TYAN B4989, Service Manual, Page: 24 / 98

1.6.3 LED Definitions
Front Panel
LED State Color Description
On Green System is turned on
On Amber System is turned off
Power
LED
Off Off Power off
On Green HDD power on
Blinking Green HDD active
On Amber HDD error
Blinking Amber HDD rebuild
HDD LED
Random
Green/
Amber
HDD locate
Blinking Amber LAN is active
LAN LED
off off No LAN is linked
ID LED On Blue ID select on
Warning
LED
On Red
Fan fail/PSU fail/Over
temperature/Over voltage
Rear I/O LED
LED State Color Description
On Green Output On and OK
Blinking Green
AC present / Only 5Vsb on(PS
Off)
On Amber
No AC power to this PSU only
or Power supply critical event
causing a shutdown: failure,
fuse blown, OCP(12V),OVP(12
V), Fan failed
Blinking Amber
Power supply warning events
where the power supply contin-
-ues to operate: high temp,high
power / high current,slow fan.
Power sup-
ply module
Off Off
No AC power to all power suppl
-ies.
On Green 10Mb/100Mb/1000Mb linked
Blinking Green 10Mb/100Mb/1000Mb activity
RJ-45
Linkage/
Activity(left)
Off Off No LAN linked
On Amber 1000Mb linked/ activity
On Green 100Mb linked/activity
RJ-45
Linkage/
Activity(Right)
Off Off 10Mb mode or No LAN linked
16 Chapter 1: Overview