Transfer Ribbon Troubles - Intermec EasyCoder PX4i Service Manual

Chapter 17 — Troubleshooting

17.14 Transfer Ribbon Troubles

238
Description:
The thermal transfer ribbon breaks.
Possible Causes and Suggested Remedies:
• Wrong brand of ribbon.
- Check if the transfer ribbon is of an approved brand. If not, recom-
mend the customer to use approved brands only.
• Bad ribbon load.
- Check that the ribbon is routed so it runs above upper guide (that is,
the one where the upper part of the LSS is fi tted).
• Wrong paper type setup.
- Check that the printer is set up correctly for the type of thermal
transfer ribbon in use, see the User's Guide.
• Wrong printhead voltage.
- Check printhead voltage, see Chapter 15.4.
Description:
The thermal transfer ribbon wrinkles.
Possible Causes and Suggested Remedies:
• Media misalignment.
- Are the edge guides positioned so as to guide the media closely along
the printer's center section?
- Is the media supply roll as far in on the hub as possible?
• Ribbon misalignment.
- Are both the ribbon supply roll and the ribbon rewind core pressed as
far in on their hubs as possible?
• Ribbon path obstructed.
- Check that nothing obstructs the path of the transfer ribbon.
• Wrong or uneven printhead pressure.
- Check that the pressure arm is center-aligned in the relation to the
width of the media, see Chapter 8.8.
- Check the printhead pressure, see Chapter 8.8. Decrease the pressure
somewhat and test for both wrinkles and printout contrast. You may
need to feed out 25-50 cm of ribbon (1-2 ft.) before you can see any
effect.
• Bad ribbon break shaft adjustment.
- Check the adjustment of the ribbon assist roller, see Chapter 8.9.
Do not change the adjustment before you have performed all other
checks mentioned above.
EasyCoder PX4i and PX6i Service Manual