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> The red warning light on the Processor Module is
off
> 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
2-7
to verify
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 2-72 for instructions.)
•
System grounding.
Verify that the control unit is
connected to a proper ground. (Refer to “System
Grounding Requirements” on page 2-5.)
•
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 3-89 for Display Console
administration or page 3-106 for BIS-34D Console
administration.
•
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.
4-6 Basic Troubleshooting Procedures