Symptom or error FRU or action, in sequence0250System battery error—Systembattery is dead.Replace the backup batteryand run IBM BIOS SetupUtility to reset the time anddate.0251System CMOS checksumbad—Default configurationused.Replace the backup batteryand run IBM BIOS SetupUtility to reset the time anddate.0252Password checksum bad—Thepassword is cleared.Reset the password byrunning IBM BIOS SetupUtility.0260System timer error1. Replace the backupbattery and run IBM BIOSSetup Utility to reset thetime and date.2. System board.0270Real time clock error1. Replace the backupbattery and run IBM BIOSSetup Utility to reset thetime and date.2. System board.0271Date and time error—Neitherthe date nor the time is set inthe computer.Run IBM BIOS Setup Utility toreset the time and date.0280Previous bootincomplete—Defaultconfiguration used.1. Load “Setup Default” inIBM BIOS Setup Utility.2. DIMM.3. System board.02B2Incorrect drive A type1. Diskette drive.2. External FDD cable.3. I/O card.02F4EISA CMOS not writable1. Load Setup Defaults inIBM BIOS Setup Utility.2. Replace the backup battery.3. System board.02F5DMA test failed1. DIMM.2. System board.02F6Software NMI failed1. DIMM.2. System board.02F7Fail-safe timer NMI failed1. DIMM.2. System board.1801Attached docking station is notsupportedShut down the computer andremove it from the dockingstation.1802Unauthorized network card isplugged in—Power off andremove the miniPCI networkcard.1. Remove Mini PCI networkcard.2. System board.Symptom-to-FRU indexThinkPad R40 55
