NEC LT240K - Manual (Page 122)

E-122
MAINTENANCE
Interlock
To replace the lamp:
1. Loosen the lamp cover screw until the screwdriver goes into a freewheel-
ing condition and remove the lamp cover. The lamp cover screw is not
removable.
2. Loosen the two screws securing the lamp housing until the screwdriver
goes into a freewheeling condition. The two screws are not removable.
3. Remove the lamp housing by pulling out the handle.
NOTE: There is an interlock on this case to prevent the risk of electrical shock.
Do not attempt to circumvent this interlock.