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4. Missing dots
If dots or lines are not printed completely, remove the ink jet
print head and reinsert it, or:
Clean the print head, holding ON LINE and pressing
PAPER for at least 2 seconds.
Clean the electrical contacts on the print head and those
in the print head carriage.
For all these operations, see the appropriate paragraphs in
Ink Jet Print Heads .
After clearing and/or cleaning the print head contacts, print
a "demo" page to check the print quality. If the print quality
is still not acceptable, run a print test, as follows:
Make sure that the print heads are inserted and that
there is paper in the ASF.
Press and hold in this order: ON LINE, then PAPER,
then POWER. Hold them until the light indicators go off,
then release them together. Press ON LINE, POWER,
ON LINE, in this order; or click the appropriate button in
the Printer Care folder in the Printer Monitor.
A sheet of paper will be fed into the printer and the print
test will be executed automatically.
To suspend the print test temporarily, press ON LINE
(pressing this key a second time will cause printing to
resume). Once the test is completed and the last sheet of
paper expelled, the printer will go automatically into
ON-LINE condition. Check the print quality of the test,
making sure that all the characters are clearly defined and
complete.
38
If you have any problems with the print test, check that
you have followed the operating procedures correctly.
Print test contents
The print test ( see figure on page XI ) contains information
on the printer firmware (release, emulation and character
generators) and the correct operation of the print head
nozzles:
The first line of the print test contains technical
information on the printer contents.
This is followed by information on the condition of the
two print heads (first the monochrome head, then the
color print head). This information consists of:
– the Print Head Type (Black/Color),
– the Print Head Test (consisting of a diagonal line,
indicating the performance of the head nozzles),
– the result line (Nozzle test Pass, or Fail with the
number(s) of the faulty nozzle(s)).
If dots are missing, see the appropriate paragraphs in
this section for the possible solutions to this problem.
Then repeat the print test.
The rest of the print test contains the currently selected
values for the programmable parameters (SETUP), a
print-out of the currently selected character set and the
internal fonts available.
If you wish to modify your printer set-up under DOS, see
Running the Printer Set-Up Utility in Using Software .
Troubleshooting - Print heads
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