Beep Symptoms; Post Error Codes - Lenovo ThinkCentre M90p Maintenance Manual

Diagnostic Error Code
220-XXX-XXX Hi-Capacity Cartridge Drive error
301-XXX-XXX Keyboard error
301-000-XXX Keyboard Test Passed
302-000-XXX Mouse Test Passed
302-XXX-XXX Mouse error
303-000-XXX Joystick Test Passed
303-XXX-XXX Joystick error
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
1, 2, or 3 beeps
4, 5, 6, or 7 beeps9, 10, or 11 beeps
8 beeps

POST error codes

Each time you turn on your computer, it performs a series of tests to check the operation of the computer
components and some optional devices in the computer. 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
FRU/Action
1. Remove the Hi-Capacity Cartridge Drive and re-test
the system
1. Keyboard
2. Check and test mouse
3. System board
No action
No action
1. Mouse
2. Check and test Keyboard
3. System board
No action
Remove the Joystick and re-test the system
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
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