Lenovo ThinkCentre M92 Hardware Maintenance Manual (HMM) (May 2012) - ThinkCen - Page 89

self-service CRUs depending on product design might include memory modules, adapter cards, hard disk drives, and optical drives. • Optional-service CRUs: These CRUs are isolated parts within the computer and are concealed by an access panel that is typically secured by more than two screws. Once the access panel is removed, the specific CRU is visible. Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 FRU description Power supply assembly Heat sink fan duct Heat sink and fan assembly Optical drive (available in some models) Optical drive eject/close button Front bezel Front fan assembly Internal speaker Cover presence switch Battery Hard disk drive Memory modules Peripheral Component Interconnect (PCI) card System board Microprocessor Keyboard Mouse Self-service CRU No Yes No Yes Yes Yes No No Yes Yes Yes Yes Yes No No Yes Yes Optional-service CRU Yes No Yes No No No Yes Yes No No No No No No Yes No No Looking up FRU information For detailed FRU information, such as the FRU part numbers and supported computer models, go to: http:/www.lenovo.com/serviceparts-lookup Locating parts on the system board Note: Your computer comes with one of the following system boards. Chapter 8. Locations 83