Lenovo V50t Gen 2, Hardware Maintenance Manual

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– If it has been working, what changes were made prior to its failing?
– Is this the original reported failure?
• Diagnostics version
– Type and version level
• Hardware configuration
– Print (print screen) configuration currently in use
– BIOS level
• Operating system software
– Type and version level
Notes: To eliminate confusion, identical systems are considered identical only if they:
1. Are the exact machine type and models
2. Have the same BIOS level
3. Have the same adapters/attachments in the same locations
4. Have the same address jumpers/terminators/cabling
5. Have the same software versions and levels
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 31. 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 37.
Notes:
• The Symptom-to-FRU index is not specific to any machine type and are applicable to all 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 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 can have the following causes.
Error FRU/Action
The start-up drive is not in the boot sequence in
configuration.
Check the configuration and ensure that the start-up drive
is in the boot sequence.
No operating system installed on the boot drive. Install an operating system on the boot drive.
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V50t Gen 2 Hardware Maintenance Manual