Viking service manual Viking Range Corporation, Microwave Ovens DMOC205SS VMOC205SS Foreword

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SERVICE MANUAL

VIKING RANGE CORPORATION

MICROWAVE OVENS

DMOC205SS

VMOC205SS

FOREWORD

This Manual has been prepared to provide Viking Service Personnel with Operation and Service Information for the Viking Microwave Ovens, DMOC205SS, VMOC205SS.

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

Certain initial parts are intentionally not grounded and present a risk of electrical shock only during servicing. Service personnel

-Do not contact the following parts while the appliance is energized; High Voltage Capacitor, Power Transformer, Magnetron, High Voltage 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

DMOC205SS

VMOC205SS

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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Image 7 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