Circuit card installation Page 83 of 894

Keep cards installed in the system as much as possible to avoid dirty contacts and unnecessary wear.

Store cards in a cool, dry, dust-free area.

Figure 15

Static discharge points

 

Module

 

 

rear

 

Wrist strap

 

 

connection point

 

Bare metal strip

Power supply slot

 

 

Wrist strap

Module

Bare metal strip

front

connection point

553-5000

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.

Circuit Card Description and Installation

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Nortel Networks 553-3001-211 manual Static discharge points