Lenovo ThinkCentre A70 Hardware Maintenance Manual for ThinkCentre A70 - Page 67

Beep symptoms

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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 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 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 beeps CMOS setting error 1 long and 2 short beeps Monitor or video adapter card error 1 long and 9 short beeps BIOS ROM error Continuous long beeps DRAM memory error FRU/Action 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" on page 39. 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 256. 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. 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" on page 39. 2. Perform a Boot-block recovery. See "Recovering from a POST and BIOS update failure" on page 256. 3. Replace the system board. 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 61

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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” on
page 39.
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 256.
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” on page 39.
2. Perform a Boot-block recovery. See “Recovering
from a POST and BIOS update failure” on page 256.
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
61