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

Diagnostic Error Code
305-250-XXX Monitor DDC self test failure
415-000-XXXModem Test Passed
415-XXX-XXX Modem error

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.
Beep Symptom
2 short 1 long beeps
4, 5, 6, or 7 beeps9, 10, or 11 beeps
8 beeps

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:
• Checks some basic system board operations
• Checks the memory operation
• Starts the video operation
• 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 next time you turn on the computer.
FRU/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.
Chapter 7
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Symptom-to-FRU index
57