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COPYRIGHT

VIKING RANGE CORPORATION

111 Front St., Greenwood, MS 38930

Tel: (888) 845-4641

Содержание VMOS201AR

Страница 1: ...RE TO EXCESSIVE MICROWAVE ENERGY 2 BEFORE SERVICING 2 WARNING TO SERVICE PERSONNEL 4 MICROWAVE MEASUREMENT PROCEDURE 5 FOREWORD AND WARNING 7 PRODUCT SPECIFICATIONS 8 GENERAL INFORMATION 8 OPERATION 10 TROUBLESHOOTING GUIDE 14 TEST PROCEDURE 15 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE 26 PICTORIAL DIAGRAM 32 PARTS LIST 33 PACKING AND ACCESSORIES 37 S11326MOS201 MICROWAVE OVEN MODELS SERVICE ...

Страница 2: ...k as per the Microwave Measure ment Procedure outlined in this service manual If microwave emissions level is in excess of the specified limit contact Viking Service immediately 1 888 845 4641 If the unit operates with the door open service person should 1 tell the user not to operate the oven and 2 contact VIKING plus the Department Of Health Canada and or the Food and Drug Administration s Cente...

Страница 3: ...3 Notes ...

Страница 4: ...citor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that the leads remain isolated from other components and oven chassis by using insulation tape 6 After that procedure reconnect the power supply cord When the testing is completed 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Reconnect...

Страница 5: ... Set the cooking control on Full Power Cooking Mode Close the door and select a cook cycle of several minutes If the water begins to boil before the survey is completed replace it with 275 ml of cool water C Leakage test with enclosure installed 1 Grasp the probe of the survey instrument and hold it perpendicular to the gap between the door and the body of the oven 2 Move the probe slowly not fast...

Страница 6: ...ity The water container shall be a low form of 600 ml 20 oz beaker with an inside diameter of approx 8 5 cm 3 1 2 in and made of an electrically nonconductive material such as glass or plastic The placing of this standard load in the oven is important not only to protect the oven but also to insure that any leakage is measured accurately 4 Set the cooking control on Full Power Cooking Mode 5 Close...

Страница 7: ...must be carried out only by trained service personnel DANGER Certain initial parts are intentionally not grounded and present a risk of electrical shock only during servicing Service person nel Do not contact the following parts while the appliance is energized HighVoltage Capacitor PowerTransformer Magnetron HighVolt age Rectifier Assembly High Voltage Harness If provided Vent Hood Fan assembly C...

Страница 8: ...les CFR Title 21 Chapter 1 Subchapter J and Canadian Standards Association Health CANADA SPECIFICATION GENERAL INFORMATION GROUNDING INSTRUCTIONS This oven is equipped with a three prong grounding plug It must be plugged into a wall receptacle that is properly installed and grounded in accordance with the National Electrical Code and local codes and ordinances In the event of an electrical short c...

Страница 9: ...r accidentally CAUTION DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THE ROUND GROUNDING PRONG FROM OVEN DIAGRAM 1 One touch door open button Push to open door 2 Door latches The oven will not operate unless the door is securely closed 3 Removable turntable support 4 Removable turntable The turntable will rotate clockwise or counterclockwise 5 Oven lamp It will light when oven is operating or door ...

Страница 10: ...ndary interlock relay are activated with the following results The circuits to the turntable motor the cooling fan motor and the high voltage components are de energized the oven lamp remains on and the digital read out displays the time still remaining in the cook cycle when the door was opened 7 The monitor switch electrically monitors the operation of the primary switch and primary and is mecha...

Страница 11: ...of the SENSOR pads NOTE The oven should not be operated on sensor immediately after plugging in the unit Wait two minutes before cooking on SENSOR 2 Thecoilofshut offrelay RY 1 isenergized theturntable motor are turned on but the power transformer is not turned on 3 After about 16 seconds the cook relay RY 2 is energized The power transformer is turned on microwaveenergyisproducedandfirststageisst...

Страница 12: ... H N NOIS E FILTE R UNIT N O COM DOOR S E NS ING S WITCH NOIS E S UP P R E S S ION C OIL LINE C R OS S C AP AC IT OR 0 22uF AC 250V 0 0033uF AC 125V 0 0033uF AC 125V LINE B Y P AS S C AP AC IT OR LINE B Y P AS S C AP AC IT OR N O COM COM OL 120V AC 60 Hz MONITOR S WITCH H V R E CTIFIE R MAGNE TR ON S E CONDAR Y S WITCH MONIT OR F US E C AV IT Y T E MP F US E MAG NE T R ON T E MP F US E A1 A2 COM N...

Страница 13: ...ION BEFORE REPLACING A BLOWN monitor FUSE TESTMONITORSWITCHANDPRIMA RY SWITCH FOR PROPER OPERATION RE FER TO CHAPTER TEST PROCEDURE NOTE monitor FUSE AND MONITOR SWITCH ARE REPLACED AS AN ASSEMBLY TURNTABLE MOTOR The turntable motor rotates the turntable located on the bottom of the oven cavity so that the foods on the turntable cook evenly during cooking The turntable may turn in either direction...

Страница 14: ...er troubleshooting is performed with the power supply cord disconnected It may in some cases be necessary to connect the power supply cord after the outer case has been removed in this event 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that t...

Страница 15: ...when STOP CLEAR key is touched Buzzer should sound and or time of day should appear in display Oven lamp does not light when door is opened Oven lamp does not go out when door is closed Oven lamp lights but fan motor and turntable motor do not operate Oven does not go into cook cycle when START pad is touched Oven seems to be operating but little or no heat is produced in oven load Food incomplete...

Страница 16: ...ERVED Power output of the magnetron can be measured by performing a water temperature rise test This test should only be used if above tests do not indicate a faulty magnetron and there is no defect in the following components or wiring silicon rectifier high voltage capacitor and power transformer This test will require a 16 ounce 453cc measuring cup and an accurate mercury thermometer or thermoc...

Страница 17: ... oven cavity especially the cooling fan and air guide 5 Reconnect all leads removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions MAGNETRON TEMPERATURE FUSE TEST 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge hig...

Страница 18: ...secondary interlock switch 5 Reconnect all leads removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions SECONDARY INTERLOCK SYSTEM TEST DOOR SENSING SWITCH 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high volta...

Страница 19: ...el assembly is divided into two units Con trol Unit and Key Unit and also the Control Unit is divided into two units LSI Unit and Power Unit and troubleshooting by unit replacement is described according to the symptoms indicated Before testing 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Disconnect the leads t...

Страница 20: ...duces no signal 2 3 Other possible problems caused by defective control unit a Buzzer does not sound or continues to sound b Clock does not operate properly c Cooking is not possible When testing is completed 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Reconnect all leads removed from components during testing...

Страница 21: ...y RY1 on the control unit with an A C voltmeter The meter should indicate 120 volts if not check oven circuit RY1 and RY2 Relay Test These relays are operated by D C voltage Check voltage at the relay coil with a D C voltmeter during the microwave cooking operation DC voltage indicated Defective relay DC voltage not indicated Check diode which is connected to the relay coil If diode is good contro...

Страница 22: ...00 milliliters measuring cup 3 Place the container on the center of tray in the oven cavity 4 Close the door 5 Touch the Timer Clock pad once the Power Level pad twice the Start pad once and the number one once Now the oven is in the sensor cooking condition and TEST SENSOR and COOK will appear in the display 6 The oven will operate for the first 16 seconds without generating microwave energy NOTE...

Страница 23: ...pproximately 25 seconds push plunger of select switch for more than 3 seconds This condition is same as judgement by AH sensor 9 4 After approximately 3 seconds the display shows xx xx which is remaining cooking time and the display count down If the above is not the case the control unit is probably defective If the above is proper the AH sensor is probably defective 10 Disconnect the power suppl...

Страница 24: ... INDICATION OF OHM METER Between N and H Open Circuit Between terminal N and GRY Short Circuit Between terminal H and RED Short Circuit If incorrect readings are obtained replace the noise filter 6 Reconnect all leads removed from components during testing 7 Re install the outer case cabinet 8 Reconnect the power supply cord after the outer case is installed 9 Run the oven and check all functions ...

Страница 25: ... resistance values in parallel with R107 R111 of IC2 Changing the resistance value results in that there is the same potential at both F 3 terminal of the absolute humiditysensorandAN0terminaloftheLSI Thevoltage of AN1 terminal will indicat about 16 seconds about 2 50 V This initial balancing is set up about 16 secondsaftertheunitisputintheSensorCookingmode As the sensor cooking proceeds the food ...

Страница 26: ... 1 Disconnect the power supply cord 2 Make sure that a definite click can be heard when the microwave oven door is unlatched Hold the door in a closed position with one hand then push the door open button with the other this causes the latch leads to rise it is then possible to hear a click as the door switches operate 3 Visuallycheckthedoorandcavityfaceplatefordamage dents cracks signs of arcing ...

Страница 27: ...of the power transformer from the high voltage capacitor 7 Remove one 1 screw holding capacitor holder with the high voltage rectifier to the base plate 8 Disconnect rectifier terminal from capacitor High voltage rectifier assembly is now free 9 Remove capacitor holder Capacitor is now free CAUTION WHEN REPLACING HIGH VOLTAGE REC TIFIER AND HIGH VOLTAGE CAPACITOR GROUND SIDE TERMINAL OF THE HIGH V...

Страница 28: ... of control panel frame 3 Stick the key unit firmly to the control panel frame by rubbing with soft cloth not to scratch LSI UNIT NOTE Handle the LSI unit carefully so that there is no excessive force applied to the ribbon connection LSI unit 2 Remove turntable and turntable support from oven cavity 3 Laytheovenonit sbackside Removetheturntablemotor cover by snipping off the material in four corne...

Страница 29: ...oth after installation Make sure that the axis of the shaft is not slanted 5 Install the fan motor to the the oven cavity back plate with the two 2 screws 6 Connect the wire leads to the fan motor referring to the pictorial diagram Side View Rear View 1 Disconnect the power supply cord and remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Disconnect wire lead...

Страница 30: ... pushing and pulling upper portion of door toward the oven face Then check lower portion of the latch Figure C 3 Latch Switch Adjustments hook pushing and pulling upper portion of door toward the oven face Both results play in the door should be less than 0 5mm 2 The door sensing switch primary switch and secondary switch interrupt the circuit before the door can be opened 3 Monitor switch contact...

Страница 31: ...d toward cavity face plate 4 Check for microwave leakage around door with an approved microwave survey meter Refer to Microwave Measurement Procedure Note The door on a microwave oven is designed to act as an electronic seal preventing the leakage of microwave energy from oven cavity during cook cycle This function does not require that door be air tight moisture condensation tight or light tight ...

Страница 32: ...ust be connected to the terminal with N mark on the power supply cord BLK WHT H N NOTE The grounding conductor of the power supply cord has been grounded by power supply cord fixing screw The screw must always be kept tight COM N O DOOR SENSING SWITCH PNK GRN GRN to Oven cavity GRN PNK GRN 2 1 CN B ORG BLK SECONDARY SWITCH COM NO YLW BLK BRN WHT WHT RED RED GRY WHT BLK To CN A CN B RY1 IC1 PRIMARY...

Страница 33: ...ARTS 3 1 CPWBFB140MRU0 Control unit 1 3 2 FPNLCB408MRK0A Control panel frame with key unit VMOS201SS 1 3 2 FPNLCB543MRK0B Control panel frame with key unit VMOS201WH 1 3 2 FPNLCB616MRK0A Control panel frame with key unit VMOS201PL 1 3 2 FPNLCB545MRK0B Control panel frame with key unit VMOS201BT 1 3 2 FPNLCB546MRK0B Control panel frame with key unit VMOS201SG 1 3 2 FPNLCB547MRK0B Control panel fram...

Страница 34: ...RK0A Door assembly VMOS201OG 1 5 1 CDORFB509MRK0A Door assembly VMOS201GM 1 5 1 CDORFB510MRK0A Door assembly VMOS201SA 1 5 2 LSTPPB021MRF0A Latch head 1 AE 5 3 MSPRTA046WRE0 Latch spring 1 AB 5 2 FDORFB075MRT0 Door panel 1 AX 5 3 GCOVHB028MRF0 Choke cover 1 MISCELLANEOUS 6 1 TCAUHB008MRR0 User caution label 1 AF 6 2 FW VZC288WREZ Main wire harness 1 AU 6 3 FROLPA117WRKZ Turntable support 1 AN 6 4 ...

Страница 35: ...1 1 11 4 10 7 2 7 2 1 12 1 9 7 3 7 6 7 6 1 8 7 4 7 4 4 2 7 4 1 10 7 9 4 4 7 1 4 1 1 1 1 2 2 2 2 2 2 2 2 2 7 5 7 5 7 5 6 5 4 5 1 13 7 5 7 7 7 5 7 5 7 5 7 7 4 3 1 7 1 7 1 6 1 7 7 1 6 12 6 6 6 13 7 10 1 6 1 4 1 3 7 8 4 12 4 13 4 14 4 15 4 16 6 4 5 1 2 3 6 4 5 1 2 3 A B C D E F G H A B C D E F G H ...

Страница 36: ... 4 5 1 2 3 6 4 5 1 2 3 A B C D E F G H A B C D E F G H DOOR PARTS MISCELLANEOUS CONTROL PANEL PARTS 5 1 5 3 5 2 5 4 Actual wire harness may be different from illustration 6 8 6 2 3 4 3 2 3 3 3 5 3 5 3 1 6 1 ...

Страница 37: ...CESSORIES Non replaceable items DOOR PROTECTION SHEET PLASTIC BAG PACKING CASE TOP PAD ASSEMBLY INTO THE OVEN CAVITY 6 4 TURNTABLE TRAY 6 3 TURNTABLE SUPPORT 6 7 VIKING CD BOTTOM PAD ASSEMBLY TRAY HOLDER 6 9 RECIPE CARD ...

Страница 38: ...38 NOTES ...

Страница 39: ...39 NOTES ...

Страница 40: ...stem or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher COPYRIGHT 2011 BY VIKING ALL RIGHTS RESERVED VIKING RANGE CORPORATION 111 Front St Greenwood MS 38930 Tel 888 845 4641 ...

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