamp Timer Trav Overall Dimensions Oven Cavitv Size Effective Capacity of Oven Cavity Accessories Microwave 1600W Convection 12. CU SERVICE NSTALLATION 04 gt a E 85 8 7
3. Figure 19 7 9 H ASSEMBLING DOOR 1 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 has no play between the inner door surface and oven frame assembly If the door assembly is not mounted properly microwaves may leak from the clearance between the door and the oven Space e t I REMOVING THE VENTILATION MOTOR 1 Remove the mounting plate by loosening mounting plate screws 1 or 2 screws securing it to the back plate See Figure 18 2 Remove MOUNT ALL by loosening one screw securing the ventilation Motor and back plate See Figure 19 a 3 Carefully pull the ventilation motor ASS Y out of the microwave oven See Figure 19 b MOUNT ALL Figure 19 a Figure 19 b J REPLACING THE HUMIDITY SENSOR For sensor model only 1 Remove the sensor by removing two screws securing it to the air duct See Figure 19 c 2 Mount the new humidity sensor to the air duct Figure 19 c K REMOVING THE TURNTABLE MOTOR 1 Remove the turntable 2 Remove the turntable shaft VERV CAREFULLV with a slotted screwdriver Figure 21 3 Remove the base plate bv removing 7 screws securing it to the oven cavitv Figure 22 a 4 Disconnect the leadwire from the turntable motor terminals 5 Remove the 2 screws securing the turntable motor to the oven cavitv ASS V Figure 22 b Figure 20 Wire Leads
4. 5 Some segments of one or more digits do not light up or they continue to light up or segments light when they should not 6 Wrong figures appear 7 The figures of all digits 8 Some of the indicators do no flicker light up 9 The clock does not keep time properly NOTE A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON 7 22 C TROUBLE SHOOTING WHEN YOU GET A COMPLAINT FROM VOUR CUSTOMER EVALUATE THE COMPLAINT CAREFULLY IF THE FOLLOWING SYMPTOMS APPLY PLEASE INSTRUCT THE CUSTOMER IN THE PROPER USE OF THE TOASTER AND MICROWAVE OVEN THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL CAUTIONS 2 Be careful of the high voltage circuit 3 Discharge the high voltage capacitor to your meter Micom model only 1 Check grounding and cool this unit before checking for trouble 4 When checking the continuity of the switches or of the high voltage transformer disconnect one lead wire from these parts and then check continuity with the AC plug removed To do otherwise may result in a false reading or damage 5 Do not touch any part of the circuit on the PCB since static electric discharge may damage this control panel Always touch yourself to ground while working on this panel to discharge any static charge built up in your body CONDITION Microwave oven CAUSE does not work Inserting many plugs into one outlet
5. Turntable Motor Figure 22 b NOTES Remove the leadwire from the turntable motor VERV CAREFULLV Be sure to grasp the connector not the wires when removing L REMOVING CONVECTION HEATER AND THERMISTOR Figure 23 1 Remove the out case 2 Remove the air duct by removing six screws securing it to the oven front plate guide air and glasswool L cover 3 Disconnect the wire leads of air duct 4 Remove the magnetron 5 Remove the latch board assembiv 6 Remove the bottom plate by removing four screws 7 Remove the four net screws securing chamber assembiv 8 Lift the chamber assembiv from the oven cavitv 9 Remove three screws securing the heater of the chamber assembiv 10 Lift the convection heater from the chamber assembly Figure 23 INTERLOCK SVSTEM INTERLOCK MECHANISM The door lock mechanism is a device which has been speciallv designed to eliminate microwave activitv when the door is opened during cooking and thus to prevent the danger resulting from the microwave leakage ADJUSTMENT PROCEDURES To avoid possible exposure to microwave energv leakage adjust the door latches and interlock switches using the following procedure The Interlock Monitor and Primarv Interlock Switch act as the final safetv switch protecting the user from microwave energv The terminals between COM and NC of the Interlock Monitor must close when the door is opened After
6. 3 mm and an outside diameter of approximately 7 6 190mm 3 The oven and the empty vessel are at ambient Temperature TO prior to the start of the test 4 The initial temperature T1 of the water is 10 1 50 F It is measured immediately before the water is added to the vessel After addition of the water to the vessel the load is immediately placed on the center of the turntable which is in the lowest position and the microwave power switched on 5 The time t for the temperature of the water to rise by a value T of 10 1 K is measured where t is the time in seconds and T is the temperature rise The initial and final water temperatures are selected so that the maximum difference between the final water temperature and the ambient temperature is 5 K 6 The microwave power output P in watts is calculated from the following formula NOTE WHEN MEASURING 1 Do not exceed meter full scale deflection 2 The test probe must be removed no faster than 1 inch sec 2 5cm 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 is moved horizontally along the oven surface 3 4 RECORD KEEPING AND NOTIFICATION AFTER MEASUREMENT 1 After
7. 4 Sensor Touch 8 BR _ ____ 6 9 D 6 B ON OFF 5 SPEED le en DOTRC17SS 4 1 CONTROL PANEL INSTRUCTIONS 1 DISPLAV The Displav includes a clock and indicators to tell vou time of dav cooking time settings and cooking functions selected MICRO Touch this pad when setting Microwave cooking CONV Touch this pad when setting Convection cooking COMBI Touch this pad when setting combination cooking or preheat SENSOR POPCORN Touch this pad when popping popcorn in vour microwave oven The oven s sensor will tell the oven how long to cook depending on the amount of humiditv it detects from the popcorn SENSOR COOK Touch this pad to cook baked potato frozen vegetable fresh vegetable canned vegetable frozen entr e and rice The oven s sensor will tell the oven how long to cook depending on the amount of humidity coming from the food SENSOR REHEAT Touch this pad to reheat casserole dinner plate pizza slice and soup sauce The oven s sensor will tell the oven how long to cook depending on the amount of humidity coming from the food SPEED AUTO COMBI Touch this pad when setting weight combination cooking AUTO COOK Touch this pad to cook Bacon Fresh Roll amp Muffin Frozen Roll 8 Muffin Beverage Chicken Pieces and Hot Cereal 10 AUTO DEFROST Touch this pad to select food type and defrost f
8. AUTO COMBI CUSTOM SET POWER A AUTO COOK A N C A ON OFF A TURNTABLE STOP CLEAR A A TIMER A KITCHEN ENTER START A CLOCK 8 MORE A GENERAL INFORMATION FOR SERVICE GENERAL PRECAUTIONS IN USE Never operate the unit when it is empty Operating the oven with no load mav shorten the life of the magnetron Whenever cooking dry foods dried fish bread etc or a small amount of food be sure to put a glass of water into the cooking compartment The glass turntable may become hot after operating be careful when touching it Aluminum foil should be avoided because it will disrupt cooking and may cause arcing However small pieces may be used to cover some parts of food to slow the cooking Any aluminum foil used should never be closer than 2 5 cm to any side wall ofthe oven TRIAL OPERATION After installation the following sequences and results should be checked carefully A B Put a container filled with water about 1 liter into the oven and close the door tightly Set cooking time for 10 minutes by touching 1 and then 0 three times 1 0 0 0 appears in the display window Touch the START ENTER key Make sure the cavity light comes on The unit will begin cooking and the display window will show the time counting down by seconds After about 5 minutes make sure the pri
9. 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 control panel circuit A resulting static electric discharge may damage this P C B NEVER operate the oven with no load NEVER injure the door seal and front plate of the oven cavity NEVER put iron tools on the magnetron NEVER put anything into the latch hole and the interlock switches area 2 1 MICROWAVE RADIATION Personnel should not be exposed to the microwave energy which may radiate from the magnetron or other microwave generating device if it is improperly used or connection All input and output microwave connections waveguide flange and gasket must be secure never operate the device without a microwave energy absorbing load attached Never look into an open waveguide or antenna while the device is energized Proper 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 sure that the magnetron gasket is properly installed around the dome of the tube whenever installing the magnetron ANTENNA Gasket COOLING FIN MAGNETRON CHASSIS GROUND MAGNETRON THE OVEN IS TO BE SERVICED ONLY BY PROPERLY QUALIFIED SERVICE PERSONNEL INSTALLATIONS BEFORE YOU BEG
10. TROUBLE 2 Microwave oven does not operate at all Display window does not display any figures and no input is accepted cord 7 25 supply cord CONDITION CHECK RESULT CAUSE REMEDY Check continuity TEE Malfunction of the Replace fuse RUSS blows of monitor F gt monitor switch primarv monitor switch with switches and door closed MT RELAY RY8 of No continuity P C B Assembly Replace fuse Check continuity _ Continuity L Shorted contact at gt Replace fuse of primary the primary switch primary monitor switch with PBN switches and door opened nig RELAY RY8 of No continuity P C B Assembly Disconnect one Defective high Replace high i gt side of the wire gt Normal voltage capacitor voltage capacitor lead connected from transformer Defective high volt Replace high volt l l F m gt to the high NN age transformer age transformer voltage capacitor and operate the unit 2 Fuse does not Check continuity Defective Replace blow of magnetron No continuing thermostat thermostat thermostat Continuity Check continuity mm No continuity gt Defective power gt Replace
11. I O CON from the circuit board Does the unit still operate 5 GOOD i je Defective Replace the circuit board Replace Wire Assemblv Wire Assembly Remove the mate connector of I O CON from the circuit board Does the unit still operate VES pe Defective Wire Assembly VES GOOD Replace the circuit board Replace Wire Assembly PROBLEM B FAN motor turns on When the door is closed and START ENTER key is touched PROBLEM B Oven lamp turns on When the door is closed and START ENTER key is touched ns pe 1 10 of CN1 Voltage reading 120 V AC GOOD Measure the voltage at pin NO Replace the Defective circuit board FAN motor Replace FAN motor T 21 ji 5 Measure the voltage at pin NO 1 10 of CN1 Voltage reading 120 V AC pe Replace the Defective circuit board Oven lamp Replace Oven lamp 3 CHECKOUT PROCEDURES FOR CIRCUIT BOARD The following symptoms indicate a defective circuit board 1 The start function fails to operate but the high voltage Systems the interlock switches the door sensing and the relay check good 2 The unit with a normal relay continuously operates 3 Proper temperature measurement is not obtained 4 The buzzer does not sound or continues to sound
12. Replace high tage diode BPO voltage Diode voltage Diode normal Check Defective Replace Magnetron 9001181 magnetron magnetron NOTE Make sure the wire leads are in the correct position When removing the wire leads from parts be sure to grasp the connector not the wires When removing the magnetron be sure to install the magnetron gasket in the correct position and in good condition Output is full power when you set lower power level Disconnect the wire leads from m Abnormal Defective PCB assembiv Replace PCB assembiv relav 8 and check continuitv relav 8 Operate the unit T 27 TROUBLE 6 Convection oven does not operate at all or convection cook is bad CONDITION CHECK RESULT CAUSE REMEDV Convection indicator Check the Relay Abnormal Defective Relay Replace Relay light but oven does 10 of P C B 10 10 not go into cycle assembiv when START ENTER L Normal pad is touched Zee No continuity gt Loose connection Connect them connect
13. Sec 6 14 8 Sec 7 16 Sec 6 Sec 8 18 Sec 4 Sec 9 20 Sec 2 Sec 10 225 0 Sec 1 Measure continuitv ohm meter scale Rx1 Convection OFF 2 Remove the lead wires and operate Cooking Start oven at Convection Cooking 00 o o N AN FAN MOTOR 1 Remove wire leads Normal CIRCULATION MOTOR 2 Measure resistance Approximately ohm meter scale Rx1 Fan Cir 35 55 ohm 25 40 ohm ohm Abnormal Infinite or several 7 16 COMPONENTS VENTILATION MOTOR TEST Remove wire leads 2 Measure resistance ohm meter scale Rx1 RESULTS Normal Approximatelv 25 to 45 ohm DAMPER MOTOR D M TURNTABLE MOTOR T M STIRRER MOTOR S M THERMISTOR Remove wire leads 2 Measure resistance ohm meter scale Rx1000 Remove the connector from PCB 2 Measure resistance across pins 1 amp 3 ohm meter scale Rx1 Normal Approximatelv D M T M S M 2 3 3 5 2 6 3 5 100 170 Kohm Kohm ohm Abnormal Infinite or several Normal Approximately 250 to 350 Kohm at 68 35 F Abnormal Infinite or several HEATER ELEMENT Remove wire leads 2 Measure resistance ohm meter scale Rx1 Normal Approximately Conv HTR 15 25 Abnormal Infinite or several SENSOR 1 Remove the 3 pin connector from PCB 2 Measure resistance across pins 1 amp 2 3 Across pins 2
14. adjustment and repair of any microwave energy interruption or microwave energy blocking device record the measured values for future reference Also enter the information on the service invoice Should the microwave energy leakage not be more than 1 mW cm after determining that all parts are in good condition functioning properly and genuine replacement parts which are listed in this manual have been used At least once a year have the electromagnetic energy leakage monitor checked for calibration by its manufacturer 2 3 4 187 Mw T2 T1 0 55Mc T2 TO t is measured while the microwave generator is operating at full power Magnetron filament heat up time is not included about 3 sec 7 The water is stirred to equalize temperature throughout the vessel prior to measuring the final water temperature 8 Stirring devices and measuring instruments are selected in order to minimize addition or removal of heat P Where P is the microwave power output in watts Mw is the mass of the water in grams Mc is the mass of the container in grams TO is the ambient temperature in C is the initial temperature of the water in C T2 is the final temperature of the water in C t is the heating time in seconds excluding the magnetron filament heat up time WATER LOAD fa GLASS TRAY DISASSEMBLY INSTRUCTIONS IMPORTANT NOTES UNIT MUST BE DISCONNECTED FROM ELEC TR
15. amp 3 ohm meter scale Rx1 Normal Approximatelv 182 283 3 1 Kohm at 68 35 F Abnormal Infinite or several 7 17 COMPONENTS TOUCH KEV BOARD TEST Measure the resistance between terminal pins of KEV CONNECTOR NOTE When reconnecting the FPC connector make sure that the holes on the FPC connector are properlv engaged with hooks on the plastic fastener MATRIX CIRCUIT FOR TOUCH KEY BOARD RESULTS When When not Resistance touched touched value Less than than 400 ohms 1 mega ohm CONNECTOR KEY CON 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 A 4 A A A A A N C CUSTOM micro conv NC COMBI COOK 9 A EA VENT VENT LIGHT AUTO ON OFF j5 SPEED onore M fme ser SOFTEN MELT 10 d pe 4 d kl A A SENSOR SENSOR SENSOR AUTO ADD AUTO NC iib COOK REHEAT A DEFROST 130 SEC a A CUSTOM AUTO TURNTABLE KITCHEN CLOCK MORE LESS SET COOK ON OFF TIMER A A A 12 l qum A A POWER N C STOP ENTER 8 9 0 CLEAR START 13 AAA O AA A y FPC CONNECTOR Top NOTES e A MICROWAVE ENERGY TEST MUST ALWAYS PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON e MAKE SURE TH
16. do this continuitv test before operating the oven COMPONENTS TEST PROCEDURE RESULTS SWITCHES Check for continuitv of the Door Wire leads removed switch with an Ohm meter open Primarv o o Switch LA Monitor Switch pape Secondary Switch EN NOTE After checking for the continuity of switches make sure that they are connected correctly WARNING FOR CONTINUED PROTECTION AGAINST EXCESSIVE RADIATION EMISSION REPLACE ONLY WITH IDENTICAL REPLACEMENT PARTS TYPE NO SZM V16 FA 63 OR VP 533A OF OR V 5230Q FOR PRIMARY SWITCH TYPE NO SZM V16 FA 62 OR VP 532A OF OR V 5220Q FOR MONITOR SWITCH TYPE NO SZM V16 FA 63 OR VP 533A OF OR V 5230Q FOR SECONDARY SWITCH TEST AND CHECKOUT PRECEDURES AND TROUBLESHOOTING CAUTIONS 1 DISCONNECT THE POWER SUPPLV CORD FROM THE OUTLET WHENEVER REMOVING THE OUTER CASE FROM THE UNIT PROCEED WITH THE TEST ONLV AFTER DISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE LEAD WIRES FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER 2 ALL OPERATIONAL CHECKS WITH MICROWAVE ENERGY MUST BE DONE WITH A LOAD 1 LITER OF WATER IN CONTAINER IN THE OVEN A TEST PROCEDURES Remove wire leads Install the magnetron seal in the correct position Check that the seal is in good condition 2 Measure resistance ohm meter scale Rx1 e Filament terminal 3 Measure resistance ohm
17. 700W Microwave 950W IEC60705 Adjustable 95W through 950W 10 steps Convection 1500W 2450 MHz 50 MHz 120 VAC 60 Hz Microwave 13 5A Convection 14 0A Forced Air Cooling Rectification Voltage Double Half Wave Choke System Magnetron Thermostat Open at 150 C 5 C Close at 0 C 5 Oven Thermostat Open at 145 C 5 C Close at 0 5 Fuse 20A Primarv Interlock Switch Secondarv Interlock Switch Interlock Monitor Switch 130 V 35 W 130 V 35 W Digital up to 99 min 99 sec in each cooking stage Tempered Safetv Glass 2915 8 W x167Ae H x153 e D 211 4 W x97Ae H x143Ae D 1 7 Cu ft Use amp Care Guide Cooking Guide Installation Manual Exhaust Adapter Exhaust Damper Mounting Kit amp Two Filter Shaft Rotating Ring Glass Tray Grill Rack Metal Tray SWITCH CHART PRIMARY SECONDARY INTERLOCK SWITCH MODE INTERLOCK INTERLOCK MONITOR SWITCH SWITCH SWITCH COM COM COM CONDITIONS NO NO NC DOOR OPEN OPEN OPEN CLOSE DOOR CLOSED CLOSE CLOSE OPEN NOTE Use the above switch chart with circuit d iagram on page 5 1 1 1 CAUTIONS Unlike other appliances the microwave oven is high voltage and high current equipment Though it is free from danger in ordinary use extreme care should be taken during repair e DO NOT operate on a 2 wire extension cord during repair and use e NEVER TOUCH any oven components or wiring during operation
18. E WIRE LEADS ARE IN THE CORRECT POSITION WHEN REMOVING THE WIRE LEADS FROM THE PARTS BE SURE TO GRASP THE CONNECTOR NOT THE WIRES 7 18 B CHECKOUT PROCEDURES 1 CHECKOUT PROCEDURES FOR FUSE BLOWING CAUTION REPLACE BLOWN FUSE WITH 20 AMPERE FUSE PROBLEMS CAUSES Fuse blows immediatelv after the door is closed Improper operation of the primarv interlock secondarv Fuse blows immediatelv after interlock switches and or the interlock monitor switch the door is opened Fuse blows when the door is closed and Malfunction of the high voltage transformer the high START ENTER kev is touched voltage capacitor including the diode the magnetron the blower motor or the circuit board NOTES e If the fuse is blown by an improper switch operation replace all switches and the fuse at the same time After replacing the defective switches with new ones make sure that thev are correctiv connected Check for microwave energy leakage according to INTERLOCK ADJUSTMENT PROCEDURES on page 7 12 when the primarv interlock secondarv interlock switches and or the interlock monitor switches are adjusted or replaced 7 20 2 CHECKOUT PROCEDURES FOR RELAY PROBLEM A FAN motor turns on without touching START ENTER PROBLEM A Oven lamp turns on without touching START ENTER key when the door is closed pe key when the door is closed jo Remove the mate connector of
19. GREAT CARE The filament leads of magnetron carrv High Voltage with respect to ground Extreme caution must be exercised Never plug the unit into a power source to determine which component is defective in high voltage section B TO AVOID POSSIBLE EXPOSURE TO MICROWAVE ENERGY LEAKAGE THE FOLLOWING PRECAUTIONS MUST BE TAKEN BEFORE SERVICING 1 Before the power is applied a Make sure the primarv interlock switch the secondary interlock switch and the interlock monitor switch operate properlv bv opening and closing the door several bv opening and closing the door several times Make sure the perforated screen and the dielectric choke of the door are correctly and firmly mounted o a 2 After power is applied a Make sure the interlock switch mechanism is operating properly by opening and closing the door b Check microwave energy leakage must be below the limit of 5 mW cm All service adjustments should be made for minimum microwave energy leakage readings 7 1 3 Do not operate the unit until it is completely repaired if any of the following conditions exist The unit must not be operated a The door does not close firmly b The hinge is broken c The door seal is damaged d The door is bent or warped or there is any other visible damage on the unit that may cause microwave energy leakage NOTE Always keep the seal clean e Make sure that there are no defective parts in t
20. ICAL OUTLET WHEN MAKING REPAIRS RE PLACEMENTS ADJUSTMENTS AND CONTIN UITY CHECKS WAIT AT LEAST ONE MINUTE UNTIL THE HIGH VOLTAGE CAPACITOR IN THE HIGH VOLTAGE POWER SUPPLY HAS FULLY DISCHARGED THE CAPACITOR SHOULD BE DISCHARGED BY USING INSULATED WIRE TEST PROBE CONNECTED TO 10K OHM RESISTOR IN SERIES TO GROUND WHEN RECONNECTING THE WIRE LEADS TO ANY PART MAKE SURE THE WIRING CONNE CTIONS AND LEAD COLORS ARE CORRECTLY MATCHED ACCORDING TO THE OVERALL CIR CUIT DIAGRAM 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 panel with pushing it upward 3 Remove the five connectors CN1 CN2 CNA CN5 and wire leads Relay8 Relay10 from the circuit board Control Panel Circuit Board Power Transformer Figure 1 7 4 4 Remove 4 screws securing the circuit board Circuit Board Figure 2 5 Remove the FPC connector from the terminal socket following HOW TO REMOVE THE FPC CONNECTOR on the next page 6 Remove the circuit board from the control bracket carefully Control Bracket FPC Connector S1 Circuit Board Figure 3 HOW TO REMOVE THE F P C CONNECTOR Follow the steps below as illustrated in Figures 4 and 5 to remove the F P C connector 1 Hold the edge
21. IN READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY PRECAUTIONS ON INSTALLATION A Plug the power supplv cord into a 120V AC 6OHz single phase power source with a capacitv of at least 20 amperes B Avoid placing the unit in a location where there is direct heat or splashing water C Install the unit on the mounting plate firmiv D Place the unit as far awav as possible from TV radio etc to prevent interference GROUNDING INSTRUCTIONS For personal safetv this appliance must be fullv grounded 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 CAUTION This unit is equipped with a 3 prong plug for vour safety If the wall outlet is a grounded 3 hole type the unit will be grounded automaticallv Plug with Ground Prong Properlv Polarized and Grounded Outlet WARNING Improper use of the grounding plug can result in a risk of electric shock Do not under anv circumstances cut or remove the third ground prong from the power cord plug 3 1 OPERATING INSTRUCTIONS CONTROL PANEL O 000 G e OO 888809 MICRO CONV COMBI 4 Sensor Touch SENSOR SENSOR SENSOR POPCORN COOK REHEAT AUTO Mie DOTRC17B 9 MICRO CONV COMBI
22. QUENCE 7 When vou achieve the proper sequence of switches in Steps 5 and 6 tighten the latch board 5 Open the oven door slowly Watch the door latch screws at that point the Secondary Switch Release Rod and Lever on the switches to make sure they are zero to the TEST THE MICROWAVE ENERGY LEAKAGE body of the switches in the following sequence Make sure the microwave energy leakage is below the Primary Interlock Switch limit of 1mMW cm with a 275 ml water load and Secondary Interlock Switch 5mW cm with a 275 ml water load without the cabinet when measured with a survey meter Interlock Monitor Switch Adjust the latch board until the switches operate in this sequence See Steps 3 and 4 6 Close the oven door slowly and be sure it is tightly closed Watch the three switches to make sure they are zero 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 Primary and Secondary Interlock Switches If the Primary and Secondary Interlock Switches allow the oven to operate with the door open the Monitor Switch will blow the fuse INTERLOCK CONTINUITV TEST A PRIMARV INTERLOCK SWITCH TEST B SECONDARV INTERLOCK SWITCH TEST When the door is opened slowiv an audible click Disconnect the wire lead from the secondarv should be heard at the same time or successivelv switch
23. TE Address on CDRH Office of Compliance HFZ 312 Center for Devices and Radiological Health 1390 Piccard Drive Rockville Marvland 20850 e The service personnel should check all surface and vent openings for microwave emission testing e Check for microwave energv leakage after everv servicing The power densitv of the microwave radiation leakage emitted bv the microwave oven should not exceed 1mW cm sq And alwavs start measuring of an unknown field to assure safetv for operating personnel from radiation leakage NOTE The standard is 5mW cm sq while in the customer s home 1mW cm sq stated here is manufacturer s own voluntary standard for units in customer s home EQUIPMENT TESTER VOLTS DC AC Ohmmeter Microwave survey meter Holaday HI 1500 HI 1501 8100 8200 600 cc non conductive material beaker glass or plastic inside diameter approx 8 5 cm 31 2 in Glass thermometer 100 C or 212 F 1 deg scale MEASURING MICROWAVE ENERGY LEAKAGE Narda Pour 275 15cc of 20 5 C 68 9 F water in beaker which is graduated to 600 cc and place the beaker on the oven 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 bcm spacer supplied with the probe Operate the oven at its maximum output Measure the microwave radiat
24. W Dometic MICROWAVE OVEN SERVICE MANUAL MODEL DOTRC17B DOTRC17SS AUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL October 2005 Printed in Korea P NO 3828 556213 CAUTION WARNING TO SERVICE TECHNICIANS PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGV Do not operate or allow the oven to be operated with the door open Make the following safetv checks on all ovens to be serviced before activating the magnetron or other microwave source and make repairs as necessarv 1 Interlock operation 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 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 cavitv for proper alignment integritv and connections Any defective or misadjusted components in the interlock monitor door seal and microwave generation and transmission svstems shall be repaired replaced or adjusted bv procedures described in this manual before the oven is released to the owner A Microwave leakage check to verifv compliance with the Federal performance standard should be performed on each oven prior to release to the owner e Proper operation of the microwave
25. adjusting the Interlock Monitor Switch make sure that it is correctiv connected Mounting of the primarv monitor secondarv switches to the latch board Latch Board Y I Primary Interlock Switch Interlock Monitor Switch Secondary Interlock Switch Figure 23 a LATCH 0 1 64 Figure 23 b 0 1 64 LATCH BOARD CHECK THE DOOR LATCH AND SWITCH CLOSING NOTE The outer cover of the microwave oven is removed 1 Set the 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 Figure 23 b for close up view of gaps A and B door latches If all gaps are less than 1 64 0 5 mm adjustment of the latch board may not be necessary Go to Steps 5 and 6 to check the sequence of the switches NOTE If any gap is larger than 1 64 0 5 mm you will need to adjust the latch board Go to step 3 and follow all steps in order ADJUST THE LATCH AND SWITCH CLOSING 8 Loosen the two screws holding the plastic latch board as shown 4 With the oven door closed tightly move the latch board upward toward the top of the oven and or away from the door latch until the gaps are less than 1 64 0 5 mm Hold the latch board tightly in this position until you check the sequence of the switches in steps 5 and 6 TEST THE LATCH AND SWITCH SE
26. and one screw on the right central edge of Base plate Remove the Mount All from the outside case by removing one screw securing it to the outside case Remove six screws of the rear cavity Remove the outside case Mount All gt PA 1 ee Mounting Plate Out Case Vent Grille amp Controller 3 screws Figure 8 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 necessarv replacements and check microwave energy leakage according to ADJUSTMENT PROCEDURES on page 7 12 Latch Board Inte e Monitor Interlock Switch Figure 10 Figure 9 7 7 Latch Board Primary rlock Switch Monitor Interlock Switch Secondary Interlock Switch D REMOVING MAGNETRON NOTES Figures 11 Through 13b When removing the magnetron make sure that its 1 Remove the vent grille bv loosening two screws dome does not hit anv adjacent parts or it mav be Figure 11 damaged 2 Remove the outside case See page 7 6 3 Remove four tap tite screws securing the When replacing the magnetron be sure to install the magnetron to the wave guide magnetron gasket in the correct position and be sure 4 Disconnect the leadwire that the gasket is in good condition 5 Remove the magnetron VERV CAREFULLV After
27. and using them at the same time blown fuse or breaker _ gt Plug is not inserted tightiv Output power is too low Low AC input voltage Food temperature is too low REMEDY Avoid using other electrical appliances when you use this unit Insert plug securely Use the microwave oven at adequate line voltage This may not be a defect It is possible that the food should be cooked fora longer time period Sparks occur in oven Uneven microwave cooking Using metallic ware and allowing it to touch the oven wall Do not use metallic ware for cooking except where noted in the cooking guide Ceramic ware trimmed in gold or silver powder is used y Inconsistent intensity of microwave by their characteristics 7 23 Do not use any type of cookware with metallic trimming 1 Use plastic wrap or lid 2 Stir once or twice while cooking soup cocoa or milk etc TROUBLE 1 The following visual conditions indicate a probable defective control circuit 1 Incomplete segments Segment missing Partial segment missing Digit flickering NOTE Slight flickering is normal gt Colon does not turn on or blink A distinct change in the brightness of one or
28. at intervals and the latches should activate the Connect the ohmmeter leads to the common switches with an audible click COM and normally open NO terminals of the If the latches do not activate the switches when the switch The meter should indicate a open circuit in door is closed the switches should be a adjusted the door open condition When the door is closed in accordance with the adjustment procedure meter should indicate an closed circuit When the Disconnect the wire lead from the primarv switch secondarv switch operation is abnormal make the Connect the ohmmeter leads to the common necessarv adjustment or replace the switch onlv COM and normally open NO terminal of the with the same tvpe of switch switch The meter should indicate an open circuit in the door open condition C MONITOR SWITCH TEST When the door is closed the meter should indicate a closed circuit When the primarv switch operation is abnormal make the necessarv adjustment or replace the switch only with the same type of switch Disconnect the wire lead from the monitor switch Connect the ohmmeter leads to the common COM and normallv closed NC terminals of the switch The meter should indicate closed circuit in the door open condition When the door is closed meter should indicate an open circuit When the monitor switch operation is abnormal replace with the same tvpe of switch NOTE After repairing the door or the interlock system it is necessary to
29. ff KITCHEN TIMER Touch this pad to set the timer VENT ON OFF Touch this pad to turn the fan on off VENT 5 SPEED Touch this pad to choose one of 5 fan speeds VENT AUTO TIME SET Touch this pad when setting ventilation time 1 3 5 10 and 30 minutes OVERALL CIRCUIT DIAGRAM SCHEMATIC DIAGRAM 120 VAC 60Hz SINGLE PHASE MICRO COMPUTER BOARD OVEN THERMOSTAT OVEN LAMP 148 C 10 C MGT THERMOSTAT 150 C 10 C COOKTOP LAMP PRIMARY INTERLOCK ABSOLUTE HUMIDITY SENSOR MONITOR SWITCH MIDDLE 4 o E 2 x E 00000000000000 A H V TRANSFORMER NO DAMPER SECONDARV SWITCH SWITCH H V CAPACITOR Note Door is opened NOTE CONTROL MODULE OL d Lamp 1 DOOR IS OPEN BK BL__RD BR BL YL WHGN V M Ventilation Motor 2 WIRE COLORS FF 66 1 3 45 6 7 8 9 10 C L Cook Top Lamp D M Damper Motor F M Fan Motor BK BLACK T T M Turntable Mot RD mb 10 PIN CONNECTOR CN1 A S M Stirrer Motor BL GN PK WH RD BK C M Convection Motor 3PIN CN5 3PIN CN4 CONNECTOR CONNECTOR MATRIX CIRCUIT FOR TOUCH KEV BOARD KEV MATRIX N C A A CUSTOM COOK A CONV A N C A VENT ON OFF A VENT 5 SPEED A LIGHT ON OFF A VENT AUTO TIME SET A SOFTEN A SENSOR POPCORN Zi SENSOR COOK ZA SENSOR on AUTO aliu ADD 30 SEC A SPEED
30. he interlock mechanism f Make sure that there are no detective parts in the microwave generating and transmission assembly especially waveguide 4 The following items should be checked after the unit is repaired a The interlock monitor switch is connected correctly and firmly b The magnetron gasket is properly positioned and mounted c The waveguide and the oven cavity are intact no microwave energy leakage d The door can be properly closed and the safety switches work properly e The unit must stop when the door is opened or the time is up The unit must not be operated with any of the above components removed or by passed MICROWAVE LEAKAGE TEST CAUTIONS Be sure to check microwave leakage prior to servicing the oven if the oven is operative prior to servicing service personnel should inform the manufacture importer or assembler of any certified oven unit found to have a microwave emission level in excess of 5 mW cm and should repair any unit found to have excessive emission levels at no cost to the owner and should ascertain the cause of the excessive leakage The service personnel should instruct the owner not to use the unit until the oven has been brought into compliance e If the oven operates with the door open the service personnel should Tellthe user not to operate the oven Contact the manufacturer and CDRH Center for Devices and Radiological Health immediately NO
31. ion between tightly P C B assembly and headwire connector Temperature in Check the Relay Abnormal Defective Relay Replace the oven cavity is 10 of P C B 10 Relay 10 lower or higher assembly than preset L Normal gt Check the Abnormal gt Defective Replace convection heater convection heater convection heater element Normal Check the 3 Defective Replace circulation motor circulation motor circulation motor Normal Check the Error message Thermistor open Replace thermistor shows in the display or short thermistor Normal Check the Rack gt Cook on the _ Without _ Cook with glass tray metal rack metal rack 7 28 EXPLODED VIEW DOOR PARTS FOR MODEL DOTRC17B EV CONTROLLER PARTS FOR MODEL DOTRC17B FOR MODEL DOTRC17SS EV OVEN CAVITY PARTS LATCH BOARD PARTS EV INTERIOR PARTS I EV INTERIOR PARTS II Discord original for parts supplied Change pieces simultaneously 004 3 8 L EV INSTALLATION PARTS E x 2
32. ion using and electromagnetic radiation monitor by holding the probe perpendicular to the surface being measured Move probe along shaded area Probe scanning speed Less than 2 5 cm sec 1 in sec MEASUREMENT WITH THE OUTSIDE CASE REMOVED 1 When vou replace the magnetron measure for microwave energv leakage before the outer case is installed and after all necessarv components are replaced or adjusted Special care should be taken in measuring the following parts Around the magnetron The waveguide WARNING AVOID CONTACTING ANY HIGH VOLTAGE PARTS MEASUREMENT WITH A FULLY ASSEMBLED OVEN 1 After all components including the outer panels are fully assembled measure for microwave energy leakage around the door viewing window the exhaust opening and air inlet openings Microwave energy leakage must not exceed the values prescribed below NOTES Leakage with the outer panels removed less than 5 mW cm Leakage for a fully assembled oven Before the latch switch primary is interrupted with the door in a slightly opened position less than 1 mW cm POWER OUTPUT MEASUREMENT 1 Microwave power output measurement is made with the microwave oven supplied at its rated voltage and operated at its maximum microwave power setting with a load of 1000 5 g of potable water 2 The water is contained in a cylindrical borosilicate glass vessel having a maximum material thickness of 1 8
33. mary interlock switch the secondary interlock switch and the interlock monitor switch operate properly by opening and closing the door several times Touch the START ENTER key each time the door is closed Continue operating the unit Two short and a long beep sound signal is heard when the time is up The unit will shut off automatically Confirm the water is hot Finally measure the output power according to POWER OUTPUT MEASUREMENT on page 7 3 6 1 FEATURES AND SPECIFICATIONS FEATURES A The safety systems incorporated in this model are 1 Primary interlock switch 2 Secondary interlock switch 3 Interlock monitor switch 4 Choke system 5 Oven cavity thermostat Note This thermostat located on the oven cavity will open and stop the unit from operation only if a high temperature is reached such as a fire created by overcooking food 2 re wos 3 4 5 Any one of 10 power output levels ranging OW to 950W can be selected by the touch control and electronic computer system Cooking time can be displayed on the digital readout Three different cooking stages Include Defrost can be changes from one cooking stage to another This is made possible with the memory function of the microprocessor SERVICE INFORMATION PRECAUTIONS AND REPAIR SERVICE TIPS PRELIMINARV A SINCE NEARLY 4000 VOLTS EXISTS IN SOME CIRCUITS OF THIS UNIT REPAIRS SHOULD BE CARRIED OUT WITH
34. meter scale Rx1000 e Filament to chassis COMPONENTS TEST RESULTS TRANSFORMER FILAMENT ar WINDING NS WINDING PRIMARY WINDING 1 Remove wire leads 2 Measure resistance ohm meter scale Rx1 Primary winding Approx 0 3 to 0 5 ohms Secondary winding Approx 65 to 120 ohms Filament winding 0 ohm 3 Measure resistance ohm meter scale Rx1000 Primary winding to ground Normal Infinite Filament winding to ground Normal Infinite MAGNETRON Antenna Gasket Normal Less than 1 ohm Normal Infinite 7 15 COMPONENTS CAPACITOR m TEST 1 Remove wire leads 2 Measure resistance ohm meter scale Rx1000 Terminal to terminal Terminal to case RESULTS Normal OO Momently indicates x several ohm an d then gradually returns to infinite Normal Infinite OO AN DIODE Some inexpensive meters may indicate infinite resistance in both directions 1 Measure continuity Forward ohm meter scale Rx1000 2 Measure continuity Reverse ohm meter scale Rx1000 Normal Continuity Abnormal Infinite Normal Infinite o Abnormal Continuitv TAN RELAY 8 1 Measure continuity Power scu ohm meter scale Rx1 Level LA AN 2 Remove the lead wires and operate oven at 1 4 Sec 18 Sec power level 1 through power level 10 2 6 Sec 16 Sec 3 8 Sec 14 Sec 4 10 Sec 12 Sec 5 12 Sec 10
35. more numbers in display One or more digits in the display are not lighting Display indicates a number different from one touched for example key in 5 and 3 appears in the display Specific numbers for example 7 or 9 will not display when key pad is touched Display does not count down with time blinking or up with clock operation Display obviously jumps in time while counting down Display counts down too fast while cooking Each indicator light does not turn on after setting cooking cycle Display time of day does not reappear when cooking is finished CONDITION CHECK RESULT CAUSE REMEDY 1 No input can be Check the conn onini Defective PCB Replace PCB programmed ection between y assembly assembly membrane key assembly and Loose onnect them PCB assembiv No continuis connection tightly 2 Some inputs Replace key Everything works Defective key Replace key cannot be membrane as specified membrane membrane programmed assembly and assembly assembly check operation 3 Display shows a Defective Replace number or figure stil have trouble assembly assembly different from one touched 4 Random programming when touching other pads 5 Display is fixed at some figure and can not accept any input 7 24
36. ood by weight 11 CUSTOM COOK Touch this pad to recall one cooking instruction previously programmed into memory 12 ADD 30 SEC Touch this pad to set start quickly and microwave cooking at 100 power level 4 2 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 CUSTOM SET Touch this pad to change the oven s default settings for sound clock display speed and defrost weight NUMBER Touch number pads to enter cooking time power level quantities weights or cooking temperature TURNTABLE ON OFF Touch this pad to turn off the turntable OFF will appear in the display NOTE This option is not available in sensor cook and defrost modes POWER Touch this pad to select a cooking power level More Touch this pad to add ten seconds of cooking time each time you press it STOP CLEAR Touch this pad to stop the oven or to clear all entries START ENTER Touch this pad to start a function or enter all entries If you open the door after oven begins to cook touch START ENTER again Less Touch this pad to subtract ten seconds of cooking time each time you press it SOFTEN Touch this pad to soften Butter Ice Cream Cream Cheese or Frozen Juice MELT Touch this pad to melt Butter or Margarine Chocolate Cheese or Marshmallow CLOCK Touch this pad to enter the time of day LIGHT ON OFF Touch this pad to turn the cooktop countertop light on or o
37. ovens requires that the magnetron be assembled to the wave guide and cavitv Never operate the magnetron unless it is properly installed e Be sure that the magnetron gasket is properly installed around the dome of the tube whenever installing the magnetron e Routine service safetv procedures should be exercised at all times e Untrained personnel should not attempt service without a thorough review of the test procedures and safetv information contained in this manual FOREWORD Read this Manual carefully Failure to adhere to or observe the information in this Manual may result in exposing vourself to the Microwave Energv normallv contained within the oven cavitv TABLE OF CONTENTS Page SAFELY PREGAUTIONS ii ton Inside front page SPECIFIGATIONS a ja fa tert s D a REO D RR 1 1 CAUTIONS EE 2 1 INSTAEEATIONS 2 si risit meten to act etd a cun mns ois 3 1 OPERATING INSTRUCTIONS cuicos rie A EE AR ERE g TAREA ERR ERAS 4 1 A ace i e a ve ot A A a ee 4 1 CONTROL PANEL INSTRUGCTIONS HA 4 2 OVERALL CIRCUIT 2 012 000000000040000006 000000000003 99 5 1 SCHEMATIC DIAGRAM ii i ei aa RR REI UE 5 1 MATRIX CIRCUIT FOR TOUCH KEY 5 2 GENERAL INFORMATION FOR 9
38. power of power supply supply cord TROUBLE 3 Displav shows all figures set but oven does not start cooking while desired program times are set and START ENTER pad is touched CONDITION CHECK RESULT CAUSE REMEDV Defective Replace 1 Setting time does Check continuitv No continuity gt d itch gt d itch not count down of secondary secondary switch secondary switch when touching switch with START ENTER door closed gt Continuity pad gt Check the con No continuit Defective P C B Replace P C B nection between y assembly assembly CN1 connector and PCB Connection then gt assembly Continuity Loose connection gt tightly 2 Fan motor or Defective fan Replace fan je oven lamp Check fan motor Abnormal gt motor gt dn do not turn on Check oven lamp Abnormal Defective oven EN Replace oven lamp lamp Normal TROUBLE 4 Oven seems to be operation but little heat is produced in oven load CONDITION CHECK RESULT CAUSE REMEDY Output is low Check the Lower than 90 of Decreaseinpower Suggest customer power
39. replacing the magnetron check for microwave energv leakage with a survev meter Check microwave energv leakage must be below the limit of 5 mW cm All service adjustments should be made for minimum microwave energy leakage readings Mount All or 2 screws Mounting Plate Out Case Vent Grille Controller 8 3 screws Figure 12 Figure 13 a Figure 13 b 7 8 E REMOVING STIRRER FAN Figures 14 and 15 1 Remove two screws securing it to the oven upper plate bv using drive screw 2 Rotate slightiv and pull out the stirrer fan cover 3 Remove the stirrer fan Figure 14 Figure 15 F REMOVING DOOR Figure 16 1 Remove the vent grille bv removing two screws securing it to the outside case loosening 2 Lift up and remove the door NOTES After replacing the door be sure to check that the primarv interlock switch the secondarv interlock switch and the interlock monitor switch is in good operating normallv After replacing the door check for microwave energy leakage with a survev meter Microwave energv leakage must be below the limit of 5mW cm With a 275 ml water load Figure 18 G DISASSEMBLING DOOR Figure 17 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 plate with the screwdriver
40. s of the plastic fastener with thumb and forefinger Figure 4 2 Lift up the lever of the plastic fastener from the terminal socket by lightly pressing the lever end with forefinger Figure 5 3 Remove the F P C connector from the terminal socket Plastic fastener Connector Terminal socket Figure 4 Plastic fastener Connector Terminal socket Figure 5 HOW TO 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 the plastic fastener with thumb and forefinger of the other hand and push it slowly into the terminal socket Figure 6 NOTE When reconnecting the F P C connector make sure that the holes on the F P C connector are properly engaged with the hooks on the plastic fastener 3 Lock the level of the plastic fastener into the hook of the terminal socket securely by releasing the fingers Figure 7 Plastic fastener Connector Terminal socket Figure 6 Plastic fastener Terminal socket Figure 7 REMOVING THE OUTSIDE CASE Figure 8 Remove the vent grille by removing two screws securing it to the outside case Remove two screws securing it to the air duct Remove the mounting plate by turning the screws 1 or 2 screws securing it to the out case Remove two screws on the left central edge
41. source rating voltage source voltage contact local voltage with load electric power Normal utility co or qualified electrician Disconnect the wire leads from Abnormal Defective P C B Replace P C B x C C relay 8 and check assembly assembly on and off time with multitester Normal TI Measure the Abnormal Defective Replace output power magnetron magnetron 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 7 26 TROUBLE 5 No microwave oscillation even though oven lamp and fan motor run Displav operates properlv CONDITION CHECK RESULT CAUSE REMEDV No microwave Disconnect the pm Defective P C B Replace P C B apt gt No continuity oscillation wire leads from assembly assembly relay 8 and check continuity Mr of relay 8 Continuity Operate the unit Check high vol Defective high Replace high tage transformer Fe voltage voltage transformer transformer normal high vol SR RE Defective high Replace high tage capacitor voltage capacitor voltage capacitor normal Check high vol Defective high
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