How to unlock keypad for infocus in116 projector?

http://www.projectorcentral.com/pdf/projector_manual_6367.pdf

It might be a problem with the circuit that powers the lamp. That's the Lamp Driver circuit.

Alternatively, maybe you ddin't put the door back on rioght.

With the power on, press and hold the brightness up and brightness down keys on the projector keypad at the same time for 10 full seconds.

I made the same mistake. The solution was to update the firmware. After the update, all settings were set to default---including enabling the projector's keypad.

To reset the lamp age, simultaneously hold down the two Brightness buttons
on the projector's keypad for 10 seconds

If your not getting any led's on the keypad then looks like your going to need the power supply replaced or repaired.

A couple of possibilities...

Connect a separate monitor to your laptop and verify that your laptop's external monitor port is functioning properly.
If yes, connect and power up the LP120. Press the source key on keypad. You should see the projector switch from video to computer.
Last option, does the projector display an "out of range" message on the screen. If so, reduce your laptop resolution to 1024 x x768.

Hi,
Yes, you can lower the volume on the projector without the remote by using the keypad on top of the projector..... For more details click here and look pg: 25 and 28
Thanks for using fixya....

try turning the projector on and wait for one minute. On the projector keypad, press and hold the Volume + and Volume - keys for ten seconds.

the same functions should be able to be accessed via the remote as well as the keypad on the projector. press "menu", settings, system and de-select "rear" or "ceiling" whichever is causing the "inverted" image