Figure 42. System board parts locations
1
PCI card slot
13
Memory slot 3
2
PCI Express x16 graphics card slot
14
Front panel connector
3
Internal speaker connector
15
PS/2 keyboard and mouse connector
4
Cover presence switch connector (Intrusion switch
connector)
16
Serial (COM 2) connector
5
Battery
17
Front audio connector
6
Thermal sensor connector
18
24-pin power connector
7
Microprocessor fan connector
19
Power fan connector
8
Microprocessor
20
SATA connectors (2)
9
4-pin power connector
21
eSATA connector
10
Memory slot 2
22
Front USB connectors (2)
11
Memory slot 1
23
Clear CMOS (Complementary Metal Oxide
Semiconductor) /Recovery jumper
12
Memory slot 4
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
Chapter 9
.
Replacing FRUs (Machine types: 3026, 3039, 3137, 3149, 3245, 3269, 3319, 3394, 3491, 3627, 3699, 3878,
4972, 5132, 5261, 5297, 5391, 5472, 5485, 5536, 5548, 5567, 5864, and 6213.)
101
Summary of Contents for 3699
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