Olivetti 490 - Manual (Page 40)

34
M
AINTENANCE OPERATIONS
T
O REPLACE THE PRINT HEAD
1. Open the operator console, as indicated by the arrow, until you
hear a click, which means that it is fully open.
2. Lift the print head compartment cover using the lever, as shown in
the figure.
3. Release the print head by pressing the levers and then remove it
from its seat.
4. Take the print head out of its package and, holding it on both sides,
peel off the film covering the nozzles.
5. Avoid touching both the nozzles and the electrical contacts.
6. Insert the print head in its compartment with the electrical contacts
facing downwards.
7. Push the print head until it clicks into place and close the print head
compartment cover and the operator console.
note
If you have replaced the print head because the ink ran
out, when the print head compartment cover and the opera-
tor console are closed, the fax machine will automatically
recognize that the print head has been replaced and the
display will show the message "NEW PRINT HEAD? 1 =
YES, 0 = NO". Set the value 1.
At this point, the fax machine automatically cleans the
print head and tests the nozzles, printing out the result of
the diagnostic test. Examine the diagnostic test result with
reference to "To install the print head", chapter "Opera-
tions essential for correct operation".
If you replaced the print head because of a deterioration in
printing quality, proceed as follows:
Until the display shows:
HEAD MAINTENANCE
The display shows:
NEW HEAD: ON
The display shows:
CLEANING: ON
The fax machine cleans the print head and tests the noz-
zles, printing out the result of the diagnostic test.
Examine the diagnostic test result and consult "To install
the print head", chapter "Operations essential for cor-
rect operation".
C
LEANING THE PRINT HEAD AND TESTING
THE NOZZLES
If you notice a deterioration in print quality, you can
quickly clean the print head and test the nozzles by follow-
ing a procedure that ends by printing out the diagnostic test
result with regard to its condition.
Until the display shows:
HEAD MAINTENANCE
The display shows:
NEW HEAD: ON
|
/
}
To view the other available option: "NEW HEAD: OFF".
To confirm your choice. The display shows:
CLEANING: ON
The display shows:
CLEANING: ON
The fax machine cleans the print head and tests the noz-
zles, printing out the result of the diagnostic test.
Examine the diagnostic test result and consult "To install
the print head", chapter "Operations essential for cor-
rect operation".