This publication contains the following information:
- Safety information
- General information
- General Checkout
- Diagnostics
- Using the setup utility
- Symptom-to-FRU Index
- Replacing service (FRU) parts
- Service (FRU) part numbers
- Additional Service Information

This manual applies to the following systems:
- ThinkStation S20 (type 4105, 4157, 4217)
- ThinkStation D20 (type 4155, 4158, 4218)


Released on March 2012

To view PDF files you must have the latest version of Adobe Acrobat installed on your system.