User`s manual

ANCB LEDs Description and Operation, Continued
During normal operation the Green LED for ADHA or ADHB will blink to
indicate either receive or transmit activity on the ANG_EN channel. If a
message retry is sent the Yellow LED will blink.
ADHA and ADHB -
The ADHA and ADHB LEDs are status indicators. During reset all of the
LED’s will blink for ½ second while the board goes through self-test. If an
error is detected during the self-test period the Red FAULT LED will
remain on and the Yellow WARN LED will blink the detected error code.
Only the Channel A ADHA LED’s will display FAULT codes. Use the
following table to determine the error condition.
NUMBER
of Blinks Type of Error Corrective Action
1 RAM FAILURE Replace Board
2 FLASH FAILURE Reload Firmware or Replace
Board
3 ETHERNET FAILURE Replace Board
4 DataNET FAILURE Replace Board
5 OTHER HARDWARE FAILURE Replace Board
6 DUPLICATE IP Change Board IP address
7 CROSS LINK FAILURE Check Cross Link Cable
8 WRONG LOOP Change Loop Number
9 INVALID JUMPER Check J10 and J11
CONFIGURATION Connections
10 DUPLICATE UNIT NUMBER Change Unit Number
FAULT errors can only be cleared with a board reset.
IMPORTANT
If either of the LOCKA or LOCKB LED’s is on, the board must be reset.
This is indication that the board left the 455Khz Line Contention signal on
for more than +/- 2.3 seconds.
LOCKA and LOCKB -
These LEDs are used to indicate ANG_EN status and activity. The
Green LED will blink whenever a message is received or transmitted on
the respective channel. The Red LED will blink if an error has occurred
on the channel.
E1A / E1B OK ER -
2000590-001 Troubleshooting • 51