Specifications

4–29Troubleshooting
Running the Diagnostic Self–Tests
To run a diagnostic self–test:
1. On the control panel, press the ON LINE switch to place the printer
off–line. “Off–line Emulation” displays.
2. Raise the printer cover.
3. On the control panel, press the  and  switches at the same time.
“ENTER Switch Not Locked” briefly displays. (If “Locked” displays,
press  and  again.)
4. Press the  switch. The current emulation displays.
5. Press the  or  switch until “Emulation Self Test” displays.
6. Press ENTER. “Emulation Self Test * ” displays.
7. Press . “Self Test ASCII Swirl” displays.
8. Press  or  until the test you want to run displays. (The tests are
summarized on page 4–27.)
9. Press R/S (or ENTER) to start the self–test.
Press R/S (or ENTER) to stop the test.
10. Examine the print quality. Characters should be horizontally and
vertically aligned and solidly formed.
11. Press CLEAR. “Off–Line Emulation” displays.
12. Press  once, then press  until the emulation you want displays.
13. Press ENTER, then press the  and  switches simultaneously.
14. Close the printer cover.
15. Press the ON LINE switch to place the printer on–line.