Safety and Preparation

De-energize the system using the circuit breaker.

Removal Procedure

Remove the Top Cover.
Remove the Left Cover.
Disconnect all harnesses from the Power Conditioning Board.
Note the position of the ground wire under the upper left screw.
Remove the 4 mounting screws.
Remove the Power Conditioning Board.

Installation of New Board

Install the new Power Conditioning Board with the 4 screws, making sure to replace the ground wire under the board with the upper right screw.
Plug in all harnesses.

Reassembly and Power-Up

Replace the Left Cover.
Replace the Top Cover.
Re-energize the system.

Airport Lighting Company | L-880(L), L-881(L) Precision Approach Path Indicator Lights (PAPI)