Troubleshooting - LG-Nortel ARIA SOHO Installation Manual

ARIA SOHO Hardware Description and Installation Manual

TROUBLESHOOTING

PROBLEM
SYSTEM POWER FAILURE
SYSTEM DOES NOT OPERATE
DKTU DOES NOT OPERATE
SLT DOES NOT OPERATE
CO LINE OPERATION FAILURE
NOISE ON EXTERNAL MOH
AND PAGING PORT
CAUSE/SYMPTOM
Power short circuit
board(s)
LD1-4 LEDs on the MBU are All ON
or All OFF
Power short circuit
board(s)
Bad board connection
System database not working
Bad extension circuit
Bad connection between the MBU
/CHB308 and DKT
Proximity of DKT and System
Bad DKT
Bad MBU /CHB308/CSB316 or
SLIB8 board
Bad connection between the MBU
/CHB308/CSB316 or SLIB8 and
SLT
ANCR fail
Bad connection
Induced noise on the wire between
the System and the amplifier
Excessive input level from the
external music source
54
7 T
T
R O U B
R O U B
Exchange the malfunctioning board for
in some
one in good working condition.
Dust each board with a dry cloth.
Check the PSU fuse.
Replace the PSU with an identical
one.
Check the connection of each board
in some
with the MBU.
Check the PSU.
Check for a short circuit on the MBU
or other boards.
Press the Reset button when the DIP
switch (SW1for database protection) is
in the default position.
Exchange the malfunctioning board for
one in good working condition.
Check the connection between the
SLT line and DKT on MDF, and fix any
mismatching.
Repair any
between the System and DKT.
Check the distance between the
MBU /CHB308 and the 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.
Exchange the board for one in good
working condition.
Check that the board connection
between the lines of the SLT and DKT
on the MDF, and fix any mismatching.
Check the U8 (Voice processing and
Tone detection device).
Check all connections.
Make sure a shielded cable is in use
as the connection wire between the
system and the amplifier.
Decrease the output level of the
external music source by using the
volume control on the music source.
Issue 1
Mar, 2007
L E S H O O T I N
L E S H O O T I N
SOLUTION
broken connection
G
G