Preparing The System To Remove And Replace The Base Function System Backplane - IBM Power System 8247-42L Manual

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Preparing the system to remove and replace the base function system
backplane
Use this procedure to prepare the system to remove and replace the base function system backplane.
Note: It is recommended that a spare TIM and heat sink, (part number 00E8868), be on hand when
replacing the system processor module into the replacement system backplane.
Before you begin this procedure, ensure that you have authority to log in as an authorized service
provider. The authority levels are described in ASMI authority levels.
To remove the base function system backplane, complete the following steps:
1. Identify the part and the system that you will be working on. For instructions, see "Identifying a
part" on page 114.
2. Record the bootlist settings by using the Systems Management Services (SMS).
3. Stop the system or logical partition. For instructions, see "Stopping a system or logical partition" on
page 125.
4. For a rack-mounted system, place the system into the service position. For instructions, see "Placing
the rack-mounted system into the service position" on page 148.
5. 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:
v 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.
v 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.
v 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 once again discharge yourself by touching an unpainted metal surface for at least 5
seconds before you continue with the service process.
6. Remove the service access cover. For instructions, see "Removing the service access cover from a
5148-21L, 5148-22L, 8247-21L, 8247-22L, 8247-42L, 8284-21A, 8284-22A, 8286-41A, or 8286-42A
system" on page 140.
7. Look for the amber LED (D) of the system backplane. See Figure 1 on page 3.
2
System backplane