Viking DMOC205SS - Manuals - manualsarea.com

Page 2 - on each oven prior to release to the owner.; BEFORE SERVICING; HIGH VOLTAGE

DMOC205SSVMOC205SS PRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLEEXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open.(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or ...

Page 3 - Notes

Page 4 - WARNING TO SERVICE PERSONNEL; may result in a severe, possibly; When the testing is completed,; After repairing; Before Servicing

2 DMOC205SSVMOC205SS WARNING TO SERVICE PERSONNEL Microwave ovens contain circuitry capable of pro-ducing very high voltage and current, contact withfollowing parts may result in a severe, possibly fatal, electrical shock. (Example) High Voltage Capacitor, High Voltage PowerTransformer, Magnetron, H...

Page 7 - SERVICE MANUAL; VIKING RANGE CORPORATION; DANGER; Removal of the outer wrap gives access to voltage above 250V.

5 DMOC205SSVMOC205SS VIKING RANGE CORPORATION 111 Front St., Greenwood, MS 38930 Tel: (888) 845-4641 SERVICE MANUAL VIKING RANGE CORPORATION MICROWAVE OVENS FOREWORD This Manual has been prepared to provide Viking Service Personnel withOperation and Service Information for the Viking Microwave Ovens...

Page 8 - SPECIFICATION; ITEM; GENERAL INFORMATION; GROUNDING INSTRUCTIONS

6 DMOC205SSVMOC205SS SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts 13.0 Amperes (Microwave) / 13.0 Amperes (Convection) 60 Hertz / Single phase, 3 wire grounded Power Output 900 watts (IEC 705 Test Procedure)Operating frequency of 2450MHz Convection Power Output 1450 Watts Case Dimensi...

Page 9 - OVEN DIAGRAM; TOUCH CONTROL PANEL

7 DMOC205SSVMOC205SS Electrical RequirementsThe electrical requirements are a 115 -120 volt 60 Hz, AC only,15 or more amp. fused electrical supply. It is recommended that aseparate circuit serving only this appliance be provided. When installingthis appliance, observe all applicable codes and ordina...

Page 10 - OPERATION; DESCRIPTION OF OPERATING SEQUENCE; OFF CONDITION

8 DMOC205SSVMOC205SS OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functionsduring oven operation. OFF CONDITION Closing the door activates the door sensing switch andsecondary interlock switch. (In this condition, the monitorswitch contacts are opened.)When...

Page 11 - PREHEATING CONDITION; CONVECTION COOKING CONDITION

9 DMOC205SSVMOC205SS CONVECTION COOKING CONDITION PREHEATING CONDITION Program desired convection temperature by touching theCONVECTION pad and the Temperature pad.When the START pad is touched, the following operationsoccur:1. The coil of shut-off relays (RY1, RY3,RY5 and RY6) are energized, the ov...

Page 12 - COMPU DEFROST COOKING; Operation

10 DMOC205SSVMOC205SS The sensor “senses” the vapor and its resistance increasesgradually. When the resistance reaches the value setaccording to the menu, supplementary cooking is started.The time of supplementary cooking is determined by experi-ment with each food category and inputted into the LSI...

Page 13 - SCHEMATIC DIAGRAM

11 DMOC205SSVMOC205SS Figure O-2. Oven Schematic-Microwave Cooking Condition IMPORTANT:During sensor cooking operation, the fire sensing op-eration sequence will not begin until the AH sensor has SCHEMATIC NOTE: CONDITION OF OVEN1. DOOR CLOSED. 2. COOKING TIME PROGRAMMED. 3. “START” PAD TOUCHED. SCH...

Page 15 - DESCRIPTION AND FUNCTION OF COMPONENTS; door switch and primary interlock switch

13 DMOC205SSVMOC205SS THIRD DOOR SWITCH The switch is activated by the latch heads, while the dooris closed. When the door is opened, the switch interrupt thecircuit to the power transformer. This switch prevents powertransformer engaging and microwave when the door opened. THERMISTOR The thermistor...

Page 16 - TROUBLESHOOTING GUIDE; DAMPER OPEN-CLOSE MECHANISM; Damper Operation

14 DMOC205SSVMOC205SS TROUBLESHOOTING GUIDE When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks. Manyof the possible causes of trouble will require that a specific test be performed. These tests are given a procedure letter whichwill be...

Page 17 - TEST PROCEDURE; PROBLEM

15 DMOC205SSVMOC205SS A MAGNETRON B POWER TRANSFORMER C H.V. RECTIFIER ASSEMBLY D HIGH VOLTAGE CAPACITOR E PRIMARY INTERLOCK SWITCH F SECONDARY INTERLOCK SYSTEM G MONITOR SWITCH H MONITOR FUSE E THIRD DOOR SWITCH I THERMAL CUT-OUT J CONVECTION HEATER K THERMISTOR L DAMPER MOTOR M DAMPER SWITCH P TOU...

Page 21 - MEASURING POINT; If incorrect reading are obtained, replace the noise filter.

19 DMOC205SSVMOC205SS P TOUCH CONTROL PANEL ASSEMBLY TEST The touch control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore,unlike conventional microwave ovens, proper maintenance cannot be performed with only a voltmeterand ohmmeter.In this service manual, the t...

Page 23 - STEPS

21 DMOC205SSVMOC205SS U AH SENSOR TEST Checking the initial sensor cooking condition (1) The oven should be plugged in at least two minutes before sensor cooking.(2) Room temperature should not exceed 95 ο F (35 ο C). (3) The unit should not be installed in any area where heat and steam are generate...

Page 25 - TOUCH CONTROL PANEL ASSEMBLY; DESCRIPTION OF LSI

23 DMOC205SSVMOC205SS TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL The touch control section consists of the following unitsas shown in the touch control panel circuit. (1) Key Unit(2) Control Unit The principal functions of these units and the signalscommunicated among them are expla...

Page 29 - ABSOLUTE HUMIDITY SENSOR CIRCUIT; ) Absolute humidity sensor circuit

27 DMOC205SSVMOC205SS (1) Structure of Absolute Humidity Sensor The absolute humidity sensor includes two thermistorsas shown in the illustration. One thermistor is housed inthe closed vessel filled with dry air while another in theopen vessel. Each sensor is provided with the protectivecover made o...

Page 30 - SERVICING

28 DMOC205SSVMOC205SS SERVICING Transistor2SB910M Transistor DTA123ESKRA101MKRA223MKRC243M 1. Precautions for Handling Electronic Components This unit uses CMOS LSI in the integral part of thecircuits. When handling these parts, the followingprecautions should be strictly followed. CMOS LSI haveextr...

Page 31 - COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE; POWER TRANSFORMER REMOVAL; WARNING FOR WIRING; OUTER CASE REMOVAL

29 DMOC205SSVMOC205SS COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE CAUTION: DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE. DISCHARGE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRINGAFTER REMOVING OUTER CASE. POWER TRANSFORMER REMOVAL To prevent an electric shock,...

Page 32 - connector

30 DMOC205SSVMOC205SS POSITIVE LOCK ® CONNECTOR (NO-CASE TYPE) REMOVAL Push the lever of positive lock ® connector. Pull down on the positive lock ® connector. CAUTION: WHEN YOU CONNECTING THE POSITIVE LOCK ® CONNECTORS TO THE TERMINALS, INSTALL THE POSITIVE LOCK ® SO THAT THE LEVER FACES YOU. Figur...

Page 33 - THERMISTOR REMOVAL; OVEN LAMP AND LAMP SOCKET REMOVAL; HEATING ELEMENT REMOVAL; NOTE: After installed the heating element completely,

31 DMOC205SSVMOC205SS FAN MOTOR REMOVAL HEATER UNIT ASSEMBLY REMOVAL (HEATING ELEMENT/CONVECTION FAN/CONVECTION MOTOR/THERMISTOR) THERMISTOR REMOVAL 1. Disconnect oven from power supply and remove outer case cabinet. 2. Discharge the high voltage capacitor. Disconnect wire leads from H.V. capacitor ...

Page 34 - Shaft

32 DMOC205SSVMOC205SS CONTROL PANEL ASSEMBLY AND CONTROL UNIT REMOVAL To remove the control panel, procedure as follows:1. Disconnect oven from power supply and remove outer case. 2. Discharge high voltage capacitor.3. Disconnect connector CN-A, CN-E and CN-F from the control unit. 4. Disconnect the...

Page 35 - DOOR REPLACEMENT AND ADJUSTMENT; REMOVAL; THIRD DOOR SWITCH, DOOR SENSING SWITCH, PRIMARY

33 DMOC205SSVMOC205SS DOOR REPLACEMENT AND ADJUSTMENT REMOVAL 1. Disconnect oven from power supply and remove the outer case.Remove turntable tray and turntable support from ovencavity. 2. Remove three (3) screws holding lower oven hinge.3. Remove the lower oven hinge from oven cavity bottom flange....

Page 36 - DOOR DISASSEMBLY

34 DMOC205SSVMOC205SS 7. Make sure the door is parallel with oven face lines (left and upper side lines) and door latch heads pass throughlatch holes correctly. 8. Insert the lower oven hinge into oven cavity bottom flange and then engaged the door hinge pin. Thensecure the lower oven hinge firmly w...

Page 37 - MICROWAVE MEASUREMENT PROCEDURE; Leakage Test with Enclosure Installed.

35 DMOC205SSVMOC205SS MICROWAVE MEASUREMENT PROCEDURE Leakage test: 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 bodyof the oven. 2. Move the probe slowly, not faster than 2.5cm/sec. along the gap, wa...

Page 40 - DIP

38 DMOC205SSVMOC205SS 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 Figure S-3. Printed Wiring Board R R 0 1 2 1 3 1 1 1 1 1 1 65 4 32 1 1 13 5 7 9 45 7 8 3 3 1 4 58 12 12 12 32 33 64 3 4 6 9 13 CONVHEATER COM RED BRN ORG BLK PINK RED (BRN RED) D25 RY3 RY2 RY1 RY5 RY4 RY6 C11 R10 R11 D31D3...

Page 41 - PARTS LIST; DESCRIPTION; ELECTRICAL PARTS

39 DMOC205SSVMOC205SS PARTS LIST • Refer to "IMPORTANT" described at end of parts list. REF. NO. PART NO. DESCRIPTION Q'TY ELECTRICAL PARTS 1- 1 FACCDA074WRE0 Power supply cord 1 1- 2 FFS-BA012WRK0 Monitor fuse 20A and monitor switch (V-5220D-070) assembly 1 1- 3 FPWBFA293WRK0 Noise filter 1...

Page 42 - DOOR PARTS

40 DMOC205SSVMOC205SS REF. NO. PART NO. DESCRIPTION Q'TY CODE 4-16 FDUC-A323WRW0 Steam duct assembly 1 AY 4-17 MCAMPA030WRF0 Damper cam 1 AC 4-18 NSFTTA114WRE0 Damper shaft 1 AB 4-19 FFTA-A034WRK0 Damper door ass’y 1 AM 4-20 PDUC-A269WRW0 Damper duct 1 AK 4-21 PCUSGA398WRP0 Cushion 1 AC 4-22 NCPL-A0...

Page 44 - OVEN AND CABINET PARTS

42 DMOC205SSVMOC205SS OVEN AND CABINET PARTS 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 1-10 1-11 7-24 2-1 7-24 1-8 2-6 7-12 7-16 A 7-4 7-24 1 -19 7-24 4-32 7-19 4-33 4 -41 4 -15 7-26 1 -14 7 -10 TO OVE N B ASE PLATE 7-3 4-8 4-4 4-10 7-1 4-36 4-12 1-15 7-21 7-28 7-27 4-9 7-11 1-5 7-21 7...

Page 45 - CONTROL PANEL PARTS

43 DMOC205SSVMOC205SS 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 CONTROL PANEL PARTS 5-2 5-9 5-1 5 5-8 5-4 5-8 5-8 5-8 5-5 5-3 5-7 5-6 5-10 VMOC205SS DMOC205SS 5-11 7-24 7-24 3-5 3-4 3-7 3-3 3-2 3-2-1 3-6 3-1 3-2-3 3-7 3-2-2 3-9 3-8 Actual wire harness may be different than illustration...

Page 46 - PACKING AND ACCESSORIES

44 DMOC205SSVMOC205SS PACKING AND ACCESSORIES 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 4-3 TURNTABLE TRAY 6-9 OPERATION MANUAL 4-2 TURNTABLE SUPPORT TRAY PACKING FOAM DOOR PROTECTION SHEET MICROWAVE OVEN TOP PAD ASSEMBLY PLASTIC BAG TRAY HOLDER BOTTOM PAD ASSEMBLY Not replaceable item...

46 DMOC205SSVMOC205SS No part of this publication may be reproduced,stored in a retrieval system, or transmitted inany form or by any means, electronic,mechanical,photocopying, recording, or otherwise, withoutprior written permission of the publisher. COPYRIGHT © 2004 BY VIKING ALL RIGHTS RESERVED V...