DWEX DIGITAL LOUD-SPEAKING EXPLOSION PROOF CALL STATION
User Manual
armtel.com
page 31/40
© Armtel
2.6.4 Troubleshooting
Possible problems and their solutions are given in Table 9.
Table 9 – Possible problems of DWEx and their solutions
Problem
Possible causes
Solutions
No LED backlighting,
communication impossible
No power supply
Check power supply to the
terminal block module
The main board is not
connected to KIB board
Check the boards connection,
verify that the cable is intact
Frequent flashing of LED
indicators. Communication
impossible
Communication with the
central exchange is lost
Check connection with the
subscriber’s exchange and its
operation ability
Wrong configuration of the
subscriber’s device
Check configuration of the
system
Socket «
Х
2» of KIB board is
not connected or defective
Connect «
Х
2» or correct
the socket
No LED backlighting
Socket «
Х
2» of KIB board is
not connected or defective
Connect «
Х
2» or correct
the socket
LEDs flash one by one
sequentially
No connection between KIB
and the main board block
Check connection between
KIB and the main board block
via interface cable, verify that
the cable is intact
The caller does not hear/
The called subscriber is not
heard
Speaker volume (microphone
or handset sensitivity) at
minimum
Adjust the volume (sensitivity)
with the special controller
Cable of the speaker (micro-
phone, handset) is not
connected or defective
Check connection and
integrity of the speaker
(microphone, handset) cable
