Epson ActionPrinter 4000 User Manual - Page 187

Printing Problem The print position is not what you expected (continued). Vertical printed lines do not align or gaps appear in lines or graphics. Solution The printer is usually set for bidirectional printing. This can cause a slight misalignment of graphics characters. When precise printing of vertical lines is necessary, contact your service center to have them perform the bidirectional print alignment adjustment or select the unidirectional print mode by sending ESC U or ESC < to the printer. You can also select unidirectional printing by setting DIP switch 2-6 to off. Unidirectional printing is slightly slower. See Chapter 9. Note: Use the data dump mode to check data being sent from the computer. In the data dump mode, data is printed in hexadecimal format and in ASCII characters. See Data Dump Mode in Chapter 3. If the printer still does not print, try the self test described in Chapter 1. If the self test works properly, the printer is all right, and the problem probably lies in the computer, the software, or the cable. If the self test does not work, contact the store where you purchased your printer or call the Epson toll-free number (1-800922-8911). Troubleshooting 7-13