Loosen four captive screws in lamp
Remove lamp mounting panel from lighted
indicator display housing.
Remove CTIS overspeed indicator lamps
from printed circuit board.
Set multimeter to ohms.
Check continuity through each CTIS overspeed
indicator lamp and note reading on multimeter.
If continuity is not present, replace lamps
If continuity is present, replace lighted indicator
display (para 7-16).
Install CTIS overspeed indicator lamps in
printed circuit board.
Install lamp mounting panel in lighted indicator
Tighten four captive screws in lamp mounting
Connect lighted indicator display to connector
Position lighted indicator display in instrument
panel assembly with four screws.
Tighten four screws to 6-10 lb-in. (1 N·m).
Connect batteries (para 7-57).