2. Reinstall the four blowers into the rear of the BladeCenter T unit if you have not
done so already. See “Removing and installing blower modules” on page 54 for
detailed instructions.
Note: The blowers will not start until the power modules are installed.
3. When the power connections are in place, you can reinstall the power modules
in the BladeCenter T unit. After you connect power to the BladeCenter T unit, all
the power-module bays receive power. To start the BladeCenter T unit, install
power modules in all four power-module bays or install power modules in
power-module bays 1 and 2 and filler modules in bays 3 and 4. See “Installing a
power module” on page 48 for detailed instructions.

AC in LED

DC out LED

DC in LED

Error LED

AC power module DC power module

DC out LED
Error LED
Make sure that the LEDs on the power modules indicate that they are operating
correctly. Make sure that the input and output power LEDs on each power
module are lit, and the error LEDs are not lit.
4. Before proceeding, make sure that the LEDs on the blower modules indicate
that they are operating correctly. Make sure that the power LED on each blower
is lit, and the error LEDs are not lit.
5. Make sure that the following BladeCenter T modules are installed correctly. See
“Media tray” on page 11 for the location of the LEDs on these modules.
v Media tray
v KVM module
v LAN module
v Management module
v I/O modules

6. Install the blade servers or filler modules in all of the blade server bays before

you power on any of the blade servers. See “Removing and installing a blade
server or filler module” on page 64 for detailed instructions. Make sure that the
power LED on each blade server is flashing.
7. Install the bezel assembly on the front of the BladeCenter T unit by inserting the
bottom bezel hooks into the bezel slots at the bottom of the BladeCenter T unit.
Push in the bottom and the top of the bezel assembly until they both lock firmly

into place.

20 BladeCenter T Type 8720 and 8730: Hardware Maintenance Manual and Troubleshooting Guide