3.8 How to Replace the NVRAM/TOD Module

3.8.1 Before You Begin

Complete this task:

• "2.8 How to Avoid Electrostatic Discharge"

If you are installing a new NVRAM/TOD module, the NVRAM/TOD must be programmed by a Sun authorized service representative before your system can resume normal operation. If you are installing a new main logic board, remember that you can migrate your former NVRAM/TOD module in order to preserve your system's host ID and Ethernet address.

For information about setting the flash PROM jumpers to enable you to program the NVRAM, see "3.16 How to Set the Flash PROM Jumpers".

3.8.2 What to Do

1. Insert the NVRAM/TOD module and its carrier into its socket on the main logic board.

   The carrier is keyed to ensure correct installation of the NVRAM/TOD module into its socket on the main logic board. Make sure that the NVRAM/TOD module is placed into its carrier correctly. The small marker dot on the top of the NVRAM/TOD module should be on the same side as the narrow tab on the carrier assembly.

   

2. Push down firmly on the NVRAM/TOD module until it seats in its socket.

3.8.3 What Next

Complete the following task to reassemble the system:

• "2.7 How to Replace the System Cover"

When you are ready to restart the system, be sure to run OpenBoot Diagnostics tests to verify that the system functions correctly with the new part you have just installed. For additional information, see:

• "7.6 How to Use OpenBoot Diagnostics (OBDiag)"