SATO M-8485Se - Page 113

Page 5-16
Section 5. Mechanical Adjustments
PN 9001080
Rev. A
SATO M-8485Se Standard Print Engine
Service Manual
5.9 Ribbon Unwind/Rewind Shaft Adjustment
STEP PROCEDURE
1. Check for even/smooth ribbon tension at the ribbon unwind spool as the
ribbon travels downward past the print head. If it appears to be uneven,
proceed to Step 3.
2. Check for even/smooth ribbon tension at the ribbon unwind spool as the
ribbon travels upward from under the print head. If it appears to be uneven,
proceed to Step 3.
NOTE: Before attempting Step 3, be sure the Ribbon Guide Plate
has first been adjusted (Section 5.3).
3. Loosen the set screws on the adjustment plate Fig. 5-20. Insert a flat blade
screwdriver into the adjustment slot and adjust for even/smooth ribbon
tension at the ribbon unwind/rewind spool/shaft.
NOTE: The ribbon unwind/rewind shafts should be parallel to
each other and perpendicular to the base frame of the printer.
The ribbon unwind/rewind shaft adjustment may affect the timing
belt adjustment (Section 5-6). Readjust if required.
To adjust the Ribbon Unwind/Rewind Shaft tension perform the following steps:
ADJUSTMENT
SLOTS
LOOSEN
SCREWS
REWIND/UNWIND
SHAFTS
F
ig. 5-20