XEROX DFC165 & DWC165c Service Manual
3-7
8) Analyse the print chart as follows:
•
Check that there are
no gaps
in the numbered scale and that there are
no
horizontal white lines
in the black areas: under these conditions, which
indicate that the print head has been inserted correctly and is in perfect
working order, type
1
:
the facsimile machine returns to stand-by and is ready
for use
•
If there are
gaps or white lines
, type
0
to repeat the nozzle cleaning proce-
dure: if the new print chart is still unsatisfactory, repeat the procedure again
•
If the printing quality is still not up to the required standard after the proce-
dure has been performed three times, proceed as follows until a satisfactory
print chart is obtained:
-
Make a copy of a document with the desired type of graphics and text
and assess its quality.
-
Change the type of paper (the paper you are using may be too porous)
and repeat the procedure.
-
Remove and reinsert the print head.
-
Remove the print head and check that there is no foreign body on the
printing nib; if there is, remove it with care, taking care not to touch the
electrical contacts; slide the print carriage to the right, then clean the print
head cleaning pad using a cotton swab soaked in water, taking care not
to leave any fluff (Fig. 3-7);
Fig. 3-7 Cleaning the print head cleaning pad
reinsert the print head.
print head
cleaning pad
