30 Upgrade and Maintenance Manual CX2550/60/70 M4
2.4 Documents you need at hand
Maintenance procedures may include references to additional documentation. 
When preparing the maintenance task, ensure that all required manuals are 
available according to the overview below.
I – Ensure to store all printed manuals enclosed with your server in a 
save place for future reference.
– Unless stated otherwise, all manuals are available online at 
http://manuals.ts.fujitsu.com under x86 Servers.
For Japan, please use the following address: 
http://www.fujitsu.com/jp/products/computing/servers/primergy/manual/