Epson LQ-2550 - Impact Printer Product Support Bulletin page 13

EPSON
EPSON AMERICA, INC.
CENTRONICS PARALLEL REQUIREMENTS TO ELIMINATE RANDOM
Subject:
Date: 7/24/89
Page: 1 of 1
The self test can be run in draft mode or Letter Quality mode, depending on
which button is held down as the printer is turned on. With the color ribbon
cartridge installed, the self test prints in seven colors (black, magenta, cyan,
violet, yellow, red, and green).
yellow and blue combined to make green.
When a black ribbon is installed in the LQ-2550 and the self test is run,
some lines of the self test are printed in double-strike mode. The printer is
making the double passes for the color test, leaving a light and dark
appearance to the printout.
color ribbon is installed before printing is executed.
The self test can be performed using paper that is at least 8 - 1/2 inches
wide, but wide carriage paper is recommended.
To perform the self test, follow the instructions below:
1. The power cable is connected to a properly grounded electrical outlet.
2. The printer is turned off and the ribbon is installed.
3. While holding down the LINE FEED button (draft mode) or the FORM
FEED button (Letter Quality mode), turn on the printer. The printer will
beep three times and the POWER and PAPER OUT lights will turn on, if
paper is not installed in the printer,
4. Press the PAPER SELECT button until the type of paper desired is
selected.
5. Adjust the tractors or the paper guides to accommodate the size of the
paper being using.
6. Press the LOAD/EJECT button once, to automatically load the paper.
7. Press the ON LINE button, to start the self test.
8. A list of the printer's current settings is printed first, followed by a series
of characters. The self test continues until the paper runs out or until the
printer is reset.
9. Press the LOAD/EJECT button, to eject the paper, and turn the printer
Off.
10. After the printer is turned off, always wait at least 5 seconds before turning
it back on.
INFORMATION
Product Support Bulletin
Some colors require two passes, such as
The self test cannot detect whether a black or
PSB No: P-0048
Originator: ML
.