Beep Symptoms; Post Error Codes - Lenovo ThinkCentre 3026 Maintenance Instructions Manual

Beep symptoms

Beep symptoms are tones or a series of tones separated by pauses (intervals
without sound) during POST.
The following tables describes beep symptoms.

POST error codes

Each time you turn on your computer, it performs a series of tests to check the
operation of the computer components and some optional devices in the computer.
This series of tests is called the power-on self-test, or POST. The POST does the
following operations:
v Checks some basic system board operations
v Checks the memory operation
v Starts the video operation
v Verifies that the boot drive is working
If the POST detects a problem, an error message is displayed on the screen. A
single problem can cause several error messages. When you correct the cause of
the first error message, the other error messages probably will not be displayed the
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Hardware Maintenance Manual
Diagnostic Error Code
303-XXX-XXX
Joystick error
305-000-XXX
Monitor DDC Test Passed
305-250-XXX
Monitor DDC self test failure
415-000-XXX
Modem Test Passed
415-XXX-XXX
Modem error
Beep Symptom
1, 2, or 3 beeps
4, 5, 6, or 7 beeps
9, 10, or 11 beeps
8 beeps
FRU/Action
Remove the Joystick and re-test the system
No action
1. Run the Setup Utility program to enable
DDC
2. Cable
3. Monitor
4. Video card
5. System board
No action
Remove the Modem and re-test the system
FRU/Action
Reseat the memory modules. If the error
persists, replace the memory modules one at
a time until the failing module is
determined.
Before replacing the system board, remove
any optional adapters (Express card, Modem
card, Media reader) and retry. If the problem
persists, replace the system board.
Otherwise, reinstall the optional adapters
one at a time until the failing adapter is
determined.
Replace the system board.