What was found
AFTER BLOCK IN, R1 DOOR SLIDE ARMED NOT ON ECAM. FIRST OFFICER SAID DOOR WAS ARMED, RECYCLED ARM HANDLE, STILL NO CHANGE, NO "SLIDE" ILLUMINATED. R & R R1 DOOR LIMIT SWITCH IAW AMM 52-71-11-04-01. OPS CHECK SHOWED DOOR CLOSED ON ECAM BUT DID NOT SHOW THAT DOOR WAS ARMED. WHILE TROUBLESHOOTING. R & R AUTONOMOUS STANDBY POWER SUPPLY UNIT IAW AMM 52-73-18-04. OPS CHECK OF DOOR WARNING SYS SHOWED DOOR CLOSED & SLIDE ARMED.