Olivetti 450 Manuel D’Utilisation

6

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If, after the print head has been installed, the "CHECK PRINT
HEAD" message appears again, try removing it and then
reinserting it, pressing it more firmly into position. If the mes-
sage remains on the display, remove the print head and
clean the electrical contacts of the print head and the car-
riage, see "To clean the electrical contacts of the print
head", chapter "Maintenance operations".

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To replace the print head, see the section "Maintenance op-
erations".

Once the print head has been inserted, the fax machine starts
the  nozzle cleaning and checking procedure, which is com-
pleted by:

• the printing, on the sheet loaded automatically, of a diagnostic

test sheet containing:
-

a numbered scale, for checking the flow of ink and the
electrical circuits of the print head nozzles.

-

a group of graphics and text, so that the printing quality
may be evaluated.

• the display shows the message: "CHECK PRINT OUT",

"1=EXIT  0=REPEAT".

Examine the print test sheet as follows:

• Check that the numeric scale is not interrupted at any point

and that the black areas do not  present any horizontal
white lines: in these conditions, which confirm that the print
head has been inserted correctly and is working properly, set
the value 1.  At the end of the procedure, the fax machine will
return automatically to the initial stand-by status.

AUTOMATIC

        25-03-04     11:23

• On the other hand, if there are any interruptions or white

lines present, set 0 to clean the nozzles again:
- if the new print test continues to be unsatisfactory, repeat the

procedure another time.

- If the print test result is satisfactory, press the 

 button to

exit from the procedure and return the fax machine to its initial
stand-by status.

When the print head is about to run out of ink, the display
shows:

INK LOW

When there is no more ink, the display shows:

OUT OF INK

To replace the print head, see the section "Maintenance op-
erations".

To buy new print heads, see the corresponding codes at
the end of the manual.

  

The display shows:

FORMAT:A4

     

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Until the desired paper format  is displayed.

  

To confirm the setting.

  

The display shows:

AUTOMATIC
CHECK PRINT HEAD

The print head 

provided with the machine allows you to print up

to 80 pages*, whereas the print heads that you will buy subse-
quently have a greater capacity and will thus allow you to 

to 450 pages*.
  * Based on Test Chart ITU-TS n.1 (black coverage = 3,8%).

1. Open the operator console, as indicated by the arrow, until you

hear a click.

2. Lift the print head compartment cover using the lever, as shown in

the figure.

3. Remove the print head from its package and, holding it on both

sides, peel off the film covering the nozzles.

4. Avoid touching the nozzles and the electrical contacts.
5. Place the print head in its compartment with the electrical contacts

facing downwards.

6. Push the print head until it clicks into place and close the print head

compartment cover and the operator console.

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Remember to use, once you have run out of the print head
provided with the machine, only non-rechargeable print
heads  (single-block).