Epson Stylus Pro 7900 - Page 171

Pro 7900 and 9900 Field Repair Guide 10/6/10
Sensor (Carriage Encoder) Removal Printer Component, Software Item, LCD Display, Printer Button Page 171.
4. Remove the Top Cover.
5. Remove 1 Screws that fasten the Carriage Encoder in place.
Remove 1 Screw.
Right side of the Carriage
Mechanism.