
Beep symptoms
Table 4. Beep symptoms
Symptom or error | FRU or action, in sequence | |
|
|
|
One beep and a blank, unreadable, or flashing 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 | 1. | System board. |
LCD. | 2. | LCD assembly. |
| 3. | DIMM. |
|
| |
Two short beeps with error codes. | POST error. See “Numeric error codes” on page 51. | |
|
|
|
Two short beeps and a blank screen. | 1. | System board. |
| 2. | DIMM. |
|
| |
Two or more beeps, or a continuous beep. Operating | If a | |
system starts successfully. | On LAN 2 in BIOS Setup Utility is disabled. | |
|
|
|
Three short beeps, pause, three more short beeps, and | 1. | DIMM. |
one short beep. | 2. | System board |
|
|
|
One short beep, pause, three short beeps, pause, three |
|
|
more short beeps, and one short beep. |
|
|
|
| |
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.
Symptom or error | FRU or action, in sequence | |
|
|
|
No beep, | 1. | Make sure that every connector is connected |
POST. |
| tightly and correctly. |
| 2. | DIMM. |
| 3. | System board. |
|
|
|
No beep, | 1. | Reseat DIMM. |
POST. | 2. | System board. |
| ||
|
| |
The | A | |
| Type the password and press Enter. | |
|
| |
The | A | |
| press Enter. | |
|
|
|
LCD-related symptoms
Important: The TFT LCD for the notebook computer contains many
If the LCD you are servicing has two or less visible defective pixels, it should not be considered faulty. However, if the LCD has three or more visible defective pixels, it will be deemed as defective by Lenovo and it should be replaced.
Notes: