As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLT FL240 NR 1 BUS OFF LIGHT ILLUMINATED. FEW MINUTES LATER CSD LOW OIL PRESSURE LIGHT ILLUMINATED. DISCONNECT CSD IAW QRH AND RETURNED TO DEPARTURE. DURING CRUISE, ENGINE WAS SHUTDOWN IN ERROR, AND RESTARTED AFTER 5 MINS. CSD WAS THEN DISCONNECTED.