Epson LQ-2500 User Manual - Page 151

you can see what codes are being sent to the printer. If characters are printable, they appear as their true ASCII characters. Non-printable codes, such as control codes are shown by a dot. 1 6 3 8 1 2 1B 5 0 I B 3 2 O A OD OA 0 0 OA OD OA OD OD 41 70 70 6 5 6E 64 69 78 20 44 2 0 70 72 6 5 73 6 5 6E 7 4 7 3 2 0 7 3 6F 6C 7 5 7 4 6 9 6 F 6E 7 3 2 0 6 6 6F 7 2 2 0 7 0 6 F 7 3 7 3 6 9 6 2 6C 6 5 2 0 7 0 7 2 6 F 6 2 6C .8..P.2......... Appendix D prese nts solutions f o r possible probl Find the hex code, 41, at the beginning of the second line. Then find the character, A, at the beginning of the second line in the guide section. The hex code for A is 4 1. To interpret the non-printable codes, use the ASCII Conversion Chart on the Quick Reference card to find the meaning of the hex code and then look at the Command Summary to find what the control code tells the printer to do. In the hex dump above, the first hex code, IB, represented by a dot, is the ESC code. It is followed bv hex 38, which is printed as 8. Together, these two codes combine to become ESC 8 which is the control code that tells the printer to ignore the paper-out sensor The chart below interprets the first six codes for you. Hex codes lB 38 12 1B50 1B 32 OA OD Command Function ESC8 DC2 ESC P ESC2 & Disable paperout sensor Cancel condensed mode Select pica pitch Select 1 G-inch line spacing Line Feed Carriage Return If you find codes in your hex dump that you did not enter in your program or codes you did not expect your application program to send, your computer may be changing the codes before sending them to the printer. You will need to adjust the program. Hex dump mode can be turned off by turning off the printer: it is also cancelled by an INIT signal from the computer. D-6 Problem Solving and Maintenance