What was found
LEFT DC GEN LIGHT ILLUMINATED, RAN QRH, TRIED TO RESET, DIDN'T WORK, BUS TIE DID CLOSE. RETURNED TO MSP. MAINTENANCE REPLACED LT DC STARTER/GEN (P/N 23080-031) (S/N 97077) & LT DC GCU (P/N 51539-007B) (S/N 97988) PER SF 340MM 24-31-10-2. OPS CHECK GOOD.