As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIOR TO TOP OF DESCENT, MASTER RECALL PRESS ILLUMINATED PACK LIGHT. EXTINGUISHED AFTER RESET. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 21-53 TASK 807, NO FAULTS FOUND. ACCOMPLISHED FIM 21-62 TASK 801, NO FAULTS FOUND. PACK LIGHT NOT ILLUMINATED.