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08905105A - 4 -
IR Troubleshooting Guide
NOTE: Due to the many variables in a given installation, the troubleshooting countermeasures you will
have to take may vary from job to job. Each installation is different due to the number of IR receivers in
use, length of wire runs, type of wire, amount of ambient IR noise present, etc…. Therefore, your
countermeasures for a particular job will range from nothing at all, to any combination of the solutions listed
below.
Model #’s
IR Receivers: Model #’s 291, 480, 490, & 780 Series
Symptom #1:
DIM or NO Talk Back 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 Receiver 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. Should be using
Power Supply Model 781RG
(12VDC Regulated, 200mA) or 782-
00 (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
connecting 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 Receiver.
7.
(XTRALINK Only) RF Amplifier is being used
on same COAX Line anywhere between the
Coupler (CPL94) and Injector (INJ94).
Need to use a Bypass Kit (model
BYPASS94 Kit) to route the IR
control signals around the
amplifier(s).