Star Micronics NL-10 - Manual (Page 30)

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Figure 3-3. Make sure that the ribbon is not twisted when you thread it through
its path.
9. Firmly pull the idler gear towrds you and guide the ribbon between the
idler gear and the ribbon drive gear.
10.Remove the top and the bottom of the ribbon holder.
11.Replace the ribbon cartridge top cover.
12.Now you’re almost finished! Remount the cartridge to the printer. Notice
that five replacements is the maximum, after which you should buy a
completelt new cartridge.
REPLACING THE PRINT HEAD
The dot matrix print head has a remarkably long life. It will print perhaps
100,000,000 characers before you have to replace it. You’ll know when that time
comes when printing is too faint even after you replace the ribbon cartridge.
Warning: The print head gets hot during operation, so let it cool off before you
touch it.
To replace the print head, start by turning off the Power switch and unplugging
the power cord. Then follow this procedure: