Nikon NP64 - Manual (Page 91)

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7. Maintenance
8. Connect the supplied power cable and turn on the projector.
9. Finally, select the menu → [RESET] → [CLEAR LAMP HOURS] to reset the lamp usage hours.
NOTE: When you continue to use the projector for another 100 hours after the lamp has reached the end of its life, the projector
cannot turn on and the menu is not displayed.
If this happens, press the HELP button on the remote control for 10 seconds to reset the lamp clock back to zero.
When the lamp time clock is reset to zero, the LAMP indicator goes out.
(2) Tighten the cooling pump cover screw.
- Be sure to tighten the cooling pump cover screw.
This completes the cooling pump replacement.
Go on to the next step.
7. Install a new cooling pump.
(1) Align the tabs on the cooling pump cover with the guide on the cabinet and slide the cooling pump cover.
(2) Remove the cooling pump cover.
Contact area of the connector
NOTE: Keep the contact area of the connector clean. If there are dust and dirt in the contact area of the connector, remove them.