3Com 3C13840, 3C13880 6.4 Removing/Installing the Main Control Board

3Com Router 6000 Family
Installation Manual
Chapter 6
Maintaining Hardware
3Com Corporation
6-3
Step 3: Pull the entire fan module out after it completely stops rotating.
Caution:
z The fan module is rather long. Use one hand to hold the bottom of the fan while the
other hand grasps the handle on the fan and pull it out slowly.
z Even though you have disconnected the fan module from power supply when
pulling it out, it may still rotate for a while for inertia sake. Be careful and do not put
your finger into the rotating fans.
6.3.2 Installing the Fan Module
Step 1: Hold the handle on the fan module with one hand and the bottom with the other hand.
Slowly insert the fan module into the chassis along the guides until it well touches the
backplane.
Step 2: Fasten the captive screws on the fan module.
Step 3: Power on the router and check that the FAN LED is solid ON.
6.4 Removing/Installing the Main Control Board
Take RPU2 removal and installation for example.
6.4.1 Removing the RPU2
Figure 6-3 Remove the RPU2
Step 1: Turn off the power switch or switches if two PSUs are installed.
Step 2: Loosen the captive screws at both sides of the RPU2.
Step 3: Pull the handles at both side of the RPU2 outward and gently pull the card out
along the guides until it is completely separated from the chassis.