Preparing the 9009-41A, 9009-41G, 9009-42A, 9009-42G, 9223-42H, or 9223-42S system to remove and replace the control panel

To prepare the system to remove and replace a control panel, complete the steps in this procedure.

1. Identify the part and the system that you are working on. For instructions, see Identifying a part.
   Use the blue identify LED on the enclosure to locate the system. Ensure that the serial number of the system matches the serial number to be serviced.
2. Stop the system. For instructions, see Stopping a system.
3. Label and disconnect the power cords from the system unit.
   See Figure 1 or Figure 2.

   Notes:

   • This system might be equipped with two or more power supplies. If the removing and replacing procedures require the system power to be turned off, ensure that all the power sources to the system are disconnected.
   • The power cord (B) is fastened to the system with hook-and-loop fastener (A). If you are placing the system in a service position after you disconnect the power cords, ensure that you unstrap the fastener.

   

   

   (L003)

   

   or

   

   or

   

   or

   

   or

   

   

   

   DANGER

   Multiple power cords. The product might be equipped with multiple AC power cords or multiple DC power cables. To remove all hazardous voltages, disconnect all power cords and power cables. (L003)
4. For a rack-mounted system, remove the front cover by pulling it away from the system.
   The cover has indentations (A) where you can hold it more easily. See Figure 3.

   

5. For a stand-alone system, remove the front cover and door by completing these steps.
   1. Insert the front door key into the lock as shown in Figure 4. Twist the key to the left (counterclockwise) to unlock the door. Horizontal is locked; vertical is unlocked. Open the front door.

      

   2. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged into a ground jack or connected to an unpainted metal surface. If not, do so now.
   3. Twist the cover latch to the left (counterclockwise) to unlock the cover as shown in Figure 5.
      Vertical is locked; horizontal is unlocked.

      

   4. Pull the cover away from the system as shown in Figure 6.
      The cover has an indentation where you can hold onto it more easily.

      

6. For a rack-mounted system, open the side latches (A) and pull the latches to slide the system unit fully into the service position until the slides click and hold the system unit securely. Ensure that the screws inside the latches are not secured to the rack.
   See the following figure.

   Remove the hook-and-loop fasteners that secure the cable management arms. Ensure that the cable management arms can move freely. Ensure that the cables at the rear of the system do not catch or bind as you pull the system unit into the service position.

   Do not pull out or install any drawer or feature if the rack stabilizer brackets are not attached to the rack. Do not pull out more than one drawer at a time. The rack might become unstable if you pull out more than one drawer at a time.

   

   

7. Attach the electrostatic discharge (ESD) wrist strap. Your system has ESD jacks on the front and on the rear of the system as shown in the following figure. Plug the ESD wrist strap into the ESD jack.
   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.

   

8. Remove the service access cover.
   For a rack-mounted system, complete the following steps. Refer to Figure 9.

   Attention: Operating the system without the service access cover on for more than 10 minutes when the system power is turned on might damage the system components.

   1. Release the service cover latch by pushing the release latch (A) in the direction shown.
   2. Slide the cover (B) off the system unit. When the front of the service access cover clears the upper frame ledge, lift the cover up and off the system unit.

   

   For a stand-alone system, complete the following steps. Refer to Figure 10.

   Attention: Operating the system without the service access cover on for more than 10 minutes when the system power is turned on might damage the system components.

   1. Release the latch by pushing the release latch (A) in the direction shown.
   2. Slide the cover (B) off the system unit. When the front of the service access cover has cleared the upper frame ledge, lift the cover up and off the system unit.

   

9. Press and hold the push-button (A) on the trusted platform module card to activate the identify LED for the faulty part as shown in the following figure.
   Verify that the LED (B) is lit, which indicates that sufficient power exists for the identify LED. If the LED (B) is not lit, use the location code to find the physical location by using the service label.

   

10. Look for the amber fault LED (A) to identify the failed control panel as shown in Figure 12 and Figure 13.