Viking DMOC205SS User Manual

DMOC205SSVMOC205SSIn the interest of user-safety the oven should be restored to its original condition and only parts identical to those specifiedshou

8DMOC205SSVMOC205SSOPERATIONDESCRIPTION OF OPERATING SEQUENCEThe following is a description of component functionsduring oven operation.OFF CONDITIONC

9DMOC205SSVMOC205SSCONVECTION COOKING CONDITIONPREHEATING CONDITIONProgram desired convection temperature by touching theCONVECTION pad and the Temper

10DMOC205SSVMOC205SSThe sensor “senses” the vapor and its resistance increasesgradually. When the resistance reaches the value setaccording to the men

11DMOC205SSVMOC205SSFigure O-2. Oven Schematic-Microwave Cooking ConditionIMPORTANT:During sensor cooking operation, the fire sensing op-eration seque

12DMOC205SSVMOC205SSSCHEMATICNOTE: CONDITION OF OVEN1. DOOR CLOSED.2. CONVECTION PAD TOUCHED.3. DESIRED TEMP. TOUCHED.4. COOKING TIME PROGRAMMED.5. “S

13DMOC205SSVMOC205SSTHIRD DOOR SWITCHThe switch is activated by the latch heads, while the dooris closed. When the door is opened, the switch interrup

14DMOC205SSVMOC205SSTROUBLESHOOTING GUIDEWhen troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the

15DMOC205SSVMOC205SSA MAGNETRONB POWER TRANSFORMERC H.V. RECTIFIER ASSEMBLYD HIGH VOLTAGE CAPACITORE PRIMARY INTERLOCK SWITCHF SECONDARY INTERLOCK SYS

16DMOC205SSVMOC205SSTEST PROCEDURESPROCEDURELETTERCOMPONENT TESTHIGH VOLTAGES ARE PRESENT DURING THE COOK CYCLE, SO EXTREME CAUTION SHOULDBE OBSERVED.

17DMOC205SSVMOC205SSIf the capacitor is open, no high voltage will be available to the magnetron. Disconnect input leads andcheck for short or open be

DMOC205SSVMOC205SSPRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLEEXPOSURE TO EXCESSIVE MICROWAVE ENERGY(a) Do not operate or a

18DMOC205SSVMOC205SSDisconnect connector-E from the control unit. Measure the resistance of the thermistor with anohmmeter. Connect the ohmmeter leads

19DMOC205SSVMOC205SSP TOUCH CONTROL PANEL ASSEMBLY TESTThe touch control panel consists of circuits including semiconductors such as LSI, ICs, etc. Th

20DMOC205SSVMOC205SSS COMPU DEFROST TEST(1) Place one cup of water in the center of the turntable tray in the oven cavity.(2) Close the door, touch th

21DMOC205SSVMOC205SSU AH SENSOR TESTChecking the initial sensor cooking condition(1) The oven should be plugged in at least two minutes before sensor

22DMOC205SSVMOC205SSPlungerNCNOCOMCOMNONCR3 R4R1R2123F-1F-2F-3To connector (F)on Control Unit.CONNECTORTEST PROCEDURESPROCEDURELETTERCOMPONENT TESTWhe

23DMOC205SSVMOC205SSTOUCH CONTROL PANEL ASSEMBLYOUTLINE OF TOUCH CONTROL PANELThe touch control section consists of the following unitsas shown in the

24DMOC205SSVMOC205SSPin No. Signal I/O Description5 AN7 IN Used for initial balancing of the bridge circuit (absolute humidity sensor). This inputis a

25DMOC205SSVMOC205SSPin No. Signal I/O Description18 P50 OUT Damper motor relay driving signal.To turn on and off shut-off relay(RY4).19 P47 OUT Heati

26DMOC205SSVMOC205SSPin No. Signal I/O Description37 P23 OUT Segment data signals.The relation between signals and indicators are as follows:Signal Se

27DMOC205SSVMOC205SS(1) Structure of Absolute Humidity SensorThe absolute humidity sensor includes two thermistorsas shown in the illustration. One th

1DMOC205SSVMOC205SSNotes

28DMOC205SSVMOC205SSSERVICINGTransistor2SB910MTransistorDTA123ESKRA101MKRA223MKRC243M1. Precautions for Handling Electronic ComponentsThis unit uses C

29DMOC205SSVMOC205SSCOMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURECAUTION: DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE.DISCHARGE HIGH

30DMOC205SSVMOC205SSPOSITIVE LOCK® CONNECTOR (NO-CASE TYPE) REMOVALPush the lever of positive lock® connector. Pull down on thepositive lock® connect

31DMOC205SSVMOC205SSFAN MOTOR REMOVALHEATER UNIT ASSEMBLY REMOVAL(HEATING ELEMENT/CONVECTION FAN/CONVECTION MOTOR/THERMISTOR)THERMISTOR REMOVAL1. Disc

32DMOC205SSVMOC205SSCONTROL PANEL ASSEMBLY AND CONTROL UNIT REMOVALTo remove the control panel, procedure as follows:1. Disconnect oven from power sup

33DMOC205SSVMOC205SSDOOR REPLACEMENT AND ADJUSTMENTREMOVAL1. Disconnect oven from power supply and remove theouter case.Remove turntable tray and turn

34DMOC205SSVMOC205SS7. Make sure the door is parallel with oven face lines (leftand upper side lines) and door latch heads pass throughlatch holes cor

35DMOC205SSVMOC205SSMICROWAVE MEASUREMENT PROCEDURELeakage test:Leakage Test with Enclosure Installed.1. Grasp the probe of the survey instrument and

36DMOC205SSVMOC205SSFigure S-1. Pictorial Diagram645123645123ABCDEFGHABCDEFGHTURNTABLE MOTORGRYBRNORGGRNPNKBLKDAMPER MOTORCOOLINGFAN MOTORPNKREDCONV.

37DMOC205SSVMOC205SSFigure S-2. Control Panel Circuit645123645123ABCDEFGHABCDEFGH+–+–+–+–+–+–A 9A 7A 1A 3A 5E 1 E 2 E 5 E 6 E 3 E 4 F 1 F 2 F 3N ON ON

2DMOC205SSVMOC205SSWARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of pro-ducing very high voltage and current, contact withfoll

38DMOC205SSVMOC205SS645123645123ABCDEFGHABCDEFGHFigure S-3. Printed Wiring BoardRR0 121311111165432111357 945 7 83314581212123233 64346913CONVHEATERCO

39DMOC205SSVMOC205SSPARTS LIST•Refer to "IMPORTANT" described at end of parts list.REF. NO. PART NO. DESCRIPTION Q'TYELECTRICAL PARTS1-

40DMOC205SSVMOC205SSREF. NO. PART NO. DESCRIPTION Q'TY CODE4-16 FDUC-A323WRW0 Steam duct assembly 1 AY4-17 MCAMPA030WRF0 Damper cam 1 AC4-18 NSFT

41DMOC205SSVMOC205SSREF. NO. PART NO. DESCRIPTION Q'TY CODE7-11 XBTWW40P06000 Screw; 4mm x 6mm 7 AA7-12 XCTSD40P08000 Screw; 4mm x 8mm 7 AA7-13

42DMOC205SSVMOC205SSOVEN AND CABINET PARTS645123645123ABCDEFGHABCDEFGH1-101-117-242-17-241-82-67-127-16A7-47-241-197-244-327-194-334-414-157-261-147-1

43DMOC205SSVMOC205SS645123645123ABCDEFGHABCDEFGHCONTROL PANEL PARTS5-25-95-155-85-45-85-85-85-55-35-75-65-10VMOC205SSDMOC205SS5-117-247-243-53-43-73-3

44DMOC205SSVMOC205SSPACKING AND ACCESSORIES645123645123ABCDEFGHABCDEFGH4-3 TURNTABLE TRAY6-9 OPERATION MANUAL 4-2 TURNTABLE SUPPORTTRAY PACKING

45DMOC205SSVMOC205SSNOTES:

46DMOC205SSVMOC205SSNo part of this publication may be reproduced,stored in a retrieval system, or transmitted inany form or by any means, electronic,

3DMOC205SSVMOC205SSMICROWAVE MEASUREMENT PROCEDURE (CANADA)After adjustment of the door switches are completed individually or collectively, switch te

4DMOC205SSVMOC205SSMICROWAVE MEASUREMENT PROCEDURE (USA)A. Requirements:1) Microwave leakage limit (Power density limit): The power density of microwa

5DMOC205SSVMOC205SSVIKING RANGE CORPORATION111 Front St., Greenwood, MS 38930Tel: (888) 845-4641SERVICE MANUALVIKING RANGE CORPORATIONMICROWAVE OVENSF

6DMOC205SSVMOC205SSSPECIFICATIONITEM DESCRIPTIONPower Requirements 120 Volts13.0 Amperes (Microwave) / 13.0 Amperes (Convection)60 Hertz / Single pha

7DMOC205SSVMOC205SSElectrical RequirementsThe electrical requirements are a 115 -120 volt 60 Hz, AC only,15 or more amp. fused electrical supply. It i