• Optima MR450w BASE 1.5T System Service Methods
  • 5690012-2EN Revision 3
  • Object ID: 00000018WIA30E1E030GYZ
  • Topic ID: id_12373505 Version: 1.2
  • Date: Jul 5, 2019 10:03:33 PM

HP 8400 Ethernet Switch Replacement

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not Applicable15 minutes5 minutes
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Standard Screwdriver1---
Table 3. Safety

Procedure

  1. Close the application software on the host computer. Perform LOTO on the power sources. See the MR Service Safety Manual, PN 5452735.
  2. Remove the three screws at the rear of the GOC that secure the right side panel.
    Figure 1. Removing Screws
  3. Remove the right panel of the GOC, and disconnect the ground lead that connects the cover to the main chassis.
    Note:

    Avoid straining the short ground lead.

  4. Disconnect the power cord from the Ethernet switch.
  5. Remove all cables connected to the Ethernet switch, and make a note of the labeling for reconnection.
    Figure 2. Removing Cables
  6. Loosen the strap that secures the Ethernet switch (shown above) and carefully remove it.
  7. Install the replacement Ethernet switch by reversing the above steps.

Finalization

  1. Restore power to the GOC and reboot the computer.
  2. Perform a test scan to ensure proper operation.