Cable or connection +36 V shorted.

Check / reseat the cable between LDM 2–7 and LCB connector J601.

Defective +36 V driver

Replace the +36V module in the LDM 2. See service procedure "Replacing a Board in a Laser Drive Module".

Defective LCB

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