DOLBY CP 500, Sound Processor For Cinemas

Purchased this to use with a 35MM projector but never got it running. System powers on good but shows a message that there is a problem with a module. The screen on the front has horizontal lines through it but you can still see everything.

This cp has the following cards in it,

- 684 - system controller

- 682 - analog out

- 661 - optical preamp

- 222SR/A

- 681 - analog switch 2CH ADC

- 662 - 6CH DAC

- 675A - matrix decoder

- 675A - equalizer

- 671 - video processor

- 673 - system services

- 675A - AC-3 decoder

The last three have their fault lights on but I’m not sure why.