Troubleshooting Charts
Problem Action
0270 (Real time clock error) There is an error with the Real-Time Clock. Have the computer
serviced.
0271 (Check date and time settings) The Real-Time Clock has been reset. Enter the BIOS Setup
Utility to verify and set (if necessary) the date and time settings.
02Bx (Diskette drive error) Do as follows:
1. Restart the computer.
2. While the IBM ThinkPad logo is being displayed, press F1 to
enter the BIOS Setup Utility.
3. Use the cursor up/down keys to select Config and press
Enter.
4. Select Advanced Setup and press Enter.
5. Select Others and press Enter.
6. Select FDD and verify that it is set to Internal.
7. Press F10 to save and exit the BIOS Setup Utility.
If you still have a problem, have the computer serviced.
02D0 (System cache error - Cache disa-
bled)
Have the computer serviced.
I/O device IRQ conflict There is an IRQ (interrupt request) conflict with I/O devices in
your computer. See "Resolving System Resource Conflicts" in
the
Online User's Guide
.
Failing Bits: nnnn There are errors reported during the memory test. Note down the
number and have the computer serviced. You may need to
replace the DIMM.
Operating system not found An operating system cannot be found in the hard disk drive or
diskette drive. Turn off the computer, then do as follows:
Verify that the hard disk drive (with an operating system) is
correctly installed in the hard disk drive bay. Then turn on
the computer.
Enter the BIOS Setup Utility and verify that the diskette drive
is correctly identified. Then insert a diskette (with an oper-
ating system) into the diskette drive and turn on the com-
puter.
For Windows 98, 95 and NT users: Use the Windows
startup diskette to help diagnose the problem.
If you still have a problem, have the computer serviced.
110 ThinkPad 390X User's Reference
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