Viking DMOC205SS Test Procedures Letter Component Test, Secondary Interlock System Test

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MONITOR SWITCH

DMOC205SS

VMOC205SS

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT TEST

If the capacitor is open, no high voltage will be available to the magnetron. Disconnect input leads and check for short or open between the terminals using an ohmmeter.

Checking with a high ohm scale, if the high voltage capacitor is normal, the meter will indicate continuity for a short time and should indicate approximately 10 MΩ once the capacitor is charged. If the above is not the case, check the capacitor with an ohmmeter to see if it is shorted between either of the terminals and case. If it is shorted, replace the capacitor.

EPRIMARY INTERLOCK SWITCH AND THIRD DOOR SWITCH TEST

Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal of the switch. The meter should indicated an open circuit with the door open and a closed circuit with the door closed. If improper operation is indicated, replace the switch.

FSECONDARY INTERLOCK SYSTEM TEST

DOOR SENSING SWITCH

Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal of the switch. The meter should indicated an open circuit with the door open and a closed circuit with the door closed. If improper operation is indicated, replace the door sensing switch.

SECONDARY INTERLOCK RELAY

Disconnect two (2) wire leads from the tab terminal of the secondary interlock relay (RY2). Check the state of the relay contacts using a ohmmeter. The relay contacts should be open. If the relay contacts are closed, replace the circuit board entirely or the relay itself.

GMONITOR SWITCH

Disconnect the oven from power supply.

Before performing this test, make sure that the primary interlock switch and the secondary interlock relay are operating properly, according to the above Test Procedures. Disconnect the wire lead from the monitor switch (NC) terminal. Check the monitor switch operation by using the ohmmeter as follows. When the door is open, the meter should indicate a closed circuit. When the monitor switch actuator is pushed by a screw driver through the lower latch hole on the front plate of the oven cavity with the door opened (in this condition the plunger of the monitor switch is pushed in), the meter should indicate an open circuit. If improper operation is indicated, the switch may be defective. After testing the monitor

switch, re-connect the wire lead to the monitor

switch (NC) terminal and check for continuity ofN.C. monitor circuit.

COM.

SCREW DRIVER

PRIMARY

INTERLOCKOHMMETER

SWITCH

HBLOWN MONITOR FUSE

If the monitor fuse is blown when the door is opened, check the primary interlock switch, door sensing switch relay (RY1) and monitor switch according to the "TEST PROCEDURE" for those switches before replacing the blown monitor fuse.

CAUTION: IF THE MONITOR FUSE IS BLOWN BY IMPROPER SWITCH OPERATION, THE MONITOR FUSE AND SWITCH MUST BE REPLACED WITH "MONITOR FUSE AND SWITCH ASSEMBLY" PART NUMBER FFS-BA012WRK0, EVEN IF THE MONITOR SWITCH OPERATES NORMALLY. THE MONITOR FUSE AND SWITCH ASSEMBLY IS PACKED WITH 20 AMPERE FUSE AND SWITCH.

IOVEN THERMAL CUT-OUT (on the side of steam duct)

A continuity check across the thermal cut-out terminals should indicate a closed circuit unless the temperature of the oven thermal cut-out reaches approximately 302οF (150οC). The thermal cut-out reset automatically at approximately 266οF (130οC). If the thermal cut-out has operated under the normal condition, replace the thermal cut-out. An open thermal cut-out indicates overheating of the oven cavity.

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Contents Models DMOC205SS VMOC205SS Table of ContentsBefore Servicing DMOC205SS VMOC205SS 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 DMOC205SS VMOC205SS Foreword Description SpecificationHigh MIX. Roast VMOC205SS Oven DiagramOFF Condition Power Level P-0 to P-90 CookingOperation Description of Operating SequencePreheating Condition Convection Cooking ConditionAutomatic MIX Cooking Condition Sensor Cooking ConditionCooking Sequence Fire Sensing Feature Microwave ModeCompu Defrost Cooking Compu BROIL/ Compu ROAST/ Compu BakeFigure O-1. Oven Schematic-OFF Condition Schematic DiagramFigure O-3. Oven Schematic-Automatic Mix Cooking Condition Description and Function of Components Damper Operation Troubleshooting GuideDamper OPEN-CLOSE Mechanism Microwave CookingProblem Test ProcedureHigh Voltage Rectifier Test Power Transformer TestHigh Voltage Capacitor Test Secondary Interlock System Test Test Procedures Letter Component TestPrimary Interlock Switch and Third Door Switch Test Monitor SwitchThermistor Test Damper Switch TestChecking Temperature in the Convection Mode Heating Element TestNoise Filter Test Touch Control Panel Assembly TestCompu Defrost Test Test Procedures Letter Component Test KEY Unit TestWeight 1ST Stage 2ND Stage 3RD Stage 4TH Stage Level Time Relay TestWater load cooking test Steps Occurrence Cause or CorrectionAH Sensor Test Checking the initial sensor cooking conditionChecking Control Unit Testing Method for AH Sensor AND/OR Control UnitLSIIXA103DR Touch Control Panel AssemblyDescription of LSI ThermistorCooling fan motor driving signal Temperature measurement input Oven ThermistorDigit selection signal Convection motor driving signalTOR Segment data signal Segment data signalsKey strobe signal Structure of Absolute Humidity Sensor Absolute Humidity Sensor CircuitServicing Magnetron Removal Component Replacement and Adjustment ProcedurePower Transformer Removal Outer Case RemovalHigh Voltage Capacitor Removal High Voltage Rectifier Assembly RemovalPositive Lock Connector NO-CASE Type Removal Damper Assembly RemovalHeating Element Removal Oven Lamp and Lamp Socket RemovalFAN Motor Removal Thermistor RemovalControl Panel Assembly and Control Unit Removal Power Supply Cord ReplacementControl Unit and KEY Unit Removal Door Replacement and AdjustmentAdjustment After adjustment, check the followingDoor Adjustment Door DisassemblyAfter adjustment, make sure of the following Requirement Microwave Measurement ProcedurePreparation For Testing Leakage test Leakage Test with Enclosure InstalledFigure S-1. Pictorial Diagram SFigureControl Panel DIP Control Panel Parts Parts ListElectrical Parts Cabinet PartsMiscellaneous Door PartsScrews Nuts and Washers LX-NZ0029YBE0 Oven and Cabinet Parts Control Panel Parts Door Parts Packing and Accessories DMOC205SS VMOC205SS Copyright 2004 by Viking

VMOC205SS, DMOC205SS specifications

The Viking DMOC205SS and VMOC205SS are two state-of-the-art microwave ovens that redefine cooking convenience and efficiency. Designed for modern kitchens, these appliances come equipped with a range of features and technologies that enhance their usability and performance.

One of the most notable aspects of the Viking DMOC205SS and VMOC205SS is their powerful cooking capabilities. Both models utilize an advanced cooking system that ensures even heat distribution, resulting in perfectly cooked meals every time. With a robust wattage of up to 1,200 watts, these microwaves can quickly and efficiently prepare a wide variety of dishes.

The DMOC205SS features a spacious interior, offering 2.1 cubic feet of cooking space, making it ideal for larger families or those who frequently entertain guests. The VMOC205SS variant also shares a similar capacity but comes with additional features tailored for versatility. The interior design of both models includes a stainless steel finish that not only enhances durability but also adds a touch of elegance to any kitchen.

Functionality is at the forefront of the Viking DMOC205SS and VMOC205SS. Both models are equipped with multiple cooking modes, including microwave, convection, and grilling options. This multi-functional capability allows users to seamlessly switch between cooking methods, ensuring optimal results for various recipes. The intuitive control panel features easy-to-read buttons and a digital display, making it user-friendly for all cooking levels.

In terms of technology, these Viking microwaves incorporate sensor cooking, which automatically detects the moisture and temperature of food, adjusting cooking times accordingly. This feature not only prevents overcooking but also ensures consistently delicious results. The models also come with pre-programmed cooking settings for popular dishes, making meal preparation simpler and quicker.

Energy efficiency is another critical aspect of the Viking DMOC205SS and VMOC205SS. Both models are designed to minimize energy consumption while maximizing performance, which is beneficial for both the environment and the homeowner’s energy bills.

Safety features are embedded within the design of these microwaves. They include a child lock function to prevent accidental use, as well as a timer that ensures food is cooked for the precise amount of time needed.

In summary, the Viking DMOC205SS and VMOC205SS are exceptional microwave ovens that combine advanced technology, practical features, and stylish design. Their powerful cooking capabilities, user-friendly controls, and energy-efficient operation make them a perfect addition to any modern kitchen. These appliances empower users to explore a wide range of cooking possibilities, bringing convenience and quality to meal preparation.
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