Viking CDMOS200, CVMOS200 service manual Steps Occurrence Cause or Correction

Page 22

CDMOS200

DMOS200

VMOS200

CVMOS200

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT TEST

MFOIL PATTERN ON THE PRINTED WIRING BOARD TEST

To protect the electronic circuits, this model is provided with a fine foil pattern added to the primary on the PWB, this foil pattern acts as a fuse.

1.Foil pattern check and repairs.

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)Follow the troubleshooting guide given below for repair.

STEPS

OCCURRENCE

CAUSE OR CORRECTION

1

Only pattern at "a" is broken.

*Insert jumper wire J1 and solder.

2

Pattern at "a" and "b" are broken.

*Insert the coil RCILF2003YAZZ between "c" and "d".

5)Make a visual inspection of the varistor. Check for burned damage and examine the transformer with a tester for the presence of layer short-circuit (check the primary coil resistance which is approximately 210 ohm ± 15%). If any abnormal condition is detected, replace the defective parts.

VRS1

VH

1 AC

T1

 

 

 

2

 

 

d

CN - A

XA

 

 

b

(J1)

c

 

a

 

 

 

 

 

 

 

 

 

 

 

 

D U

OMIF

6)Reconnect all leads removed from components during testing.

7)Re-install the outer case (cabinet).

8)Reconnect the power supply cord after the outer case is installed.

9)Run the oven and check all functions.

2.Follow the troubleshooting guide given below, if indicator does not light up after above check and repairs are finished.

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)Ensure that these leads remain isolated from other components and oven chassis by using insulation tape.

6)After that procedure, re-connect the power supply cord.

7)Follow the troubleshooting guide given below for repair.

STEPS

OCCURRENCE

CAUSE OR CORRECTION

 

 

 

 

The rated AC voltage is not present between

 

1

Pin No. 1 of the 2-pin connector (A) and the

Check supply voltage and oven power cord.

 

common terminal of the relay RY1.

 

 

 

 

2

The rated AC voltage is present at primary

Low voltage transformer or secondary circuit defective.

side of low voltage transformer.

Check and repair.

 

 

 

 

8)Disconnect the power supply cord, and then remove outer case.

9)Open the door and block it open.

10)Discharge high voltage capacitor.

11)Reconnect all leads removed from components during testing.

12)Re-install the outer case (cabinet).

13)Reconnect the power supply cord after the outer case is installed.

14)Run the oven and check all functions.

20

Page 21 Page 23
Image 22
Page 21 Page 23
Contents Table of Contents Models CDMOS200 VMOS200Before Servicing CDMOS200 VMOS200 CVMOS200 When the testing is completed Before ServicingRequirements Microwave Measurement Procedure CanadaLeakage test with enclosure installed Leakage test without enclosureMicrowave Measurement Procedure USA Leakage testViking Range Corporation If provided, Vent Hood, Fan assembly, Cooling Fan MotorMicrowave Ovens DMOS200 CDMOS200 VMOS200 CVMOS200 Foreword Description SpecificationGeneral Information Grounding InstructionsMove the Round Grounding Prong from this Plug Oven DiagramVMOS200 model shown Description of Operating Sequence Power Level P-0 to P-90 CookingOperation OFF ConditionSensor Cooking Condition Cooking SequenceSchematic Door Closed Clock Appears on Display Imar Y IT C H C O Ndar Y S W IT C HDescription and Function of Components Troubleshooting Guide Problem Test ProceduresTest Procedure Procedure Letter Component Test Magnetron Assembly TestMicrowave Output Power Procedure Letter Component TestPower Transformer Test Magnetron Temperature Fuse Test Procedure Letter Component Test High Voltage Rectifier TestCavity Temperature Fuse Test High Voltage Capacitor TestSecondary Interlock System Test Door Sensing SwitchMonitor Switch Test Secondary Interlock Relay RY2Before testing Touch Control Panel Assembly TestBlown Monitor Fuse Test Test Procedures KEY Unit TestRelay Test Weight 1ST Stage 2ND Stage Level TimeCompu Defrost Test Occurrence Cause or Correction Steps Occurrence Cause or CorrectionChecking the initial sensor cooking condition Testing Method for AH Sensor and /OR Control UnitAH Sensor Test Water load cooking testProcedure Letter Component Test Checking Control Unit Procedure Letter Component Test Noise Filter Test Measuring Point Indication of OHM-METERTouch Control Panel Assembly LSIIXA098DR Signal coming from touch key Signal synchronized with commercial power source frequencyKey strobe signal Signal similar to P17Pin No Power source voltage GND0VInternal clock oscillation frequency control input setting AH sensor inputSEG Segment data signalCommon data signal COM10 COM7 OUTAbsolute Humidity Sensor Circuit Structure of Absolute Humidity SensorTouch Control Panel Servicing Other PrecautionsServicing Tools Component Replacement and Adjustment Procedure Outer Case RemovalHigh Voltage Rectifier and High Voltage Capacitor Removal Power Transformer RemovalRe-install Magnetron RemovalOven Lamp and Lamp Socket Removal Positive Lock Connector NO-CASE Type RemovalControl Panel Assembly Removal Turntable Motor RemovalCooling FAN Motor Removal AH Sensor ReplacementRE-INSTALL RemovalDoor Replacement After adjustment, check the followingInstallation After any service, make sure of the followingSealer Film Diagram HIG H Voltag E C OmponeFigure S-2 Power Unit Circuit Circuit Figure S-3 CPUUnitFigure S-5 Printed Wiring Board of Power Unit Cabinet Parts Parts ListElectric Parts Control Panel PartsMiscellaneous Door PartsSCREWS,NUTS and Washers Oven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous Packing and Accessories Copyright 2002 by Viking
Related manuals
Manual 45 pages 12.01 Kb

CVMOS200, CDMOS200, DMOS200, VMOS200 specifications

The Viking VMOS200, DMOS200, CDMOS200, and CVMOS200 are advanced products designed for telecommunications and power management applications. Each model showcases unique features and technologies that make them stand out in their respective fields.

The VMOS200 is built on the vertical MOSFET technology, allowing for optimized performance in high-power applications. This device excels in switching capabilities and minimizing conduction losses, leading to improved efficiency. The VMOS200 is ideal for use in power amplifiers and high-frequency applications, where reliable performance and thermal stability are crucial. Its rugged design ensures that it can withstand harsh environments, making it a preferred choice for industrial and aerospace applications.

Next, the DMOS200 employs a double-diffused MOSFET technology, which enhances its thermal performance and power handling capabilities. This model is particularly effective in low-voltage applications where efficiency is paramount. The DMOS200 features a low on-resistance characteristic, allowing for reduced energy loss during operation. Its fast switching speed enables high-frequency operation, making it suitable for RF amplifiers and motor drives.

The CDMOS200 introduces a charge-balanced design, optimizing the allocation of charge carriers within the device to minimize heat generation and improve efficiency. This model is tailored for demanding applications in communications where signal integrity and power efficiency are critical. With its high breakdown voltage and robust construction, the CDMOS200 can handle more demanding operational conditions, making it popular in cellular and satellite communication systems.

Lastly, the CVMOS200 combines the advantages of vertical and charge-balanced technologies, offering a versatile solution for a broad range of applications. This hybrid design provides high efficiency, exceptional reliability, and enhanced thermal management. The CVMOS200 is particularly well-suited for switching power supplies and audio amplification. Its compact footprint allows for integration into space-constrained designs while maintaining high performance.

In summary, the Viking series of devices—VMOS200, DMOS200, CDMOS200, and CVMOS200—offer a range of features, technologies, and characteristics tailored to meet the demands of modern power electronics and telecommunications. With their robust designs, high efficiency, and adaptability to various applications, these devices are integral components for engineers and designers looking to create cutting-edge technological solutions.
Top Page Image Contents