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NovaJet 500/630/700 Series Service Manual
MAINTENANCE
Maintenance 3-7
Cleaning the flex cable contact area is very important due to the ease
of which this area can become dirty. The flex for the yellow cartridge
is deceiving because it is not readily apparent that it is dirty. This
also causes the cartridges to not receive all of the electrical signals for
a proper firing of the jets. This can be seen as a misfiring of the
cartridge.
NOTE
Care should be used when handling the flex cable con-
tact area. Avoid touching the contact area because the
oils on your skin can contaminate the area and result
in misfiring of the inkjets.
Clean the flex cable contacts by gently dabbing the area with a cotton
swab soaked with NovaKlean™.
Clean and Inspect Stepper Motor Gears
The stepper motor gears can become dirty and after time if not
cleaned up, it could cause wide banding in the print. This will reduce
the quality of the intended output. Clean the motor gears with a stiff
brush to knock off any debris. A cotton swab soaked NovaKlean™
can be used to remove any ink that may have accumulated on the
gears.
Clean and Inspect MPWA
Foreign material on the MPWA could short out electrical signals
being developed on the MPWA and cause erroneous prints or even
damage to the MPWA. All electrical circuits should be free of foreign
material, especially those materials with conductive properties.
Clean the MPWA by blowing the objects away or gently brush them
aside with a soft brush if required.
Inspect the MPWA for any damage to the board, connections, or any
of the components on the board. Replace board if inspection reveals
any damage or flaws that could effect the function of the MPWA.