Service manual

Operating Principles
2-2
EPSON FX-880/FX-1180 Service Manual
Figure 1. Printer Mechanism
Printhead
The printhead transfers ink to the printed page by means of 9 wires which strike the ink ribbon as the
printhead travels across the page. Each wire has its own drive coil that is actuated by a separate signal
from the printhead drive circuitry. Figure 2 depicts one of the nine independent drive coil mechanisms.
Tractor
Rear PE Sensor
CR Motor
Timing Belt
Carriage Unit
HP Sensor
Printhead
Platen Roller
PF Motor
CR Guide Shaft
PG Adjust Lever
Ribbon Feed Mechanism
Release Lever
Front PE Sensor
Parallelism Bushing
Parallelism Bushing
Release Sensor