Nortel Passport 7400, Hardware Installation, Maintenance, And Troubleshooting, Page: 124 / 438

124 Chapter 24 Function processor addition
241-7401-240 5.2S1
• If a 16-slot Passport switch does not have redundant power supplies,
ensure that the switch power supply is sufficient to support the additional
FP(s). For more information, see the table “16-slot Passport switch
minimum power supply requirements” (page 356).
CAUTION
Risk of service loss by inadequate power
Two power supplies must be installed before inserting an
MSA32 function processor. There is a risk of a shelf
reset when installing an MSA32 FP in a shelf with only
a single power supply.
This risk does not apply if the MSA32 is already
installed and one of two power supplies fails.
CAUTION
Risk of equipment damage from software
An incompatible software load can damage an FP
beyond a field repair. Ensure that the software running
on the switch meets the minimum software requirement
for an FP. For more information, see 241-5701-615
Passport 7400, 15000, 20000 FP Configuration
Reference.
CAUTION
Risk of service loss
Whenever you install an FP that uses a control cable, in
a sparing configuration, you must always insert the FP
into a slot on the shelf before you connect the control
cable. If you connect the control cable between the FP
and the termination or sparing panel before you insert
the FP in the shelf, you can disrupt service to the other
FP(s) in the sparing configuration.