1633 - APS FAULT. FC : 419,420 ~~~~~ 1633 - APS FAULT FC : 419,420  1633 FC 408 (APS fault), 419 (APS batt charger over voltage), 420 (APS power supply low voltage). Checked battery voltage and sensor - satis. Swapped control unit from #1633 to #2633 for monitoring. Found #3634 battery voltage and output current high. Battery voltage and sensor ok. Swapped DET110 from #3634 to #1634, fault transferred. Replaced DET110 card. Control unit after swap: #1633: 317RC000-2H #2633: 317RC000-4H DET110: #Old: 317RC001-2H #New: FB0002810-06H  Lee PT/Anand/Sugu/Alan 45327