Epson LQ-860 - Impact Printer, User Manual

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With the color ribbon cartridge installed, the self test prints in seven
colors: black, magenta, cyan, violet, yellow, red, and green.
With the black ribbon cartridge installed, some lines of the test print
twice, making some lines darker than others.
CAUTION:
Never run the self test using paper that is
narrower than 8.27 inches (210 mm). This prevents the
print head from printing directly onto the platen, which
can damage the print head.
Although the self test can be run with continuous paper, use single-
sheet paper now because single-sheet loading is easier. Be sure to
use paper that is wide enough for the self test to print. If you need to
load continuous paper to print the self test, see Loading Continuous
Paper in Chapter 3.
1. Make sure the printer is turned off.
2. Push the paper release lever back to the single-sheet position.
Setting Up the Printer 1-17