Locating parts on the system board
Figure 42 shows the location of parts on the system board.
1
PCI adapter card slot
11
Memory slots (4)
2
PCI Express x16 adapter card slot
12
24-pin power connector
3
Battery
13
Serial (COM 2) connector
4
Internal speaker connector
14
Front audio connector
5
Cover presence (Intrusion) switch
connector
15
SATA connectors (2)
6
Microprocessor fan connector
16
System fan connector
7
Thermal sensor connector
17
Front USB connector 1
8
Microprocessor
18
Front USB connector 2
9
4-pin power connector
19
Clear CMOS/Recovery jumper
10
Front panel connector
20
Power fan connector
Replacing the battery
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
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.
Figure 42. System board parts locations
Chapter 9. Replacing FRUs - Desktop computers
131
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