IBM N7800 Hardware And Service Manual page 143

Is the RLM configured?
Yes
No
6. If you are not already grounded, properly ground yourself.
7. Unplug both power cords from the impaired node.
Removing cables and media adapters from the NVRAM adapter
Before you remove the old NVRAM adapter from the controller module, you must
remove the cables and, if you are using fiber interconnect cables, the media
adapters.
Procedure
1. If you are not already grounded, properly ground yourself.
2. Remove the cables and any media converters (SFPs) from the NVRAM adapter.
If your system uses...
Fiber interconnect cables
Leave the cables in the cable clips of the cable management tray so that when
you reinstall the cable management tray, the cables are already aligned.
Use this method to disconnect the cables...
Remove each media converter by pulling the handle so that the latches open, and
then gently remove the media converter from the NVRAM adapter port, as shown in
the following illustration:
Sheath
Fiber cable
Then...
Log in to the impaired node's RLM and
issue the following command:
system power off
Manually shut down the power supplies on
the impaired node.
Media
converter
Handle
MPO connector
Chapter 5. Replacing N7000 series system devices
L O
1 P
H 1
L O
2 P
H 2
N V
R A
M 5
Copper
IB ports
117