Optoma DLP projector User Manual page 48

Appendices
Lamp Replacement Procedure:
1. Switch off the power to the projector by pressing the " " button.
2. Allow the projector to cool down for at least 30 minutes.
3. Disconnect the power cord.
4. Use a screwdriver to unscrew the 2 screws from the cover. 
5. Push up and remove the cover. 
6. Use a screwdriver to unscrew the 2 screws from the lamp module. 
7. Pull up the lamp handle carefully. 
8. Remove the lamp module. 
To replace the lamp module, reverse the previous steps.
9. Turn on the projector and use "Lamp Reset" after the lamp module is
replaced.
Lamp Reset: (i) Press "Menu"  (ii) Select "Options"  (iii) Select
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"Lamp settings"  (iv) Select "Lamp reset  (v) Select "Yes".
http://www.pureglare.com.au
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