Beep Symptoms; Post Error Codes - Lenovo ThinkCentre 7673 Hardware Maintenance Manual

Diagnostic Error Code
305-000-XXX Monitor DDC Test Passed
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
Four sets of three beeps
4, 5, 6, or 7 beeps9, 10, or 11 beeps
8 beeps

POST error codes

Each time you power-on the system, it performs a series of tests that check the operation of the system
and some options. This series of tests is called the Power-On Self-Test, or POST. 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 appears on the screen. A single problem can cause several
error messages to appear. When you correct the cause of the first error message, the other error messages
probably will not appear on the screen the next time you turn on the system.
FRU/Action
No action
1. Run Setup 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
63