JRC JMA-5212-4, Service Manual

Page: 21 / 172

2-9
2.3.2. Display System
Radi
ater
Motor
Rotar
y
Jo
in
t
BW Co
nt
rol
Be
a
ri
n
g
E
n
code
r
Motor Co
nt.
Cir
cul
a
to
r
D
iode
Li
mit
e
r
LO
Control
MIC
RS
48
5
I/
F
BP
F
LO
G
AM
P
M
agne
tr
o
n
DA
C
LO
G
AM
P
MIX
Tx
C
ont.
CP
U
S
c
ann
er NKE-
2103/
22
54
T
UNE
indi
ca
to
r
bu
ff
er
Po
w
e
r s
u
pp
ly
IF
A
M
P
TI
V
D
B
P
/B
Z
+15V
+8V
HV
-7V
Pu
ls
e
T
rans
VD
BP/BZ
TI
Rel
ay
NMEA
I/F
RS
48
5
I/
F
Po wer suppl y
Fi
lt
e
r
P1
2
V
+12
V
-1
2
V
+5V +3.
3V
DC2
4V
-10%
+30%
GY
R
O
L
O
G
/G
P
S
C
o
m
p
a
s
s
/C
o
m
p
a
s
s
NMEA
I/F
NMEA
I/F
R
S
23
2C
I/F
NMEA
I/F
GP
S
R
e
a
r
c
o
nn
ec
to
r
PC
NAV1
/A
IS
N
AV2
+12
V
RADA
R P
R
O
C
E
S
S
U
N
IT NDC-1460
IS
W
SE
L
AD
C
Mai
n
PC
B
PW
R
SW
DS
P
radar
DS
P
ARP
A
BP
/B
Z
VD TI
Radar draw
A
S
IC
S
c
an c
onv
ert
Sc
an c
o
rr
elati
on
T
rai
l proc
es
s
K
e
y
Boar
d
NCE
-7699A
RS4
22
I/F
R
S
422
I/
F
Tr
ac
k
B
al
l
Bu
ze
r
CPU
Key Matr
ix
MU
L
T
I
Fr
a
m
e
Me
m
o
ry
R
adar
ec
ho
R
adar t
rai
ls
Su
b
CP
U
E
n
c
oder
RA
IN
S
E
A
EB
L
PS
/2
GA
IN
VRM
T
rac
k
bal
l
(opt
ion)
15 i
n
c
h
L
C
D
P12V
+12 V
+5V
Di
s
p
la
y
NW
Z
-16
4
An
a
lo
g
R
G
B
opti
on
Graphi
c
s
A
S
IC
MAP dr
aw
Graph
ic
s
draw
Fr
a
m
e
Memo
ry
MAP
Grap
hic
s
LDI
I/F
RGB
Po
w
e
r
s
u
ppl
y
s
w
eep m
e
m
o
ry
S
ig
nal proc
ASIC
S
T
C
/FTC
/C
FA
R
IR
/A
V
E
/GZ
al
ar
m
D
C
24V
-10% +30
%
Ext
e
rnal
Di
spl
ay
SI
O
SI
O
SI
O
SI
O
32bit b us
32bit b us
Ma
in
CP
U
Communi
c
a
ti
on
Us
er
I/F
Ma
in
C
o
n
tr
o
l
SD
RA
M
work
FRO
M
pr
ogram
SR
A
M
Bac
k up
opti
on
M
O
NI
T
O
R
UN
IT
N
W
Z
-1
6
4
Figure 2.3 Functional System Diagram of the Display System