Epson cx4900 Guía Del Usuario

If your printouts are unexpectedly light, colors are 
missing, or you see light or dark lines across the 
page, you may need to clean the print head. This 
clears the print head nozzles, which can become 
clogged if you do not use the product for a long time.

We recommend that you turn on the product at least once a month 
to maintain good print quality.

You can print a nozzle check pattern to see if any 
print head nozzles are clogged, or to check the results 
after cleaning the print head.

1.

Turn off the product.

2.

Load A4-size plain paper (& page 8).

3.

While holding down the B ink button, press and 
hold down the P On button for about three 
seconds.

The product turns on and prints a test pattern. It 
also shows the percentage of ink left in each 
cartridge:

4.

Examine the nozzle check pattern you printed. 
Each staggered line should be solid, with no 
gaps, as shown.

■

If your printout looks okay, the print head 
does not need to be cleaned yet.

■

If you see any gaps, as shown below, clean 
the print head as described in the next 
section.

Follow these steps to clean the print head so it can 
deliver ink properly. Before cleaning the print head, 
run a nozzle check to see if the print head needs 
cleaning (& “Checking the print head” on page 20).

❏ Print head cleaning uses ink, so clean it only if quality declines.

❏ If the B ink light comes on or flashes, you cannot clean the print 

head. You must first replace the appropriate ink cartridge 
(& “Replacing Ink Cartridges” on page 17).

1.

Make sure the product is on and the B ink light is 
off.

2.

Hold down the B ink button for three seconds 
until the On light starts flashing. A head cleaning 
cycle begins and the On light stays flashing.

c

Never turn off the product while head cleaning is in progress. 
You may damage it.

3.

When the On light stops flashing, print a nozzle 
check pattern to check the results (& “Checking 
the print head” on page 20).

If there are still gaps or the test patterns are faint, 
run another cleaning cycle and check the nozzles 
again.

If you do not see any improvement after cleaning about four 
times, turn off the product and wait for at least 6 hours. This 
lets any dried ink soften. Then try cleaning the print head 
again. If quality still does not improve, one of the ink 
cartridges may be old or damaged and needs to be replaced 
(& “Replacing Ink Cartridges” on page 17).

If you notice that vertical lines are not aligned 
properly on the nozzle check printout, you may be 
able to solve this problem by aligning the print head.

You can align the print head by pressing the buttons, 
or you can run the Print Head Alignment utility from 
your computer. For the most accurate alignment, the 
utility is recommended.

Follow these steps to align the print head using the 
buttons:

1.

Make sure the product is turned off.

2.

Load A4-size plain paper (& page 8).

3.

While holding down the k [Copies] button, 
press and hold down the P On button for about 
three seconds.

Four rows of alignment patterns are printed.

4.

Look at pattern #1 and find the patch that is most 
evenly printed, with no noticeable streaks or 
lines. 

5.

Press the k [Copies] button until the number for 
that patch appears in the k [Copies] window.

6.

Press the x Start D [B&W] button.

7.

Repeat steps 5 and 6 for each of the other 
alignment patterns.