Datasheet

6-22
Cisco PIX Firewall Hardware Installation Guide
78-13880-01
Chapter 6 PIX 525
Installing a DC Power Supply
Step 11 Replace the chassis cover as described in “Replacing the Chassis Cover.”
Rerouting the Fan Wiring
If the fan wiring in your router is not routed on top of the fans, you need to reroute the fan wiring. This
will make future power supply replacement easier.
Complete these steps to reroute the fan wiring:
Step 1 Pull the fan closest to the power supply away from the sheet metal tabs. (See Figure 6-23.)
Note To help with reconnecting the cables, write down which colored cable connects to
which fan. See Table 6-4 for a list of the wire colors. There are three different
lengths of two-wire 12 VDC power cables. The two shortest cables go to the two
fans that you will remove in Step 9. The two longer cables go to the two remaining
fans you will remove in Step 10 and Step 11. The remaining cable goes to the
power connector on the backplane. These cables are color-coded.
Figure 6-23 Pulling the Fan Away from the Tabs
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Chassis bottom
Fan
Fan tabs