TM 5-3610-253-14
(4) Insert new lens and secure in place with mounting nut.
(5) Reinstall photo element board and secure with screws.
(6) Reinstall light barrier cover and retain with screws.
(7) Place operator key back into safety lock.
f. To replace photo element board, proceed as follows:
(1) Disconnect photo element board connector and disconnect wires from
signal lamp.
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