Acer Aspire SA90, Service Manual

Page: 60 / 72

Chapter 5 54
Jumper Setting
This section explains how to set jumpers for correct configuration of the mainboard.
Setting Jumper
Use the motherboard jumpers to set system configuration options. Jumpers with more than one pin are
numbered. When setting the jumpers, ensure that the jumper caps are placed on the correct pins.
Clear CMOS
Description Illustration
The illustrations show a 2-pin jumper. When the jumper
cap is placed on both pins, the jumper is SHORT. If you
remove the jumper cap, or place the jumper cap on just one
pin, the jumper is OPEN.
This illustration shows a 3-pin jumper. Pins 1 and 2 are
SHORT
Jumper Type Description Setting(Default) Illustration
CLR_CMOS 3-pin CLEAR CMOS 1-2 : Clear
2-3 : Normal
Before clearing the
CMOS,make sure to
turn off the system
SHORT OPEN
Clear CMOS
1
Jumper and Connector Information
Chapter 5