Control Circuit Diagram - Epson FX-80 Operation Manual

C. Control Circuit Diagram
The control circuit diagram is as shown below.
MASTER CPU
SLAVE CPU
7811
.Jj
8042
(ROM 4K)
{j.
(ROM 2K)
•
ALE
~I
I
I
RAM 4K
r
SW 1
~
LATCH
ROM 8K
I~t
I
I
-y
"II' ..(
~
"It ..('
~
11.
ADDRESS/ DATA BUS
\
'I
NTOR L BUS
I
L
~
C
t'
TO
T
k;:i
SW 2
I
11
y
r
I
PC 4
PC S
.
~
DRIVER
'>
v
.
.
~
DRIVER
'>
~
"=
,.
I
Yei
I
""
~
'"
v 7
V
SWITCHES INDICATORS
"J
CR
MOTOR
HOME
MTS
PRINT
HEAD
LF
MOTOR
M-3510
PRINTER
MECHANISM
I
PARALLEL SERIAL
HOST COMPUTER
C-l
I
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i.
I
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