Niles Audio RVL-6 - Manual (Page 39)

Optical Feedback Loop
If you have an IR sensor in the same room as a flasher, and you have some low-level noise or interference, an
optical feedback loop can occur which will interfere with proper operation. Symptoms can include: poor IR
receiving range, intermittent operation or no operation.
Steps (19) through (22) provide instructions for eliminating optical feedback loops.
Start from Step One
In your installation you may be faced with a combination of the four problems or symptoms that are univer-
sal to all of the problems. Rather than trying to guess which problem you have, use a process of elimination.
The Troubleshooting section is designed to eliminate the most common problems first. If you start from Step 1
and methodically check everything you will find the problem in much less time than the troubleshooter who
makes random assumptions.
1) Test remote control
Verify that the remote control works by operating the equipment directly. If the remote does not operate your
system directly, replace the batteries of the remote control. Replace the remote control if necessary.
2) Flasher positioning
Flashers operate line-of-sight; be sure they are unobstructed and aimed at the front panel sensor windows of
your components.
3) 12V DC power supply
Press a ROOM SELECT button. The ROOM SELECT LEDs light. Note: There must be a module installed for the
room selected and the 12V DC wall adapter should be plugged into an unswitched AC outlet.
• LED flashes: Go to Step 11
• All LEDs off: Go to Step 4
4) Disconnect sensors
Disconnect all SENSOR/KEYPAD connectors and retest by pressing a ROOM SELECT button.
• LED flashes: Go to Step 6
• All LEDs off: Go to Step 5
5) Replace power supply
Either your power supply or your RVL-6 is defective. If you have another 12V DC power supply, first check that
it has the same polarity (+ on the tip, GND on the sleeve). Plug the new power supply in and observe the ROOM
SELECT LED as you press the ROOM SELECT button.
• LED Flashes: Congratulations. Remember to finish checking operation in all rooms.
• No LEDs: Return RVL-6 to your local Niles dealer for testing
6) Test each SENSOR/KEYPAD input.
One at a time, reconnect each of the sensor/keypad connectors. Each time you add another sensor/keypad con-
nector, check operation of the front panel select button.
• LED on: Repeat until all SENSOR/KEYPAD connectors have been reconnected, then Go to Step 10
• LED stops responding: You have identified the problem SENSOR/KEYPAD connector. Go to Step 7
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