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CMOS Clear
JBT1 is used to clear CMOS.
contact pads to prevent the accidental clearing of CMOS. To clear CMOS,
use a metal object such as a small screwdriver to touch both pads at the
same time to short the connection.
from the system before clearing CMOS. Note: For an ATX power supply,
you must completely shut down the system, remove the AC power cord and
then short JBT1 to clear CMOS.
clear CMOS.
Watch Dog Enable/Disable
JWD is used to enable Watch Dog,
a system monitor that can reboot
the system when a software ap-
plication hangs.
cause WD to
reset the system if
an application hangs. Pins 2-3 will
generate a non-maskable interrupt
signal for the application that
hangs. See the table on the right
for jumper settings.
can also be enabled via BIOS.
4-pin
A T X P W R
J 1 B 4
Fan6 Fan5
P W R
DIMM 1B
Bank 1
DIMM 1A
Bank 1
DIMM 2B
Bank 2
DIMM 2A
Bank 2
DIMM 3B
Bank 3
DIMM 3A
Bank 3
DIMM 4B
Bank 4
DIMM 4A
Bank 4
M i c
BIOS
Instead of pins, this "jumper" consists of
Pins 1-2 will
Watch Dog
J 2 4
J P F
FAN7
Force
P W
CPU1
CPU2
SATAI
2
C
JPS1
6 3 0 0 E S B
6041
U S B 2 / 3
J D 2
SATA0 SATA1 SATA0 SATA1 SATA2 SATA3
2-23
Always remove the AC power cord
Do not use the PW_ON connector to
Jumper Settings (JWD)
Jumper
Position
Pins 1-2
Pins 2-3
J 1 D 1
WD
J L 1
Clear CMOS
Chapter 2: Installation
Watch Dog
Definition
WD to Reset
WD to NMI
Open
Disabled
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