Epson 1010 User Manual page 184

The printer sounds like it is printing, but nothing is printed.
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The ribbon cartridge may not be installed properly. Turn off the
printer and reinstall the ribbon cartridge.
The ribbon may be worn. Replace the ribbon cartridge.
The printer makes a strange noise, the buzzer sounds several times, and
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the printer stops abruptly.
Turn off the printer and check for paper jams or other problems;
then turn the printer back on. If the printer still does not print
correctly, contact your dealer or call the Consumer Information
number listed in Where to Get Help.
The ON LINE light is flickering but the printer does not print, or it stops
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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.
Printed characters have parts missing at the bottom.
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The ribbon cartridge may not be installed properly. Remove the
ribbon cartridge and reinstall it.
The printout is faint.
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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.
Troubleshooting 7-3