DMP 250 (26-2886)         Self Test                    Faxback Doc. # 4222

To check the printers operation and print quality, we recommend you run 
the printer's self test before you send any print jobs from your computer.

1.  Load standard 8 1/2" wide paper (fanfold or single-sheet). 

    CAUTION: The self test prints lines that are 8 inches long, so you 
    must use 8«-inch wide paper to protect the platen.

2.  Turn the power off.

3.  Print the self test using one of the following test patterns.

    ø ASCII SLIDE PATTERN -- Press and hold ON LINE while you turn the 
      power on. When printing begins, release ON LINE. The display flashes 
      SLIDING and PRINTING alternately while the printer prints all the 
      ASCII characters.

    ø MAINTENANCE "H" CHARACTER PATTERN -- Press and hold ON LINE and 
      LF/FF while you set POWER to ON.  When printing begins, release ON 
      LINE and LF/FF.  The display flashes MAINTE and PRINTING alternately 
      while the printer prints the capital letter "H".

4.  To stop printing, press ON LINE. To resume, press ON LINE again. To 
    exit the test mode, turn off the printer.

    If some of the characters are blurred or if the print is light, adjust 
    the print head. If this does not correct the problem, try removing and
    re-installing the ribbon.