Error Messages; No-Beep Symptoms; Beep Symptoms; Lcd-Related Symptoms - Lenovo ThinkPad T430u Hardware Maintenance Manual

Error messages

Table 2. Error messages
Symptom or error (beeps, if any)
Fan error.
Thermal sensing error.
This system does not support batteries that are not
genuine Lenovo-made or authorized. The system will
continue to boot, but may not charge unauthorized
batteries.
Attention: Lenovo has no responsibility for the
performance or safety of unauthorized batteries, and
provides no warranties for failures or damage arising out
of their use.

No-beep symptoms

Table 3. 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 4. Beep symptoms
Problem
One short beep, pause, three short beeps, pause, three
more short beeps, and one short beep
Four cycles of four 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.
FRU or action, in sequence
1. Fan.
2. Thermal grease.
3. System board.
The thermal sensor is not functioning correctly. Have the
computer serviced.
Replace the battery with the correct Lenovo battery for
this system.
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.
The Security Chip has a problem. Have the computer
serviced.
Continue to boot immediately when the error was
detected.
Chapter 4
.
Related service information
37