Remove the model 9116-561 or 570 system backplane

Prepare the system

Perform prerequisite tasks as described in Before you begin.
Identify the system backplane assembly that you need to remove. For instructions, see Identify a failing part.
Stop the system. For instructions, see Stop the system or logical partition.
Disconnect the power source from the system by unplugging the system.
Note: This system is equipped with a second power supply. Before continuing with this procedure, ensure that all power sources to the system have been completely disconnected.

(L003)

or
Remove the front cover. For instructions, see Remove the front cover from the model 9116-561 or 570.
Attention:
- Attach a wrist strap to an unpainted metal surface of your hardware to prevent electrostatic discharge 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.
Remove the SMP cable, if present, from the front of the processor. For instructions, see Remove the model 9116-561 or 570 SMP processor cable.
Remove the control panel. For instructions, see Model 9116-561 or 570 control panel.
Remove the voltage regulator modules. Record the location of each voltage regulator module being removed. For instructions, see Remove the model 9116-561 or 570 voltage regulator card assembly.

Remove the system backplane

Locate the blue handle, which is below the processor assembly.
Attention: The system backplane assembly is of substantial weight and should not be pulled out using the blue lever. Grasp the system backplane assembly firmly with both hands when it is free of the system.
As shown in the following figure, push the blue lever A to the left and out from the system to unlock the system backplane assembly, and then pull the system backplane assembly out of the system using both hands B.
Figure 1. Slide the model 9116-561 or 570 system backplane assembly out of the system unit
If you are removing the system backplane as a part of another procedure, return to that procedure. If you are removing the system backplane because it is damaged or failing to operate correctly, continue to the next step.
As shown in the following figure, pull out on the locking knobs A until you feel them unlock. Push the locking arms B down and out to unlock the processor assembly, and then lift it out of the system backplane assembly C. Remove all processor assemblies (or fillers) from the system backplane assembly.
Tip: Record the location of each processor assembly being removed for use during reinstallation.

Figure 2. Remove the processor assembly from model 9116-561 or 570 backplane assembly
Place the processor assembly on a surface that is safe from electrostatic discharge.
Replace the system backplane. For instructions, see Replace the model 9116-561 or 570 system backplane.