h16tp(x - AJ Maskin AS

Sheet DP028BREAKDOWN DETECTION FLOW CHARTNO JIB MOVEMENT (UP AND / OR DOWN)FROM THE PLATFORM (OR TURNTABLE) CONTROL PANELFolio 3/5B- Invert the coils of the jib electrovalveYV18A and YV18B- Press the pedal and activate the platform(or turntable) jib switchThe defectivemovement up (1) ordown (2) is made in response to anopposite movement control:down (1) or up (2)NOEYESDPut coils YV18A and YV18B backin their original positionsPress the pedal and activate the jib switch.Check for 12V voltage at the terminals ofthe YV18A (down) or YV18B (up)connector12VOKNO- Open the turntable control panel- Press the pedal and activate the jib switch. Check for12V voltage at terminals 407A (down) or 408A (up) ofthe printed circuitYESSee FicheC059Replace coil YV18A(down) or YV18B(up)12VOKYESNOReplace theU1 moduleSee FicheC058 or C107ENDRepair the connection orreplace the wiring harnessbetween the turntable controlpanel and electrovalve YV18ENDThe faultpersistsReplace theprinted circuitENDYESNOENDSee FicheC063