Lenovo 70AL, Maintenance Manual, Page: 39 / 190

might require some technical skills or tools, or request that a technician install the optional-service CRU
under the terms of the applicable warranty service type for your country or region.
Non-CRUs must be replaced only by trained service technicians.
The following table lists the major FRUs in your server and the CRU identification information. For a complete
listing of FRU information, such as FRU part numbers and supported server models, go to:
http://www.lenovo.com/serviceparts-lookup
Notes:
• Before servicing a Lenovo product, ensure that you read and understand “Safety information” on page iii.
• Use only parts provided by Lenovo.
Description Self-service CRU Optional-service
CRU
Front panel board assembly No Yes
Front system fan Yes No
Heat sink and fan assembly Yes No
Hot-swap hard disk drive Yes No
Hot-swap hard disk drive backplane (available in some models)
No Yes
Hot-swap redundant power supply (available in some models) Yes No
Keyboard Yes No
Memory module Yes No
Microprocessor No Yes
Mouse Yes No
Non-hot-swap power supply assembly (available in some models) No Yes
Optical drive Yes No
Peripheral Component Interconnect (PCI) card (available in some models)
Yes No
Power conversion board No Yes
Power distribution board and cage assembly (available in models with
hot-swap redundant power supplies) No Yes
Rear system fan
Yes No
System board No No
System board battery Yes No
ThinkServer RAID 500 Upgrade Key for Advanced RAID (available as an
option) Yes No
ThinkServer RAID 700 Battery (available as an option) No Yes
Hot-swap hard disk drive status LEDs
This topic applies only to server models with hot-swap hard disk drives.
Note: Depending on the model, your server might look slightly different from the illustrations in this topic.
Each hot-swap hard disk drive has two status LEDs on the front. Unlock and open the front door to access
the hard disk drives and view the status LEDs.
Chapter 3
.
Product overview
27