Lenovo THINKSTATION 7782, Hardware Maintenance Manual

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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 the Setup Utility program 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 the POST.
The following tables describes beep symptoms.
Beep Symptom FRU/Action
3 short beeps and 1 long beep Memory not detected 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.
2 short beeps Common POST Error Indicates that an error has occurred during the POST.
POST error codes
Each time you Turn 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 . 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 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.
POST Error code POST Error message Description/Action
00CE Machine Type or Serial Number is INVALID This error message is displayed when the machine
type or the serial number is invalid.
0211 Keyboard not found This error message is displayed when there is no
keyboard detected.
Chapter 8
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Symptom-to-FRU Index
61