GAI-Tronics ITA2000A ITA2000A Series Tone Remote Adapter with Scanning User and Installation Manual - Manual (Page 42)

Troubleshooting ITA2000A Series Tone Remote Adapter
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Problem Possible Solution
There is no TX audio. Verify that the radio is being keyed when transmitting to the ITA2000A
from a tone remote. If the radio is not being keyed, refer to the section
above describing the radio not being keyed.
Ensure that the ITA2000A audio output (J2-12) is connected to a point in
the radio that causes the audio to be transmitted when the radio is keyed.
Verify that the ITA2000A TX output level is properly set and there is no
more than 20 dB of loss in the telephone line. If appropriate, adjust the
transmit audio output or desk set microphone sensitivity.
ITA2000A does not scan. Ensure that the proper input polarity of the CSQ detect has been set with
SW1-2.
Ensure that SW2-1 through SW2-4 are set according to the maximum
number of channels to be scanned.
If SW1-8 is configured for resume scan after PTT, ensure that PTT is
generated by the remote.
Ensure that there is no off-hook mic or shorting plug connected to the mic
port of the ITA2000A, and that the monitor pin of the accessory connector
is not asserted.
ITA2000A does not
transmit or receive. Ensure that there is a telephone line audio path from the ITA2000A to the
tone remote desk set.
Check that neither fuse is open on the telephone line.
Ensure that the ITA2000A is connected to a dc or ac (with a dc power
supply option) power source.
A tone is being output on
the phone line during and
accessory/desk-mic PTT or
Monitor assertion. In Scan mode, this feature allows for the clearing of status and lock-out of
any connected tone remotes.
In Conventional mode, this feature allows the lock-out of any connected
tone remote. It can be disabled by placing SW1-8 in the down position.
Fuse Replacement
CAUTION
For continued safe operation, replace fuses with the same type.
 Fuse F1 (power supply) is 1 amp, 250 V, 5 mm  20 mm.
 Line fuses (F1 and F2) are Bussmann C515S 1.25A 2AG SB.