Citizen CL-E700 series Technical Manual page 147

General procedure how to remove ribbon wrinkles is explained here.
General:
Adjustment flow and adjustment location diagram are shown below.
Ribbon wrinkle visual check
Back tension adjustment (Left/rear side)
(With the dial of the "SA Ribbon Tension Unit R")
Ribbon Left-Right Balance Adjustment Knob adjustment
• "Cam Tension Base Adjust" adjustment (Front side)
• "Shaft Ribbon Guide" adjustment (A part of the "SA Head")
• "Cam Tension Base Adjust" adjustment (Rear side)
Tension
Cam Tension Base Adjust
(Front side)
Shaft Ribbon Guide
(A part of the "SA Head")
Removing Ribbon Wrinkles
(For user)
Parallel Pin (Dial)
Weak
Strong
[Adjustment locations for eliminating ribbon wrinkles]
Chapter 3 Disassembly and Maintenance
SA Ribbon Tension Unit R
3-
61
3-7. Adjustments
* Stronger tension will eliminate
more ribbon wrinkle.
* To eliminate ribbon wrinkles,
front side adjustment is more
effective than the rear side one.
Ribbon
Cam Tension Base Adjust
(Rear side)
Ribbon Left-Right Balance
Adjustment Knob
CL-E700 series