Xerox Document FaxCentre 165c Service Manual page 87

3) a message providing the result of the test run on the electrical print head
circuits.
6.1.2.1 Checking the Ink Flow
Check the numbered scale:
- if all the lines that make up the scale are present, all the nozzles are working
- if one or more lines are missing, the fault could be due to one of the following:
• dirty printing nib: clean the rubber print head pad
• 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.
XEROX DFC165 & DWC165c Service Manual
(1)
(2)
(3)
Fig. 6-3a
6-5