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Installation Manual
Quidway S3900 Series Ethernet Switches
Chapter 1 Product Overview
Huawei Technologies Proprietary
1-22
LED
Mark
Color
Indicates
POST
running
PWR flashes
green
The POST test ID (in the range
1 to 9).
PWR flashes
yellow
POST
failed
PWR stays red
POST test ID of the failed test.
Software
loading
PWR flashes
green
A bar rotates clockwise around
the display.
Fan
failure
PWR stays red
“F”, meaning the FAN fails.
7-
segment
digitron
display
Unit
Unit id
Button released
UNIT ID in the fabric; and for a
standalone unit, “1”
ON
A 100 Mbps link is present.
Green
Flash
Data is being received/sent on
the port
Flashing yellow
(3 Hz)
The port fails POST.
Speed
OFF
No link is present.
ON
The port is operating in full
duplex mode
Green
Flash
Data is being received/sent on
the port
Flashing yellow
(3 Hz)
The port fails POST.
100Base
SFP port
LED
Duplex
OFF
No data is being received/sent
on the port.