Viking Comprehensive Service Manual for Microwaves - DMOS200 and VMOS200

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SERVICE MANUAL

VIKING RANGE CORPORATION

MICROWAVE OVENS

DMOS200

CDMOS200

VMOS200

CVMOS200

FOREWORD

This Manual has been prepared to provide Viking Service Personnel with OperationandServiceInformationfortheVikingMicrowaveOvens,DMOS200, CDMOS200, VMOS200, CVMOS200 .

It is recommended that service personnel carefully study the entire text of this manual so that they will be qualified to render satisfactory customer service.

Check the interlock switches and the door seal carefully. Special attention should be given to avoid electrical shock and microwave radiation hazard.

WARNING

Never operate the oven until the following points are ensured:

(A)The door is tightly closed.

(B)The door brackets and hinges are not defective.

(C)The door packing is not damaged.

(D)The door is not deformed or warped.

(E)There is no other visible damage with the oven.

Servicing and repair work must be carried out only by trained service personnel.

DANGER

Certaininitialpartsareintentionallynotgroundedandpresentariskof electrical shock only during servicing. Service personnel - Do not contact the following parts while the appliance is energized;

HighVoltageCapacitor,PowerTransformer,Magnetron,HighVoltage Rectifier Assembly, High Voltage Harness;

If provided, Vent Hood, Fan assembly, Cooling Fan Motor.

All the parts marked “*” on parts list are used at voltages more than 250V.

Removal of the outer wrap gives access to voltage above 250V.

All the parts marked “” on parts list may cause undue microwave exposure, by themselves, or when they are damaged, loosened or removed.

VIKING RANGE CORPORATION

111 Front St., Greenwood, MS 38930

Tel: (888) 845-4641

CDMOS200

DMOS200

VMOS200

CVMOS200

PRODUCT DESCRIPTION

GENERAL INFORMATION

OPERATION

TROUBLESHOOTING GUIDE AND TEST PROCEDURE

TOUCH CONTROL PANEL

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

WIRING DIAGRAM

PARTS LIST

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Contents Models CDMOS200 VMOS200 Table of ContentsBefore Servicing CDMOS200 VMOS200 CVMOS200 Before Servicing When the testing is completedLeakage test without enclosure Microwave Measurement Procedure CanadaLeakage test with enclosure installed RequirementsLeakage test Microwave Measurement Procedure USAViking Range Corporation If provided, Vent Hood, Fan assembly, Cooling Fan MotorMicrowave Ovens DMOS200 CDMOS200 VMOS200 CVMOS200 Foreword Grounding Instructions SpecificationGeneral Information DescriptionMove the Round Grounding Prong from this Plug Oven DiagramVMOS200 model shown OFF Condition Power Level P-0 to P-90 CookingOperation Description of Operating SequenceCooking Sequence Sensor Cooking ConditionImar Y IT C H C O Ndar Y S W IT C H Schematic Door Closed Clock Appears on DisplayDescription and Function of Components Troubleshooting Guide Procedure Letter Component Test Magnetron Assembly Test Test ProceduresTest Procedure ProblemMicrowave Output Power Procedure Letter Component TestPower Transformer Test High Voltage Capacitor Test Procedure Letter Component Test High Voltage Rectifier TestCavity Temperature Fuse Test Magnetron Temperature Fuse TestSecondary Interlock Relay RY2 Door Sensing SwitchMonitor Switch Test Secondary Interlock System TestBefore testing Touch Control Panel Assembly TestBlown Monitor Fuse Test KEY Unit Test Test ProceduresRelay Test Weight 1ST Stage 2ND Stage Level TimeCompu Defrost Test Steps Occurrence Cause or Correction Occurrence Cause or CorrectionWater load cooking test Testing Method for AH Sensor and /OR Control UnitAH Sensor Test Checking the initial sensor cooking conditionProcedure Letter Component Test Checking Control Unit Measuring Point Indication of OHM-METER Procedure Letter Component Test Noise Filter TestTouch Control Panel Assembly LSIIXA098DR Signal similar to P17 Signal synchronized with commercial power source frequencyKey strobe signal Signal coming from touch keyAH sensor input Power source voltage GND0VInternal clock oscillation frequency control input setting Pin NoCOM7 OUT Segment data signalCommon data signal COM10 SEGStructure of Absolute Humidity Sensor Absolute Humidity Sensor CircuitTouch Control Panel Servicing Other PrecautionsServicing Tools Outer Case Removal Component Replacement and Adjustment ProcedureMagnetron Removal Power Transformer RemovalRe-install High Voltage Rectifier and High Voltage Capacitor RemovalTurntable Motor Removal Positive Lock Connector NO-CASE Type RemovalControl Panel Assembly Removal Oven Lamp and Lamp Socket RemovalRemoval AH Sensor ReplacementRE-INSTALL Cooling FAN Motor RemovalAfter adjustment, check the following Door ReplacementInstallation After any service, make sure of the followingSealer Film HIG H Voltag E C Ompone DiagramFigure S-2 Power Unit Circuit Figure S-3 CPUUnit CircuitFigure S-5 Printed Wiring Board of Power Unit Control Panel Parts Parts ListElectric Parts Cabinet PartsMiscellaneous Door PartsSCREWS,NUTS and Washers Oven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous Packing and Accessories Copyright 2002 by Viking
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CVMOS200, CDMOS200, DMOS200, VMOS200 specifications

The Viking VMOS200, DMOS200, CDMOS200, and CVMOS200 are advanced products designed for telecommunications and power management applications. Each model showcases unique features and technologies that make them stand out in their respective fields.

The VMOS200 is built on the vertical MOSFET technology, allowing for optimized performance in high-power applications. This device excels in switching capabilities and minimizing conduction losses, leading to improved efficiency. The VMOS200 is ideal for use in power amplifiers and high-frequency applications, where reliable performance and thermal stability are crucial. Its rugged design ensures that it can withstand harsh environments, making it a preferred choice for industrial and aerospace applications.

Next, the DMOS200 employs a double-diffused MOSFET technology, which enhances its thermal performance and power handling capabilities. This model is particularly effective in low-voltage applications where efficiency is paramount. The DMOS200 features a low on-resistance characteristic, allowing for reduced energy loss during operation. Its fast switching speed enables high-frequency operation, making it suitable for RF amplifiers and motor drives.

The CDMOS200 introduces a charge-balanced design, optimizing the allocation of charge carriers within the device to minimize heat generation and improve efficiency. This model is tailored for demanding applications in communications where signal integrity and power efficiency are critical. With its high breakdown voltage and robust construction, the CDMOS200 can handle more demanding operational conditions, making it popular in cellular and satellite communication systems.

Lastly, the CVMOS200 combines the advantages of vertical and charge-balanced technologies, offering a versatile solution for a broad range of applications. This hybrid design provides high efficiency, exceptional reliability, and enhanced thermal management. The CVMOS200 is particularly well-suited for switching power supplies and audio amplification. Its compact footprint allows for integration into space-constrained designs while maintaining high performance.

In summary, the Viking series of devices—VMOS200, DMOS200, CDMOS200, and CVMOS200—offer a range of features, technologies, and characteristics tailored to meet the demands of modern power electronics and telecommunications. With their robust designs, high efficiency, and adaptability to various applications, these devices are integral components for engineers and designers looking to create cutting-edge technological solutions.