As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAULT LIGHTS ILLUMINATED, NO INSTRUMENTATION ILLUMINATED IN COMBINER. DIVERTED AND ACCOMPLISHED UNEVENTFUL LANDING. FOUND FAULTS RELATED TO HGS COMPUTER OUTPUT TO OVERHEAD UNIT. R & R AND LLM RTS HGS COMPUTER IAW MAINTENANCE 6343501, AC REMAINS CAT III, RETURNED TO SERVICE.