NEC NP3150 User Manual page 149

If there is no picture, or the picture is not displayed correctly.
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NOTE: You can check the horizontal frequency of the current signal in the projector's menu [SOURCE(2)] under Information.
If it reads "0kHz", this means there is no signal being output from the computer. See page
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NOTE: A Video Adapter cable manufactured by Apple Inc. is needed for a PowerBook which does not have a mini D-Sub
15-pin connector.
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T H E T R U S T E D S O U R C E F O R P R O J E C T O R L A M P S A N D A C C E S S O R I E S
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9. Appendix
or go to next step.
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