Memjet AS-1180C, Service Manual

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SECTION 2
TROUBLESHOOTING
14
The ink used in this system may be harmful if swallowed.
Keep new and used printhead cartridges and ink tanks out of reach of children.
Discard unwanted printhead cartridges and empty ink tanks immediately.
The Printhead Cartridge
The Memjet printhead cartridge contains over 70,000 inkjet nozzles. These nozzles are divided into ten
rows; two rows of nozzles for each color channel. Due to the very tiny size of each nozzle and the high
number of nozzles; it is not uncommon for some nozzles to become contaminated or clogged.
CONDITION PROBLEM SOLUTION
Mixed, mottled, muddy or
distorted colors. Ink color channel mixing within the
printhead cartridge/nozzles.
Over-saturated wiper roller.
Incompatible media.
Print Engine is not level.
Printer was not powered-down
properly. Printhead may not have
been cleaned or capped. Ink system
may not have been stabilized.
Refer to “Printhead Cartridge
Conditioning”. If problem
persists; refer to section titled
“Color Mixing Issues”.
Use inkjet suitable media
Make sure the Print Engine
is level.
Make sure to power-down
the printer using the ON/OFF
button, before shutting off
the Main Power Switch.
Thin, crisp vertical line(s) of
missing color.
Clogged printhead nozzle(s).
Electrical failure or poor electrical
connection at printhead.
Clean the Printhead
Reseat the Printhead.
Replace the Printhead &
wiper roller.
Irregular or Jagged vertical
line(s) of missing color. Air in the system. Air bubbles
blocking nozzle(s). Refer to “Printhead Cartridge
Conditioning”.
Black scuff marks on media
or image smudging occurs.
Media is making contact with the
printhead surface. Install the Head Media
Guide.
Run the media in a different
orientation; if possible.
Use media that is not bent,
bowed or buckled.
Blurry/Grainy Images
Partially clogged nozzle(s).
Incompatible media.
Low quality image being sent to
printer.
Damaged/scratched nozzle surface.
Clean the Printhead
Use inkjet suitable media.
Use high quality graphics
that are compatible with your
software program.
Replace the Printhead &
wiper roller.