Supero SuperWorkstation 7046A-3, User Manual

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5-20
S
uper
W
orkstation 7046A-3/7046A-T User's Manual
Overheat/Fan Fail LED (JOH1
)
The JOH1 header is used to connect
an LED to provide warnings of chas-
sis overheat. This LED will also blink
to indicate a fan failure. Refer to the
table on right for pin defi nitions.
Overheat LED
Pin Defi nitions
Pin# Defi nition
1 5vDC
2 OH Active
5-10 Jumper Settings
Explanation of Jumpers
To modify the operation of the
serverboard, jumpers can be used
to choose between optional settings.
Jumpers create shorts between two
pins to change the function of the con-
nector. Pin 1 is identifi ed with a square
solder pad on the printed circuit board.
See the serverboard layout pages for
jumper locations.
Note: On a two-pin jumper, "Closed"
means the jumper is on both pins and
"Open" means the jumper is either on
only one pin or completely removed.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
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,
First power down the system and unplug the power cord(s). 1.
With the power disconnected, short the CMOS pads with a metal object such 2.
as a small screwdriver.
Remove the screwdriver (or shorting device). 3.
Reconnect the power cord(s) and power on the system. 4.
Note: Do not use the PW_ON connector to clear CMOS.