Major Components; Fig. 1.2 Main And Driver Circuit Boards - Epson MX-80 Technical Manual

1.5 Major Components
The MX-SO consists, in a broad classification, of the following four major components.
(1) Model 3210 printer mechanism
This mechanism is an assembly of all the mechanical functions of the MX-SO, and con-
sists mainly of two stepper motors, a print head, a ribbon feeding mechanism, a carriage
assembly, sensors and a frame section. One stepper motor functions as the print head
carriage motor, while the other works as the paper feeding motor. The M-321 0 has been
designed extremely simple to permit easy maintenance as described later in this
manual.
Fig. 1.1 M-3210 Printer Mechanism
(2) Circuit boards
The MX-SO is provided with two printed circuit boards as the standard equipment. One
printed circuit board functions as a main circuit board (control circuit board) with an LSI
S049 for printer control. On the main circuit board, the other printed circuit board serving
as a driver circuit board is secured with two screws. The M-321 0 is controlled through
the 2S-pin connector attached to the driver circuit board.
Main Circuit Board
Driver Circuit Board
Fig. 1.2 Main and Driver Circuit Boards
1-3
REV. A