IBM PS/1 - System Board Layouts

System Board Layouts
BATTERY
B2
1
3
J8
J11
J14
1
1
2
2
34
33
39 40
4
1
J13
1
4
J12
J6
60 120
161
1
12
J15
U23
1122
71 717272
J1 J2
21
256
J3
11 15 14 25 9 6 1 2 1 2
3344
556651113
610
J5 J7 J9 J10
15
J4
U8
U5
U9
U6
U35 U32
U20
26
Figure 5-1. 386SX 25MHz (72-Pin Memory SIMM) System Board with 2MB
RAM and 25 6K Video Memory
5-2