Lenovo THINKCENTRE 4485 - Manual (Page 75)

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-XXXModem 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 476.
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 476.
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