Service manual

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

ig. 5-20