AMX AXB-TCR - Manual (Page 15)

Installation and Wiring
11 AXB-TC and AXB-TCR Television Controllers (& Receivers)
Television Power Sensor Adjustment
After connecting the CC-IR to the television, the power sensing POT, on the rear of the television
controller (see FIG. 1 on page 1), may require adjustment to detect the television's power status:
Use a Phillips-head screwdriver and flat-blade tool (non-conducting) to adjust the POT screw.
1. Turn the television off.
2. Locate the POT screw on the circuit card and turn it clockwise 20 full turns or until it clicks. The red
TV Sensor indicator, located on the front panel, should be dark.
3. Turn the television on.
4. Turn the POT screw counterclockwise until the TV Sensor indicator lights. Then, turn the POT
screw counterclockwise one full turn.
5. Turn television power off. If the TV Sensor indicator is lit, turn the POT screw clockwise until the
indicator goes dark.
6. Reattach the enclosure and refasten the two screws.
IR Signal Attenuation Adjustment
If you experience television control problems after connecting a CC-IRC IR Emitter to the television, the
television may be too sensitive to interpret the IR signals generated by the television controller. You can
use the IR signal attenuation POT, located inside the television controller (FIG. 9), to decrease the
strength of the IR signal.
Refer to Internal Jumper Settings section on page 5 to put the AXB-TC or AXB-TCR in IR attenuation
mode.
Use a Phillips-head screwdriver and flat-blade tool (non-conducting) to adjust the POT screw.
1. Remove the two Phillips-head screws on the bottom of the television controller enclosure.
2. Pull the two enclosure halves apart and set the bottom portion of the enclosure on a flat surface.
3. Locate the POT screw on the circuit card and turn it counterclockwise with a flat-blade tool until it
stops.
FIG. 9 IR signal attenuation POT location
front
IR signal attenuation POT
Static electricity can damage electronic circuitry. Discharge any static electricity from
your body by touching a grounded metal object before adjusting the POT.