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CMOS Clear
JBT1 is used to clear CMOS, which will also clear any passwords. Instead of pins, this jumper
consists of contact pads to prevent accidentally clearing the contents of CMOS.
To Clear CMOS
1. First power down the system and unplug the power cord(s).
2. Remove the cover of the chassis to access the motherboard.
3. Remove the onboard battery from the motherboard.
4. Short the CMOS pads with a metal object such as a small screwdriver for at least four
seconds.
5. Remove the screwdriver (or shorting device).
6. Replace the cover, reconnect the power cord(s), and power on the system.
Note: Clearing CMOS will also clear all passwords.
Do not use the PW_ON connector to clear CMOS.
VGA
COM1
UID
BMC
J19
JPCIE1
J18
BMC_HB
_LED1
CPLD
BIOS
JBT1
PCH
SXB2
J20
CPU2
JF1
BIOS
LICENSE
CPU3
J26
FAN6
FAN5
IPMI_LAN
USB 2/3(3.0)
JUSB3
J21
JSTBY1
1
I-SATA4~7
JUSB1
J22
JBAT1
S-SATA0~3
I-SATA0~3
PSU2
J25
CPU1
IPMI CODE
X X
X11QPH+
REV.1.01
BAR CODE
CPU4
55
PSU1
J24
J29
J30
Chapter 2: Installation
JBT1 contact pads
1. Clear CMOS
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