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Two line feed commands are being sent at the
end of each line of text, because the printer's
auto line feed setting is on.
The line space setting in your application
software is incorrect.
The printer prints strange symbols, incorrect fonts, or other inappropriate characters.
Cause
Your printer and computer are not
communicating correctly.
The wrong character table is selected in your
software.
The printer you want to use is not selected in
your software
Your application software is not configured
correctly for your printer.
Software settings override settings you make
using the Default Setting mode or the control
panel buttons.
Vertical printed lines are not aligned.
Cause
Bidirectional printing, which is the printer's
standard printing mode, is out of alignment.
Printing position problems
Your printing appears too high or low on the page.
Cause
The paper size setting in your application
software or printer driver does not match the
size of the paper you are using.
Turn off the auto line feed setting in the printer's Default Setting
mode. See "Changing default settings" on page 25.
Adjust the line space setting in your application software.
What to do
Make sure that you use the correct interface cable and that the
communications protocol is correct. See "Electronic" on
page 109 and your computer documentation.
Select the correct character table using your software or the
Default Setting mode. The character table setting made in your
software takes priority over the settings made in the Default
Setting mode.
Choose the correct printer in your application before printing.
Make sure that your application software is configured correctly
for your printer. See your application documentation. If
necessary, install or reinstall the printer driver software as
described in the supplied setup sheet.
Use your application software to select the font.
What to do
Use the printer's bidirectional adjustment mode to correct this
problem. See "Aligning Vertical Lines in Your Printout" on
page 88.
What to do
Check the paper size setting in your application or printer driver.
LQ-780/LQ-780N
User's Guide
Troubleshooting
78
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