Intel TIGPT1U - Carrier Grade Server Specification Download Page 43

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Intel

Carrier Grade Server TIGPT1U TPS

Extended Front Panel System Board

Revision 1.0

4.4.4

System Fault LEDs

There are four front panel system fault LEDs. The function of these system fault LEDs is
described in the following table.

Table 4-4. Front Panel System Fault LED Description

Fault LED

Function

Critical

This amber or red LED alarm is illuminated via the Server Management Bus
(SMBus) and may only be turned off via SMBUS control. When continuously
lit, it indicates the presence of a Critical System Fault. A critical system fault
is an error or event that is detected by the system with a fatal impact to the
system. In this case, the system cannot continue to operate. An example
could be the loss of a large section of memory, or other corruption, that
renders the system not operational. The front panel critical alarm relay will
be engaged.

Major

This amber or red major alarm is illuminated via SMBUS bus and may be
turned off via SMBUS control or alarm connector reset. When continuously
lit, it indicates the presence of a Major System Fault. A major system fault is
an error or event that is detected by the system that has discernable impact
to system operation. In this case, the system can continue to operate, but in
a “degraded” fashion (reduced performance or loss of non-fatal feature
reduction). An example could be the loss of one of two mirrored disks. The
front panel major alarm relay will be engaged.

Minor

This amber LED minor alarm is illuminated via SMBUS bus and may be
turned off via SMBUS control or alarm connector reset. When continuously
lit, it indicates the presence of a Minor System Fault. A minor system fault is
an error or event that is detected by the system but has little impact to actual
system operation. An example would be a correctable ECC error. The front
panel minor alarm relay will be engaged.

Power

The amber power alarm is illuminated via SMBUS bus or SYS_FLT_LED_L
signal and may only be turned off via SMBUS control. When continuously lit,
it indicates the presence of a Power System Fault. The front panel power
alarm relay will be engaged.

4.4.5

LED Color Selection

The Extended Front Panel Board (XFPB) supports population options for two different SKUs,
the Intel

SKU and an OEM SKU. The Intel

SKU supports a white ID LED and amber HDD

fault LEDs. The OEM SKU supports a blue ID LED and red hard disk drive (HDD) fault LEDs.
Selecting between the two SKUs are done during board build. For an Intel

SKU, install a white

LED at location DS4J2 and install n-FETs at locations Q5W6 and Q5W2. For an OEM SKU,
install a blue LED at location DS4J2 and remove n-FETs at locations Q5W6 and Q5W2. LED
color selection to support the Intel

SKU and OEM SKU are outlined in the following table:

Table 4-5. LED Color Selection

Board

SKU

LED Color

Board Location Reference

Designator

Board Population Option

OEM

ID Blue

DS4J2

Install iPN 697565-010