NEC DT20 User Manual - Page 24

■ When Images on the Personal Computer Screen are not Projected Check the following when images on the personal computer screen are not projected or projected images are incorrect. ● When images are not projected When external output signals are input to the DT20 from the PC, "No signal" is displayed on the screen. When this is displayed, check the following. 1 Try restarting the personal computer. The DT20 is sometimes not recognized by the PC if it is connected after the PC is started up. If this happens, images are not projected as external output signals are not output from the PC. 2 Check the functions on the personal computer. Some notebook PCs require a special operation to transmit the signals from the external output terminal. The external output signals may not be transmitted from the notebook PC unless the operation is performed. Refer to the manuals of your notebook PC for the information about how to output signals from the external output terminal. Procedure example • In the case of IBM PC/AT: Press Fn key together with one of the keys, F1 -F12. This procedure may vary depending on the model.) List of remedies when connection trouble with the PC occurs Manufacturer IBM COMPAQ DELL Series Think Pad CONTURA ARMADA LATITUDE External Output Switching Method Fn+f7 Fn+f4 Fn+f8 * The above table summarizes conditions that have occurred to date; it is not a comprehensive summary of all connections. * Company names and product names listed in the above table are trademarks or registered trademarks of respective companies. ● Images are not projected correctly even though they are displayed normally on the notebook PC screen 1 Verify the functions of the notebook PC. Even if the LCD screen of a notebook PC displays normal images, the projected images may be displayed incorrectly. In most cases, because of the limitations of the notebook PC, the simultaneous display function (the external output signals are sent out simultaneously while the images are displayed on the PC screen) produces signals, which do not satisfy the standard specification and are outside the range supported by the projector. In this case, the incorrect display images can not be corrected even if the fine adjustments are made at the projector side. The correct images may be projected if only external output signals are provided without using the simultaneous display. Refer to the user's manual of your notebook PC for details. E-24