ATLAS 550 System Manual - Adtran

ATLAS 550 System Manual Section 2 Engineering Guidelines
Table 3. Description of ATLAS 550 LEDs
For these LEDs... This color light... Indicates that...
System Status
Power
System
Ethernet
Remote
Network Modules Status
Green the unit is on.
Off the unit is off.
Green (solid) no diagnosed system faults were found.
Green (fast blink) a flash download is in progress.
Yellow (solid)
Red (solid)
a fault was diagnosed, but the condition no longer exists.
The condition will be recorded in the system log.
an error condition with either the power supply or the
system temperature is present.
Red (fast blink) a fatal error occurred during flash download.
Off power is not currently supplied to the system.
Green (solid) the physical link is up.
Green (flashing) there is activity on the LAN.
Off the physical link is down - no Ethernet connection.
Yellow
OK Green (solid)
Test Yellow (solid)
Error Red (blink)
Alarm Red (solid)
a user is logged into the system via the ADMIN/CRAFT
port or via the ETHERNET port.
Off there are no users logged into the system.
the network interface is operating normally with error-free
operation. If the interface experiences alarms, the OK
LED remains off.
the interface is operating in a test mode. This includes a
self-test, a test pattern, or a test loopback. When
illuminated, this LED also indicates that normal data flow
is not occurring on the module ports.
an error such as BPV (bipolar violation), OOF (out of
frame), or CRC (cyclic redundancy check) has occurred.
an alarm condition has been detected. When the alarm
condition is no longer valid, the OK LED illuminates. To
view an alarm condition, select the active alarm menu
item. If the alarm conditions have been corrected, you
can view the alarm which caused the activation of the
ALARM LED in the system log.
61200305L2-1B © 2004 ADTRAN, Inc. 29