UBI EasyCoder 501 – Service Manual
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10. RIBBON SAVE DEVICE, cont'd.
10.8
Ribbon Rewind
Description:
The ribbon rewind spool is driven by a separate stepper motor
connected to P-2 on the connection board. The stepper motor is
fitted to the chassis by means of three #T20 Torx screws, two of
which run through oblong holes that allow the tension of the belt to
be adjusted. The lower leg of the stepper motor assy. runs through
a bracket at the top of the headlift mechanism to give the latter
additional support.
Replacement:
To replace the belt, the stepper motor unit must be removed. After
fitting a new belt, adjust as described below.
Adjustment:
Loosen the three #T20 Torx screws and rotate the stepper motor
assy. until the belt becomes tight but still runs smoothly. Adjust-
ment of the ribbon rewind unit is usually not required.
#T20 Torx Screws
Chassis
Ribbon Rewind Unit
Belt
Bracket
Stepper Motor
Bracket
