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Troubleshooting
DOES NOT TURN ON OR LED DOES NOT LIGHT UP:
• The power cables are not properly connected (terminals 12V, GND and REM).
• The power cables have a poor connection. Check the connections.
• REM without current. Check to see if the REM connection is receiving about
+12V of current.
• Poor ground connection. Check the connections.
REMOTE CONTROL NOT SYNCHRONIZED WITH THE STM 1003:
• Follow the steps for "Synchronizing with the STM 1003";
• Low battery in the control. Follow the steps for "Replacing the TXM Control
Battery"
NO AUDIO SIGNAL:
• LEVEL controls of the channels or MAIN are at the lowest setting. Increase the
setting.
• MUTE button of the channel is pressed. Unmute it by pressing the button
again.
• The signal cables to the channels or Main are disconnected. Check the
connections.
DISTORTED AUDIO SIGNAL:
• Distorted/saturated audio signal. Adjust the volume level of the signal source.
Decrease the gain control of the STM 1003's input channels.
UNDESIRABLE NOISES:
• All RCA and power cables must be checked for irregularities beforehand and
corrected if necessary.
• Use suppression wires on the spark plugs.
• Route the incoming and outgoing RCA cables away from any other cables since
they are more sensitive to interference.
• Install a separate power source (+12V) for the sound system.
• Ground the STM 1003 properly. To do this, remove the paint from the vehicle's
chassis at the selected point and connect the wire to a grounding terminal. In
order to prevent rust, insulate it with paint.
• Place the STM 1003's ground wire as close as possible to the ground wires of the
other audio equipment that it is used with.
• Do not loop the ground wire. Avoid using multiple grounds. If possible, use a
star connection where all the grounds run from a single point.
• If you use a 12V power source for the STM 1003 that is separate from the rest of
the system, connect the ground (-) wires of all the sources together.
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