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Overheat (OH)/Fan Fail
Connect an LED cable to pins 7 and 8 of the Front Control Panel to use the Overheat/Fan
Fail LED connections. The LED on pin 8 provides warnings of overheat or fan failure. Refer
to the tables below for pin definitions.
OH/Fan Fail Indicator
Status
Pin#
Definition
Off
Normal
On
Overheat
Flashing
Fan Fail
NIC1/NIC2 Activity LED
The NIC (Network Interface Controller) LED connection for LAN port 1 is located on pins 11
and 12 of JF1, and the LED connection for LAN port 2 is on pins 9 and 10. Attach the NIC
LED cables here to display network activity. Refer to the table below for pin definitions.
PWR
Power Button
Reset
Reset Button
3.3V Stby
3.3V Stby
3.3V Stby
LAN1/LAN2 LED
Pin Definition (JF1)
Pin#
Definition
9
Pull up to +3.3 Stby
10
NIC2 Activity LED
11
Pull up to +3.3 Stby
12
NIC1 Activity LED
1
2
Ground
Ground
3.3V
PWR Fail LED
OH/Fan Fail LED
UID
NIC2 Activity LED
NIC1 Activity LED
HDD LED
PWR LED
3.3V
15
16
33
Chapter 2: Installation
OH/Fan Fail LED
Pin Definitions (JF1)
Pin#
Definition
7
Blue LED
8
OH/Fan Fail LED
1. OH/Fan Fail LED
2. NIC2 Activity LED
3. NIC1 Activity LED
1
2
3
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