Diagnostic Error Code
FRU/Action
305-000-XXX
Monitor DDC Test Passed
No action
305-250-XXX
Monitor DDC self test failure
1. Run Setup to enable DDC
2. Cable
3. Monitor
4. Video card
5. System board
415-000-XXX
Modem Test Passed
No action
415-XXX-XXX
Modem error
Remove the Modem and re-test the system
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
FRU/Action
2 short beeps
CMOS setting error
Perform the following actions in order.
1. Start the Setup Utility program and press F10 to
Save and exit. See Chapter 6 “Using the Setup Utility
program” on page 43.
2. Start the Setup Utility program and press F9 to load
defaults and then press F10 to Save and exit.
3. Perform a Boot-block recovery. See “Recovering
from a POST and BIOS update failure” on page 366.
1 long and 2 short beeps
Monitor or video adapter card
error
Perform the following actions in order.
1. Make sure the monitor is properly connected to the
computer.
2. Replace the video adapter card (if present).
3. Replace the system board.
1 long and 9 short beeps
BIOS ROM error
Perform the following actions in order.
1. Start the Setup Utility program and press F9 to load
defaults and then press F10 to Save and exit. See
Chapter 6 “Using the Setup Utility program” on page
43.
2. Perform a Boot-block recovery. See “Recovering
from a POST and BIOS update failure” on page 366.
3. Replace the system board.
Continuous long beeps
DRAM memory error
Perform the following actions in order.
1. Make sure the memory module(s) are properly seated
in the connector(s).
2. Replace the memory module(s).
3. Replace the system board.
Chapter 7
.
Symptom-to-FRU index
67
Summary of Contents for ThinkCentre M81
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