As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI FOR DEPARTURE CREW NOTED LT THRUST REVERSER UNLOCK LIGHT WOULD NOT EXTINGUISH AFTER TEST. CREW RETURNED TO RAMP. MX PINNED THRUST REVERSERS IAW AMM 78-30 AND DEFERRED IAW MEL 78-1. MAINTENANCE BLED HYDRAULIC LINE TO OVERCENTER LATCH ACTUATOR. OPS CHECK GOOD.