Epson MX-80 Technical Manual page 14

2.1 General
This chapter provides the descriptions of signals at the various connectors electrically inter
connecting such major components units as printer mechanism, driver circuit board, control
circuit board and control panel of the EPSON MX-80 Dot Matrix Printer, and explains the
operating principles of the various mechanisms around the electric circuits of the Printer.
2.2 Block Diagrams
The flow of signals through the respective major components of the MX-80 is shown in Fio
2.1.
M-3210 Printer Mechanism
CN6 (28-pin. male-type)
iz
CN6 (28-pin, female-type)
Driver ci'cuit board
Control panel
9 leads
CN6
CN4 (22-pm.
male-type)
7 \
CN4 (22-pin.
female-type)
(3-pin, male-type) Control circuit board
CN2 (8-pin. male-type)
— — CN3 (26-pin,
female-type)
Transformer
CN5 (22-oin.
male-type)
Iz
CN5 (22-pin.
female-type)
CN1 (36-pln.
female-type)
Power filter
AC 115/220/240V
Fig. 2.1 Flow of Signals
Refer to Tables 2.1 through 2.5 for the pin assignments of respective connectors.
2-1
REV. A