Computer Hardware User Manual

Chapter 2: Installation
2-19
Power Button
OH/Fan Fail LED
1
NIC1 LED
Reset Button
2
Power Fail LED
HDD LED
Power LED
#3~4
#1~2
Vcc
Vcc/UID Switch
Vcc
Vcc/Blue UID LED
Ground
Ground
1920
Vcc
X
Ground
NMI
X
Vcc
NIC2 LED
Overheat (OH)/Fan Fail/Blue UID
LED
Connect an LED cable to the Blue UID
and OH/Fan Fail connections on pins
7 and 8 of JF1 to display blue UID
signals or to provide advanced warn-
ings for chassis overheat/fan failure.
Refer to the table on the right for pin
defi nitions.
Power Fail LED
The Power Fail LED connection is
located on pins 5 and 6 of JF1. Refer
to the table on the right for pin defi ni-
tions.
OH/Fan Fail LED
Pin Defi nitions (JF1)
Pin# Defi nition
7 Vcc/Blue UID LED
8 OH/Fan Fail LED
OH/Fan Fail Indicator
Status
State Defi nition
Off Normal
On Overheat
Flash-
ing
Fan Fail
PWR Fail LED
Pin Defi nitions (JF1)
Pin# Defi nition
5 Vcc
6 Ground
A
B
A. OH/Fan Fail LED
B. PWR Supply Fail
A