IBM 87302RU, Hardware Maintenance Manual

Page: 87 / 180

Rear chassis stiffener bracket
Complete the following steps to replace the rear chassis stiffner bracket.
Note:
v
Read “Installation guidelines” on page 37.
v
Read the safety notices at
″
Safety information
″
on page 113.
v Read “Handling static-sensitive devices” on page 40.
1. Shut down the system and remove power from the system (see “Shutting
down the BladeCenter T unit” on page 21).
2. For Type 8720 (dc) systems, remove the dc terminal covers and power
connections to each of the dc terminals. For Type 8730 (ac) systems, remove
each power cord from the input power connections on the rear of the
BladeCenter T unit.
3. Remove the power modules from the bays at the front of the unit.
Note: The power modules dock into the docking board on the assembly and
must be removed before you can remove the assembly.
4. Remove the KVM module from the rear of the system (see “Removing the
KVM module” on page 57).
5. Remove the LAN module from the rear of the system (see “Removing the LAN
module” on page 59).
6. Remove all I/O switches and switch fillers from the rear of the unit.
7. For a Type 8720 unit, remove the dc rear panel from the rear of the unit (see
“DC Rear Panel” on page 70). For a Type 8730 unit, remove the ac rear panel
from the rear of the unit (see “AC rear panel” on page 69).
8. Remove the two upper flex circuit assemblies (see “Upper flex circuit
assembly” on page 71) and the two lower flex circuit assemblies (see “Lower
flex circuit assembly” on page 72).
9. Loosen the four captive fasteners on the old rear chassis stiffner bracket.
Chapter 5. Service replaceable units
77