MAINTENANCE, SERVICE AND FAULT FINDING
4-74 25364 Issue 8 March 2018
For Communicator II only: The print head
up / down motion is driven by a small
pneumatic solenoid. Check the following:
Check the air supply pressure and the
tubes between the components. Check
that the head is free to rotate in its
mounting. Check the solenoid wiring.
Replace the solenoid and / or the air
cylinder as required. If the fault persists,
replace the stepper card.
The print head carriage
does not move
A stepper motor, drive belt and linear slide
are used to move the print head. If the
head does not drive, check the following:
The drive belt and drive pulleys.
Are the stepper motor connections
correct? Check the condition of the linear
slide. With the power to the unit turned off,
is the print head free to move along the
slide?
If the fault persists, board replacement
may be required.
Ensure that the printer is ready to print, as
the print head retracts when the printer is
not ready (for example, if no design has
been selected).
Roller alignment Pick up the printer and rotate the ribbon by
hand by winding on the rewind spool or
cassette. Look at the ribbon that goes
around the rollers and visually note
whether the ribbon is pulling to one side. If
this is the case the rollers may be out of
alignment. Contact the supplier.
Problem Action
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