Tait TB9100 - Page 92

92 Troubleshooting TB9100/P25 CG/P25 TAG Installation and Operation Manual
© Tait Limited March 2014
Power LED on control
panel is on, but nothing
else works
Panel is disabled Check that the control panel is enabled on the CSS
(Configure > Network Element > Miscellaneous)
No power or LEDs on
control panel
System control bus not
connected to control panel
Check I
2
C cable connections
Pins bent on 15-pin D-
range plug on subrack
Replace or repair D-range plug
Can’t send microphone
audio
Correct buttons have not
been pressed on the
control panel to select
either P25 or Analog mode
for the microphone
Check that correct mode is selected
P25 call being made, but
feature not enabled
Check using the CSS that there is a feature license
for the P25 common air interface.
Control panel behavior is
random, as if buttons are
being pressed
I
2
C cable is not connected
to PMU
Check the I
2
C cable connection to the PMU - if the
I
2
C cable is not connected to the PMU, the system
control bus is not properly terminated and will
account for any strange behavior
The base station appears to
make random
transmissions
CWID feature enabled No action: CWID transmissions are made according
to configuration settings
Supplementary services
don’t work
Features and permissions
have not been enabled
correctly
Check service profiles. The service profile attached
to the channel enables supplementary services on
the RF receiver. The service profile attached to the
calling profile enables supplementary services on
the analog line in.
PA has low power Channel is configured to
low power
Use the CSS to check the power settings
PA may have suffered
partial damage
Replace module and send faulty module for
servicing
Channel group interface
not working
The base station does not
have a voice networking
feature license
Obtain the required license and enable the feature.
Multicast address incorrect Check that the CSS still connects to the base
station, and that the multicast address is correct
a) keyed connectors were
not used
b) the analog line was
connected by mistake to
the Ethernet interface
c) E&M connection has
non-current limiting power
supply
Replace module and send faulty module for
servicing
Test tones can’t be heard IMBE does not pass on
tones higher than 400Hz
Ensure test tones are less than 400Hz
Symptom Possible Cause Action