C) Unit does not purge
* Test pump pressure. Pressure should be between 2.0 and 3.0 psi. If
pressure is zero, proceed to step “M”.
* Check ink level in container and replace if empty.
* Check for kinks in tubing and replace, if necessary.
* Test for ink flow from brass cap/ink container: Crimp tubing going into
reservoir from ink container. Remove tubing from inlet of reservoir and test
for ink flow by loosening crimp (discharge into container and avoid getting
ink on circuit cards). If no flow is present, replace ink container and/or brass
cap.
* Test for ink flow from reservoir. Crimp tubing going into reservoir from
ink container. Remove tubing from inlet side of filter. Carefully loosen
crimp and test for ink flow (discharge into container and avoid getting ink on
circuit cards). If a weak ink flow or no flow is present, replace reservoir. See
LOW INK LAMP/RESERVOIR LEAD REMOVAL procedure.
* Test for ink flow from filter: Crimp tubing going into reservoir from ink
container. Remove tubing from inlet side or off-center port of valve.
Carefully loosen crimp and test for flow (discharge into container and avoid
getting ink on circuit cards). If a weak flow or no flow is present replace
filter.
Head:
D) Heavy printing
* Check dot size setting (
<SIZE>
key). Lower if needed.
* Check incoming voltage from transformer. Voltage between pins 1 and 2
on transformer connector should be approximately 20 volts AC (See
Troubleshooting Chart at end of this list.)
* Purge to remove air.
* Check individual valve adjustment (
<MENU>
then 8). Lower if needed.
* Test pump pressure (2.0_3.0 psi) if higher, adjust. See AIR PUMP
PRESSURE ADJUSTMENT procedure.
Head:
MICROJET Trouble-Shooting Guide 3
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