8.6 Diagnostic Functions
The printer diagnostic functions are Self-Test page, hex-dump mode and print alignment
adjustment.
Self-Test page: Tells you whether the printer hardware is functioning correctly. If the printer
hardware is functional, any problems you are having are probably caused by incorrect
printer settings, incorrect software settings, the interface, or the computer.
HEX-DUMP MODE: Allows you to determine whether the computer is sending the correct
commands to the printer, and whether the printer is executing the commands correctly.
This function is useful to programmers or others who understand how to interpret hex
dumps.
PRINTING ALIGNMENT ADJUSTMENT: Allows you to check and, if necessary, correct the
printer’s vertical line print alignment in bi-directional mode.
For details on using these functions, please refer to chapters 4 and 5.