®
14
IR Troubleshooting Guide
NOTE:
Due to the many variables in a given installation, the troubleshooting
measures you may need to take can vary in different situations.
Each installation is different due to the number of IR Receivers, length of wire
runs, type of wire, amount of ambient IR noise present, etc….
Therefore, your troubleshooting measures for a particular job can range from
nothing at all, to any combination of the solutions listed below.
Symptom #1: DIM or NO Talkback LED during IR reception or reduced
operational range.
Cause
Solution
1.
Weak batteries in transmitting
remote.
Replace batteries.
2.
Bad Emitter or no Emitter
plugged into Connecting Block.
Test Emitter and verify wiring.
3.
Signal wire between IR Re-
ceiver and the Connecting
Block is open.
Recheck wiring.
4.
Power Supply not putting out
proper voltage.
Verify supply is a 12VDC regulated
supply reading between 11.5 to
13VDC under load. Use the included
Power Supply, Model 781ERGPS
(12VDC Regulated, 200mA) or
782ERGPS (12VDC Regulated,
1.2A)
5.
Output from the IR Receiver/
Connecting Block is connected
to a high impedance IR input
jack on a component.
If you are using a passive Con-
necting Block, such as a 789-44,
and the system is not working, try
the amplified Connecting Block,
model 791-44. Put one of the small
plastic case jumpers supplied with
the block on the pins next to the
Emitter jack. This will provide the
IR-in jack on the component with a
hotter signal.
6.
IR Receiver is inoperable.
Replace IR Receiver.
