Removing The System Backplane - IBM 7063-CR2 Manual

Removing the system backplane from the 7063-CR2 system
To remove the system backplane from the IBM Power Systems HMC (7063-CR2) system, complete the
steps in this procedure.
About this task
You can use a magnetic tip screwdriver to remove and replace the screws.
As part of the system backplane replacement, the system processor modules are moved from the old
system backplane to the new system backplane.
Procedure
1. Power off the system.
For instructions, see "Stopping the 7063-CR2 system" on page 99.
2. Attach the electrostatic discharge (ESD) wrist strap.
The ESD wrist strap must be connected to an unpainted metal surface until the service procedure is
completed, and if applicable, until the service access cover is replaced.
Attention:
• Attach an electrostatic discharge (ESD) wrist strap to the front ESD jack, to the rear ESD jack,
or to an unpainted metal surface of your hardware to prevent the electrostatic discharge from
damaging your hardware.
• When you use an ESD wrist strap, follow all electrical safety procedures. An ESD wrist strap
is used for static control. It does not increase or decrease your risk of receiving electric shock
when using or working on electrical equipment.
• If you do not have an ESD wrist strap, just prior to removing the product from ESD packaging
and installing or replacing hardware, touch an unpainted metal surface of the system for a
minimum of 5 seconds. If at any point in this service process you move away from the system,
it is important to again discharge yourself by touching an unpainted metal surface for at least
5 seconds before you continue with the service process.
3. Remove the system backplane from the rear of the system.
a) Label and remove the two power cables.
For instructions, see "Disconnecting the power cords from a 7063-CR2 system" on page 100.
b) Label and remove the signal cables from the rear of the system.
c) Loosen the two screws (A) on the sides of the system backplane as shown in the following figure.
Figure 70. Removing the system backplane screws
d) Simultaneously rotate the two levers (A) on each side of the system backplane out and to the side
to unlock the system backplane from the system.
54 Power Systems: Servicing the IBM Power Systems HMC (7063-CR2)