GAI-Tronics IDR1000A, User And Installation Manual

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Troubleshooting IDR1000A DC Remote Desk Set User and Installation Manual
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Problem Possible Solution
There is continuous noise
in the receive audio. The dc remote adapter must be connected to a muted and de-emphasized
receive point in the station receiver.
If receiver audio is derived from a detector or discriminator, continuous noise
is heard unless the dc remote adapter has an internal squelch circuit.
Refer to the station and dc remote adapter manuals for more information.
No receive audio on local
speaker or handset. Ensure that the dc remote adapter is supplying audio onto the private circuit.
Ensure that the desk set’s local speaker is not muted. Muting is indicated by a
flashing frequency button.
There is no TX audio. Check to be sure that station transmitter is keyed when PTT is applied from
the desk set. If it is not, refer to the dc remote adapter or station manual.
Low TX audio. Verify that the desk set’s transmit output level is properly set and ensure that
there is no more than 20 dB loss in the private or leased line, which can cause
degradation of the audio signal.
If a leased line is being used and excessive losses are measured, contact your
local exchange carrier. Check the pot 4 setting.
Distorted TX audio. Verify that the dc remote adapter’s transmit audio output level is properly set
to match the station's rated transmit sensitivity. Refer to the station and dc
remote adapter manuals for proper setup procedures.
No audio on local
speaker. Ensure that the volume is not turned down all the way, and the handset is on-
hook. If receive audio is not switched to the local speaker when the handset is
on-hook, the handset may be defective or have a defective magnetic reed
switch.
The local speaker is muted. (Indicated by a flashing frequency button.)
Fuse Replacement
CAUTION
For continued safe operation, replace fuses with the same type:

F1 is a Bussmann GMA 750 mA FB fuse.

F2 is a Bussmann C515S 1.25A SB 2AG SB fuse.