Removing the 8204-E8A or 9409-M50 system processor assembly

Learn how to remove the system processor assembly.

1. Perform the prerequisite tasks listed in Before you begin.
2. If necessary, identify the system processor assembly that you need to replace. For instructions, see Identifying a failing part.
3. Stop the system or logical partition. For instructions, see Stopping the system or logical partition.
4. If you have a rack-mounted system, place it in the service position. For instructions, see Placing a rack-mounted model 8203-E4A, 8204-E8A, 9407-M15, 9408-M25, or 9409-M50 in the service position.
5. Remove the service access cover. For instructions, see Removing the service access cover from a rack-mounted model 8203-E4A, 8204-E8A, 9407-M15, 9408-M25, or 9409-M50 or Removing the service access cover from a stand-alone model 8203-E4A, 8204-E8A, 9407-M15, 9408-M25, or 9409-M50.
   Attention:

   • Attach a wrist strap to an unpainted metal surface of your hardware to prevent electrostatic discharge (ESD) from damaging your hardware.
   • When using a wrist strap, follow all electrical safety procedures. A wrist strap is 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 a 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.
6. Disconnect the power cables from the primary power supply and secondary power supply if present.
7. As shown in Figure 1 and Figure 2, unlock the latches (A) on the system processor assembly. Using both hands, grasp the unlocked latches (B) to pull the system processor assembly (C) through the guide rails away from the system backplane assembly.
   Figure 1. Removing system processor assembly from the backplane assembly in a rack-mounted model

   
   Figure 2. Removing system processor assembly from the backplane assembly in a stand-alone model

   
8. Place the system processor assembly on an acceptable ESD surface.
9. Remove the cover from the system processor assembly. Use the instructions for the figure that matches your cover to remove the cover from the system processor.
   • If you have the flat cover shown in Figure 3, loosen the two screws (A), slide the cover (B) away from the sheet metal flange (C), and remove.
     Figure 3. Removing the flat cover from the system processor

     
   • If you have the cover shown in Figure 4, push in tab (A), slide the cover (B) to the right, and remove.
     Figure 4. Removing the cover from the system processor

     
10. If necessary, remove the memory modules to reinstall them in the new system processor assembly. For instructions, see Memory modules.