As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SPD BRAKE KORRY LIGHT FAINTLY ON. NO EICAS MESSAGE UNLESS MASTER DIM/TEST. AIRCRAFT RETURNED TO GATE AND GROUNDED BY MAINTENANCE. FOUND EGPWS STUCK IN TEST MODE. RERACKED M983 AND ACCOMPLISHED LDG AND CONFIG TESTS IAW B767 AMM 31-51-00. SPDBRAKE LIGHT OPS NORMAL. THIS ACTION CLOSES DI. PLACARD REMOVED. NO MAINT REACTIVATION. AIRCRAFT RETURNED TO SERVICE.