IBM ThinkPad R40 Hardware Maintenance Manual page 59

Symptom or error
0250
System battery error—System
battery is dead.
0251
System CMOS checksum
bad—Default configuration
used.
0252
Password checksum bad—The
password is cleared.
0260
System timer error
0270
Real time clock error
0271
Date and time error—Neither
the date nor the time is set in
the computer.
0280
Previous boot
incomplete—Default
configuration used.
02B2
Incorrect drive A type
02F4
EISA CMOS not writable
02F5
DMA test failed
02F6
Software NMI failed
02F7
Fail-safe timer NMI failed
1801
Attached docking station is not
supported
1802
Unauthorized network card is
plugged in—Power off and
remove the miniPCI network
card.
Symptom-to-FRU index
FRU or action, in sequence
Replace the backup battery
and run IBM BIOS Setup
Utility to reset the time and
date.
Replace the backup battery
and run IBM BIOS Setup
Utility to reset the time and
date.
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.
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. Diskette drive.
2. External FDD cable.
3. I/O card.
1. Load Setup Defaults in
IBM BIOS Setup Utility.
2. Replace the backup battery.
3. System board.
1. DIMM.
2. System board.
1. DIMM.
2. System board.
1. DIMM.
2. System board.
Shut down the computer and
remove it from the docking
station.
1. Remove Mini PCI network
card.
2. System board.
ThinkPad R40
55