IBM ThinkPad X40 Hardware Maintenance Manual page 66

Symptom or error
0270
Real time clock
error—Real-Time Clock fails
BIOS hardware test
0271
Date and time error—BIOS
found date or time out of range
and reset the Real-Time Clock.
0280
Previous boot
incomplete—Default
configuration used.
0281
Memory Size found by POST
differed from CMOS—Memory
Size found by POST differed
from CMOS
02B0
Diskette drive A error—Drive A:
is present but fails the BIOS
POST diskette tests.
02B1
Diskette drive B error—Drive B:
is present but fails the BIOS
POST diskette tests.
02B2
Incorrect drive A type—Type of
floppy drive A: not correctly
identified in Setup.
02B3
Incorrect drive B type—Type of
floppy drive B: not correctly
identified in Setup.
02D0
System cache error.—RAM
cache failed and BIOS disabled
the cache
(continued)
Symptom-to-FRU index
FRU or action, in sequence
1. Replace the backup
battery and run IBM BIOS
Setup Utility to reset the
time and date.
2. System board.
Run IBM BIOS Setup Utility to
reset the time and date.
1. Load "Setup Default" in
IBM BIOS Setup Utility.
2. DIMM.
3. System board.
1. Enter here.
Check to see that the drive is
defined with the proper
diskette type in Setup and
that the diskette drive is
attached correctly.
Check to see that the drive is
defined with the proper
diskette type in Setup and
that the diskette drive is
attached correctly.
1. Diskette drive.
2. External FDD cable.
3. I/O card.
4. Run setup
1. Diskette drive.
2. External FDD cable.
3. I/O card.
4. Run setup
On older boards, check the
cache jumpers. You may have
to replace the cache
ThinkPad X40
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