IBM ThinkPad X20 Hardware Maintenance Manual page 52

0200
Fixed disk failure
021x
Monitor type does not match
CMOS
0220
Shadow RAM failure at offset
nnnn
0232
Extended RAM failure at offset
nnnn
0250
System battery is dead—
replace and run setup
0251
System CMOS checksum
bad—Default configuration used
0252
Password checksum bad.
0260
System timer error
0270
Real time clock error
0271
Date and time error
0280
Boot incomplete error— Default
configuration used
48
ThinkPad X20, X21, X22, X23
1. Reseat the hard disk
drive.
2. Load Setup Defaults in IBM
BIOS Setup Utility.
3. Hard disk drive.
4. System board.
1. Load Setup Defaults in
IBM BIOS Setup Utility.
1. System board.
1. DIMM.
2. System board.
1. Replace the backup
battery and run IBM BIOS
Setup Utility to reset the
time and date.
1. Replace the backup
battery and run IBM BIOS
Setup Utility to reset the
time and date..
1. Reset the password by
running IBM BIOS Setup
Utility.
1. Replace the backup
battery and run IBM BIOS
Setup Utility to reset the
time and date.
2. System board.
1. Replace the backup
battery and run IBM BIOS
Setup Utility to reset the
time and date.
2. System board.
1. Run IBM BIOS Setup
Utility to reset the time
and date..
1. Load Setup Defaults in
IBM BIOS Setup Utility.
2. DIMM.
3. System board.