IBM PC 300, Maintenance Service Manual

Page: 119 / 163

119
Jumper Settings of the System Board of Machine Types 2193 and 2196
Table 4-4 Jumper Settings of the System Board of Machine Types 2193
and 2196
Jumper/Settings Function
JP1 JP2 JP3 JP4
1-2 1-2 1-2 1-2
2-3 1-2 2-3 1-2
2-3 2-3 1-2 2-3
2-3 1-2 1-2 1-2
1-2 1-2 1-2 2-3
1-2 2-3 2-3 2-3
Bus Frequency (MHz)
CPUCLK SDRAMCLK
66
100
100 133
95 95
100 100
66 66
97 129
CPU Core Clock Multiplier
Jumper connected
JP6 JP7 JP8
2-3 1-2 1-2
1-2 1-2 2-3
1-2 2-3 2-3
2-3 2-3 2-3
2-3 1-2 2-3
1-2 1-2 1-2
CPU Clock Frequency Ratio
6.0
5.5
5.0
4.5
4.0
3.0
JP9
CMOS data clear-up
Jumper connected
2-3
1-2
J18
Jumper connected to Front Panel
1-2
3-4
J15
Jumper connected to power switch
1-2
JP5
Vcore Voltage
1-2
3-4
5-6
Function
Normal
Clear
Indication
Power LED
Hard Disk Drive LED
Power Button
CPU Voltage Frequency
2.1V
2.2V
2.4V