Jumper Setting; Setting Jumper - Acer Aspire M3900 Service Manual

Jumper Setting

The section explains how to set jumper for correct configuration of the mainboard.

Setting Jumper

Use the motherboard jumpers to set system configuration options. Jumpers with more
numbered. When setting the jumpers, ensure that the jumper caps are
Jumper Type
CLR_CMOS 3-pin
Internal header pin definition
Header Name
Chapter 5
Description
CLEAR CMOS 1-2: NORMAL
2-3: CLEAR
Before clearing the CMOS, make sure
to turn the system off.
CPU FAN HEADER
SYS FAN HEADER
(3pin & 4 pin colay
default:3 pin)
FRONT PANEL HEADER
Placed on the correct pins.
Setting (default)
Function
1: GND
2: +12V
3: SENSE
1: GND
2: +12V
3: SENSE
4: PWM CONTROL(4 pin
Fan)
1: SATALED+
2: ACPI_LED
3: SATALED-
4: PWR_LED
5: GND
6: PWR_SW
7: RESET
8: GND
9: NC
10: Key
11: NC
12: VCC
13: NC
14: -ACTIVE_C
Than one pin are
Picture
Definition
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