Lenovo IdeaCentre B520 - Manual (Page 22)

Hardware Maintenance Manual
20
Symptom-to-FRU Index
6
The Symptom-to-FRU index lists error symptoms and possible causes.
The most likely cause is listed first. Always begin with Chapter 4, “General
Checkout,” on page 13. This index can also be used to help you decide
which FRUs to have available when servicing a computer.
Notes
• 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 you get a diagnostic error
code when running a test but did receive a POST error message
diagnose the POST error message first.
• If you did not receive any error message look for a description of
your error symptoms in the first part of this index.
Hard disk drive boot error
A hard disk drive boot error (error codes 1962) can have the following causes.
Error FRU/Action
No operating system found. Press
any key to repeat boot sequence. Install an operating system on the
boot drive.
Power Supply Problems
If you suspect a power problem, use the following procedures.
Check/Verify FRU/Action
Check the following for proper
installation.
Power adapter connector •
System Board Power adapter •
connectors
Microprocessor(s) connection
•
Reseat connectors