Alarms, Errors, and Troubleshooting
5-1Safety Precautions
5
DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
5
Alarms, Errors, and Troubleshooting
Safety Precautions
By observing the prescribed safety precautions when working on the system, you
can avoid unnecessary disruption of service and damage to the equipment. The
items on this list should be a regular part of your routine.
!
WARNING:
Failure to comply with these procedures can have catastrophic effects on
system service and hardware. Read the explanations following the list to
ensure a complete understanding of these necessary procedures.
■ Whenever touching any component inside the cabinet, ground yourself by
means of the wrist strap attached to the cabinet, and avoid sources of
static electricity.
■ When logging on with the terminal, be aware that INADS alarm notification
is normally disabled. Log off the terminal when leaving the system.
■ Think carefully before moving SPE-SELECT switches. Always set them one
at a time to the letter of the PPN control carrier that is
currently active
(unless a procedure specifically tells you to do otherwise).
■ Never “hot plug” an SPE circuit pack, except for the tape and disk drives
on a simplex SPE. Lock and power down the PPN control carrier first.
■ Do
not
power down switch node or port carriers to replace a board.
■ Handle fiber optic cables with care. Bending, piercing, or cutting the
cable can sever communications between major subsystems.
■ When disconnecting fiber optic cables, grasp of both the lightwave
transceiver and the cable connector.
