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6. Have the same Diagnostic Diskettes (version)
7. Have the same configuration options set in the system
8. Have the same setup for the operating system control files
Comparing the configuration and software set-up between “working and non-working” systems will often
lead to problem resolution.
Symptom-to-FRU index
The Symptom-to-FRU index lists error symptoms and possible causes. The most likely cause is listed first.
Always begin with “Service checkout” on page 53. This index can also be used to help you decide which
FRUs to have available when servicing a computer. If you are unable to correct the problem using this
index, go to “Undetermined problems” on page 56.
Notes
:
• The Symptom-to-FRU index is not specific to any machine type and are applicable to all ThinkCentre computers.
• If you have both an error message and an incorrect audio response, diagnose the error message first.
• If you cannot run the diagnostic tests or get a diagnostic error code when running a test, first diagnose the POST
error message you receive.
• If you did not receive any error message, look for a description of your error symptoms in the first part of this index.
Power supply problems
If you suspect a power problem, use the following procedures.
Check/Verify
FRU/Action
Check the following for proper installation.
• Power cord
• On/Off switch connector
• On/Off switch power supply connector
• System board power supply connectors
• Microprocessor(s) connection
Reseat connectors
Check the power cord for continuity.
Power cord
Check the power-on switch for continuity.
Power-on switch
Miscellaneous error conditions
Message/Symptom
FRU/Action
Changing display colors
Display/Monitor
Computer will
not
power-off. .
1. Power Switch
2. System Board
3. Riser card, if installed.
Computer will
not
RPL from server
1. Ensure that network is in startup sequence as first
device or first device after diskette.
2. Ensure that network adapter is enabled for RPL.
3. Network adapter (Advise network administrator of
new MAC address)
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ThinkCentre Chromebox Hardware Maintenance Manual
Summary of Contents for ThinkCentre Chromebox
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