What was found
ON APPROACH THE LDG HANDLE WAS PLACED DOWN, RECEIVED A EICAS WARNING MSG -LDG LEVER DISAG- REF QRH AND CYCKED TGE HANDLE WITH THE SAME MESSAGE. AGAIN REF QRH AND USED ELECTRICAL OVERIDE SWITCH AND GEAR CAME DOWN WITH NORMAL INDICATIONS. TROUBLESHOT TO PSEM 1, REPLACED PSEM 1 PER AMM 32-61-01, PERFORMED LANDING GEAR EXTENSION & RETRACTION FUNCTIONAL TEST PER AMM 32-33-00, OPS CHECK GOOD, NO FAULTS NOTED. OK TO RETURN TO SERVICE.