NEC WT615 User Manual page 142

7. Maintenance
3. Remove the lamp housing by pulling out the handle.
Interlock
NOTE: There is an interlock on this case to prevent the risk of electrical shock. Do not attempt to circumvent this interlock.
4. Insert a new lamp housing until the lamp housing is plugged into the socket.
CAUTION
Do not use a lamp other than the NEC replacement lamp (WT61LP).
5. Secure it in place with the two screws.
Be sure to tighten the screws.
135