Acer R720 Series Manuel D’Utilisation

15

* For more information on how to troubleshoot during a system hang, refer to the 
Diagnostic POST Code table on page 149. 

C

System ID 
indicator

ID

Blue, on

System identification is 
active. 

Blue, off

System identification is 
disabled.

D

System 
status/fault 
indicator

Ready

Green, on

System booted and ready. 

Degraded

Green, 
blinking

CPU or DIMM disabled.

Critical 
condition

Amber, on

Critical power supply, 
blower, voltage, or 
temperature failure. 

Non-
critical 
condition

Amber, 
blinking

• Redundant power 

supply or blower 
failure. 

• Non-critical blower, 

voltage, and 
temperature failure. 

E

LAN port 
indicators 
(left)

Speed Green/

Amber, Off

10 Mbps connection

Green, On

100 Mbps connection

Amber, On

1000 Mbps connection

(right)

Status 

Green, On

Network link is detected.

Green, Off

No network connection.

Green, 
Blinking 

Transmit or receive 
activity.