IBM Aptiva 2124 Hardware Maintenance Service page 168

Table 5- 1 Machine Type 2153 System Board Jumper Settings
Jumper/Settings
SW2
B4 B5 B6 B7
Off On On Off On
Off On On Off Off
Off On Off Off On
Off On Off Off Off
Off Off Off On On
Off Off Off On Off
SW3(B1)
Off
*#
On
SW3(B2)
#
*
On
Off
SW3(B3, B4)
CY2283-1 Y2283-3
Off, Off Off, Off
On, Off --, --
Off, On Off, On
--, -- On, Off
On,On On, On
*
Default settings for 00K8747 & 20L2184.
#
Default settings for 36L9051
CPU Core Voltage
B8
3.3V
3.2V
2.9V
2.8V
2.3V
#
*
2.2V
AMD K6S-300 Voltage Select
3.6V
3.45V
Password Checking
Check password
Bypass password
M1542 Bus Frequency
66 MHz
75 MHz
83 MHz
95 MHz
100 MHz *
Parts/Test Point Locations 5-5
Function
#