IBM BladeCenter HT 8740, Problem Determination And Service Manual

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Removing the midplane
To remove the midplane, complete the following steps.
1. Read the safety information that begins on page vii and “Installation guidelines”
on page 31.
2. Shut down the operating systems and turn off any blade servers in the
BladeCenter HT unit. See the documentation that comes with the blade server
for detailed instructions.
3. Disconnect the power from the BladeCenter HT unit (see “Disconnecting power
from the BladeCenter HT unit” on page 11).
4. Remove the following components from the front of the BladeCenter HT unit.
v
I/O modules: Pull the handle on each I/O module or filler to the open
position and remove the module or filler (see “Removing an I/O module” on
page 64).
v High-speed I/O modules: Pull the two release handles on each high-speed
I/O module or filler to the open position and remove the module or filler (see
“Removing a high-speed I/O module” on page 71).
v
Management modules: Pull the handle on each management module or filler
to the open position and remove the module or filler (see “Removing a
high-speed I/O module” on page 71).
5. Disengage the following components from the BladeCenter HT midplane using
the procedure indicated:
Note: Make sure each component is pulled out of the BladeCenter HT unit at
least 2.54 cm (1 inch).
v Blade servers: Pull the two release handles on each blade server to the
open position (see “Removing a blade server” on page 60).
v
Power modules: Pull the handle on each power module or filler to the open
position (see “Removing a power module” on page 55).
v
Media tray: Pull the handle on each media tray or filler to the open position
(see “Removing a media tray” on page 51).
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BladeCenter HT Type 8740 and 8750: Problem Determination and Service Guide