Filter
Top Products
Table 3. Error messages (continued)
Symptom or error
FRU or action, in sequence
Please connect the AC adapter which was shipped with
the system for best system performance.
Press the ESC key to continue. Docking station is
removed or its ID is different, press F3 to power off
system and restore correct docking station, press F4 to
normal boot.
Beep symptoms
Table 4. Beep symptoms
Symptom or error
FRU or action, in sequence
One beep and a blank, unreadable, or ashing LCD. 1. Reseat the LCD connector
2. LCD assembly
3. External CRT
4. System board
One long and two short beeps, and a blank or unreadable
LCD.
1. System board
2. LCD assembly
3. DIMM
Two short beeps with error codes.
POST error. See “Numeric error codes” on page 46.
Two short beeps and a blank screen.
1. System board
2. DIMM
Two or more beeps, or a continuous beep. Operating
system starts successfully.
If a mini-PCI Ethernet card is installed, conrm that Alert
On LAN 2 in ThinkPad Setup is disabled.
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.
1. DIMM
2. System board
Only the cursor appears.
Reinstall the operating system.
Four cycles of four short beeps and a blank screen.
System board (security chip)
Five short beeps and a blank screen.
System board
No-beep symptoms
Table 5. 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
The power-on password prompt appears. A power-on password or a supervisor password is set.
Type the password and press Enter.
The hard-disk password prompt appears. A hard-disk password is set. Type the password and
press Enter.
48 Hardware Maintenance Manual