What was found
CABIN EMERG LIGHT: ON PREFLIGHT, WITH BATTERIES IN OFF POSITION AND EMERGENCY LIGHTS PLACED IN ARM, NONE OF THE EMERGENCY LIGHTS ILLUMINATE. WITH EMERGENCY LIGHTS PLACED IN ON POSITION, RIGHT ICE DETENTION/EMERG LIGHT IS INOP AND ALL OTHER EMERGENCY LIGHTS ILLUMINATE. PERFORM EMER BATT POWER SUPPLY BATTERY POWER EXERCISE PROCEEDURE INSTEAD OF SWAPPING ANY POWER SUPPLIES AROUND.COMPLIED WITH NJA CE700 TC-FLT-33-1001, EMERGENCY LIGHTING POWER SUPPLY BATTERY POWER EXERSIZE PROCEEDURE. ALL LIGHTS ILLUMINATE AND STAYON FOR MORE THAN 10 MINUTES. OK TO CONTINUE.