Lenovo J SERIES 3000 - Manual (Page 101)

1 Fan plenum, fan, and heat
sink 6 Diskette drive
2 Microprocessor 7 Front panel card
3 Optical drive 8 Memory modules
4 Power switch/LED
assembly 9 System board
5 Hard disk drive 10 Power supply
Identifying parts on the system board
System board locations are different depending on the machine type.
Chapter 9 . Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 95