LG Electronics LMV1825SBQ, MV1825SW service manual Removing Magnetron

Page 19

D. REMOVING MAGNETRON

(Figures 11 Through 13)

(1)Remove the vent grille by loosening two screws. (Figure 11)

(2)Remove the outcase. See page 7-6.

(3)Remove three tap tite screws securing the magnetron to the wave guide.

(4)Remove the magnetron VERY CAREFULLY.

Figure 11

Door

Vent Grille

Figure 13

NOTES:

When removing the magnetron, make sure that its dome does not hit any adjacent parts, or it may be damaged.

When replacing the magnetron, be sure to install the magnetron gasket in the correct position and be sure that the gasket is in good condition.

After replacing the magnetron, check for microwave energy leakage with a survey meter Check microwave energy leakage must be below the limit of 5 mW/cm 2 . (All service adjustments should be made for minimum microwave energy leakage readings.)

Mount,All

(1 or 2 screws)

Mounting

Plate

Out Case

Controller

(3 screws)

Figure 12

7-8

Image 19
Contents Microwave Oven Safety Precautions in this ManualPage Table of Contents Specifications Microwave Radiation Grounding Instructions InstallationControl Panel Operating InstructionsControl Panel Instructions Schematic Diagram Overall Circuit DiagramMatrix Circuit for Touch KEY Board Features and Specifications Features General Precautions in USETrial Operation Preliminary Precautions and Repair Service TipsEquipment Microwave Leakage TestMeasurement with the Outer Case Removed Power Output MeasurementImportant Notes Disassembly InstructionsHOW to Insert the F.P.C. Connector HOW to Remove the F.P.C. ConnectorRemoving the OUT CASEFigure Removing the Door Interlock Switches Figures 9,10 Removing Magnetron Removing Door Figure Removing Stirrer FANRemoving the Ventilation Motor Assembling DoorReplacing the Humidity Sensor Removing the Turntable Motor Interlock Mechanism Interlock SystemTest the Latch and Switch Sequence Interlock Continuity Test Components Test Procedure ResultsTest Procedures Test and Checkout PROCEDURES, and Trouble ShootingHIGH-VOLTAGE Diode FPC Connector Power Level Checkout ProceduresCheckout Procedures for Relay Problem a Checkout Procedures for Circuit Board Trouble Shooting Circuit board Poor Check the contact of relay 2see Normal Operation Circuit board Fuse Exploded View Control Panel Oven Cavity Latch Board Interior 50FZZA Installation Schematic Diagram of P.C.B Printed Circuit Board May