As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 375 DURING ASPSU TEST FOUND ASPSU "FAULT" AND "OK" LEDS NOT COMING ON. CORRECTIVE ACTION: T/S. ASPSU(101MJ)DOOR1/DEUB( 330RH1) FAULT ON ASPSU SYSTEM TEST. WIRING CHECKS GOOD BETWEEN DEU B AND ASPSU. FOUND 28VDC AT PIN N AND P OF 101MJA. R/R ASPSU PER A330 AMM 52-71-36. (9749416)