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Removing and replacing the BMC card in the 8335-GTC, 8335-GTG, 8335-
GTH, 8335-GTW, or 8335-GTX
Learn how to remove and replace the baseboard management card (BMC) in the IBM Power
AC922 (8335-GTC, 8335-GTG, and 8335-GTH) or IBM Power System AC922 (8335-GTW and 8335-GTX)
system.
Removing the BMC card from the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-
GTX system
To remove a the baseboard management card (BMC), complete the steps in this procedure.
Before you begin
Record the network settings. For instructions, see Network settings (www.ibm.com/support/
knowledgecenter/POWER9/p9eih/p9eih_openbmc_networksetting.htm).
Power off the system and place it in the service position. For instructions, see "Preparing the 8335-GTC,
8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system to remove and replace internal parts" on page
198.
Procedure
1. 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.
2. If needed, label and remove the cables from the BMC card.
3. To remove the BMC card, follow these steps as shown in Figure 1 on page 4.
a) Remove the four screws that secure the rear of the card to the chassis at (A).
b) Slide the release latch at (B) away from the BMC card, then rotate the latch towards the front of the
system to release and lift the BMC card from the system backplane.
c) Using the blue tab at (C) and the handle (B), lift the BMC card out of the chassis.
Removing and replacing parts in the 8335-GTW or 8335-GTX 3
®
System
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