No-Beep Symptoms; Beep Symptoms; Lcd-Related Symptoms - Lenovo ThinkPad S430 Maintenance Manual

Table 3. Error messages (continued)
Symptom or error (beeps, if any)
provides no warranties for failures or damage arising out
of their use.

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.
The power-on password prompt appears.
The hard disk password prompt appears.

Beep symptoms

Table 5. Beep symptoms
Problem
One short beep, pause, three short beeps, pause, three
more short beeps, and one short beep
Three short beeps, pause, one short beep, pause, one
more short beep, and three short beeps
One long and two short beeps
Four cycles of four short beeps
Five short beeps
Five short beeps, pause, five short beeps, and pause

LCD-related symptoms

Important: The TFT LCD for the notebook computer contains many thin-film transistors (TFTs). The
presence of a small number of dots that are missing, discolored, or always lighted is characteristic of TFT
LCD technology, but excessive pixel problems can cause viewing concerns.
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:
FRU or action, in sequence
FRU or action, in sequence
1. Ensure that every connector is connected tightly
and correctly.
2. Memory module.
3. System board.
1. Reseat the Memory module.
2. System board.
A power-on password or a supervisor password is set.
Type the password and press Enter.
A hard disk password is set. Type the password and
press Enter.
Solution
Ensure that memory modules are installed correctly. If
they are, and you still hear the beeps, have the computer
serviced.
PCI resource allocation failure. Power off the computer
and remove the PCI devices. If the beeps persist, have
the computer serviced.
The video function has a problem. Have the computer
serviced.
The Security Chip has a problem. Have the computer
serviced.
The system board has a problem. Have the computer
serviced.
Continue to boot immediately when the error was
detected.
Chapter 4
.
Related service information
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