NETWORK 8000 ISSUE: faceplate resetting when output stations activate

IMPORTANT: Any time you install or remove components, disconnect power to the unit before you begin. "Hot Plugging" components in this manner can cause even further damage to one or more cabinet components.

To power down a Network 8000 cabinet, remove one of the two main fuses located towards the bottom inside of the cabinet.

This is usually caused by a bad power supply, but can be caused by a failing faceplate as well.

Check the Power Supply voltages, paying particular attention to the voltage on pin 6. Voltage testing instructions can be found HERE.
If the Power Supply is known to be good then try replacing the faceplate with a known good unit.
If the problem is still present then try replacing the harness that connects the Power Supply to the Faceplate with a known good unit.