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UTP AND THIN ETHERNET REPEATERS
Action
: 1. Check that the cable is completely plugged in and the modular
plug is properly attached.
Cause
: 2. A length of phone wire is connected but there is nothing at the
far end of the line.
Action
: 2. Verify that there is not a break in the cable by measuring the
cable length from each end. (Short one end and measure the resistance
from the other end. Repeat from the other end as explained in Chapter
3
.) The resistance should be the same on both readings.
Cause
: 3. The repeater at the far end is not powered.
Action
: 3. Check the power supply of the other repeater.
Cause
: 4. A length of phone wire is connected but there is a short circuit
in the cable at or near the repeater.
Action
: 4. Breaks and shorts tend to occur at or near connections. A short
in the phone wire can be located using an ohmmeter. The distance to the
short in feet is approximately the resistance times 20. Note that more
often than not the problem will be at a connection; check connections
first.
Symptom
: A single device in a coaxial run with all the other devices on the
run working does not communicate.
Cause
: 1. The device is not connected to the coaxial leg.
Action
: 1. Verify that the coax loops into the device. It may not have been
attached, the connection may have come loose, or the T-connector may be
defective.
Cause
: 2. There is a problem with the hardware or software in that
particular unit.
Action
: 2. Swap the device with another known working unit from
elsewhere on the leg. If the problem follows the device, have it repaired or
replaced.
Symptom
: A repeater port connected to another repeater has its red LED
on, but there is no communication between the repeaters.
Cause
: 1. The wires are crossed.
Action
: 1. Check the LED on the other repeater. If it is red, unplug the
phone wire at one repeater and reverse the crossed wires.
Summary of Contents for LZ1500A-R3
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