Removing The Fan Module; Installing The Fan Module; Removing/Installing The Mpuf - 3Com MSR 50-40 ROUTER. Installation Manual

Removing the Fan Module

Figure 6-5 Remove a fan module
Step 1: Loosen the two captive screws on the fan module.
Step 2: Hold the handle on the fan module with one hand and its bottom with the other hand. Pull part of
the fan module out.
Step 3: Pull the entire fan module out after it completely stops rotating.
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.
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.

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.

Removing/Installing the MPUF

Take MPUF removal and installation for example.
6-4