The ICP and/or link decryptor have been removed and inserted again.

You need to marry both. Start the clear security warning procedure. See service manual chapter "Authorization to clear security warning on the projector".

Brief procedure to clear the security warning:

1. Ensure the top cover plate of the Light Processor compartment is properly installed.

2. Ensure the side cover plate of the Light Processor compartment is properly installed.

3. Ensure that all modules are properly installed into the Card Cage.

4. Start up the projector.

5. Initiate authorization by pushing the Key button on the Local Keypad.

6. Enter the pin code within 5 seconds.