Code 5643: “lamp power supplies - communication failed with at least one lamp power supply” (Error)

Situation

Solution

Main power cable disconnected from one of the LPS units (reference 1image "Mains and CTLB connection LPS").

Check if the main power cable is connected with the “MAINS INPUT” socket of the LPS unit.

Malfunction of one of the LPS units. The red LED “ERR” of the malfunction LPS unit flashes fast.

Replace the whole LPS module. See "Lamp power supply" or "Lamp power supply (single module)".
LPS connections

Mains and CTLB connection LPS