Aligning The Print Head - Epson 740 Setup & Daily Use

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3. When the P power light stops flashing, print a few lines from
a document to confirm that the head is clean and to reset the
cleaning cycle.
If print quality hasn't improved after repeating this procedure
four or five times, one or both of your ink cartridges may be old
or damaged and may need to be replaced. To replace an ink
cartridge before it is empty, see "Replacing an Old or Damaged
Ink Cartridge" in the online Reference Guide.
If the print quality still has not improved after replacing the ink
cartridges, contact your dealer.

Aligning the Print Head

If you notice a misalignment of vertical lines, you may be able to
solve this problem from your computer using the Print Head
Alignment utility in your printer software.
If you are using DOS, see "Aligning the print head" in your DOS
User's Guide.
Note:
Do not start the Print Head Alignment utility while printing is in
progress; otherwise your printout may be marred.
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Caution:
Never turn off the printer while the P power light is flashing.
Doing so may damage the printer.