HP ProLiant BL420c HP ProLiant BL420c Gen8 Server Blade Maintenance and Servic - Page 47
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3. Align and install the heatsink. Alternate tightening the screws until the heatsink is seated properly. 4. Install the SAS controller, if removed ("SAS controller" on page 28). 5. Install the access panel ("Access panel" on page 25). Processor WARNING: To reduce the risk of personal injury from hot surfaces, allow the drives and the internal system components to cool before touching them. CAUTION: To prevent possible server malfunction, do not mix processors of different speeds or cache sizes. Refer to the label on the processor heatsink for a description of the processor. CAUTION: To prevent possible server blade overheating, always populate each processor socket with a processor socket cover and a heatsink blank or a processor and a heatsink. IMPORTANT: Processor socket 1 must always be populated. If processor socket 1 is empty, the server blade does not power up. To remove the component: 1. Update the system ROM. Locate and download the latest ROM version from the HP website (http://www.hp.com/support). Follow the instructions on the website to update the system ROM. 2. Power down the server blade (on page 23). 3. Remove the server blade (on page 24). 4. Remove the access panel ("Access panel" on page 25). 5. If removing the processor from processor socket 2, remove the SAS controller ("SAS controller" on page 28). 6. Remove the heatsink ("Heatsink" on page 45). Removal and replacement procedures 47