As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED LGCIU 1 FAULT, HAD AMBER X INDICATIONS ON ECAM WHEEL PAGE WHERE THE GREEN TRIANGLE IS NORMALLY LOCATED. THIS OCCURRED AT THE RT TRIANGLE LOCATION FOR ALL GEARS. FLIGHT CREW DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. COMPLIED WITH TSM 32-31-00-810-809. REPLACED LGCIU 1 IAW AMM 32-31-71, PB 401. OPS CHECKED GOOD.