A.    The memory in the printer may have been corrupted. The printer will not
      perform a full reset by simply cycling the power on the printer. To
      perform a full (cold) reset, perform the following:
      
      1.    Turn off the printer power and press and hold the ON LINE button
            while turning on the printer. When the display shows: COLD RESET,
            then release the ON LINE button. When the printer displays: PS
            READY,  perform the following:
            
            a.    If a specific language is desired (e.g., PostScript, PCL5,
                  HPGL/2), then perform the following:
                  a
                        and then press and hold down the MENU button until
                        the display on the printer displays: SYS=AUTO.
                  
                  ii.   Press  the + key until the desired selection is
                        displayed (e.g., SYS=AUTO, or SYS=HP-PCL, or 
                        SYS=HP-GL/2, or SYS=POSTSCRIPT) and then press the
                        ENTER/RESET button. When the printer has finished
                        processing the change, the printer will be on line
                        and the printer will display the current language
                        emulation selected followed by the word: READY.
            
            b.    If this printer is a CCL600B (80611B), then perform the
                  following:
                  
                  i.    Press the ON LINE button to take the printer off line
                        and then press and hold down the MENU button until
                        the display on the printer displays: SYS=HP-PCL.
                  
                  ii.   Press the menu button until the printer displays:
                        PAGE PROTECT. Press the + key until the printer
                        displays: PAGE PROTECT = OFF.  Press the ENTER/RESET
                        button.
                  
                  iii.  Press the menu button until the printer displays:
                        BANDING COMP. Press the + key until the printer
                        displays: BANDING COMP. =  ON.  Press the ENTER/RESET
                        button.  Press the ON LINE button.
            
            c.    If there were other settings that needed to be set such as
                  serial communication settings (e.g., baud rate, number of
                  bits/parity, handshake), or paper sizes, then set those
                  accordingly.

B.    There may be a problem with the communications.
      
      1.    Try printing from another application. If printing from Windows,
            then try printing from DOS.
      
      2.    Try printing with another cable.
            
            a.    If using a serial cable, this printer requires using a null-
                  modem cable, 50 ft. or less (CalComp part number 17557-
                  0084). A straight-through cable with a null-modem adapter
                  (available at a local computer supply store) is acceptable.
            
            b.     If using a parallel cable, use a cable 10 ft. or shorter.
                  (CalComp part number 18735-0129).
      
      3.    Try printing from another computer.