Bad wiring connection

Check connector J900 on the LCB and LDM 2. Make sure the cable is properly seated. If problem persists, replace the cable.

Defective +24V module

Replace the +24V module in LDM 2 (slot 5). See service procedure "Replacing the +24V module".

Malfunction LCB.

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