Epson 1170 - Manual (Page 106)

Printing
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The PAUSE light is flickering and printer does not print or
it stops printing abruptly.
The print head is overheated. Wait a few minutes; the
printer resumes printing automatically when the print head
cools.
The print is faint or uneven.
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Printed characters have parts missing at the bottom.
The ribbon cartridge may not be installed properly. See the
section on ribbon installation in Chapter
1.
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The printout is faint.
The ribbon may be worn out. Replace the ribbon cartridge.
Check that the paper-thickness lever is set correctly for the
paper you are using.
Dots are missing in the printed characters or graphics.
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A line of dots is missing in the printout.
The print head is damaged. Stop printing and have your
dealer or a qualified service person to replace the print head.
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Dots are missing in random positions.
There is either slack in the ribbon or the ribbon has come
loose. Reinstall the ribbon cartridge.
Printed characters are not what you expected.
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The typestyle or characters that are set by your software
cannot be printed.
Check that the software is correctly installed for your
printer.
Troubleshooting 6-5