What was found
2 LAVS STOPPED FLUSHING OTHER LAV WONT STOP FLUSHING. FIRST CLA SS INOP WRITE-UPS CREATED TO IDENTIFY SPECIFIC PROBLEMS NOTED. LOG 6757388 NOTED AS DRIVING FACTOR. EXAMINED LOGIC CONTROL MODULE AND FOUND NO ABNORMAL OR ANY INDICATION OF FAULTS. REMOVED AND REPLACED POINT LEVEL SENSORS (2) ON WASTE TANK AS PRECAUTION. PERFORMED AUTO ZERO ADJUSTMENT IN STRICT ADHERENCE TO MAINTENANCE MANUAL PROCEEDURE, TIMING AND SEQUENCE.