Xerox Document FaxCentre 165c Service Manual page 37

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);
reinsert the print head.
XEROX DFC165 & DWC165c Service Manual
Fig. 3-7 Cleaning the print head cleaning pad
print head
cleaning pad
3-7