As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SERVICE DOOR HARD TO OPEN (FROM INSIDE). CK OPS TEST OF SERVICE DOOR LATCH MECHANISM AND CHECKS BAD DOOR CLOSED AND LOCKED REF 180875/2 FOR MEL CMH 2-12-12:20. REMOVED SERVICE DOOR HANDLE, CLEANED AND LUBED RETURN TUBE AND RETURN GUIDE BOLT IAW AMM 52-41-03, OPS CHECK GOOD, REMOVED FROM MEL.