Printing Hex Dump - Epson PLQ-20 Reference Manual

2. Turn on the printer while holding the F2 button. Then press
the F1/Eject and F2 button while the F1/Eject, Offline, and
F2 lights are flashing.
3. When the Ready light turns on, insert a sheet of A4 paper into
the front slot.
4. The printer prints the self-test pattern in the font selected in
the default settings mode.
Note:
To stop the self-test temporarily, press the offline button. To resume
the test, press the offline button again.
c

Printing Hex Dump

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 it receives from the computer as
hexadecimal values.
Note:
❏ The hex dump feature is designed for use with DOS-based PC.
❏ Prepare an A4 size sheet of paper before entering the hex dump
printing mode.
Caution:
Do not turn off the printer while it is printing the self-test.
Always press the Offline button to pause printing. Then
turn off the printer.
Chapter 6 Problem Solver 103