Domino C Series, Operation And Maintenance Manual

Page: 91 / 92

TROUBLESHOOTING
77091 Issue 2 November 2003 91
The presence of matter in the jets could be an indication that the ink filter (IF/01)
has failed. If this is suspected, the ink filter should be replaced immediately.
Qualified service personnel only. This operation requires specialist skills or tools.
Solenoid Valve Tubing Order
Note: The printer operates with solenoid valves which are not interchangeable with valves
in other printer models.
If any solenoid valves are changed, or the syringe flushing procedure is carried out,
there is a risk that tubing may be replaced in the wrong order, creating illegible
print characters when reassembled.
Shown on the following pages are tubing order diagrams which clarify the
connections between the jets on the nozzle plate and their corresponding solenoid
valves. All valve diagrams are viewed from the rear of the print head looking
forward.
It is very important that outlet tubing from
one valve is not transposed to another valve
outlet, as this creates a character illegibility
problem. If more than one set of tubing is
reassembled in the wrong order, then
greater character disruption occurs.
However, if valve inlet tubing is transposed
to another valve inlet, this is not as critical,
as all the inlets are commonly connected
through the distribution assembly.
Trim back the tubing by a small amount
wherever removal and refitting is
performed.
Nozzle
plate
Ink line
removed from
valve outlet