39
I-Class Mark II Maintenance Manual
Troubleshootin
Fault Messages (continued)
Displayed
Message
Description Solution LED Status
Load Ribbon
No rotation,
sporadic
movement, or
unusable sensor
values have
been detected
for the Ribbon
Supply.
Ensure that ribbon is correctly installed, that the
Printhead is latched, that the Leveling Cam is
adjusted, and that the printer is calibrated (see
the Operator’s Manual).
If the problem persists, it can be due to one of
following reasons:
1) The Ribbon Supply Hub may be bound; identify
then clear the obstruction.
2) The ribbon core may be loose on the Ribbon
Supply Hub; install a ribbon with a core that is
within specification.
3) The ribbon may be slipping over the media.
Possible causes include an incorrect media /
ribbon combination, a worn Platen, or a
severely misaligned printhead assembly;
proceed accordingly.
4) Possible damaged timing disk; replace the
Ribbon Supply Hub (see Section 4.14.1).
5) Possible defective Main Logic PCB; replace it
(see Section 4.9).
RED: ON
GREEN: OFF
Printer Cooling
A high printer
temperature has
caused a
shutdown.
Turn OFF the printer. Then, when cooled, turn ON
the printer. If the problem persists, it can be due
to one of following reasons:
1) The location may be too hot; move the printer
to a place that does not exceed 100°F (38°C)
ambient.
2) Enter DIAGNOSTICS / SENSOR READINGS then
examine the THR value: If 000 or 255, the
Printhead or Printhead Cable may be defective
(see Section 4.6).
RED: ON
GREEN: OFF
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