IBM Aptiva 2156, Hardware Maintenance Service

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5-4
2156 System Board Jumper Settings
Table 5-1 Machine Type 2156 System Board Jumper Settings
Jumper/Settings Function
JP6
ICS9148F-25
Jumper connected
1-3 4-6
1-3 2-4
3-5
2-4
Bus Frequency(MHz)
CPUCLK PCICLK
60 30
66 33
75 30
CPU Core Clock Multiplier
Jumper connected
JP2 JP1
1-3 4-6 1-2
1-3 2-4 1-2
3-5 2-4 1-2
3-5 4-6 1-2
1-3 4-6 2-3
1-3 2-4 2-3
3-5 2-4 2-3
3-5 4-6 2-3
CPU Vi/o Vcore Voltage
Jumper connected
JP4 JP5
3-5 2-4 1-3 2-4
1-3 2-4 1-3 2-4
1-3 2-4 1-3 4-6
1-3 2-4 3-5 2-4
3-5 4-6 3-5 2-4
CPU Clock Frequency Ratio
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Voltage
2.24
2.84
2.94
3.24
1.94
JP3
CMOS data clear-up
Jumper connected
1-2
2-3
JP7
Jumper connected to Front Panel
1-3
2-4-6
5-7
Function
Normal
Clear
Indication
Power Switch
ACP LED
HDD LED