Plotter displays: PLEASE CHECK CARRIAGE or SERVO INIT ERROR;
Repeated dot misalignment at specific y-axis (left-right) locations.

A.    Check for obstructions which might not allow the carriage to move left-
      to-right and grit drum roller to rotate.
       
B.    Examine the pinch rollers.

      1.    Turn off power to plotter.

      2.    Unclamp the pinch rollers. 

      3.    Remove media from plotter. 

      4.    Verify that pinch rollers move freely. Clean, if necessary.

      5.    Turn on plotter power.

      6.    Reload media into plotter.

C.    If the customer hears a grinding noise, a servo motor may be binding or
      there is an incorrect power being supplied to the circuitry.  It may
      also be that the service (cleaning) station is mounted too high.  
      None of these are user serviceable.

D.   The plotter determines accuracy in the y-axis direction by the use of
     an encoder strip. As the carriage travels from left to right, the
     plotter reads each marking to determine the correct positioning.

     1.    If the encoder strip becomes dirty or scratched, the plotter
           will not be able to accurately plot.  Verify that the encoder
           strip is clean by performing the following steps:

           a.   Unplug the power cord from the plotter.

           b.   Remove the left end cover by removing one screw in the
                front and two screws on the back of the left end cover.

           c.   Remove the right end cover as follows: 

                i.    Remove one screw in the front and one on the back of
                      the right end cover.

                ii.   Slide the right end cover to the right far enough to
                      expose the screw holding the upper carriage cover on
                      the right side.

                      Note: The right end cover cannot be completely removed
                      because the control panel is electronically attached to
                      the plotter.

           d.   Remove the two screws on the upper carriage cover that are
                now exposed by removing/moving the end covers.

           e.   Remove the upper cover.

           f.   With the upper carriage cover removed, the encoder strip is
                visible. It is a clear plastic strip which appears to have a
                slight gray tint and spans the entire length of the plotter.
                It is attached to the topmost metal bracket, which also spans
                the plotter. 

           g.   The encoder strip must be completely clean and free of any
                smudges.  Because it is made of plastic, use soft materials
                for cleaning, such as a cotton swab with alcohol or a
                KEYKLEEN pad (shipped with plotter) to clean the encoder
                strip.

                Note: DO NOT use too much pressure, this may scratch the
                surface and cause permanent damage.  Gently rub both sides of
                the encoder strip until it is clean.
  
           h.   If the servo motor wiring connector cables are not making a 
                good connection, then they can be simply reconnected. The 
                connections are all under the right end cover. Slide the 
                right end cover far enough to expose the circuit board. 
                Press on each connector to ensure that each connector is 
                tight.

           i.   Reattach the upper carriage cover and the two end covers.
                Plug in the power cord to the plotter.

           j.   Verify that the problem has been remedied by running either
                a PALETTE or BORDER PLOT test. Perform the following steps:

                i.    Load media.

                ii.   Press the MENU key until the plotter displays:
                      Menu-Use arrow keys to change

                iii.  Press the up arrow key until the plotter displays:
                      Internal Test

                iv.   Press the right arrow key until the plotter displays
                      either PALETTE or BORDER PLOT

                v.    Press the ON LINE button.

                vi.   Examine the output.

           k.   If the problem was not remedied, then the plotter requires
                service.