Olivetti 490, 450 manual Maintenance Operations, To Replace the Print Head

Models: 450 490

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MAINTENANCE OPERATIONS

TO 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".

CLEANING 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".

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Olivetti 490, 450 manual Maintenance Operations, To Replace the Print Head, Cleaning the Print Head and Testing Nozzles