Lenovo J SERIES 3000 - Manual (Page 77)

1 Heat sink and fan 6 Front panel card
2 Microprocessor 7 Hard disk drive
3 Memory modules 8 System board
4 Optical drive 9 System fan
5 Diskette drive 10 Power supply
Identifying parts on the system board
There are different system boards depending on the machine type.
Chapter 8 . Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395) 71