What was found
BOTH R1 AND L1 DOOR ESCAPE SLIDE RELEASE WARNING SYSTEM LIGHT TEST FAILED - AUDIBLE BUZZERS WORK ON BOTH DOORS. CHECKING ASPSU TEST SWITCH RESULTED IN NO LIGHTS AT ALL - BOTH BATTERIES APPEAR DISCHARGED. - REMOVED AND REPLACED BOTH BATTERIES IAW AMM 52-73-18-04 - NO HELP ASPSU LAMP TEST STILL DEAD. DEFER IAW MEL 52--XX-XX CAT : C EXP: 12JUN24 "MEL 52-XX-XX: L1 & R1 CREW ENTRY DOOR ESCAPE SLIDE WARNING SYSTEM LIGHTS - INOP. REMOVED AND REPLACED AUTONOMOUS STANDBY POWER SUPPLY UNIT (70WN) REF M/M 52-73- 18-04. TESTED REF M/M 52-73-00-05. NO FAULT LIGHTS PRESENT. ALSO CHECKED FUNCTION OF R1 SLIDE INDICATION ON ECAM REF M/M 52-73-13-05-01. OPS CHECKS GOOD OK FOR SERVICE.