1. Judge continuity of the cables or wires.
2. Track the cables or wires, and diagnose the break point.
3. Receive the tone signal on the cables or wires (telephone line)
4. Identify the state in the working telephone line (clear, ring, busy)
5. Send a signal solid tone or dual alternating tone to the object cables or wires.
1. Track cable or wires
Use sender (switch to tone) and receiver
Connect the test leads to the pair, or attach one test lead to ground and another test lead to either side of the line. Move the Receiver close to and along the pair (or the line). Reception of the tone indicates the track.
Note: Do not connect to any active circuit in this mode.
2. Battery Replacement
a. Sender battery replacement
Remove the screw on the back case, remove the back case, and replace the exhausted battery with a new one of 9V (6F22). Rejoin the back case and install the screw.
b. Receiver battery replacement
Remove the screw on the battery compartment, remove the battery cover, and replace the exhausted battery with a new one of 9V (6F22). Rejoin the cover and install the screw.
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