As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R GENERATOR DRIVE LIGHT ILLUMINATED. DISCONNECTED RIGHT ENGINE GEN PER FLT MANUAL. SEE PREVIOUS HIST. SAMC TEXT: R-GEN DRIVE EICAS ADV MSG AND RT 'DRIVE' AMBER LIGHT ILLUMINATED ON OVERHEAD PANEL. FOUND WIRES W3538-003-18 AND W3538-004-18 SHORTING TO BACKSHELL AT CONNECTOR D10964 AT IDG. REPAIRED INSULATION PER SWPM. IDG OPS TEST NORMAL PER AMM.