Table of Contents
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Above model is example only
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..)
AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY .......................................................... 2
BEFORE SERVICING ............................................................................................................................................ 2
WARNING TO SERVICE PERSONNEL ................................................................................................................. 4
MICROWAVE MEASUREMENT PROCEDURE ..................................................................................................... 5
FOREWORD AND WARNING ............................................................................................................................... 7
PRODUCT SPECIFICATIONS ............................................................................................................................... 8
GENERAL INFORMATION.................................................................................................................................... 8
OPERATION ......................................................................................................................................................... 10
TROUBLESHOOTING GUIDE ............................................................................................................................. 14
TEST PROCEDURE ............................................................................................................................................ 15
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE................................................................. 26
PICTORIAL DIAGRAM ......................................................................................................................................... 32
PARTS LIST ........................................................................................................................................................ 33
PACKING AND ACCESSORIES .......................................................................................................................... 37
Range Corporation
111 Front St., Greenwood, MS 38930
Tel: (888) 845-4641
SERVICE MANUAL
TABLE OF CONTENTS
MICROWAVE OVEN MODELS
VMOS200AL
VMOS200BK
VMOS200WH
VMOS200BT
VMOS200SG
VMOS200GG
VMOS200BU
VMOS200GM
VMOS200SA
VMOS200CH
VMOS200PL
VMOS200AR
VMOS200FG
This document has been published to be used for after
sales service only.
1
REV 1 (Apr 2011)
S41M337VMO200
VMOS200RR
VMOS200PM
VMOS200IB
VMOS200SE
VMOS200LE
VMOS200MJ
VMOS200VB
VMOS200CB
VMOS200MS
VMOS200TP
VMOS200CW
VMOS200OG
VMOS200EP
Page
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Related Manuals for Viking VMOS200AL
Summary of Contents for Viking VMOS200AL
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Page 1: Table Of Contents
REV 1 (Apr 2011) SERVICE MANUAL S41M337VMO200 MICROWAVE OVEN MODELS VMOS200AL VMOS200RR VMOS200BK VMOS200PM VMOS200WH VMOS200IB VMOS200BT VMOS200SE VMOS200SG VMOS200LE VMOS200GG VMOS200MJ VMOS200BU VMOS200VB VMOS200GM VMOS200CB VMOS200SA VMOS200MS VMOS200CH VMOS200TP VMOS200PL VMOS200CW Above model is example only VMOS200AR VMOS200OG VMOS200FG... -
Page 2: Precautions To Be Observed Before And During Servicing To Avoid Possible Exposure To Excessive Microwave Energy
Before servicing an operative unit, perform a microwave emission check as per the Microwave Measure- ment Procedure outlined in this service manual. If microwave emissions level is in excess of the specified limit, contact Viking Service immediately @ 1-888-845-4641. If the unit operates with the door open, service person should (1) tell the user not to operate the oven and (2) contact VIKING, plus the Department Of Health, Canada and/or the Food and Drug Administration's Center for Devices and Radiological Health immediately. - Page 3 REV 1 (Apr 2011) Notes...
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Page 4: Warning To Service Personnel
REV 1 (Apr 2011) WARNING TO SERVICE PERSONNEL Microwave ovens contain circuitry capable of pro- ducing very high voltage and current, contact with following parts may result in a severe, possibly fatal, electrical shock. (Example) High Voltage Capacitor, High Voltage Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc.. -
Page 5: Microwave Measurement Procedure
REV 1 (Apr 2011) MICROWAVE MEASUREMENT PROCEDURE (CANADA) After adjustment of the door switches are completed individually or collectively, switch test and microwave leakage test must be performed with survey instrument and test result must be confirmed to meet the requirement of the performance standard for microwave ovens as undermentioned. - Page 6 REV 1 (Apr 2011) 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 at any point 5cm or more from the external surface of the oven, measured prior to acquisition by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm at any point 5cm or more from the external surface of the oven.
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Page 7: Foreword And Warning
VMOS201FG VMOS201EP FOREWORD OPERATION This Manual has been prepared to provide Viking Service Personnel with Operation and Service Information for the Viking Microwave Ovens. TROUBLESHOOTING GUIDE AND TEST PROCEDURE 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. -
Page 8: Product Specifications
REV 1 (Apr 2011) SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts / 13.0 Amperes/1500Watts 60 Hertz Single phase, 3 wire grounded Power Output 1100 watts (IEC-705 TEST PROCEDURE) Operating frequency of 2450MHz Case Dimensions Width 24" Height 13-3/8" Depth 19-1/8" Cooking Cavity Dimensions Width 17-3/8"... -
Page 9: Oven Diagram
REV 1 (Apr 2011) When installing this appliance, observe all applicable codes and ordinances. A short power-supply cord is provided to reduce risks of becoming entangled in or tripping over a longer cord. Where a two-pronged wall-receptacle is encountered, it is the personal responsibility and obligation of the customer to con- tact a qualified electrician and have it replaced with a properly grounded three-pronged wall receptacle or have a grounding adapter properly grounded and polarized. -
Page 10: Operation
REV 1 (Apr 2011) OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions dur- 7. The monitor switch electrically monitors the operation ing oven operation. of the primary switch and primary and is mechanically associated with the door so that it will function in the OFF CONDITION following sequence. - Page 11 REV 1 (Apr 2011) 2. The coil of shut-off relay (RY-1) is energized, the turntable motor are turned on, but the power transformer is not SENSOR COOKING CONDITION turned on. 3. After about 16 seconds, the cook relay (RY-2) is Using the SENSOR function, food is cooked without figur- energized.
- Page 12 REV 1 (Apr 2011) SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED 2. CLOCK APPEARS ON DISPLAY S E C ONDAR Y P R IMAR Y S WIT C H S WIT C H N.O. C OM. N.O. C OM. T T M C AP AC IT OR 1.0µF AC 2300V...
- Page 13 REV 1 (Apr 2011) DESCRIPTION AND FUNCTION OF COMPONENTS DOOR OPEN MECHANISM 3. If the door is opened, primary switch and contacts fail The door is opened by pushing the open button on the con- to open, the monitor fuse blows simultaneously with trol panel, refer to the Figure D-1.
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Page 14: Troubleshooting Guide
REV 1 (Apr 2011) TROUBLESHOOTING GUIDE Never touch any part in the circuit with your hand or an uninsulated tool while the power supply is con- nected. When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks. Many of the possible causes of trouble will require that a specific test be performed. -
Page 15: Test Procedure
REV 1 (Apr 2011) CK = Check / RE = Replace TEST PROCEDURE A B C D E E F F G H RE RE RE RE CK CK L M N POSSIBLE CAUSE DEFECTIVE PARTS PROBLEM CONDITION Home fuse or circuit breaker blows when power cord is plugged into wall receptacle. - Page 16 REV 1 (Apr 2011) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 4. To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check across the magnetron filament leads should indicate less than 1 ohm. 5. To test for a shorted magnetron, connect the ohmmeter leads between the magnetron filament leads and chassis ground.
- Page 17 REV 1 (Apr 2011) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER HIGH VOLTAGE RECTIFIER TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Isolate the rectifier from the circuit. Using the highest ohm scale of the meter, read the resistance across the terminals and observe, reverse the leads to the rectifier terminals and observe meter reading.
- Page 18 REV 1 (Apr 2011) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 8. Run the oven and check all functions. CAUTION: IF THE TEMPERATURE FUSE INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE, REPLACE TEMPERATURE FUSE. PRIMARY AND SECONDARY SWITCH TEST 1. Disconnect the power supply cord, and then remove outer case. 2.
- Page 19 REV 1 (Apr 2011) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 6. Reinstall the outer case (cabinet). 7. Reconnect the power supply cord after the outer case is installed. 8. Run the oven and check all functions. Screw Driver WHT/WHT Monitor Switch Ohmmeter Primary Interlock Switch...
- Page 20 REV 1 (Apr 2011) TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST The following symptoms indicate a defective key unit. a) When touching the pads, a certain pad produces no signal at all. b) When touching a number pad, two figures or more are displayed. c) When touching the pads, sometimes a pad produces no signal.
- Page 21 REV 1 (Apr 2011) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 6. Re-install the outer case (cabinet). 7. Reconnect the power supply cord after the outer case is installed. 8. Run the oven and check all functions. RELAY TEST Disconnect the power supply cord, and then remove outer case. 2.
- Page 22 REV 1 (Apr 2011) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER AH SENSOR TEST Checking the initial sensor cooking condition Warning: The oven should be fully assembled before following procedure. 1) The oven should be plugged in at least two minutes before sensor cooking. 2) Room temperature should not exceed 95 F(35 3) The unit should not be installed in any area where heat and steam are generated.
- Page 23 REV 1 (Apr 2011) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER CHECKING CONTROL UNIT (1) Disconnect the power supply cord, and then remove outer case. (2) Open the door and block it open. (3) Discharge high voltage capacitor. (4) Disconnect the sensor connector that is mounted to control panel. (5) Then connect the dummy resistor circuit (see fig.) to the sensor connector of control panel.
- Page 24 REV 1 (Apr 2011) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER NOISE FILTER TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Disconnect the leads to the primary of the power transformer. 5.
- Page 25 REV 1 (Apr 2011) ABSOLUTE HUMIDITY SENSOR CIRCUIT With this voltage given, the switches SW1 to SW5 in (1) Structure of Absolute Humidity Sensor the LSI are turned on in such a way as to change the The absolute humidity sensor includes two thermistors resistance values in parallel with R107 ~ R111 of IC2 as shown in the illustration.
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Page 26: Component Replacement And Adjustment Procedure
REV 1 (Apr 2011) COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE WARNING AGAINST HIGH VOLTAGE: Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts may result in severe, possibly fatal, electric shock. (Example) High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc.. - Page 27 REV 1 (Apr 2011) CAUTION: 1. DISCONNECT OVEN FROM POWER SUP PLY BEFORE REMOVING OUTER CASE. 2. DISCHARGE THE HIGH VOLTAGE CA- PACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING. Special screw NOTE: When replacing the outer case, the 2 special Torx screws must be reinstalled in the same locations.
- Page 28 REV 1 (Apr 2011) OVEN LAMP AND LAMP SOCKET REMOVAL Terminals 1. Disconnect the power supply cord and remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Remove the wire leads from the oven lamp the terminal Screw by pushing on the positive lock lever (C-1).
- Page 29 REV 1 (Apr 2011) COOLING FAN MOTOR REMOVAL REMOVAL CAUTION: 1. Disconnect the power supply cord and then remove outer * Do not reuse the removed fan blade because the case. hole (for shaft) may be larger than normal. 2. Open the door and block it open. 3.
- Page 30 REV 1 (Apr 2011) 3. Secure latch head (with two (2) mounting screws) to and check continuity of the monitor circuit. Refer to chapter oven flange. "Test Procedure" and Adjustment procedure. 4. Make sure that the monitor switch is operating properly DOOR SENSING SWITCH/PRIMARY SWITCH/SECONDARY SWITCH AND MONITOR SWITCH ADJUSTMENT 1.
- Page 31 REV 1 (Apr 2011) Note: After any service to the door; (A) Make sure that door sensing switch and secondary interlock switch are operating properly. (Refer to chapter “Test Procedures”.). (B) An approved microwave survey meter should be used to assure compliance with proper microwave radiation emission limitation standards.
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Page 32: Pictorial Diagram
REV 1 (Apr 2011) -
Page 33: Parts List
Outer case cabinet CONTROL PANEL PARTS 3- 1 CPWBFB128MRU0 Control unit 3- 2 FPNLCB544MRK0B Control panel frame with key unit (VMOS200AL) 3- 2 FPNLCB543MRK0B Control panel frame with key unit (VMOS200WH) 3- 2 FPNLCB616MRK0A Control panel frame with key unit (VMOS200PL) - Page 34 NTNT-A099WRE0 Turntable tray 6- 5 TCAUAA318WRRZ Monitor caution label 6- 6 TCAUAB048MRR0 DHHS/Screw caution label 6- 7 UDSKDB002MRK3 Viking CD (Installation, Operation, Cookbook, etc.) 6- 8 QW-QZA258WRZZ High voltage wire A 6- 9 TCADUB010MRR0 Recipe card 6-10 TLAB-B047MRR0 Menu label...
- Page 35 REV 1 (Apr 2011) OVEN AND CABINET PARTS 4-16 6-12 6-11 1-14 4-11 1-13 4-15 4-14 4-13 1-10 6-10 7-10 4-10 1-11 1-12 4-12...
- Page 36 REV 1 (Apr 2011) CONTROL PANEL PARTS DOOR PARTS MISCELLANEOUS Actual wire harness may be different from illustration.
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Page 37: Packing And Accessories
REV 1 (Apr 2011) PACKING AND ACCESSORIES TOP PAD ASSEMBLY DOOR PROTECTION SHEET PLASTIC BAG TRAY HOLDER 6-4 TURNTABLE TRAY 6-7 VIKING CD 6-9 RECIPE CARD BOTTOM PAD ASSEMBLY 6-3 TURNTABLE SUPPORT PACKING CASE Non-replaceable items. - Page 38 REV 1 (Apr 2011) NOTES...
- Page 39 REV 1 (Apr 2011) NOTES...
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Page 40: Range Corporation 111 Front St., Greenwood, Ms
REV 1 (Apr 2011) © 2011 BY VIKING COPYRIGHT ALL RIGHTS RESERVED No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.