5-18
S
UPER
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ERVER 7043M-8/7043M-6 Manual
5-9
Jumper Settings
Explanation of
Jumpers
T o m o d i f y t h e o p e r a t i o n o f t h e
motherboard, jumpers can be used
t o c h o o s e b e t w e e n o p t i o n a l
settings. Jumpers create shorts
between two pins to change the
function of the connector. Pin 1 is
identified with a square solder pad
on the printed circuit board. See
the motherboard layout pages for
jumper locations.
N o t e :
O n t w o p i n j u m p e r s ,
"Closed" means the jumper is on
and "Open" means the jumper is
off the pins.
Connector
Pins
Jumper
Cap
Setting
Pin 1-2 short
3 2 1
3 2 1
Main Power Override
I n s t e a d o f u s i n g t h e c h a s s i s
power on switch, you may close
jumper JP40 to apply power to the
system. This effectively disables
the power button from turning off
the system. See the table on the
right for jumper settings. The de-
fault setting is Open (normal).
Jumper
Position
Open
Closed
Definition
Normal
Force Power On
Power On
Jumper Settings
(JP40)
CMOS Clear
JBT1 is used to clear CMOS. Instead of pins, this jumper consists of contact
pads to prevent accidentally clearing the contents of CMOS.
To clear CMOS,
1) First shutdown the system and unplug the power cord(s).
2) With the power disconnected, short the CMOS pads with a metal object such
as a small screwdriver.
3) Remove the screwdriver (or shorting device).
4) Reconnect the power cord(s) and power on the system.
Note:
Do not use the PW_ON connector to clear CMOS.
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