Lexmark 4I3 - Manual (Page 88)

The printer displays
5. Press Scroll or Scroll until the printer displays
6. Press Enter or Start to print this test. The Ready indicator
comes on and printing begins.
7. Wait for the printer to stop printing and the Ready indicator to go
off.
8. Press Form Feed until you can remove the printout.
The lines numbered 1 through 9 should print as shown on the
sample printout on page 1-67, and the remainder of the printout
should be clear and readable.
OPERATOR PRINT TESTS
Printer Demonstration
OPERATOR PRINT TESTS
Printer Verification
1-66 User’s Guide