Epson Stylus Color C70, Service Manual

Page: 91 / 216

EPSON Stylus COLOR C70/C80 Revision A
Troubleshooting Overview 91
2
(Cont.)
Can the cap unit operate
normally?
Check for No. 2
Check for No. 3
Table 3-19. Dot Missing 2
Step Check Point Remedy
Hooks
Drain Ink Tube
Spring
3 Is there any dust or other
foreign matter on the
cap? And is the cap free
from damage and
deformation? If there is any dust or foreign matter on the edge of the cap
as shown below, then the head and the cap will not seal
together correctly and ink will not be suctioned correctly. If
dust or other foreign matter is present, use a cotton swab or
similar to clean it all off.
Furthermore, if the edge of the cap has been damaged in
some way, it will interfere with suctioning of the ink, and air
may be drawn into the head. If this has happened, replace the
whole of the cap unit.
After carrying out all checks, carry out cleaning once
more and check if the problem is solved.
4 Use the adjustment
program to carry out
forced cleaning (CL3)
and check if printing
returns to normal. Check that the mis-firing nozzle(s) gradually return to
normal. If they do appear to be returning to normal, repeat
the CL3 cleaning procedure using the adjustment program
until the nozzles are all fully clean. If they do not appear to
be returning to normal, proceed to step 5.
5 Use the adjustment
program to reset the
initial ink charge flag to
force cleaning using the
initial ink charge. Check that the mis-firing nozzle(s) gradually return to
normal. If they do appear to be returning to normal,
repeatedly reset the initial ink charge flag and turn the power
on using the adjustment program until the nozzles are all
fully clean. If they do not appear to be returning to normal,
proceed to step 6.
Table 3-19. Dot Missing 2
Step Check Point Remedy
Dust or some
foreign substances
Damaged Area