Epson TM-T85, Operator'S Manual

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Troubleshooting 3-7
The remaining amount of roll paper is not detected correctly.
A microswitch attached to the paper roll near end detector lever
detects when the roll paper is almost gone. You can adjust the
detector lever if necessary. See Chapter 1 for instructions.
Hexadecimal Dump
This feature allows experienced users to see exactly what data is
coming to the printer. This can be useful in finding software
problems. When you turn on the hex dump function, the printer
prints all commands and other data in hexadecimal format along
with a guide section to help you find specific commands.
To use the hex dump feature, follow these steps:
1. Make sure that the printer is off.
2. Open the cover.
3. Hold down the PAPER FEED button while you turn on the
printer by pressing the POWER button.
4. Close the cover. The printer prints “Hexadecimal Dump”.
5. Run any software program that sends data to the printer. All
the codes it receives in a two-column format. The first column
contains the hexadecimal codes and the second column gives
the ASCII characters that correspond to the codes.
sample
Hexadecimal Dump
1B 21 00 1B 26 02 40 40 1B 69 : . ! . . & . @ @.i
1B 25 01 1B 63 34 00 1B 30 31 : . % . c4 . .. 01
41 42 43 44 45 46 47 48 49 4A : ABCDEFGHIJ