602E52970
6-5
•
foreign body on printing nib: remove it taking care to avoid touching the
electrical contacts on the print head
•
air bubble in the ink: carry out the CLEANING (see section 6.1.3) followed by
the PRINT CHART test (see section 6.1.4); if the fault persists, repeat the
CLEANING up to three times, and then replace the print head if this does not
have the desired effect.
6.1.2.2 Checking the Electrical Circuits
Check the message indicating the result of the test:
- ALL NOZZLES OK
all the electrical circuits are working
- NOZZLES DAMAGED:
circuit(s) xx (yy, zz) error: remove the print head,
xx yy zz
clean the electrical contacts on the print head with
a dry swab and the electrical contacts of the print
carriage with a soft, dry cloth, then reinsert the print head and repeat the
NOZZLES TEST. If another faulty circuit is indicated, reinsert the print head
several times until the fault has been eliminated; if the fault persists on the
same circuit (xx / yy / zz) after installing a new print head, replace the print
carriage (see section 7.2.14).
6.1.3 PRINT CHART
(not active with a colour print head)
This test
MUST
be carried out after replacing: the printer unit, motherboard, carriage,
carriage motor or paper motor.
Setting
Display
a) The facsimile machine is in standby mode
AUTOMATIC RX
09-05-95 14:58
b) Get access to the system test menu and select the
PRINT CHART option
c) Make sure that there is paper in the ASF and then press
: the test chart shown in fig. 6-4 is printed out.
d) With reference to the figure, check that:
•
lines 1, 10, 11 and 12 delimit the
printable area
on an A4-size sheet (about 208
x 290 mm)
PRINT CHART
/
/
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/
®
PRINT CHART
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