Nortel Networks Circuit Card 311 - Manual (Page 66)

66 Circuit card installation
Figure 15
Static discharge points
During repair and maintenance procedures do the following:
• Turn off the circuit breaker or switch for a module power supply before
the power supply is removed or inserted.
• In AC-powered systems, capacitors in the power supply must discharge.
Wait five full minutes between turning off the circuit breaker and
removing the power supply from the module.
• Software disable cards, if applicable, before they are removed or
inserted.
• Hardware disable cards, whenever there is an enable/disable switch,
before they are removed or inserted.
• Return defective or heavily contaminated cards to a repair center. Do
not try to repair or clean them.
Installing a circuit card
This procedure provides detailed installation instructions for circuit cards.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
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