As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN WX, WX+T & MAP MODES CAPT SELECTED TILT IN MAN MODE DOES NOT MATCH INDICATED TILT ON NAV DISPLAY. IN MAN MODE, CAPT TILT SHOWS +15 DEG WITH 0 SELECTED ON RDR PNL; SHOWS +4 WITH -15 SELECTED. RDR APPEARS TO WORK NORMALLY IN AUTO MODE. FO RDR WORKS NORMALLY IN ALL MODES. GROUNDED - YES. VERIFIED TILT FAIL. REPLACED WX RDR CONT PNL - WX RDR & TILT SYS OPS OK. REF B737-9 AMM 34-41-53.