What was found
REFERENCE LOG 1 F/O'S DOME LIGHT ONLY HAS 2 LAMPS OPERATING ON BRIGHT AND NONE ON DIM FUNCTION. RELAMP, NO HELP. SUSPECT SWITCH. SWITCH CANNOT BE REPLACED WHILE 25VU PANEL INSTALLED ON ACFT. WHEN POWER IS REMOVED AND 25VU IS REMOVED, EMERGENCY EXIT LIGHTS COME ON. SWITCH IS ON FLIGHT DECK PEDESTAL. REPLACED SWITCH ACCORDING TO AWM 33-12-05, OPS CHECK GOOD.