IBM 4002AC2, Installation And User Manual

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3. Gently insert the cable connector or connectors (a tab on each connector
should face upward) into the port connector or connectors until the tabs lock
into place.
4. Observe the link and active LEDs to determine if the network connections are
functioning properly. For more information about the LED indicators, refer to
Table 8 on page 25.
Cleaning the fiber-optic connectors
To avoid problems with the connection between the fiber optic module (SFP+ or
SFP) and the fiber cable connectors, both connectors should be cleaned thoroughly
each time you disconnect and reconnect them. In particular, dust can accumulate in
the connectors and cause problems such as reducing the optic launch power.
When not using an SFP+ or SFP connector, make sure to keep the protective
covering on.
Replacing a power supply
You can replace a power supply while the B24X is powered on and running (if two
power supplies are installed). The power supplies are located in slots at the rear of
the B24X.
This section provides information about the following topics:
v Installation precautions and warnings
v Determining which power supply failed
v Replacing a power supply
CAUTION:
Power supplies are hot swappable. However, IBM recommends that you
disconnect the power supply from AC power before installing or removing the
supply. The device can be running while a power supply is being installed or
removed, but the power supply itself should not be connected to a power
source. Otherwise, you could be injured or the power supply or other parts of
the device could be damaged.
Installation precautions and warnings
Attention: Before beginning the installation, refer to the precautions in “Safety
notices” on page xi.
Determining which power supply failed
If you are replacing a power supply that has failed and you are not sure which
supply has failed, enter the following command at any CLI command prompt:
TurboIron#show chassis
Power supply 1 (NA - NA - Regular) present, status ok
Power supply 2 not present
Fan 1 ok, speed (auto): [[1]]<->2<->3
Fan 2 ok, speed (auto): [[1]]<->2<->3
Fan 3 ok, speed (auto): [[1]]<->2<->3
Fan controlled temperature: 0.0 deg-C
Fan speed switching temperature thresholds:
Speed 1: NM<----->30 deg-C
Speed 2: 25<----->40 deg-C
Speed 3: 35<----->90 deg-C (shutdown)
Boot Prom MAC: 0011.1122.2233
TurboIron#
Chapter 5. Maintaining the B24X Hardware
33