Intermec EasyCoder 601 XP Service Manual page 61

Chapter 8 Print Unit
8.7 Printhead, cont'd.
60
Replacing the Printhead, cont'd.
• Insert the printhead assy into the print unit, fitting the bracket's
fingers over the headlift shaft. Check that the printhead can
move freely up and down.
• Check so the cables will not interfere with the transfer ribbon or
have become jammed between parts in the print unit.
• Turn the printhead lift knob to "Closed" position, so the magnet
engages the printhead bracket.
• Turn on the power. The printer's firmware automatically meas-
ures the printhead resistance at power-up.
• Load paper and, if so desired, transfer ribbon again.
Precautions
Some simple measures can be taken by the user to prevent prema-
ture wear-out:
• Clean the printhead regularly, as described in the Installation &
Operation manual. Not only will a dirty printhead produce an
inferior printout, but any residue on the dots will prevent heat to
dissipate through the transfer ribbon and paper.
• Use original Intermec transfer ribbons only. These are optimized
specifically for your printer. Inferior back coating on a non-
approved transfer ribbon may cause residue which can com-
pletely destroy the printhead.
• Follow the recommendations regarding Paper Type setup in the
Installation & Operation manual. Too much energy to the
printhead will wear it out rapidly.
• Do not use higher Print Speed setting than necessary.
• Do not use a higher Contrast setting than necessary, especially
not in combination with the highest Paper Type Constant
settings.
• Do not use a higher printhead pressure than necessary.
• Never print outside the paper width. Dots not in contact with the
paper will not be cooled properly.
• Use transfer ribbons wider than the paper (if available).
• When using a paper with less than full width, be careful to adjust
the printhead lift arm so there is an even pressure across the paper
web. Not only will an uneven pressure impair the printout
quality, but it may also prevent the dots from being properly
cooled. Moreover, a sharp outer paper edge in direct contact with
the printhead may cause excessive mechanical wear on some
dots, which may be visible when printing on wider paper later.
• When using preprinted labels or labels with some type of varnish
or non-standard top coating for direct thermal printing, use
original Intermec labels or inks recommended by leading manu-
facturer's of direct thermal paper. The labels should not contain
any aggressive substances such as chloride or grinding sub-
stances such as titanium dioxide.
Intermec EasyCoder 601 XP – Service Manual Ed. 3