Clearing CMOSIf you need to erase configuration information, you must move the CMOS jumper.See the illustration in “Recovering BIOS” on page 99 for the location of the CMOSjumper.The default position is a jumper installed on pins 1 and 2. Before you change theposition of this jumper, you must turn off the computer and attached devices, anddisconnect all external cables and power cords. Remove the cover and then movethe jumper to pins 2 and 3.Note: If possible, record your computer configuration information before movingthe CMOS jumper.After moving the jumper, wait at least 5 minutes for the CMOS information toclear.Changing the position of this jumper erases all configuration and setupinformation, including the power-on and administrator passwords. Therefore, youmust reconfigure the computer after clearing CMOS memory (see “Chapter 4.Configuring your computer” on page 27).After you clear the CMOS information, move the jumper back to its normalposition (pins 1 and 2). Reconnect the external cables and power cords; then, turnon the attached devices and the computer.Replacing the batteryWhen replacing the battery, you must replace it with a lithium battery of the sametype from the same manufacturer. To avoid possible danger, read and follow thesafety statement below.To order replacement batteries, call 1-800-772-2227 within the United States, and1-800-465-7999 or 1-800-465-6666 within Canada. Outside the U.S. and Canada, callyour IBM reseller or IBM marketing representative.Note: After you replace the battery, you must reconfigure your system and resetthe system date and time.Statement 2CAUTION:When replacing the lithium battery, use only IBM Part Number 33F8354 or an equivalenttype battery recommended by the manufacturer. If your system has a module containinga lithium battery, replace it only with the same module type made by the samemanufacturer. The battery contains lithium and can explode if not properly used,handled, or disposed of.Do not:v Throw or immerse into water.v Heat to more than 100 C (212 F)v Repair or disassembleDispose of the battery as required by local ordinances or regulations.Chapter 6. Solving problems 103
