Technical Product Specification

Intel® Server Board S5520UR and S5520URT TPS Connector/Header Locations and Pin-outs
Revision 1.9 Intel order number E44031-012
99
Color
State
System Status
Description
Amber Solid on Fatal
Fatal alarm – system has failed or shut down:
1. DIMM failure when there is one DIMM present and no good
memory is present
1
.
BIOS Detected
2. Run-time memory uncorrectable error in non-redundant mode
1
.
3. CPU configuration error (for instance, processor stepping
mismatch).
1. CPU IERR signal asserted.
Integrated BMC Detected
2. CPU 1 is missing.
3. CPU THERMTRIP.
4. No power good – power fault.
5. Power Unit Redundancy sensor – Insufficient resources offset
(indicates not enough power supplies are present).
Off
N/A
Not ready
AC power off.
Notes:
1. The BIOS detects these conditions and sends a Set Fault Indication command to the Integrated BMC to
provide the contribution to the system status LED.
2. Support for upper non-critical limit is not provided in default SDR configuration.
However if a user does
enable this threshold in the SDR, then the system status LED should behave as described.
6.4.7 Chassis ID LED
The chassis ID LED provides a visual indication of a system being serviced. The state of the
chassis ID LED is affected by the following:
 Toggled by the chassis ID button
 Controlled by the Chassis Identify command (IPMI)
 Controlled by the Chassis Identify LED command (OEM)
Table 51. Chassis ID LED Indicator States
State
LED State
Identify active via button Solid on
Identify active via command
~1 Hz blink
Off
Off
There is no precedence or lock-out mechanism for the control sources. When a new request
arrives, all previous requests are terminated. For example, if the chassis ID LED is blinking and
the chassis ID button is pressed, then the chassis ID LED changes to solid on. If the button is
pressed again with no intervening commands, the chassis ID LED turns off.
6.5 Bridge Board Connector
For use in a supported Intel
®
Server Chassis, the server board provides a 120-pin high-density
bridge board connector (J4H2) to route control panel, midplane, and backplane signals from the
server board to the specified system board. The following table provides the pin-outs for
this connector.