IBM 86884RX Maintenance Manual - Page 126
Memory-board, voltage, regulator, module
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3. Pull open the memory-board retaining latches, and remove the memory-board assembly. NOTE: FOR PROPER FRONT OF BOX AIRFLOW, NOTE: FOR PROPER AIRFLOW, FRONT OF BOX REPLACE FAN WITHIN 2 MINUTES REPLACE FAN WITHIN 2 MINUTES 4. Set the memory-board assembly on a static-free, clean work surface, and remove the DIMMs and VRMs that will be reused. See "Installing memory" on page 98. 5. Remove the memory board from the memory-board assembly. 6. Install the DIMMs and VRMs that were removed in step 4 into the new board. 7. Reinstall the memory board. 8. Reinstall the memory-board assembly. Note: When you install or remove the memory board, the server configuration information changes. Therefore, you must change and save the new configuration information by using the Configuration/Setup Utility program (see "Starting the Configuration/Setup Utility program" on page 12). Memory-board voltage regulator module (VRM) This section contains instructions for removing and replacing memory-board VRMs. Before you begin: v Read "Installation guidelines" on page 77. v Read the safety notices at "Safety notices (multilingual translations)" on page 201. v Read "Handling static-sensitive devices" on page 200. To remove a voltage regulator module (VRM) from the memory board, complete the following steps: 1. Turn off the server (see "Turning off the server" on page 8), and disconnect all power cords and external cables. 2. Open the DIMM access door that covers the memory-board VRM that you are removing. 116 IBM xSeries 450 Type 8688: Hardware Maintenance Manual and Troubleshooting Guide