9
9.
Test 7 should produce a fine screen pattern. Look at the pattern for these
parameters:
•
There should be a consistent print appearance. If it appears faded, it would
need adjustment.
•
Use a jewelers loupe to compare the thickness of the horizontal lines to the
vertical lines. The horizontal lines should be thick like the vertical lines. If
they are not the same, adjustment is necessary. The example below shows the
horizontal lines thinner than the vertical lines.
10.
If no adjustment is needed, power the printer off and resume your work. To make
the adjustment, unlatch the print ribbon and move the take-up spool out to the
front to gain access to the printhead cover.
11.
Power the printer off.
12.
Remove the four T10 screws, and then pull the printhead cover upward to remove
it. Be careful not to damage the screwheads. Picture shown on page 4.
13.
Install the take-up spool in the printer.
14.
Power on the printer in Diagnostics Mode (hold the Unit Attention button for at
least 8 seconds while powering on the printer).
15.
Pull back on the take-up shaft retainer and remove the take-up roller. The take-
up roller should be placed on the table in front of the printer.
16.
With a 3/32” hex Allen wrench, loosen the two acorn screws on the front of the
printhead as shown below.
17.
With a 3/32” ball-end hex Allen wrench, loosen the brass setscrew on the front of
the printhead 1/6 of a revolution counterclockwise (which will control the
printhead pitch). See the figure above.
