Dot Missing 2 - Epson Stylus Color C70 Service Manual

EPSON Stylus COLOR C70/C80

3.1.6.7 Dot Missing 2

This section describes the procedures for solving the problem when a specific nozzle is
not firing (dots are missing). If none of the nozzles are firing and nothing is printing,
refer to the previous section.
If a specific nozzle is not firing and the dots are missing, basically nozzle cleaning
should be carried out, so that the cleaner blade can clean the surfaces of the nozzles and
some ink can be drawn out of the ink cartridge. This is often an effective way to
remedy the problem. Therefore the procedure below should be followed.
Table 3-19. Dot Missing 2
Step Check Point
1 Press the Ink Check that the mis-firing nozzle(s) gradually return to
maintenance switch on normal. If they do appear to be returning to normal, repeat
the printer to start the cleaning process until they are fully clean. If they do not
cleaning. appear to be returning to normal, proceed to step 2.
Furthermore, the dummy cleaning operation that was used in
older models is not supported by this model, so there is no
problem with carrying out cleaning operations repeatedly.
Troubleshooting
Remedy
Overview
Table 3-19. Dot Missing 2
Step Check Point
2 Can the cap unit operate Press the part shown below by hand and check that it moves
normally? and that the cap unit automatically returns.
Checking method if there is a problem with operation
1. Check that the two screws that are securing the cap unit
to the right side of the mechanism are correctly securing
the cap unit, and check that the positioning protrusion
and the hole at the top of the cap unit are aligned.
2. Check that the hooks of the cap unit are correctly secured
to the middle frame.
3. Check that the spring at the bottom of the cap unit is not
detached. Also check that the drain ink tube is attached
correctly to the bottom of the cap.
Check for No. 1
Revision A
Remedy
Automatically
Manually
Protrusion
Screws
90