Principles Of Operation - Epson FX-870 Service Manual

4 Disassembly/Assembly
This chapter lists the tools you need and gives the recommended procedure for removing
and replacing components.
5 Adjustments, Maintenance, and Lubrication
This chapter provides instructions for performing the platen gap adjustment and the
bidirectional adjustment procedure. There is also a description of the lubricants required
and an illustration of the points at which the printer needs to be lubricated after repair of
the mechanism.

6 Principles of operation

The Principles of Operation section explains the theory
printhead function, carriage movement, paper feeding, and ribbon feeding. The chapter
provides details about how printer components function mechanically and electronically.
At the end of the chapter, there is a section for dealers outside the U.S. who need to replace
individual components on the circuit boards.
7 Reference Materials
The Reference Materials section contains pin assignment tables, board layout diagrams,
circuit diagrams, and schematics.
Index
The index tells you where to find key words
vi
of
printer operation, including
and
phrases in the manual.