LG MA8000ST Service Manual - Page 23

1. Incomplete=segment • Segment missing • Partiatsegment missing_ • Digit flickering (NOTE. Slight flickering is normal.) of tarn-on-or-blink 3 stmurch ht 4. One or diyit5 • I tht display ate n ghtung. 5. Display does not-count down with time blinking or up with clock operation. 6 Risplay obviously jumps_in_time while counting down . Display elailliS down loo fast while cooking. . Each indicator light does-not-turn-on after setting cooking cycle. 9. Display time of day does_not reappear when cooking is fi 10. Beep sound is not heard when correct key is touched CONDITION CHECK RESULT CAUSE REMEDY 1. No input c programmed me inputs not be rogramme 3. Display shows number or figure different from one touched. Check-the-eennection between membrane key 11 bly and mbly. Continuity. No continuity. Defective PCB -► ass Replace PCB -11 0. assembly. I nose connection. Connect them tiglitly. Replace key membrane asternbly_and ck operation. Fverything works Defective key as specified. -111P membrane -assambly. =`•.- Still have trouble. Defective PCB assembly. Replace key membrane assembly. RP e PCB asserrgly. A._Random programming when touching other pads. b. Display is fixed at some figure nd can not accept any input. 5-12