4000 Switch Machine - Alstom

Table 5-1. Troubles Noticed from the Control LocationsTrouble/ Symptom1. Switch out of correspondence, Reverse orNormal position relay down (per switchposition request).Corrective Action1. Check for power at Normal and Reverserelay coil.2. Check for bad relay.2. Switch out of correspondence, switchmachine(s) failed to move (per switchposition request).1. Check that Reverse or Normal relay isup.2. Check for switch operational power atentrance rack. If none, check for blownfuse or switch machine amplifier.3. Check for switch operational power atswitch machine. If none, possible badcable, loose hardware and/orconnections.4. Check for obstruction in rail points.5. Check rail conditions in area.6. Check that proper configuration plug ispresent.7. Check switch machine amplifier LEDsfor display. Refer to “Amplifier LEDDisplay” in this section.8. Check fuse on underside of amplifier.P2444, Rev. Jan/07 5-2ALSTOM Signaling Inc.