What was found
INSPECTION TYPE: NA, SUPPLEMENTAL SDR. ON PREFLIGHT RED L1 DOOR SLIDE WARNING LIGHT WILL NOT TEST. LIGHT DEFFERRED PER MEL52-73-01-1, M-732086 ASSIGNED PLACARD INSTALLED. REMOVED, CLEANED & RE-INSTALLED CONNECTGOR TO AUTONOMOUS STANDBY POWER SUPPLY UNIT (ASPSU). PERFORMED CREW ENTRY DOOR SLIDE WARNING TEST, PER AMM 52-73-00-10-0501. OPERATIONS CHECKED GOOD. M732086 CLOSED. PLACARD REMOVED. EFF SOURCE REF WDM 52-73-01 SHEET 1.