Technical Product Specification

Intel® Server System SR1625UR TPS 9BIntel® Local Control Panel Functionality
Revision 2.0 Intel order number E47487-012
67
10.1 LED Functionality
The following table identifies each LED and describes their functionality:
Table 56. LCP 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 that is 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.
10.1.1 Power/Sleep LED
Table 57. 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. The operating system has saved context to the
hard disk.
S3-S1 ACPI Slow blink
1
DC power is still on. 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 with at 50% duty cycle.