Epson R220 - Stylus Photo Color Inkjet Printer, Service Manual

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EPSON Stylus Photo R220/R230 Revision A
TROUBLESHOOTING Unit Level Troubleshooting 35
Table 1-26. Check Points for Print Quality Problems
Occurrence
Timing
Position of CR
Phenomenon Detail
Faulty Part/
Part Name
Check Point Remedy
During operation
-
[Phenomenon 1]
When the printer is performing the
Cleaning task, the ink is not drained into
the Waste Ink Pad in spite of the correct
function of the Pump Unit.
The ink is not absorbed from the Print
Head to the Cap at all.
[Phenomenon 2]
When the printer is performing the
Cleaning task, the ink is drained into the
Waste Ink Pad. (This indicates that both
of the Pump Unit and the Cap Unit are
working correctly.) However, missing
dots is not solved at certain nozzles even
performing the Cleaning several times.
[Phenomenon 3]
When the printer is performing the
Cleaning task, the ink is drained into the
Waste Ink Pad. (This indicates that both
of the Pump Unit and the Cap Unit work
correctly.) However, the wiping function
is not executed correctly and some
different colors of ink mix together.
[Phenomenon 4]
When the printer is performing the
Cleaning task, the ink is drained into the
Waste Ink Pad.However, some missing
dots occurs in some nozzles while
printing.
[Phenomenon 5]
When the printer is performing the
Cleaning task, the ink is drained into the
Waste Ink Pad. However, missing dot
occurs and the points where it occurs
varies in every movement of the
Cleaning.
Ink System
1. Check if there is not any foreign matter on the sealing
rubber on the Cap Unit.
2. Check if the sealing rubber on the Cap Unit is not
damaged.
3. Check if the Compression Spring, 2.53 is properly
attached in the Cap Unit.
4. Check if the Pump Tube is properly connected to the
bottom of the Cap Unit.
5. Check if the Extension Spring, 0.788 has not detached
from the Slider Cap.
6. Check if the Extension Spring, 0.441 has not detached
from the Slider Cap.
1. Remove the foreign matter from the sealing
rubber.
2. Replace the Ink System with a new one.
3. Replace the Ink System with a new one.
4. Replace the Ink System with a new one.
5. Reassemble the Extension Spring, 0.788
correctly.
6. Reassemble the Extension Spring, 0.441
correctly.
Sealing rubber
Compression
Spring, 2.53
Contact point of
Pump Tube
Extension Spring, 0.788
Extension Spring, 0.441