MEASUREMENT WITH OUTER CASE REMOVED

•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. (Circled area of Fig. below)

-Around the magnetron

-The waveguide

WARNING : AVOID CONTACTING ANY HIGH VOLTAGE PARTS

MEASUREMENT WITH A FULLY ASSEMBLED OVEN

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

•Microwave energy leakage must not exceed the values prescribed below.

NOTE: Leakage with the outer case removed less than 5 mW/cm.sq. 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/cm.sq.

NOTES WHEN MEASURING

•Do not exceed meter full scale deflection.

•The test probe must be moved no faster than

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

•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.

•When testing near a corner of the door, keep the probe perpendicular to the surface making sure the probe horizontally along the oven surface. Hold vertically when testing the top and bottom, and horizontally along.

RECORD KEEPING AND NOTIFICATION AFTER MEASUREMENT

•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.

•The microwave energy leakage should not be more than 4 mW/cm.sq. after determining that all parts are in good condition, functioning properly and genuine replacement parts which are listed in this manual have been used.

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

Copyright © 2007 LG Electronics. Inc. All right reserved.

5-2

LGE Internal Use Only

Only for training and service purposes

 

 

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LG Electronics MS3447GRS service manual Measurement with Outer Case Removed, Measurement with a Fully Assembled Oven
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MS3447GR, MS3447GRS specifications

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