Ais/Yel" Indicator Is Flashing; No "Power" Light - ADTRAN TRACER User Manual

61280.003L1-1B
If problems persist after you have followed the Recommended
Actions, contact ADTRAN Technical Support at (800) 726-8663.
"AIS/YEL"
This alarm is activated when the T1 interface at the remote end is
not receiving a T1 signal (it is in Red alarm). In this circumstance
the interface with the flashing AIS/YEL indicator is transmitting
an AIS (keep alive) signal.
P
OSSIBLE
• No DS1/DSX-1 signal or a degraded DS1/DSX-1
signal is present at the DS1/DSX-1 input. ..................................... 1,2
• The connection at the T1 input or DS1/DSX-1
equipment is faulty. ............................................................................ 2
R
ECOMMENDED
1. Verify the presence of a DS1/DSX-1 signal at the T1 monitor jack
using a T1 test set.
Verify that all cables and connectors are properly wired.
2.
N "P
O OWER
P
OSSIBLE
• DC voltage is not applied. ........................................................... 1,2,4
• The polarity of the power connection is reversed. ............................ 2
• The AC transformer is not functioning properly. .......................... 3,4
• The AC transformer is not connected to the DC
jack on the BBP, or not connected to AC outlet. ............................ 3,4
R
ECOMMENDED
1. Verify that the DC voltage is between 21-56 VDC (±).
2. Verify that negative voltage is applied to the negative terminal, and
positive voltage applied to the positive terminal.
Verify that the "Power" light is lit on the AC transformer.
3.
4. Verify that the AC transformer is connected to an AC power cord
on the transformer, and connected to the DC jack on the BBP. Verify
that the AC power cord is connected to an AC outlet. Verify that the
AC outlet has proper AC voltage present.
4/12/99
I M P O R T A N T
INDICATOR IS FLASHING
C
AUSE
A :
CTIONS
" L
IGHT
C
AUSE
A :
CTIONS
P 43
AGE
T
ROUBLESHOOTING
R A
ECOMMENDED CTION
(
SEE LIST BELOW
R A
ECOMMENDED CTION
(
SEE LIST BELOW
)
)