LP 990  (260-2879)              Selftest               Faxback Doc. # 4675

You can print the following self tests to ensure that your printer is
operating properly. The test printouts also provide helpful information.

If you have printing problems, you might want to disconnect the printer from
the computer before you print the self tests. This lets you verify that the
problem is with the printer rather than with the computer, software, or the 
connection between the computer and printer. If you choose to disconnect 
the printer from the computer, first turn off the printer and unplug its 
power cord before you disconnect it from the computer.

This section gives instructions for printing the self tests and describes 
each self test.

PRINTING A SELF TEST

Follow these steps to print a self test.

1. Turn the printer on. WARMING UP appears on the printer's display. Then, 
   the ONLINE and READY indicators light and READY [LJ2] T appears on the 
   display.  After about 60 seconds, READY stops flashing on the display, 
   and the printer is ready for use

2. When READY stops flashing on the display, press ONLINE so that the ON-
   LINE indicator turns off and READY appears on the display.

3. Select the desired self test as follows.

   * To print the Font List, press and release PRINT FONTS/TEST so that FONT
     PRINTOUT appears on the display.

   * To print Self Test 1, press and hold down PRINT FONTS/TEST until SELF
     TEST #1 appears on the display.

   * To print Self Test 2, press and hold down PRINT FONTS/TEST until SELF
     TEST #2 appears on the display.

The DATA indicator lights and printing begins. When printing is complete, 
the DATA indicator turns off and READY appears on the display. Press 
CONTINUE/RESET so that READY [LJ2] T appears.

FONT LIST

The printout for this self test gives information about available fonts--
including fonts downloaded from software, fonts on installed font cards, and
the printer's internal fonts.

SELF TEST 1

The printout for Self Test 1 lists the current menu settings.

It also shows additional information, including the life count for the printer
(Machine), the OPC cartridge (Photo-conductor), and the developer cartridge
(Developer). To help determine whether the printer requires maintenance, you
can compare the current life counts to the life expectancy values given in
"Specifications." For more information, see "Maintenance."

SELF TEST 2

The printout for Self Test 2 is a full sheet of characters from the selected
symbol set and font. (See "Menu Settings" for information about specifying 
the symbol set, font source, and font number.)


(smm 07/27/93)