iPECS-MG Hardware Description and Installation Manual
Issue 1.1
Troubleshooting
August, 2010
82
8.
T
T
R
R
O
O
U
U
B
B
L
L
E
E
S
S
H
H
O
O
O
O
T
T
I
I
N
N
G
G
PROBLEM
CAUSE/SYMPTOM
SOLUTION
AC Power Fail
Assure Fuse/Breaker is operational.
Assure AC Power is delivered to AC
outlet.
Check the PSU Fuse
Check LD21, LD22 on the backplane, if
out, replace the PSU.
Check +5V, +30V Fail
Verify MPB is installed.
Assure no short circuits on any board by
removing one board at a time from the
KSU.
System power failure
LD4 LED OFF on the MPB
Check DC Output status on MB.
Short circuit in some board(s)
Bad board connection
Check the connection of each board with
the MPB by removing one board at a time
from the KSU.
System database corrupted
Press the Reset button when the
Dipswitch (SW1 for database protection) is
in the default position.
System does not operate
MPB operation
Check MPB status and SW1 position
Bad DTIB circuit
Replace the malfunctioning board.
Bad connection between the DSIU
/DTIB and DKT Terminals
Check the connection between the board
and the DKT. Assure proper wiring
terminations.
Repair any broken connection
between the Board and DKTs.
Installation Distance of DKT and
System
Assure the distance between the board
and DKT does not exceed specs.
DKT does not operate
Bad DKT
Plug the DKT into another extension port
that has been verified as working. If the
DKT still does not work properly, replace
the DKT.
Bad DSIU/SLIB
Exchange the Extension board.
SLT does not operate
Bad connection between the
DSIU/SLIB port and SLT
Check that the connection between the
board and the SLT.
CID/Tone Detection Fail
Check CID type assigned for CO line
Assure CID provided from carrier.
If one CO Line or board, replace the
board.
CO line operation failure
Bad connection
Check all connections.
