Transfer Ribbon Troubles; Transfer Ribbon Gets Wrinkled; Transfer Ribbon Breaks - UBI EasyCoder 501 Service Manual

UBI EasyCoder 501 – Service Manual
26. TROUBLE SHOOTING, cont'd.
26.4

Transfer Ribbon Troubles

Transfer ribbon gets wrinkled

• Check the alignment of the paper web. Are all guides positioned
as to guide the paper web closely along the printer's centre-line
wall? Is the paper roll pressed as far in on the unwind unit as
possible?
• Check that nothing obstructs the path of the transfer ribbon, e.g.
cables to the printhead or label-taken sensor.
• Check the printhead pressure, see chapter 24.3. 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 decide if the adjustment have produced the desired
result.
• Check the adjustment of the ribbon return roller, see chapter 24.3.
Do not change the adjustment before you have performed all
other checks mentioned above.
• Check that the ribbon unwind bobbin is centre-aligned in relation
to the transfer ribbon as described in chapter 7.2.
• Check the brake torque of the ribbon unwind and rewind shafts,
see chapters 7.2 and 7.3.
• In case of a printer fitted with a Ribbon Save Devices, refer to
chapter 26.6.

Transfer ribbon breaks

• Check that the ribbon is loaded correctly and is of a quality
approved by UBI.
• Check that the ribbon unwind shaft has not become stuck, see
chapter 7.2.
• Check that the ribbon is fitted above the label stop sensor.
• Check that the printer is set up for the type of thermal transfer
ribbon in use.
• Check printhead voltage on Testpoint P24, see chapter 17.7.
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