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Multiservice Switch 7400 Hardware Installation, Maintenance, and Upgrade 6.1S2
Chapter 2
Multiservice Switch 7420 replacement
Replace a Nortel Networks Multiservice Switch 7420 if a non-replaceable
component fails, for example, a fan failure or a failed power supply.
• “Prerequisites to Multiservice Switch 7420 replacement” (page 39)
• “Multiservice Switch 7420 replacement task flow” (page 40)
Prerequisites to Multiservice Switch 7420 replacement
CAUTION
Service loss due to outage
Replacing a device removes it from service for the
duration of the replacement. Minimize the impact of the
outage by rerouting traffic to other nodes in the network
before powering down the device.
CAUTION
Risk of electrostatic damage
When handling processor cards, wear a grounded
antistatic wrist strap so that you do not damage electronic
parts. For more information, see
“Avoiding damage from
static electricity” (page 208).
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