Removing the DIMM air baffleWhen you work with some optional devices, you must first remove the DIMM airbaffle to access certain components or connectors on the system board. Thefollowing illustration shows how to remove the DIMM air baffle.DIMM air baffle Finger holeRelease ringRiser cardassemblyTo remove the DIMM air baffle, complete the following steps:1. Read the safety information that begins on page vii and “Installation guidelines”on page 28.2. Turn off the server and peripheral devices and disconnect all power cords andexternal cables (see “Turning off the server” on page 13).Attention: In a dc power environment, only trained service personnel otherthan IBM service technicians are authorized to connect or disconnect power tothe dc power supply. See the documentation that comes with each dc powersupply.3. Remove the cover (see “Removing the cover” on page 31).4. Remove the riser-card assembly (see “Removing the riser-card assembly” onpage 32).5. Place your fingers into the handle and opening on the top of the air baffle.6. Press the handle toward the opening and lift the air baffle out of the server.Attention: For proper cooling and airflow, replace the air baffle before youturn on the server. Operating the server with an air baffle removed mightdamage server components.36 System x3650 Type 7979: User’s Guide
