Communication Error - Texas Instruments TI-73 Manual Book

Communication Error

This error indicates that the TI Connect™ software ("Unable to
communicate with device") or TI-GRAPH LINK™ software ("Link
Transmission Error") is unable to communicate with the device.
The problem is usually associated with the TI-GRAPH LINK
cable and its connection to the device or to the computer.
• Make sure the cable is firmly inserted into both the device link
port and the computer.
• Verify that the correct cable type is selected in the software
link settings.
• Verify that the correct communications port (Com Port) is
selected in the software link settings. (This does not apply if
using the USB port and TI Connect software.)
TI-73 / TI-83 Plus Rational Number Rampage App Page 22