Lenovo ThinkPad 390X Hardware Maintenance Manual (November 1999): ThinkPad 390 - Page 45
Numeric Error Codes, and remedies for reported problems. - cmos battery
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Numeric Error Codes The following is a list of the message that the BIOS can display. Most of them occur during POST. Some of them display information about a hardware device, e.g., the amount of memory installed. Others may indicate a problem with a device, such as the way it has been configured. Following the list are explanations of the messages and remedies for reported problems. If the system fails after you make changes in the Setup menus, reset the computer, enter Setup and install Setup defaults or correct the error. Symptom/Error 0200 Failure Fixed Disk 021x Keyboard error 023x Memory error 0250 System battery error 0251 System CMOS checksum bad - Default configuration used 0260 System timer error 0270 Real time clock error 0271 Check date and time setting FRU/Action in Sequence 1. Reseat hard disk drive. 2. Load Setup Defaults in BIOS Setup Utility. 3. Hard disk drive 4. System board Go to "Keyboard and Auxiliary Input Device Checkout" on page 29. 1. DIMM 2. BIOS ROM 3. System board Replace backup battery (RTC) and run BIOS Setup Utility to reconfigure the system time, then reboot the system. 1. Backup battery (RTC) 2. Run BIOS Setup Utility to recon- figure the system, then reboot the system. 1. Backup battery (RTC) 2. Run BIOS Setup Utility to recon- figure the system, then reboot the system. 3. System board 1. Backtup battery (RTC) 2. Run BIOS Setup Utility to recon- figure the system, then reboot the system. 3. System board 1. Run BIOS Setup Utility and verify date and time. 2. Backup battery (RTC) 3. System board ThinkPad 390X / i 1700 HMM 39