Directorio Marcas Viking DMOC205SS
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Tutorial Viking - DMOC205SS, VMOC205SS

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DMOC205SS
VMOC205SS

In the interest of user-safety the oven should be restored to its original condition and only parts identical to those specified
should be used.

WARNING TO SERVICE PERSONNEL: Microwave ovens contain circuitry capable of producing very high voltage and
current. Contact with the following parts may result in a severe, possibly fatal, electrical shock. (Inverter unit that includes
High Voltage Capacitor, High Voltage Power Transformer, High Voltage Rectifier and Heat sink etc., and Magnetron, High
Voltage Harness etc..)

TABLE OF CONTENTS

Page

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO
AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY ................... INSIDE FRONT COVER
BEFORE SERVICING ...................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL ................................................................................................................ 2
MICROWAVE MEASUREMENT PROCEDURE (Canada) ...................................................................................... 3
MICROWAVE MEASUREMENT PROCEDURE (USA) .......................................................................................... 4
FOREWORD AND WARNING ................................................................................................................................ 5
PRODUCT SPECIFICATIONS ............................................................................................................................... 6
GENERAL INFORMATION ................................................................................................................................... 6
OPERATION ......................................................................................................................................................... 8
TROUBLESHOOTING GUIDE ............................................................................................................................. 14
TEST PROCEDURE ............................................................................................................................................ 16
TOUCH CONTROL PANEL ASSEMBLY ............................................................................................................. 23
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE .................................................................. 29
PICTORIAL DIAGRAM ........................................................................................................................................ 36
POWER UNIT CIRCUIT ....................................................................................................................................... 37
PRINTED WIRING BOARD ................................................................................................................................. 38
PARTS LIST ........................................................................................................................................................ 39
PACKING AND ACCESSORIES ......................................................................................................................... 44

S14M227DMO205

DMOC205SS
VMOC205SS

MICROWAVE OVEN

MODELS

SERVICE MANUAL

This document has been published to be used for after
sales service only.
The contents are subject to change without notice.

Range Corporation

111 Front St., Greenwood, MS 38930

Tel: (888) 845-4641

(VMOC205SS model shown)

Páginas:
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Contenido del Manual

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    DMOC205SSVMOC205SS In the interest of user-safety the oven should be restored to its original condition and only parts identical to those specifiedshould be used. WARNING TO SERVICE PERSONNEL: Microwave ovens contain circuitry capable of producing very high
  • p. 2/48
    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
  • p. 3/48
    1 DMOC205SSVMOC205SS Notes
  • p. 4/48
    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, possiblyfatal, electrical shock. (Example) High Voltage Capacitor,
  • p. 5/48
    3 DMOC205SSVMOC205SS MICROWAVE MEASUREMENT PROCEDURE (CANADA) After adjustment of the door switches are completed individually or collectively, switch test and microwave leakage test mustbe performed with survey instrument and test result must be confirmed
  • p. 6/48
    4 DMOC205SSVMOC205SS MICROWAVE MEASUREMENT PROCEDURE (USA) A. Requirements: 1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1mW/cm 2 at any point 5cm or more from the
  • p. 7/48
    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
  • p. 8/48
    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
  • p. 9/48
    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,
  • p. 10/48
    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,
  • p. 11/48
    9 DMOC205SSVMOC205SS CONVECTION COOKING CONDITION PREHEATING CONDITIONProgram 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
  • p. 12/48
    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
  • p. 13/48
    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
  • p. 14/48
    12 DMOC205SSVMOC205SS SCHEMATIC NOTE: CONDITION OF OVEN1. DOOR CLOSED. 2. CONVECTION PAD TOUCHED. 3. DESIRED TEMP. TOUCHED. 4. COOKING TIME PROGRAMMED. 5. “START” PAD TOUCHED. SCHEMATIC NOTE: CONDITION OF OVEN1. DOOR CLOSED. 2. MIX COOKING PAD TOUCHED. 3.
  • p. 15/48
    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
  • p. 16/48
    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
  • p. 17/48
    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
  • p. 18/48
    16 DMOC205SSVMOC205SS TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST HIGH VOLTAGES ARE PRESENT DURING THE COOK CYCLE, SO EXTREME CAUTION SHOULDBE OBSERVED. DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTSOR WIRING. To test for an
  • p. 19/48
    17 DMOC205SSVMOC205SS If the capacitor is open, no high voltage will be available to the magnetron. Disconnect input leads andcheck for short or open between the terminals using an ohmmeter.Checking with a high ohm scale, if the high voltage capacitor is
  • p. 20/48
    18 DMOC205SSVMOC205SS Disconnect connector-E from the control unit. Measure the resistance of the thermistor with anohmmeter. Connect the ohmmeter leads to Pin No’s E-3 and E-4. K THERMISTOR TEST L DAMPER MOTOR TEST If the meter does not indicate above resistance,
  • p. 21/48
    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
  • p. 22/48
    20 DMOC205SSVMOC205SS S 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 the "DEFROST" pad twice and touch the Number pad "5". And then touch the "START"
  • p. 23/48
    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
  • p. 24/48
    22 DMOC205SSVMOC205SS Plunger NC NO COM COM NO NC R3 R4 R1 R2 1 2 3 F-1F-2 F-3 To connector (F)on Control Unit. CONNECTOR TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST When the AH sensor is defective (open or short), Error will appear in the display after
  • p. 25/48
    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
  • p. 26/48
    24 DMOC205SSVMOC205SS Pin No. Signal I/O Description 5 AN7 IN Used for initial balancing of the bridge circuit (absolute humidity sensor). This inputis an analog input terminal from the AH sensor circuit, and connected to the A/Dconverter built into the
  • p. 27/48
    25 DMOC205SSVMOC205SS Pin No. Signal I/O Description 18 P50 OUT Damper motor relay driving signal. To turn on and off shut-off relay(RY4). 19 P47 OUT Heating element driving signal.To turn on and off shut-off relay(RY3). "L" levelduring convection
  • p. 28/48
    26 DMOC205SSVMOC205SS Pin No. Signal I/O Description 37 P23 OUT Segment data signals.The relation between signals and indicators are as follows: Signal Segment Signal Segment Signal Segment Signal Segment P23 ............. P1 P17 ............. P5 P13 .............
  • p. 29/48
    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
  • p. 30/48
    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
  • p. 31/48
    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
  • p. 32/48
    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
  • p. 33/48
    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.
  • p. 34/48
    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
  • p. 35/48
    33 DMOC205SSVMOC205SS DOOR REPLACEMENT AND ADJUSTMENT REMOVAL1. 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
  • p. 36/48
    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
  • p. 37/48
    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,
  • p. 38/48
    36 DMOC205SSVMOC205SS Figure S-1. Pictorial Diagram 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 TURNTABLE MOTOR GRY BRN ORG GRN PNK BLK DAMPER MOTOR COOLING FAN MOTOR PNK RED CONV. THERMAL CUT-OUT MAGNETRON THERMAL CUT-OUT BLK BLK OVEN THERMAL
  • p. 39/48
    37 DMOC205SSVMOC205SS Figure S-2. Control Panel Circuit 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 + – + – + – + – + – + – A 9 A 7 A 1 A 3 A 5 E 1 E 2 E 5 E 6 E 3 E 4 F 1 F 2 F 3 N O N O N O COM COM COM VRS1 C1 0.1µ/50v C22 0.1µ/50v C3 0.1µ/50v
  • p. 40/48
    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)
  • p. 41/48
    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)
  • p. 42/48
    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
  • p. 43/48
    41 DMOC205SSVMOC205SS REF. NO. PART NO. DESCRIPTION Q'TY CODE 7-11 XBTWW40P06000 Screw; 4mm x 6mm 7 AA 7-12 XCTSD40P08000 Screw; 4mm x 8mm 7 AA 7-13 LX-NZ0029YBE0 Special nut 1 AA 7-14 XBPSD40P06KS0 Screw; 4mm x 6mm 2 AA 7-15 LX-WZA022WRE0 Washer 1 AB 7-16
  • p. 44/48
    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
  • p. 45/48
    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
  • p. 46/48
    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
  • p. 47/48
    45 DMOC205SSVMOC205SS NOTES:
  • p. 48/48
    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