Lenovo ThinkPad L512 Hardware Maintenance Manual - Page 52

Error messages, No-beep symptoms, Table 2. Numeric error codes continued, Table 3. Error messages - fan

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Table 2. Numeric error codes (continued) Symptom or error (beeps, if any) 02F7 Fail-safe timer NMI failed (two short beeps) 1802 Unauthorized network card is plugged in-Turn off and remove the miniPCI network card. (two short beeps) FRU or action, in sequence 1. DIMM. 2. System board. 1. Remove Mini PCI network card. 2. System board. Error messages Table 3. Error messages Symptom or error (beeps, if any) FRU or action, in sequence Bad CRC2. Enter BIOS Setup Utility, and load Setup defaults. (two short beeps) Press F1 to enter BIOS Setup Utility. Press F9, and Enter to load the default setting. Then save the current setting by pressing F10, and restart the computer. Fan error. (four short beeps, one long beep) 1. Fan. 2. Thermal grease. 3. System board. DRAM is unplugged. (four short beeps, pause, three short beeps, pause, one short beep, pause, one short beep) Install the DRAM. DRAM is not well plugged. (seven short beeps, one long beep, four short beeps, one long beep, one short beep, one long beep, one short beep, one long beep till forever.) Reinstall the DRAM. Operating system not found. 1. Check that the operating system has no failure and is installed correctly. 2. Enter BIOS Setup Utility and see whether the hard disk drive is properly identified. If you still see the same error message, check the boot sequence. 3. Reinstall the hard disk drive. 4. Reinstall the operating system. Unauthorized WAN card is plugged in Power off and remove the WAN card. Turn off the computer and remove the WAN card. System Configuration Data Read Error (two short beeps) Press F1 to enter BIOS Setup Utility. Press F9, and Enter to load the default setting. Then save the current setting by pressing F10, and restart the computer. No-beep symptoms Table 4. No-beep symptoms Symptom or error No beep, power-on indicator on, LCD blank, and no POST. No beep, power-on indicator on, and LCD blank during POST. FRU or action, in sequence 1. Make sure that every connector is connected tightly and correctly. 2. DIMM. 3. System board. 1. Reseat DIMM. 2. System board. 46 Hardware Maintenance Manual

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Table 2. Numeric error codes (continued)
Symptom or error (beeps, if any)
FRU or action, in sequence
02F7
Fail-safe timer NMI failed
(two short beeps)
1.
DIMM.
2. System board.
1802
Unauthorized network card is plugged in-Turn off and
remove the miniPCI network card.
(two short beeps)
1.
Remove Mini PCI network card.
2. System board.
Error messages
Table 3. Error messages
Symptom or error (beeps, if any)
FRU or action, in sequence
Bad CRC2. Enter BIOS Setup Utility, and load Setup
defaults.
(two short beeps)
Press F1 to enter BIOS Setup Utility. Press F9, and
Enter to load the default setting. Then save the current
setting by pressing F10, and restart the computer.
Fan error.
(four short beeps, one long beep)
1.
Fan
.
2. Thermal grease.
3. System board.
DRAM is unplugged.
(four short beeps, pause, three short beeps, pause, one
short beep, pause, one short beep)
Install the DRAM.
DRAM is not well plugged.
(seven short beeps, one long beep, four short beeps, one
long beep, one short beep, one long beep, one short
beep, one long beep till forever.)
Reinstall the DRAM.
Operating system not found.
1.
Check that the operating system has no failure
and is installed correctly.
2. Enter BIOS Setup Utility and see whether the hard
disk drive is properly identified. If you still see the
same error message, check the boot sequence.
3. Reinstall the hard disk drive.
4. Reinstall the operating system.
Unauthorized WAN card is plugged in
Power off and remove the WAN card.
Turn off the computer and remove the WAN card.
System Configuration Data Read Error
(two short beeps)
Press F1 to enter BIOS Setup Utility. Press F9, and
Enter to load the default setting. Then save the current
setting by pressing F10, and restart the computer.
No-beep symptoms
Table 4. No-beep symptoms
Symptom or error
FRU or action, in sequence
No beep, power-on indicator on, LCD blank, and no
POST.
1.
Make sure that every connector is connected
tightly and correctly
.
2. DIMM.
3. System board.
No beep, power-on indicator on, and LCD blank during
POST.
1.
Reseat DIMM
.
2. System board.
46
Hardware Maintenance Manual