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HP B-series 16Gb FC Switches Hardware Reference Guide

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• If one fan fails, the remaining fans go to high speed to maintain proper cooling until the failed
fan is replaced.
• If a mismatched power supply or fan assembly is installed by mistake, a critical error message
is sent to the console. The message will be similar to the following:
CRITICAL HIL-1611 MISMATCH in PSU/FAN Air Flow direction. Replace
PSU with fan air flows in same direction. System will be shut down
in 2 minutes.
Replacing a power supply
Replacing a power supply in the HP StoreFabric SN6500B 16Gb FC Switch should require less
than two minutes to complete.
The new power supply must have the same part number and airflow indicator as the power supply
you are replacing. See Figure 31 (page 55) for the location of the airflow label.
NOTE: HP only supports the port side exhaust power supply.
Figure 31 HP StoreFabric SN6500B 16Gb FC Switch power supply
2. Grounding screw1. Power supply #2
4. AC input status LED3. Handle
6. Airflow label5. Locking tab
8. Power cord receptacle7. DC output status LED
To replace a power supply in the HP StoreFabric SN6500B 16Gb FC Switch (Figure 32 (page
56)):
1. Verify that the second power supply has been powered on for at least four seconds, and that
the LED is steady green. This ensures the switch remains in service while replacing a power
supply.
2. Unplug the power cord from the power supply that is being replaced.
3. Push the locking tab to the left and hold it there, and use the handle on the power supply to
pull it straight out and away from the chassis. Pull the power supply out slowly to avoid catching
a finger on the locking tab.
4. Slide the new power supply into the chassis until the locking tab engages.
CAUTION:
• Do not force the power supply into the chassis. If the power supply does not slide in
easily, ensure that it is oriented correctly before continuing.
• After replacing the power supply, if the switch powers down after two minutes, it is
probably because the new power supply has a mismatched airflow.
FRU removal and replacement 55