Network problem between LCB and CCB.

1. Check network connection on the LCB (reference 9 image).

2. Check network connection on the Signal Backplane (reference 9 image).

3. Check if the network cable is function properly. If not replace the network cable.

4. Reseat the CCB.

Malfunction Signal Backplane

Inspect the Signal Backplane for bad or burned traces. If so, replace the Signal Backplane. See service procedure "Replacement process of the Signal Backplane".

LCB has no power

Measure voltage on the LCB power input connector J300 pin 7 (image).

If not +12V check for LCB power supply error/warnings ant resolve these first.

Malfunction LCB

Replace the LCB. See service procedure "Replacement of the Laser Control Board (LCB)".

Malfunction CCB

Replace the CCB. See service procedure "Replacement of the Cinema Controller".