User's Manual

15
Trouble-Shooting
1. Status: The system is not providing any coverage and the LED on the bottom of the Network
Access Unit is flashing red.
A flashing red LED indicates that the system is in mute mode, which can be caused by either a cell
phone or the Network Access Unit being too close to the Coverage Unit.
Action: If possible, move the Coverage Unit farther away from the Network Access Unit and ensure
that your cell phone is not closer than 2 feet from the Coverage Unit.
2. Status: The system is not providing any coverage and the LED on the bottom of the Network
Access Unit is solid red.
A solid red LED indicates a hardware fault condition.
Action: The ZEN system should be returned to the point of sale for exchange.
3. Status: The LED on the Network Access Unit is not illuminating.
Action: Ensure the following:
 The cable from the Network Access Unit is properly connected to the Coverage Unit.
 The power supply is connected to the Coverage Unit.
 The power supply is plugged into an electrical outlet.
If the LED is still not illuminating, then return the ZEN system to the point of sale for exchange.
4. Status: My phone does not work around the location I would like to install the Network Access Unit.
Action: Try positioning the Network Access Unit outside as high as possible.
5. Status: The Network Access Unit and Coverage Unit are installed properly, but your cell phone
works poorly in the area that should be covered.
Action: There are three factors that may be affecting coverage as described below:
 Visually inspect the area around the Coverage Unit. Ensure that there are not any large metallic
objects directly between the Coverage Unit and the area where cell phone coverage is not
adequate. Remount the Coverage Unit so that it is out in the open.
 If the signal the Network Access Unit is receiving is very weak (although still strong enough to
allow operation), the area around the Coverage Unit within which a cell phone can function will
be relatively small. An effort can be made to improve system performance by raising or
otherwise repositioning the Network Access Unit in an effort to obtain a stronger signal.
 check with your vendor that your ZEN product is compatible with your cell phone service.
6. Status: The coverage area around the Coverage Unit shrinks after a long period of reliable operation.
Action: This is most likely due to man made environmental influences such as a large building being
erected somewhere in between the Network Access Unit and the location the Network Access Unit
is receiving a signal from. Repeating the install procedure with the Network Access Unit in its current
position may improve system performance (i.e. re-aligning and mounting it in the direction that
provides greater signal strength). If this does not help, the Network Access Unit may have to be
physically repositioned at a different location; going through the install procedure starting at
Choosing a location for the Network Access Unit on page 7, is necessary at this point.