When i turn on the video projector and send me this message"the panel keys are locked "

When you enable the Control Panel Lock function, you can lock all of the projector's buttons, or all of the buttons except the Ppower button. The remote control can still be used to operate the projector.
1. Press the Menu button, highlight the Settings menu, and press Enter.
2. Select Control Panel Lock and press the Enter button.
3. To disable the Control Panel Lock function, select Off in the Control Panel Lock menu.
4. Select Yes and press Enter to confirm the setting.
5. Press the Menu button to exit.

*- Or press and hold the Enter button on the projector's control panel for seven seconds. A message is displayed and the lock is released.

If you need a manual for your unit, goto here:
http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?BV_UseBVCookie=yes&infoType=Doc&oid=140128&prodoid=63085205

and click "Users Giude".

Turn the projector on and leave in standby mode. To do this press the power on button for 10 seconds until the projector comes on.
To unlock the main panel keys, press the MENU button for 10 seconds.

disconnect cable from the projector end. Then connect the free end of the cable to an LCD monitor to confirm that the video is coming out the laptop and out the same cable.

Then reconnect the projector.
press the source button until the video appears

Go into the settings menu of the projector and turn off the auto source function, then select the input that you are using.

if using a laptop you may have to simultaneously press your FN and relevant 'F' key to send the signal out to the projector. The 'F' key usually has an image of two side by side monitors or it says LCD/CRT. Wait a few seconds each time for the signal to be sent to the projector. Sometimes you may have to repeat this action 3 times to get the image on both your laptop and your projector.

good luck

hi the send key is usually a green key. on the phone the send key is opposite the power key.

I’m happy to help further over the phone at https://www.6ya.com/expert/ronald_e152e07e272e4f27

When the control panel lock ON of the projector so that the projector can be operated only with the REMOTE CONTROL.
If you loos your remote control then keeping the POWER key on the projector control panel pressed for 10 seconds turns the projector ON when it is in standby mode, and turns the projector to standby mode when the power is on. If you press and hold the MENU key for about10 second when the power is on the lock will be released and "panel key lock" is automatically set to "OFF"

Hi,
In most cases this problem is cured by enabling the external VGA (or monitor) ouput on the laptop. The quickest way is to reboot the laptop with the projector turned on and connected. Usually the laptop will detect an external display is attached and enable the port.
It is also possible to manually enable the external display port. It varies from laptop to laptop but look for the "Fn" key at the bottom left of the keyboard, usually coloured green or blue. You should see a row of icons on the top row of "F" keys which is in the same colour. Look for the one which is either a monitor, or possibly says LCD or CRT.

Hold down the Fn key and press the key you located in the last step. There is usually a delay of a few seconds and then you'll find something may happen. Usually the external output will be turned on alongside the local (laptop) display. Repeatedly following the last step cycles through all available configuration options, including both on, local on, local off, external on, and external off.
This should fix it. Make sure that the correct input is selected on the projector whilst doing this. It will be labelled on the projector and it should display the same input message on screen.

Make sure that you have enabled the 2nd screen output from the laptop. It sounds like there is no signal at the input of the projector. You can check this by connecting a monitor to the 2nd output of the laptop. Often you have to press one of the function keys (F5 possibly) to enable the 2nd screen from a laptop.

Hi-

Check the ports from the back of your projector, look for an s-video port then check the available ports as well on your computer, so you either use an S-video cable or VGA cable, then when you connect your computer, if its a laptop press fn key then double tap f5 or f7.

keep me posted

Usually means that the computer is not sending a signal out the the projector via the monitor cable. Most Windows based laptop computers allow you to connect to a second monitor by pressing the Fn + F7 or F8 key, once to allow just the projector, twice to allow both the projector and laptop screen and three times back to only the laptop.