Chapter 3: Installation
3-19
Power Button
Blue_UID_LED
1
Reset Button
2
Power Fail LED
HDD LED
Power LED
Reset
PWR
Red_LED_Cathode/PWR
Fail/OH/Fan Fail/5V SB
Ground
Ground
19
20
3.3V
Ground
NMI
Key
NIC2 (Activity) LED
NIC1 (Activity) LED
NIC2 (Link) LED
NIC1 (Link) LED
3.3V SB
3.3V
Key
X8QB6/X8QBE
Rev.1.01a
Power Fail LED
The Power Fail LED connection is
located on pins 5 and 6 of JF1. Re-
fer to the table on the right for pin
defi nitions.
Overheat (OH)/Fan Fail/PWR Fail/
UID LED
Connect an LED cable to pins 7 and
8 of JF1 to use the Overheat/Fan Fail/
Power Fail and UID LED connections.
The Red LED on pin 7 provides warn-
ings of overheat, fan failure or power
failure. The Blue LED on pin 8 works
as the front panel UID LED indicator.
The Red LED takes precedence over
the Blue LED by default. Refer to the
table on the right for pin defi nitions.
OH/Fan Fail/ PWR Fail/Blue_UID
LED Pin Defi nitions (JF1)
Pin# Defi nition
7
Red_LED-Cathode/OH/Fan Fail/
Power Fail5.5V.SB
8
Blue_UID LED
OH/Fan Fail/PWR Fail
LED Status (Red LED)
State Defi nition
Off
Normal
On
Overheat
Flashing
Fan Fail
B
A. Front UID LED (Blue)
B. OH/ Fail/PWR Fail LED (Red)
C. PWR Supply Fail
A
C
PWR Fail LED
Pin Defi nitions (JF1)
Pin# Defi nition
5
3.3V
6
PWR Supply Fail