Epson LX-810 User Manual page 101

Data Dump Mode
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.
The corresponding text field line on the right side of the printout
contains the letter T preceded by two spaces.
The chart below interprets the first six codes.
Hex codes
Command
Function
1B 40
BSC @ Initialize printer
1B 52 00
BSC R 0 Select USA character set
1B 74 01
BSC t 1
Select Bpson Bxtended Graphics character
IB 36
BSC 6
Bnable printable characters
12
DC2 Cancel condensed mode
IB 50
BSC P
Select 10 cpi
Using the Printer 3-29