Bad wiring connection

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

Defective +24V module LDM

Replace the +24V module in the LDM (LDM slot 7). See service procedure "Replacing a Laser Drive Module".

Malfunction LCB.

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