As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE APPROACH THE LEFT MAIN AND LEFT ESSENTIAL BUSS LIGHT ILLUMINATED. CREW FOLLOWED THE QRH. DURING GEAR EXTENTION ONLY GOT GREEN FOR NOSE GEAR, FOLLOWED CHECKLIST TO DO MANUAL GEAR EXTENSION AND DECLARED EMERGENCY. LANDED WITHOUT FURTHER INCIDENT, TOWED TO GATE. REMOVED AND REPLACED LEFT PDU OPS CHECKED GOOD. FERRIED FOR EXPLOSIVE BOLT CHANGE.