Stylus Pro 4880 Field Repair Guide 1/17/08
Carriage Removal Procedure Printer Component, Software Item, LCD Display, Printer Button  Page 35.
7. Move the Carriage Mechanism at the removal slot as shown. Compress the Tension Springs 
against the Front Carriage Rail, and lift out the Carriage.
Removal Slot
Be careful to free the 
Carriage Timing 
Strip