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Appendix F Status Checks with LEDs
F.1. LED Type
219
C122-E175-01EN
(*1) If Alarm LED is turning on orange, the FANM with the particular LED fails. Even though Alarm LED
remains off, SEL may be displayed which indicates the FANM error due to detecting not enough fan
rotation by preventive fan monitoring function.
(*2) There is a CSS LED on an OPL, not a PSU.
F.1.3 FANU
The FANU comes equipped with the following LED.
TABLE F.4 FAN LED
LED type
Color
Function
FANM#0 Alarm
Orange
Indicates state of FANM#0.
Power/Alarm
Green
Indicates power state of PSU supplying power to FANU.
FANM#1 Alarm
Orange
Indicates state of FANM#1
TABLE F.5 Power status and FANU LED display
Status
FANM#0 Alarm
Power/Alarm
FANM#1 Alarm
OPL CSS (*2)
PSU AC input is off.
Off
Off
Off
Off
AC input is on, and the PSU is off.
Off
Blinking in green
Off
Off
AC input is on, and the PSU is on.
Off
On (green)
Off
Off
FANU temperature error is predicted.
Off
On (green)
Off
On (yellow)
FANU temperature error is detected or
the power system error in a PSU is
predicted.
Off
Blinking in green
Off
On (yellow)
The power system of a FANU failed.
Off
On (yellow)
Off
On (yellow)
FANM#0 error occurs
Off or On (Orange)
(*1)
Off
Off
On (yellow)
FANM#1 error occurs
Off
Off
Off or On (Orange)
(*1)
On (yellow)
(*1) If Alarm LED is turning on orange, the FANM with the particular LED fails. Even though Alarm LED
remains off, SEL may be displayed which indicates the FANM error due to detecting not enough fan
rotation by preventive fan monitoring function.
(*2) There is a CSS LED on an OPL, not a PSU.
F.1.4 SB
SB comes equipped with the following LED.
TABLE F.6 SB LED
LED type
Color
Function
Power
Green
Indicates power state in a SB.
Alarm
Orange
Indicates whether there is error or not in a SB.
Location
Blue
Specifies a SB.
- Can be arbitrarily set to blink or turned off by the user.
- Indicates the component undergoing maintenance when
Maintenance Wizard is running.
TABLE F.7 SB status and SB LED display
Status
Power
Alarm
Location
AC off and partition power Off
Off
Off
Off
Partition including SB Power On
On (green)
Error of SB
On (orange)
Identifying SB
(Turn on by Maintenance Wizard)
On (blue)
F.1.5 IOU
IOU which is IOU_1GbE or IOU_10GbE comes equipped with the following LED.