Bad wiring connection

Check connector J901 on the LCB and the Power board (LDM2–7). Make sure the cable is properly seated. If problem persists, replace the cable.

Defective +36V module LPM

Replace the Power module in the LDM2–7. See service procedure "Replacing a Board in a Laser Drive Module".

Malfunction LCB.

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