P) Ink not drying on product
* Check dot size setting ( <SIZE> key); lower if needed.
* Check pump pressure should be between 2.0 and 3.0 psi. If pump pressure
is out of adjustment, see AIR PUMP PRESSURE ADJUSTMENT
procedure.
* Check to be sure box is not waxy or oily (make sure substrate surface has
not changed).
Q) Nozzle plate weeps ink
* Wipe nozzle plate with a damp paper towel and check to see if ink forms
on nozzle plate.
* If ink does not form on nozzle plate, print 5-10 boxes and check. If ink
forms, replace nozzle plate tubing.
* Remove valve at location generating weeping.
* Connect valve to a 9 volt battery and flush water into outlet post with a
syringe and a piece of .040 tubing.
* Replace valve and retest.
* Connect tubing to outlet of valve from the nozzle plate and purge
* Repeat backflush and purge if necessary
* If weeping persists, replace valve.
R) Nozzle blocked
* Remove tubing from center port of valve that supplies fluid to blocked
nozzle.
* Connect drain hose (from maintenance kit) to tubing attached to back of
nozzle plate.
* Place other end of drain tubing outside of unit and drain into a container.
* Place tubing end of syringe with cleaner, over orifice that is blocked and
apply pressure (you will see fluid move down drain tube).
* Continue flushing until tubing is clear of ink.
* Disconnect syringe and reconnect tubing to valve port.
* Purge and retest.
* Repeat if necessary.
* If nozzle is still blocked, replace the nozzle plate assembly.
Head:
MICROJET Trouble-Shooting Guide 7
S) Tubing loose on valve ports
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