Sun Microsystems 220R service manual How to Remove the NVRAM/TOD Module, What Next

6.Simultaneously push both levers toward the center of the CPU module until the CPU module seats in its connector.

3.6.3What Next

4Complete this task to reassemble the system:

Section 2.7 “How to Replace the System Cover” on page 67

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 parts you have just installed.4 For additional information, see:

Section 7.6 “How to Use OpenBoot Diagnostics (OBDiag)” on page 195

3.7How to Remove the NVRAM/TOD Module

3.7.1Before You Begin

Complete these tasks:

Section 2.1 “How to Power Off the System” on page 54

Section 2.4 “How to Position the System for Service” on page 60

4Section 2.6 “How to Remove the System Cover” on page 65 Section 2.8 “How to Avoid Electrostatic Discharge” on page 69

The non-volatile random access memory/time of day (NVRAM/TOD) module contains the system host identification (ID) and Ethernet address. You may be migrating a functioning NVRAM/TOD module to a new main logic board in order to preserve host ID information. However, if you are replacing a defective NVRAM/ TOD module and want to retain the same host ID, consult your authorized Sun sales representative or service provider.

3.7.2What to Do

1.Locate the NVRAM/TOD module and its carrier on the main logic board.

2.Grasp the NVRAM/TOD carrier assembly at each end and pull straight up.

If necessary, gently rock the NVRAM/TOD from side to side to facilitate removal.

106 Sun Enterprise 220R Server Service Manual ♦ January 2000, Revision A