Issue
Symptom
What would cause the programmer to display ( Plug in 7112) when you press send or receiver
Diagnosis
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The programmer is not correctly connected to the D7112.
Solution
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Verify that the data/power cord is plugged securely in the programmer port J4, on the D7112.
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Verify that the data/power cord is plugged securely into the communicator port on the D5200 programmer
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Check each conductor in the data/power cord for continuity
Part numbers D7112, D5200