b. In the location from which you removed the failed fan, route the fan cableinto its slot in the fan bracket top.c. Insert the fan into the bracket.d. Make sure that each of the blue soft tabs on the fan is fully seated in its slotin the fan bracket.3. Connect the replacement fan cable to the system board.4. Install the cover (see “Installing the cover” on page 69).5. Slide the server into the rack.6. Reconnect all external cables and the power cord.7. Turn on all attached devices and the server.Removing and replacing Tier 2 CRUsYou may install a Tier 2 CRU yourself or request IBM to install it, at no additionalcharge, under the type of warranty service that is designated for your server.The illustrations in this document might differ slightly from your hardware.Removing the batteryTo remove the battery, complete the following steps:1. Read the safety information that begins on page vii and “Installation guidelines”on page 65.2. Turn off the server and peripheral devices, and disconnect the power cords andall external cables necessary to replace the device.3. Remove the cover (see “Removing the cover” on page 68).4. If necessary, lift the riser-card assembly out of the way (see “Removing theriser-card assembly” on page 88).5. Remove the battery:a. Use a fingernail to press the top of the battery clip away from the battery.The battery pops up when released.b. Use your thumb and index finger to lift the battery from the socket.6. Dispose of the battery as required by local ordinances or regulations. See“Battery return program” on page 116 for more information.Installing the batteryThe following notes describe information that you must consider when you replacethe battery in the server.v When replacing the battery, you must replace it with a lithium battery of the sametype from the same manufacturer.v To order replacement batteries, call 1-800-426-7378 within the United States, and1-800-465-7999 or 1-800-465-6666 within Canada. Outside the U.S. andCanada, call your IBM marketing representative or authorized reseller.82 IBM System x3250 Types 4364 and 4365: Problem Determination and Service Guide