Epson 680Pro User Manual - Page 115
Printing a Hex Dump, LF/FF, Load/Eject, Pause
UPC - 010343832138
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2. To run the test using the Draft font, hold down the LF/FF button while you turn on the printer. To run the test using the printer's letter-quality fonts, hold down the Load/Eject button while you turn on the printer. After a few seconds, the printer loads the paper automatically and begins printing a self test. A series of characters is printed. 3. To end the self test, press the Pause button to stop printing. Then eject or tear off the printed page(s) and turn off the printer. Printing a Hex Dump 5 If you are an experienced user or a programmer, you can print a hexadecimal dump to isolate communication problems between the printer and your software program. In hex dump mode, the printer prints all data received from the computer as hexadecimal values. You can print a hex dump using either single sheets or continuous paper. Note: Use continuous paper that is at least 241 mm (9.5 inches) wide or A4 or letter size single-sheet paper. Troubleshooting 5-19