Chapter 6 Checking LEDs
6-9
The I/O expansion module LEDs and their color definitions are shown in Table 6-5.
Note –
An SFP link status (L) LED is off if there is no connection or a failed
connection to this SFP.
6.3.3
Power Supply and Fan Module LEDs
The following figure shows the AC power supply and fan module.
Table 6-5
I/O Expansion Module LEDs
LED
Purpose
LED Color Definition
Activity
I/O activity of host
and disk ports
Off – Not busy (no I/O activity)
Blinking green – Busy (active I/O)
I/O module
Status of I/O
module
Solid green – Power-up successful and SES
chip has successfully read on-board
temperature and voltage sensors
Amber – Expansion unit powering up, or
failed voltage or temperature sensor
Off - Expansion unit is not powered up
SFP link (L)
SFP link status
Solid green – Active good FC Connection
Off – Empty or failed FC connection
SFP speed (S)
SFP speed status
Solid green – 2 Gbit
Off – 1 Gbit
Table 6-6
Power Supply LEDs
Purpose LED
LED
Color
Definition
Monitors the DC output voltage
within tolerance specification.
Overcurrent protection shutting down
any voltage output is also displayed.
Voltage thresholds:
+5 VDC +/–.25 VDC
+12 VDC +/–.6 VDC
Current thresholds:
+5 VDC 35A
+12 VDC 25A
Solid green
Solid amber
Power supply and fans are
good.
Failed: One or more output
voltages out of range or one
or both fans is rotating at less
than 4000 RPM.
