Receiver Specifications; Repair And Maintenance; Troubleshooting; Checking The Transmitter's Fuse - Dawson DCT220 User Manual

5.2 Receiver Specifications

The depth of tracking depends on the material
Depth of tracking
and specific applications
About 0~2m
Single pole application
Cable
Dual-pole application About 0~0.5m
locating
mode
Single loop line
Up to 2.5m
Grid voltage identification
About 0~0.4m
Display
LCD,with function display and column chart
Power supply
MIN current About 32mA
consumption
MAX current About 89mA
0°C to 4
Working
80%(non-condensation)
Environmental
-20°C to +6
Temperature
In storage
of 80%(non-condensation)
Aititude Max.2000m
Dimensions(HxWxD) 241.5mmx78mmx38.5mm
Without battery About 280g
Weight
About 350g
With battery

6. Repair and Maintenance

1. If it appears that the meter is malfunctioning, check the
battery and make sure the test leads are not broken.
2. Before sending the meter back for repair
description of the problems encountered. Remove
batteries and pack meter well to avoid damage in
delivery; Dawson does not cover damage due to delivery.
3. There is a fuse within the transmitter. If it blows,
replace it only with another fast acting fuse of the same
electrical ratings to ensure proper safety and
transmitting power.
6x1.5V AAA,IEC Lr03
0°C,with maximun relative humidity of
0°C,with maximun relative humidity
, include a
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6.1 Troubleshooting

If the detector does not work properly,please check
the items in the table below
Malfunction Items to be checked
Has the battery been installed?
Meter fails to
Is the battery's voltage too low?
power on
Is the battery correctly installed?
Is the connection to the circuit
sound?
Transmitter cannot
Are the leads/probes damaged?
identify connected
circuit's voltage
Are the leads properly connected
to the transmitter?
Transmitter stops Is the battery voltage too low?
transmitting during
Did the transmitter automatically
measurement
turn itself off?
Has the START/STOP button
Transmitter doesn't
been pressed?
transmit signal
Is the fuse blown?

6.2 Checking the transmitter's fuse

The fuse is designed to help prevent damage to the
transmitter caused by an overload or user error. If the
fuse blows, the transmitter can still transmit a signal, but
will be extremely weak. If no signal is transmitted, yet the
battery is good, the transmitter may be damaged and
should be checked out at the nearest service center.
How to check the fuse of the transmitter:
1. Disconnect the transmitter from any circuit.
2. Turn on the transmitter.
3. Set the transmitter level to the lowest level.
4. Connect one end of the transmitter to the other.
5. Press START/STOP to begin transmission.
6. Use the receiver to check for the signal from the
transmitter.
7. If the fuse is good, the signal received will be strong.
Measure to be taken
Install new batteries
Check the polarity
Check and re-connect leads to
the circuit if necessary
Replace test leads/probes
Check and re-connect leads to
the transmitter if necessary
Replace battery
Turn transmitter back on
Try to transmit again
Replace fuse
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