The Input & Communication unit has been reinstalled.

Clear the security warning. See service manual chapter Authorization to clear security warning on DP-1200/DP-1500/DP-2000.

Brief procedure to clear the security warning:

1. Ensure the Input & Communication unit is properly installed.

2. Start up the projector.

3. Initiate authorization by holding the security key in the securitysocket.

4. Enter the pin code within 5 seconds.

The sealed compartment (cover plate of the Light Processor)has been opened.

Clear the security warning. See service manual chapter Authorization to clear security warning on DP-1200/DP-1500/DP-2000.

Brief procedure to clear the security warning:

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

2. Start up the projector.

3. Initiate authorization by holding the security key in the securitysocket.

4. Enter the pin code within 5 seconds.

Defect security switches.

If all compartments and devices are installed and security errorwill not re authorize, replace DCI security switches.

Malfunction Power Backplane

If switch replacement cures nothing then replace power backplane.