2) When doing the NCV testing, place the probe of MT-7028 receiver to
the tested cable, the NCV indicator twinkles fast and the buzzer
sounds, which means the tested object has AC 90~1000V. If there is
no response of indicator and no buzzer sounds, it means the tested
object has AC power less than 90V or there is no AC power on it.
9.Maintenance & Trouble Shooting：
Warning
Turn off the Transmitter or Receiver and disconnect all test leads before
replacing the battery.
Caution
To avoid damaging the case, do not use solvents or abrasive cleansers. Clean
the case with a soft cloth dampened with water or a mild soap solution.
10. Trouble Shooting
The signal from
Transmitter can not be
detected by Receiver
Shortage of battery power: Check the battery on
both Transmitter and Receiver. If the battery
voltage is less than 6.5V, please replace with a
new battery.
Make sure the switch position on receiver is
“SCAN” or ”LED”. The SCAN function will not
work if the switch is at another position.
Device damaged: please return the product to the
place you purchased for maintenance.
No signal received from
Transmitter on Live
telecommunication device
testing
There might be conflict between the signal from
telephone office and the signal from Transmitter.
Please turn off the telephone exchange device.
Incorrect cable mapping
result
LED indicator broken: please return the product to
the place you purchased for maintenance.
Improper connection of networking or telephone
cables: please reconnect the cables toRJ45/ RJ11
compatible connectors.
Switch at SCAN position, and push "SCAN ”
button. If the indicator does not light up, please
replace with a new battery
Device damaged: please return the product to the
place you purchased for maintenance.
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