IBM Aptiva 2124, Hardware Maintenance Service

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Parts/Test Point Locations 5-13
2139 System Board Jumper Settings
Table 5- 6 System Board Jumper Settings
Jumper/Settings Function
J1
1-2
2-3
Audio Resource Protection
Write Protected
Programmable
JP2
1-2
2-3
VGA IRQ
Disable IRQ
Enable IRQ
S1, SW 1
On
Off*
Host Bus Clock Selection
66MHz
100MHz
S1, SW 2
On
Off*
Password Check
Bypass password
Check password
S1, SW 3,4 Reserved
S1, SW 5,6,7,8
On, On, On, On
On, Off, On, On
Off, On, On, On
Off, Off, On, On
On, On, Off, On
On, Off, Off, On
Off, On, Off, On
Off, Off, Off, On
Slot1 Core/Bus Clock Ratio
2
3
4
5
5/2
7/2
9/2
11/2