Tyan Computer B4881V50S4H Manuel D’Utilisation

The B4881V50S4H has four hot-swap, redundant power sup-
ply bays. 
To replace a power supply:

1. Unplug the power cable from the faulty power supply.
2. Loosen the retaining screw.
3. While pressing the release catch, pull the faulty power 

supply from the chassis using the handle.

4. Push the new power supply into place and secure with 

the retaining screw.

When the CPU expansion board is 
installed, A bare minimum of three power 
supplies are required to run the 
B4881V50S4H. A fourth power supply 
should be installed as soon as possible in 
the event of a failure.

The B4881V50S4H requires three chassis cooling fans.
To replace a cooling fan:

1. Remove the chassis cover. See Removing the chassis 

2. Remove the CPU expansion board as described in