LG MA8000ST Service Manual - Page 20

COMPONENTS TEST PROCEDURE Antenna Gasket 0 Chassis RESULTS HIGH VOLTAGE CAPACITOR Filament NOTE: When testing the magnetron, be sure to install the magnetron gasket in the correct position and be sure that the gasket is in good condition. Measure the resistance. (Ohm-meter scale: Rx1000) • Terminal to terminal. \ (-9' co o Normal: Momentarily indicates several ohms, and then gradually returns to infinite. Measure the resistance. (Ohm-meter scale: Rx1000) • Terminal to case. oro .. e Normal: Infinite. HIGH VOLTAGE DIODE NOTE : Some inexpensive meters may indicate infinite resistance in both direction. Measure the continuity (Forward). (Ohm-meter scale: Rx10000) op o CZ _ -1- Measure the continuity (Reverse). (Ohm-meter scale: Rx10000) 4 --0 oo o 6Thi - + Normal: Continuity. Abnormal: Infinite. Normal: Infinite. Abnormal: Continuity. 5-9