What was found
(CAN) ENROUTE RMU NR1 FAIL CAS MESSAGE, QRH PROCEDURES COMPLETED, THE ODOR OF ELECTRICAL FIRE/SMOKE WAS DETECTED IN THE COCKPIT. DECLARED AN EMERGENCY AND INITIATED ODOR OF SMOKE IN COCKPIT DRILL. PROCEEDED WITHOUT FURTHER INCIDENT.PAX DEPLANED AT GATE ,NORMALLY,FIRE DEPARTMENT INVESTIGATED FOR FURTHER DAMAGE. MAINTENANCE DETERMINED THAT THE RMU HAD SHORTED INTERNALLY AND CAUSED A SMOKE ODOR IN THE COCKPIT. THE NR 1 RMU WAS DISCONNECTED AND THE CIRCUIT BREAKER PULLED AND COLLERED.THE A/C WAS FERRY FLOWN, THE FOLLOWING DAY, A REPLACEMENT RMU IS IN TRANSIT. (TC NR 20070912009)