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Using the Data Dump Mode
4. To turn off the data dump mode after you have taken the printer off
line, turn off the printer.
By comparing the characters printed in the text field on the right side of
the data dump printout (see step 3) with the printout of hex codes, you
can check which codes are being sent to the printer.
To interpret the data dump printout, examine the first three hex codes
on the second line of the printout sample (20 20 54). Each hex code 20
represents a space; hex code 54 represents the letter T. Check the second
line of the text field on the right side of the printout and you will find
the letter T preceded by two spaces.
The chart below interprets the first eight codes.
Hex codes
Command
Function
1B 40
ESC
Initialize printer
1B 52 00
ESC R 0
Select USA character set
1B 74 01
ESC t 1
Select Epson Extended Graphics set
3-28
Using the Printer