LG MA748W 01 Service Manual - Page 26

oscillati (Display-operates-propW) CONDITION o microwave oscillation. CHECK DiSCv wire I relay P and heck continuity of relay2. perate the RESULT v L.vnunuuy. Continuity Checkh h vol normal 9 ge capacitor. Check high voltage diode. norma normal Abnormal CAUSE ethos REMEDY ep ace elective pig transformer RPplacc, high transformer elective hig voltage capacitor. Replace high voltage capacitor. Defective high voltage diode Replace high Itage diode. Check agnetro . Abnorma Defective magnetron. Replace -magnetron. NOTE: • Make sure the wire leads corrW3osition. •When-Removing the wire leadsirom the partsTtm-stire to grasp the con tor, not the wires. • When removing the magnetron, be sure to install the magnetron gasket in the correct position and in good condition. Output is full power when you set lower Power level Disconrdi wire leads from ruby 2 and check continuity relay 2. (Operate the Abnormal. Defective: assembly Replace assemb 5-15