Read Sharp ER-A490 (serv.man4) Service Manual online
2.
Tran
s
m
issio
n
c
o
n
trol
proc
e
d
u
re
m
a
trix
1) Do
w
n
-l
o
a
d
in
g
matrix f
o
r
th
e h
o
st
STATE
In
itia
l
Afte
r
s
e
n
d
in
g
I
D
E
N
Q
After
sen
d
in
g
text
EVENT
0
1
2
ENQ
—
—
—
ACK
—
S
e
n
ds text an
d
g
o
e
s
t
o
2
.
S
e
n
ds text an
d
g
o
e
s
t
o
2
.
S
e
n
ds EOT an
d
t
h
e
n
g
o
es to 0
.
(Norm
a
l e
n
d)
NAK
—
—
Resen
ds the
text an
d
t
h
e
n
g
o
es to 2
.
If t
h
e
h
ost h
as resen
t t
h
e
t
e
x
t
two t
im
e
s
, i
t s
e
n
d
s
EOT a
n
d
g
o
es to 0
.
(ERROR END)
EOT
—
—
T
h
e
h
ost go
es to 0
.
(ERROR END)
TEXT
—
—
—
T
IME-UP
—
Resen
ds
ID
ENQ
a
n
d
t
h
e
n
g
o
e
s
t
o
1
.
If
t
h
e
h
ost
h
as resen
t
ID ENQ two t
im
es,it s
e
n
d
s
EOT a
n
d
g
o
es to 0
.
(ERRO
R END)
Resen
ds the
text an
d
t
h
e
n
g
o
es to 2
.
If t
h
e
h
o
s
t h
as r
e
s
e
n
t t
h
e
text two
ti
m
es,it sen
ds EOT a
n
d
g
o
es to 0
.
(ERROR END)
KEY ENTRY
S
e
n
d
s
ID ENQ an
d
g
o
e
s
t
o
1
.
—
—
T
im
e
-u
p
:
O
n
e
secon
d
a
fter sen
d
in
g
of ID ENQ.
F
o
u
r
s
e
c
o
n
d
s
a
fter sen
d
in
g
of te
x
t.
1 – 9
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