Cmos Clear; Watch Dog Enable/Disable - Supermicro X8DTU User Manual

X8DTU/X8DTU-F User's Manual

CMOS Clear

JBT1 is used to clear CMOS. Instead of pins, this "jumper" consists of 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.
Always remove the AC power cord from the system before clearing CMOS.
Note: For an ATX power supply, you must completely shut down the sys-
tem, remove the AC power cord and then short JBT1 to clear CMOS.

Watch Dog Enable/Disable

Watch Dog (JWD) is a system monitor that
can reboot the system when a software ap-
plication hangs. Close Pins 1-2 to reset the
system if an application hangs. Close Pins
2-3 to generate a non-maskable interrupt
signal for the application that hangs. See the
table on the right for jumper settings. Watch
Dog must also be enabled in the BIOS.
Fan8
(CPU2 Fan) P2-DIMM3A
P2-DIMM3B
P2-DIMM2A
P2-DIMM2B
P2-DIMM1A
PHY
P2-DIMM1B
CPU2
LAN CTRL
JPL1
SXB2: PCI-E 2.0 x 8
J1
UIOP
J2
SXB1: PCI-E 2.0 x 16
J10
JPI2C
CPU1
Battery
X8DTU/-F
JBAT1
Buzzer
SP1
P1-DIMM1B
P1-DIMM1A
P1-DIMM2B
P1-DIMM2A
P1-DIMM3B
P1-DIMM3A
J3 SXB3: PCI-E 2.0 x 8 in x 4 Slot
LE1
Intel I5520
ME Mode JOH1
JP3
North Bridge
T-SGPIO2
J17
JPRST1
JTAG Of CPLD
B
JWD
CPLD
JPB
Intel ICH10R
JPG1
South Bridge
BMC CTRL
A
BIOS USB2/3 JLPC1
JBT1
(ME Rec.)
COM2
Fan5
Fan6
JI2C1 USB4/5
IPMB
USB6 USB7 J12
JI2C2
2-28
Watch Dog
Jumper Settings (JWD)
Jumper Setting Defi nition
Pins 1-2 Reset
(default)
Pins 2-3 NMI
Open Disabled
A. Clear CMOS
B. Watch Dog Enable
Fan1
Fan2
Fan3
Fan4
JF1