Removing the left-side coverImportant: Before you install optional hardware, make sure that the server isworking correctly. Start the server, and make sure that the operating system starts,if an operating system is installed, or that a 19990305 error code is displayed,indicating that an operating system was not found but the server is otherwiseworking correctly. If the server is not working correctly, see the ProblemDetermination and Service Guide for diagnostic information.Attention: The server automatically powers off when the left-side cover isremoved.To remove the left-side cover, complete the following steps:1. Read the safety information that begins on page vii and “Installation guidelines”on page 37.2. Turn off the server and peripheral devices and disconnect the power cords andall external cables, if necessary.3. Unlock the left-side cover, using the key that comes with the server.4. Pull the cover-release latch down while you rotate the top edge of the coveraway from the server; then, lift the cover off the server.Removing the air baffleNote: When you install the second microprocessor, you must also install fan 2 andthe air baffle that come with the second microprocessor upgrade kit.To remove the air baffle, complete the following steps:1. Read the safety information that begins on page vii and “Installation guidelines”on page 37.2. Turn off the server and peripheral devices, and disconnect the power cords andall external cables.3. Carefully turn the server on its side so that it is lying flat, with the cover facingup.Attention: Do not allow the server to fall over.4. Unlock and remove the left-side cover (see “Removing the left-side cover”).60 IBM System x3500 M4 Type 7383: Installation and User’s Guide
