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Locating parts on the system board
Figure 42 shows the location of parts on the system board.
Figure 42. System board parts locations
connector
Replacing the battery
This section provides instructions on how to replace the battery.
Your computer has a special type of memory that maintains the date, time, and
settings for built-in features, such as parallel-port assignments (configuration). A
battery keeps this information active when you turn off the computer.
1 PCI adapter card slot
2 PCI Express x16 adapter card slot
3 Battery
4 Internal speaker connector
5 Cover presence (Intrusion) switch
6 Microprocessor fan connector
7 Thermal sensor connector
8 Microprocessor
9 4-pin power connector
10 Front panel connector
Attention
Do not open your computer or attempt any repair before reading and understanding the
"Important safety information" in the ThinkCentre Safety and Warranty Guide that came with
your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide, go to:
http://www.lenovo.com/support
11 Memory slots (4)
12 24-pin power connector
13 Serial (COM 2) connector
14 Front audio connector
15 SATA connectors (2)
16 System fan connector
17 Front USB connector 1
18 Front USB connector 2
19 Clear CMOS/Recovery jumper
20 Power fan connector
Chapter 9. Replacing FRUs - Desktop computers
131
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