Nortel 7400 Hardware Installation page 148

148 Chapter 25 Failed function processor replacement
Failed function processor replacement task flow
NN10600-175 6.1S2
• See "Unpacking a processor card" (page 539) for FP and CP handling
instructions.
• Anytime you replace a failed FP with an FP of another vintage, you must
follow the task flow for upgrading an FP.
• When replacing a failed 32-port DS1 or E1 MSA 2-slot FP with an
equivalent 1-slot FP, follow "Function processor upgrade" (page 163).
Refer to the tables of DS1 and E1 compatible replacements of 1-slot and
2-slot FPs in NN10600-170 Nortel Networks Multiservice Switch 7400
Hardware Description.
• When replacing a 2-slot FP that has optical ports with a 1-slot FP, do this
kind of task by following "Function processor upgrade" (page 163). The
only difference in functionality between an MSA 1-slot and 2-slot FP of
the same interface type (DS1 or E1) is whether the FP has optical ports.
The 1-slot FPs do not have optical ports. You may need to alter the slot
configuration.
• Alarm 7054 0100 is generated when at least one cable is disconnected at
an FP or at its next equipment connection (an FP, termination panel, or
sparing panel).
• When an FP is installed in a slot that is configured for a different card
type, the FP does not operate and its status LED shows solid amber. If a
replaced FP shows solid amber, use the procedure for comparing the card
type of an inserted card and its configured slot in NN10600-550 Nortel
Networks Multiservice Switch 7400/15000/20000 Common
Configuration Procedures.
• Some of the procedures in this task are not located in this document.
Ensure that you have access to the required documents.
This task flow shows you the sequence of procedures you do to replace a
failed FP. To link to any procedure, go to "Task flow navigation" (page 149).