[. . . ] Warning: Always turn off your computer before opening its case to avoid damaging its internal components. Slide the battery compartment latch (Figure 1A) to the right to remove the battery (Figure 1B). Removing the battery will prevent you from accidentally turning on the computer. [. . . ] If you have been using your PowerBook, wait 30 minutes after shutting down your computer to let the internal components cool down before continuing. Turn over the computer and raise the display so you can access the keyboard. Make sure that the keyboard locking screw is not in the locked position (Figure 2). Your new PowerBook comes with the keyboard unlocked, so unless you or someone else locked the keyboard, you can skip this step. 073-0597 Rev. Release the keyboard by pulling down on the keyboard release tabs located to the left of the F1 and F9 keys (Figure 3), then lift the top portion of the keyboard up and toward the display to release the tabs that hold the bottom of the keyboard in place. Flip over the keyboard and lay it on the palm rests and trackpad (Figure 4). Removing the Modem 1. Touch the computer's inside framework (a dull gray conductive composite material) to discharge any static electricity, as shown (Figure 5). Note: It may be helpful to use a finger tip to hold the top of the screw straight and steady while turning the screw with a tool. Closing the Computer 1. Verify that the keyboard connector cable is securely attached to the logic board (Figure 13). Flip the keyboard back on top of the opening and insert the tabs at the bottom of the keyboard into the openings in the case (Figure 14). Pull down on the keyboard release tabs located to the left of the F1 and F9 keys (Figure 3) and then press down on the top of the keyboard. Reconnect the power cord and any other cables that were connected and restart your computer. Warning: Never turn on your computer unless all of its internal, external, and case parts are securely installed. Operating the computer when its case is open or missing parts can damage your computer or cause injury. Replacing International Modems After you have replaced a modem in Europe or Asia, open the software utility Modem Country Selector and verify that the modem is set to the correct country. [. . . ] Operating the computer when its case is open or missing parts can damage your computer or cause injury. Replacing International Modems After you have replaced a modem in Europe or Asia, open the software utility Modem Country Selector and verify that the modem is set to the correct country. Modem Country Selector is located in the Apple Extras folder on your hard drive or can be downloaded as part of the Apple Modem Updater software bundle at http://asu. info. apple. com. PowerBook G4 Modem - 3 Apple Computer, Inc. Under the copyright laws, this document may not be copied, in whole or in part, without the written consent of Apple. [. . . ]