IBM AA-RWF3A-TE - Manual (Page 106)

Replacing the 4/32B SAN Switch Power Supply/Fan
Assembly Unit
Read this section for Power Supply/Fan Assembly Unit replacement procedures.
Power Supply/Fan Assembly overview
The 4/32B SAN Switch fans are fixed inside the integrated power supply/fan FRU
to provide necessary airflow to cool the whole system. There is one fan located in
the rear section of each FRU. The system software sets fan speed and measures their
speeds through the tachometer interface.
The two power supply/fan assembly FRU units are hot-swappable if replaced one at a
time. They are identical and fit into either slot. Fabric OS identifies the power supplies
from left to right on the port side as PS1 (on the left) and PS2 (on the right).
The Fabric OS identifies the Power Supplies as follows (viewing the switch from the
port side):
• PS1 on the left
• PS2 on the right
Figure 37 identifies Power Supply/Fan Assembly Unit components.
25275a
1
2
3
4
5 6
1. Power Supply/Fan Assembly Unit 2. AC power switch
3. Status LED 4. Captive screw
5. Power cord inlet 6. Power cord retainer
Figure 37 4/32B SAN Switch Power Supply/Fan Assembly Unit
106 Installing field-replaceable units