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Resetting the Factory Default Values
Sometimes, resetting the printer to the factory defaults solves some of the
problems. Follow the four-flash sequence instructions in “Feed Button
Modes” on page 52.
Communications Diagnostics
If there is a problem transferring data between the computer and printer, try
putting the printer in the communications diagnostics mode. The printer
will print the ASCII characters and their respective hexadecimal values (a
sample is shown below) for any data received from the host computer. To
find out how, refer to the power off mode procedure in “Feed Button
Modes” on page 52.