Chassis Plans ATXN-5520, Техническое описание

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Specifications ATXN-5520 / ATXW-5520 Technical Reference
Chassis Plans
1-14
Ethernet LEDs and Ethernet Connectors
P1, P2, P3 and P4 Ethernet LEDs
The I/O bracket houses the four RJ-45 network connectors for Ethernet LAN1, LAN2, LAN3 and LAN2.
Each LAN interface connector has two LEDs that indicate activity status and Ethernet connection speed.
Listed below are the possible LED conditions and status indications for each LAN connector:
LED/Connector Description
Activity LED
This green LED indicates network activity. This is the LED closest to connector P12 on
the LAN connector.
Off No current network transmit or receive activity
On (flashing) Indicates network transmit or receive activity.
Link Speed LED This green/yellow LED identifies the connection speed. This is the LED farthest from
connector P12 on the LAN connector.
Off Indicates a valid link at 1000-Mb/s
On Indicates a valid link at 100-Mb/s.
RJ-45 Network
Connectors
The RJ-45 network connector requires a Connectors category 5 (CAT5) unshielded
twisted-pair (UTP) 2-pair cable for a 100-Mb/s network connection or a category 3
(CAT3) or higher UTP 2-pair cable for a 10-Mb/s network connection. A category 5e
(CAT5e) or higher UTP 2-pair cable is recommended for a 1000-Mb/s (Gigabit) network
connection.
Motherboard Status LEDs
LED1 and LED2 – Processor Power LEDs
LED1 is located just above the P28 CPU Fan1 connector in the lower right corner of the motherboard. LED2
is located near the center of the board and just above and to the left of memory DIMM socket BK02A. These
red LEDs are off during normal motherboard operations. If the LEDs are on, this indicates that the
processor‟s VCC voltage levels are below the required levels to maintain proper CPU operations.
LED3 and LED4 – Processor Thermal Throttling LEDs
The processor throttling LEDs for each CPU are labeled LED3 and LED4, and located to the right on the Intel
ICH10 Southbridge. LED3 indicates the thermal shutdown status of CPU2 and likewise LED4 monitors the
thermal of CPU1 as illustrated below:
LED Status Description
Off Indicates the processor is operating within acceptable thermal levels.
On (flashing)
Indicates the processor is throttling down to a lower operating speed due to rising CPU
temperature.
On (solid
orange)
Indicates the processor has reached the thermal shutdown threshold limit. The motherboard
is still operating, but a thermal shutdown may soon occur.
NOTE:
When a thermal shutdown occurs, the LED will stay on in systems using non-ATX/EPS power
supplies. The processor will cease functioning, but power will still be applied to the motherboard. In systems
with ATX/EPS power supplies the LED will turn off when a thermal shutdown occurs because system power
is removed via the ACPI soft control power signal S5. In this case, all motherboard LEDs will turn off;
however, stand-by power will still be on.