TM 5-3895-374-24-2 Problem Cause Solution/Reference Output module failure on asphalt computer Check output module on blend I/O strip module #16 See electrical drawing AA00314 Output module failure on A/B PLC SLC500 Check output #12 on Card #12 Number 12 should be illuminated when divert selector is in divert position See electrical drawings AA00374 and AA00342 Control relay failure Check output relay CR244 4-4.  Control Van/Controls 4-4-1.  Asphalt Display (Screen) Problem Cause Solution/Reference Asphalt tons/hour not displayed Asphalt pump in reverse or stopped Select proper direction and start pump Asphalt meter not rotating Check meter Asphalt tanker empty Replenish A/C supply Broken tack wire Check leads on tack wire Control fuse blown Check voltage at terminal V3 in computer - should be 24Vdc See electrical drawing AA00313 page 4 - 4