Service manual

EPSON FX-880/FX-1180 Service Manual
2-i
2. Operating Principles
Printer Mechanism Operation.................................................................................................................... 2-1
Printhead ........................................................................................................................................... 2-2
Carriage Unit ..................................................................................................................................... 2-4
Paper Handling Mechanisms ............................................................................................................ 2-4
Paper Paths........................................................................................................................... 2-5
Ribbon Advance Mechanism............................................................................................................. 2-9
Platen Gap Adjustment Mechanism.................................................................................................2-11
Paper Feed Motor.............................................................................................................................2-11
Circuit Operation...................................................................................................................................... 2-12
Power Supply – Circuit Types.......................................................................................................... 2-12
Power Supply Operation...................................................................................................... 2-12
Control Circuit.................................................................................................................................. 2-14