Beep Symptoms - Lenovo ThinkPad T510 Hardware Maintenance Manual

Table 3. Error messages (continued)
Symptom or error
Thermal sensing error.
Cannot boot from any device.

Beep symptoms

Table 4. Beep symptoms
Symptom or error
One beep and a blank, unreadable, or flashing LCD.
One long and two short beeps, and a blank or unreadable
LCD.
Two short beeps with error codes.
Two short beeps and a blank screen.
Two or more beeps, or a continuous beep. Operating
system starts successfully.
Three short beeps, pause, three more short beeps, and
one short beep.
One short beep, pause, three short beeps, pause, three
more short beeps, and one short beep.
Only the cursor appears.
Four cycles of four short beeps and a blank screen.
Five short beeps and a blank screen.
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FRU or action, in sequence
System board.
Check the status of device which you want to boot
from.
Device not found.
1. The device you want to boot from.
2. System board.
Device Error.
1. The device you want to boot from.
2. System board.
No valid operating system.
1. Check that the operating system has no failure and is
installed correctly.
2. Reinstall the operation system.
Excluded from boot order.
• Enter the BIOS Setup Utility and add the device in boot
order.
FRU or action, in sequence
1. Reseat the LCD connector.
2. LCD assembly.
3. External CRT.
4. System board.
1. System board.
2. LCD assembly.
3. DIMM.
POST error. See "Numeric error codes" on page 46.
1. System board.
2. DIMM.
If a mini-PCI Ethernet card is installed, confirm that Alert
On LAN 2 in BIOS Setup Utility is disabled.
1. DIMM.
2. System board
Reinstall the operating system.
System board (security chip)
System board
.
Chapter 4 Related service information
51