Epson Stylus Color 640 User Manual page 120

The printed image has horizontal banding
Possible cause
The Media Type
setting doesn't match
the loaded paper.
The printable side of
the paper is face
down.
The MicroWeave
option is not set.
The print head
nozzles are clogged.
The ink cartridges are
low on ink.
Troubleshooting
Replace the ink cartridges. If an ink cartridge is low on ink (the
B black or A color ink out light is flashing) or the ink cartridge is
more than six months old, the cartridge should be replaced.
See Replacing an Ink Cartridge
If you have vertical misalignment, run the Print Head Alignment
utility (see Aligning the Print Head
High Speed mode.
Try the solutions listed above before trying these solutions to
specific print quality problems.
Solution
Make sure the Media Type setting matches the paper you're using. See
Setting Printer Options from Windows Applications
Remove the paper and reload it with the printable side (whiter) face up.
See Media Loading and Handling Guidelines
Turn on MicroWeave in the Advanced dialog box. See
Quality and Special Effects
Clean the print head. See
Check the B black and
may need to replace. See
for instructions.
for instructions) or turn off
for more information.
Cleaning the Print Head
A color ink out lights to see which cartridge you
Replacing an Ink Cartridge
for instructions.
for instructions.
Customizing Print
for instructions.
for instructions.
Page 120