As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING #2 SVC CHECK FOUND L4 DOOR SLIDE PRESSURE OUT OF LIMITS REF AMM 25-66-01-200-801. L4 DOOR SLIDE NIS IN EWR, REF IPC 25-66-01-04A ITEM (50) P/N 63604-339 (M/E 23-2566-9-0002) REMOVED AND REPLACED L4 EMERGENCY ESCAPE SLIDE AS PER MM TASK 25-66-01-400-801.