What was found
CLT - FLT1435 - DURING DESCENT INTO CLT FROM ORD, CREW REPORTED SMOKE ENTERING COCKPIT FROM BEHIND FIRST OFFICER "PULL UP" ANNUNCIATOR LIGHT ON FIRST OFFICER'S INSTRUMENT PANEL. ALSO, ALL LIGHTS ASSOCIATED WITH THE LIGHT TEST SWITCH ILLUMINATED. MOVING TEST SWITCH TO DIM POSITION EXTINGUISHED LIGHTS. FOUND CIRCUIT BREAKER SECTION 6 OF INDICATOR LIGHTS (MASTER, DIM) HAD TRIPPED. SMOKE THEN DISSIPATED. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE L385 LIGHT ASSEMBLY BELOW THE FIRST OFFICER'S GLARESHIELD. LIGHTS TEST NORMAL. GPWS TESTS NORMAL.