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3. How to detect whether the demonstrator battery has electricity?

\u0026nbsp;\u0026nbsp;\u0026nbsp; After the battery is installed, open the power switch on the left side of the demonstrator (turn the power switch upwards to the On position), and press the laser button on the front panel of the presenter. If there is a laser beam, explain The battery is installed correctly, the demonstrator power switch is turned on, and the demonstrator is powered on.

4. The battery is installed, the power switch is turned on, but the laser is off?

\u0026nbsp;\u0026nbsp;\u0026nbsp; If the laser does not shine, it is usually due to the following reasons:

\u0026nbsp;\u0026nbsp;\u0026nbsp; 1.) The battery is not properly installed and the positive and negative electrodes are not correct. Please open the battery compartment, check the positive and negative polarity of the battery and reinstall it.

\u0026nbsp;\u0026nbsp;\u0026nbsp; 2.) The battery has no electricity. Please buy a new battery.

\u0026nbsp;\u0026nbsp;\u0026nbsp; 3.) Check the battery surface for plastic wrap. Some batteries are packed in a single package and have a very thick plastic film on the outside. If you do not pay attention, you will not see this plastic film. Please tear off the plastic film and reinstall the battery.

\u0026nbsp;\u0026nbsp;\u0026nbsp; 4.) The power switch does not open in place. Please turn off the power switch and turn it on again.

\u0026nbsp;\u0026nbsp;\u0026nbsp; 5.) Laser module failure. If the other functions of the demonstrator are normal and only the laser is off, the laser module is faulty. When the laser module fails, contact your dealer for after-sales service.

5. How to determine whether the laser function is normal?

\u0026nbsp;\u0026nbsp;\u0026nbsp; If the other functions of the demonstrator can be used normally, only the laser is off, it means the laser module is faulty. When the laser module fails, contact your dealer for after-sales service.

6. After the receiver is plugged into the computer USB, the computer does not respond or is not recognized?

\u0026nbsp;\u0026nbsp;\u0026nbsp; Make sure the computer's USB port is working properly and try another USB port. If necessary, try another computer.

\u0026nbsp;\u0026nbsp;\u0026nbsp; If other USB devices can work on this USB interface, it is a receiver failure. Please contact your dealer for after-sales service.

\u0026nbsp;\u0026nbsp;\u0026nbsp; It may be possible to check if the USB interface works by inserting another USB device into the USB port. If the receiver can work on other USB ports or work on other computers, it means that the USB port is faulty or there is a problem with the computer driver. USB port failure, please use other USB ports. When there is a problem with the computer driver, back up the data and reinstall the operating system.

7. The laser is normal. The receiver can be recognized by the computer. But all the functions of the transmitter cannot be used normally. Can't control the computer? \u0026nbsp;

\u0026nbsp;\u0026nbsp;\u0026nbsp; This condition is generally due to the receiver not correctly storing the address code, unable to receive the transmitter signal, and requiring a code operation.

8. How to code? \u0026nbsp;

\u0026nbsp;\u0026nbsp;\u0026nbsp; Hold down the right mouse button on the transmitter (Right button on the demonstrator panel), and then plug the receiver back into the USB port. When the receiver's lamp goes out, the code is successful.

\u0026nbsp;\u0026nbsp;\u0026nbsp; If the receiver's indicator does not go out, but flashes, the code was not successful. You can plug in the receiver again and repeat the code operation. If the code cannot be successfully completed more than 3 times, the receiver or transmitter has a fault. Please contact your dealer for after-sales service.

9. What if the laser beam becomes dark?

\u0026nbsp;\u0026nbsp;\u0026nbsp; The dimming of the laser beam is generally due to a lack of battery power and requires the replacement of a new battery. If the laser beam is still just a small red dot after replacing the new battery, it indicates that the laser module is aging. When the laser module ages, contact your dealer for after-sales service.

10. Why can't I open my Internet browser?

\u0026nbsp;\u0026nbsp;\u0026nbsp; When the browser button is pressed, the Wireless Presenter will open the Windows system default browser. If you change the system default browser, you may not be able to open the browser.

\u0026nbsp;\u0026nbsp;\u0026nbsp; In Windows XP, the default browser of the system can be modified by selecting 'Set Program Access and Defaults' from the 'Start' menu.

\u0026nbsp;\u0026nbsp;\u0026nbsp;In Windows Vista, you can modify the system default browser by selecting 'Default Programs' - 'Set Program Access and Defaults for this computer' from the 'Start' menu.

11. Why can't I open Email software?

\u0026nbsp;\u0026nbsp;\u0026nbsp; See 'Why can't I open my Internet browser?'.

12. Why can't I open Windows\u0026nbsp;Media\u0026nbsp;Player?

\u0026nbsp;\u0026nbsp;\u0026nbsp; See 'Why can't I open my Internet browser?'.

13. Why can't I open the screen soft keyboard?

\u0026nbsp;\u0026nbsp;\u0026nbsp; The screen keyboard tool is not installed on the system. Please reinstall the corresponding attachment in 'Control Panel' - 'Add or Remove Programs' - 'Add/Remove Windows Components'.

\u0026nbsp;\u0026nbsp;\u0026nbsp; It is also possible that the current Chinese input method was opened under the current input state, which affected the capture of the shortcut key by Windows. Please cancel the Chinese input status and try again.

14. Why can't I start Windows Magnifier?

\u0026nbsp;\u0026nbsp;\u0026nbsp; The system does not have the Windows Magnifier tool installed. Please reinstall the corresponding attachment in Control Panel - Add or Remove Programs - Add/Remove Windows Components.

\u0026nbsp;\u0026nbsp;\u0026nbsp; It is also possible that the current Chinese input method was opened under the current input state, which affected the capture of the shortcut key by Windows. Please cancel the Chinese input status and try again.

15. Why can't I enter the Windows\u0026nbsp;Media\u0026nbsp;Center start interface?

\u0026nbsp;\u0026nbsp;\u0026nbsp; This feature key only works if the operating system has the Windows\u0026nbsp;Media\u0026nbsp;Center feature. Operating systems with Windows\u0026nbsp;Media\u0026nbsp;Center function are Windows\u0026nbsp;XP\u0026nbsp;MCE\u0026nbsp;Windows\u0026nbsp;Vista\u0026nbsp;Home\u0026nbsp;Premium\u0026nbsp;Windows\u0026nbsp;Vista\u0026nbsp;Ultimate

16. If the system function is disorderly, press the corresponding button and perform other functions.

\u0026nbsp;\u0026nbsp;\u0026nbsp; Perhaps some of the system shortcuts have been changed by the application as a shortcut to another program. Please back up the data and reinstall the operating system.

\u0026nbsp;\u0026nbsp;\u0026nbsp; If the problem you are experiencing is not in the list above, you can get technical support through:

\u0026nbsp;\u0026nbsp;\u0026nbsp; 1.)\u0026nbsp; Dial Technical Support: 021-51872080.

\u0026nbsp;\u0026nbsp;\u0026nbsp; 2.)\u0026nbsp;Log in to the website forum and ask your technical support staff for your suggestions.

\u0026nbsp;\u0026nbsp;\u0026nbsp; 3.)\u0026nbsp; Leave a comment on the product related page.

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