In combination with +24V errors: Bad wiring connection

Check connector J900 on the LCB and the LDM (slot 7). Make sure the cable is properly seated. If problem persists, replace the cable.

In combination with +24V errors: Defective +24V module

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

This error alone, or in combination with other LCB-related errors: Malfunction LCB.

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