As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SINGLE CHANNEL SPEED TRIM FAULT FOUND AT TOP OF DESCENT SPEED TRIM LIGHT EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. COMPLIED WITH B737-9 IFIM TASK 22-11-00-B10-B73. BITE TEST NO FAULTS FOUND. COMPLIED WITH DFCS OPS TEST PER B737-9 AMM 22-11-00-740-801. TEST PASSED. SPEED TRIM FAIL LIGHT EXTINGUISHED.