Ricoh PJ WU6181N 6200-Lumen WUXGA LCD Projector (No Lens) - Manual (Page 191)

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7. Maintenance
To replace the lamp:
1. Remove the lamp cover.
(1) Loosen the lamp cover screw
• The lamp cover screw is not removable.
(2) Pull the bottom of the lamp cover towards you and remove it.
2. Remove the lamp housing.
(1) Loosen the two screws securing the lamp housing until the phillips screwdriver goes into a freewheeling condition.
• The two screws are not removable.
• There is an interlock on this case to prevent the risk of electrical shock. Do not attempt to circumvent this interlock.
(2) Remove the lamp housing by holding it.
CAUTION:
Make sure that the lamp housing is cool enough to before removing it.
Interlock Guide hole