Preparing the 5105-22E, 9008-22L, 9009-22A, 9009-22G, 9223-22H, or 9223-22S system to remove and replace the control panel display

To prepare the system to remove and replace a control panel display, 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. The control panel display can be replaced with the system powered on. If you choose to power off the system to complete the repair operation, complete the following steps:
   1. Stop the system. For instructions, see Stopping a system.
3. 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 1.

   

4. Attach the electrostatic discharge (ESD) wrist strap. Your system has an ESD jack 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.