Lenovo ThinkPad Edge 15 Hardware Maintenance Manual page 50

Table 2. Numeric error codes (continued)
Symptom or error (beeps, if any)
0211
Keyboard error
(two short beeps)
0230
Shadow RAM error—Shadow RAM fails at offset nnnn.
(two short beeps)
0231
System RAM error—System RAM fails at offset nnnn.
(two short beeps)
0232
Extended RAM error— Extended RAM fails at offset nnnn.
(two short beeps)
0250
System battery error—System battery is dead.
(two short beeps)
0251
System CMOS checksum bad— Default configuration
used.
(two short beeps)
0254
System NV7 Volume checksum bad- Default configuration
used
(two short beeps)
0260
System timer error.
(two short beeps)
0270
Real-time clock error.
(two short beeps)
0271
Date and time error—Neither the date nor the time is set
in the computer.
(two short beeps)
0280
Previous boot incomplete— Default configuration used.
(two short beeps)
02D0
System cache error.
(two short beeps)
02F0
CPU ID:xx Failed.
02F5
DMA test failed.
(two short beeps)
44
Hardware Maintenance Manual
FRU or action, in sequence
Run interactive tests of the keyboard and the auxiliary
input device.
System board.
1. DIMM.
2. System board.
1. DIMM.
2. System board.
1. Charge the backup battery for more than 8 hours
by connecting the ac adapter.
2. Replace the backup battery and run BIOS Setup
Utility to reset the time and date.
1. Charge the backup battery for more than 8 hours
by connecting the ac adapter.
2. Replace the backup battery and run BIOS Setup
Utility to reset the time and date.
Turn off the computer and discharge CMOS. Then
restart the computer.
1. Charge the backup battery for more than 8 hours
by connecting the ac adapter.
2. Replace the backup battery and run BIOS Setup
Utility to reset the time and date.
3. System board.
1. Charge the backup battery for more than 8 hours
by connecting the ac adapter.
2. Replace the backup battery and run BIOS Setup
Utility to reset the time and date.
3. System board.
Run BIOS Setup Utility to reset the time and date.
1. Load "Setup Default" in BIOS Setup Utility.
2. DIMM.
3. System board.
1. CPU.
2. System board.
1. CPU.
2. System board.
1. DIMM.
2. System board.