UBI EasyCoder 501 SA, Руководство по обслуживанию

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UBI EasyCoder 501 – Service Manual
45
8. PRINT UNIT, cont'd.
8.4
Stepper Motor, cont'd.
Adjustment of the pressing roller belt:
Oversized holes allow the position of the stepper motor relative to
the bracket to be adjusted so the tension of the belt does not become
too tight, causing unnecessary wear. Rotate the gear wheel 1/4 of a
turn at a time and check that the gear wheel and pressing roller can
be rotated freely by the belt, which should flex just a little when you
press it with your finger.
Adjustment of ribbon rewinder belt:
The belt should be adjusted so it neither jump the cogs nor becomes
subjected to unnecessary wear.
Slightly loosen the two #T20 Torx screws that hold the flange of the
ribbon rewind unit.
Turn the ribbon rewind unit so the belt becomes tight, yet will flex
slightly when you press it with a finger. Tighten the screws.
Check that the parts can rotate freely and without any unpleasant
sound and that the belt does not jump the cogs when you rotate the
ribbon rewind unit forcefully.
Ribbon Rewind Unit
Ribbon Return Roller