>The red warning light on the Processor Module is o f f
>All lights on the Tie Line Module are off
•Module jacks. Check that all module connection are securely seated in the line and station jacks.
•AC power. Check the ac power outlet and make sure that it is working properly and that it is not switch controlled. The outlet should be grounded properly. (Refer to “AC Outlet Tests” on page
proper grounding.) Be sure that the control unit is not on the same electrical circuit with motors or other devices that generate electrical interference.
•Auxiliary power unit. If the system requires this device, make sure that it is installed and working properly. (Refer to “Installing the Auxiliary Power Unit” on page
•System grounding. Verify that the control unit is connected to a proper ground. (Refer to “System Grounding Requirements” on page
•Power outage. If a temporary loss of power has occurred, system administration could have been disrupted. Use a printer to verify that all administration is intact by using the printing all procedure. See page
•Accessory and auxiliary equipment. Disconnect all accessories and auxiliary devices from the system to see if the problem exists there.
•Features. Using the planning forms, verify that each feature has been administered or programmed properly and that the right equipment has been installed to support it. Certain features, such as Simultaneous Voice and Data Calls, require special wiring and programming.
