As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CARGO TEST DETECTOR FAULT ILLUMINATES. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 26-16 TASK 804 AND FORWARD CARGO ELECTRONIC UNIT BITE REFERENCE FIM 26-16 TASK 801. BITE TEST PASS WITH NO FAULTS. PERFORMED FORWARD CARGO BAY SMOKE DETECTION OPERATIONAL TEST REFERENCE B737-800 AMM 26-16-00-710-801. OPS TEST PASS.