Printronix SL4M Reference Manual page 96

Chapter 3
Coupler System
Coupler
Handle
Coupler
Position Indicator
Use the coupler handle to adjust the coupler so that the coupler
position indicator points to the correct color on the colored position
strip.
Aligning the tabs, install the lower front cover (see page 95).
Secure the lower front cover to the printer using the thumbscrew.
96
Coupler
Colored
Position Strip