GE MV1526B, MV1526W Power Output Measurement, Measurement with the Outer Case Removed

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MEASUREMENT WITH THE OUTER CASE REMOVED

(1)When you replace the magnetron, measure for microwave energy leakage before the outer case is installed and after all necessary components are replaced or adjusted. Special care should be taken in measuring the following parts.

-Around the magnetron

-The waveguide

WARNING: AVOID CONTACTING ANY HIGH VOLTAGE PARTS.

MEASUREMENT WITH A FULLY ASSEMBLED OVEN

(1)After all components, including the outer panels, are fully assembled, measure for microwave energy leakage around the door viewing window, the exhaust opening and air inlet openings.

(2)Microwave energy leakage must not exceed the values prescribed below.

NOTES:

Leakage with the outer panels removed less than 5 mW/cm2. Leakage for a fully assembled oven (“Before the latch switch (primary) is interrupted”) with the door in a slightly opened position - less than 2 mW/cm2.

NOTE WHEN MEASURING

(1)Do not exceed meter full scale deflection.

(2)The test probe must be moved no faster than

1 inch/sec (2.5cm/sec) along the shaded area, otherwise a false reading may result.

(3)The test probe must be held by the grip portion of the handle. A false reading may result if the operator’s hand is between the handle and the probe.

(4)When testing near a corner of the door, keep the probe perpendicular to the surface being tested. (Hold vertically when testing the top and bottom, and horizontally along the side.)

RECORD KEEPING AND NOTIFICATION AFTER MEASUREMENT

(1)After adjustment and repair of any microwave energy interruption or microwave energy blocking device, record the measured values for future reference. Also enter the information on the service invoice.

(2)Should the microwave energy leakage not be more than 2 mW/cm2 after determining that all parts are in good condition, functioning properly and genuine replacement parts which are listed in this manual have been used.

(3)At least once a year, have the electromagnetic energy leakage monitor checked for calibration by its manufacturer.

POWER OUTPUT MEASUREMENT

(1)Microwave power output measurement is made with the microwave oven supplied at its rated voltage and operated at its maximum microwave power setting with a load of (1000±5) g of potable water.

(2)The water is contained in a cylindrical borosilicate glass vessel having a maximum material thickness of 1/8” (3 mm) and an outside diameter of approximately 7.6” (190mm).

(3)The oven and the empty vessel are at ambient temperature prior to the start of the test.

(4)The initial temperature (T1) of the water is (10±2)°C (50°F) It is measured immediately before the water is added to the vessel. After addition of the water to the vessel, the load is immediately placed on the center of the turntable which is in the lowest position and the microwave power switched on.

(5)The time T for the temperature of the water to rise by a value ∆ T of (10±2)°K is measured, where T is the time in seconds and ∆ T is the temperature rise. The initial and final water temperatures are selected so that the maximum difference between the final water temperature and the ambient temperature is 5°K.

(6)The microwave power output P in watts is calculated from the following formula :

4187 x (∆ T)

P =

T

is measured while the microwave generator is operating at full power. Magnetron filament heat-up time is not included. (about 3 sec)

(7)The water is stirred to equalize temperature throughout the vessel, prior to measuring the final water temperature.

(8)Stirring devices and measuring instruments are selected in order to minimize addition or removal of heat.

WATER LOAD

TURNTABLE

7-3

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Contents Safety Precautions in this Manual Microwave OvenPage Table of Contents Specifications Microwave Radiation AntennaInstallation Grounding InstructionsOperating Instructions Control PanelControl Panel Instructions Overall Circuit Diagram Schematic DiagramMatrix Circuit for Touch KEY Board Features and Specifications Features General Information for ServiceGeneral Precautions in USE Trial OperationPreliminary Service InformationPrecautions and Repair Service Tips Microwave Leakage Test EquipmentPower Output Measurement Measurement with the Outer Case RemovedDisassembly Instructions Important NotesHOW to Remove the F.P.C. Connector HOW to Insert the F.P.C. ConnectorRemoving the OUT CASEFigure Removing the Door Interlock Switches Figures 9,10 Wire ColorRemoving Magnetron Removing Door Figure Assembling Door Removing the Ventilation FAN ASS’YRemoving the Turntable Motor Interlock System Interlock MechanismTest the Latch and Switch Sequence Interlock Continuity Test Components Test Procedure ResultsSwitches Magnetron Test and Checkout PROCEDURES, and Trouble ShootingTest Procedures HIGH-VOLTAGEHIGH-VOLTAGE Capacitor HIGH-VOLTAGE DiodeMatrix Circuit for FPC ConnectorTouch KEY Board Connectorkey CON Checkout Procedures for Fuse Blowing Checkout ProceduresPower Level RELAY2YES Good Checkout Procedures for Relay Problem aRELAY3 Problem B YESCheckout Procedures for Circuit Board Trouble Shooting Thermostat Page Fuse Exploded View Control Panel Oven Cavity Latch Board Interior 50FZZA Installation Schematic Diagram of P.C.B Printed Circuit Board July

MV1526W, MV1526B specifications

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