Stylus Pro 4880 Field Repair Guide 1/17/08
Platen Gap Adjustment Printer Component, Software Item, LCD Display, Printer Button  Page 164.
10. Place the Platen Position Detent device in the position shown below, and tighten the 2 Screws.
11. Depress the Menu button to store the value.
11.1 The Printer will display Updating Parameter.
Turn until the Stopper 
is resting in the first 
Detent (the detent has 
an arrow pointing at it).
Tighten the 2 Screws.