Technical Product Specification

Intel® Local Control Panel Intel® Server System SR1600UR TPS
52 Intel order number E45725-010 Revision 1.8
8.1 LED Functionality
The following table identifies each LED and describes its functionality.
Table 41. Control Panel LED Functions
LED
Color
State
Description
NIC1/NIC2
Activity
Green On NIC Link
Green
Blink
NIC Activity
Power/Sleep
(on standby power)
Green
On
Legacy power-on/ACPI S0 state
Blink
1,4
Sleep/ACPI S1 state
Off
Off
Power-off/ACPI S4 or S5 state
System Status
(on standby power)
Green
On
Running/normal operation
Blink
1,2
Degraded
Amber
On
Critical or non-recoverable condition.
Blink
1,2
Non-critical condition.
Off
Off
POST/system stop.
Disk Activity
Green
Random blink
Provides an indicator for disk activity.
Off
Off
3
No hard disk activity
System
Identification
Blue On Identify active via command or button.
Off
Off
No Identification.
Notes:
1. Blink rate is ~1 Hz at 50% duty cycle.
2. The amber status takes precedence over the green status. When the amber LED is on or blinking, the
green LED is off.
3. Off when the system is powered off (S4/S5) or in a sleep state (S1).
4. The power LED sleep indication is maintained on standby by the chipset. If the system is powered down
without going through the BIOS, the LED state in effect at the time of power-off is restored when the system
is powered on until the BIOS clears it. If the system is not powered down normally, it is possible that the
Power LED is blinking while the system status LED is off. This is due to a failure or configuration change
that prevents the BIOS from running.
The current limiting resistors for the power LED, the system fault LED, and the NIC LEDs are
located on the Intel
®
Server Board S5520UR.
8.1.1 Power/Sleep LED
Table 42. SSI Power LED Operation
State
Power Mode
LED
Description
Power-off
Non-ACPI
Off
System power is off, and the BIOS has not initialized the chipset.
Power-on
Non-ACPI
On
System power is on, but the BIOS has not yet initialized the chipset.
S5
ACPI
Off
Mechanical is off, and the operating system has not saved any
context to the hard disk.
S4
ACPI
Off
Mechanical is off, and the operating system has saved context to the
hard disk.
S3-S1
ACPI
Slow blink
1
DC power is still on, and the operating system has saved context and
gone into a level of low-power state.
S0
ACPI
Steady on
System and the operating system are up and running.
Note:
1. Blink rate is ~ 1 Hz at 50% duty cycle.