000874710
IC503
SYSTEM CONTROL
IF
AMP
LPF
LPF
DETECTION
PULSE
DETECTION
IF AGC
HPF1
PHASE
CIRCUIT
CONSTANT
CURRENT
CIRCUIT
LEVEL
DETECT
CIRCUIT
HPF
OR
NOISE
AGC
PULSE
DET2
GATE
PULSE
PULSE
DET1
+
BUFFER AMP
HIGH
PASS AMP
CONSTANT
CURRENT
CIRCUIT
CONSTANT
CURRENT
CIRCUIT
TU V
DD
16
15
14
13
12
AF
AMP
52
53
55
57
58
64
CB
PTT
CB
SI
CB
SO
DISP SCK
CB
AU
MUT
CB
SCK
SW2
SW1
SW3
1
2
3
4
5
6
7
8
SW4
SW5
9
10
11
000684180-T
IC2
AM NOISE CANCELLER
AF
AGC
3
BUS
ACC
BU 14V
Q702
Q703
SWITCH-
ING
Q701
SWITCH-
ING
Q508,
D515
SW5V
61
SPEED
REGULATOR
STABILIZER
Q502
Q501,
D501
L501
V
DD
POWER
SUPPLY
CONT.
POWER
SUPPLY
POWER
SUPPLY
CONT.
POWER
SUPPLY
Q503
Q504
SW5V
44
SW5V
000674280-T
IC501
BUS DRIVER
14
3
2
1
13
12
11
5
SW5V
16
8
BUS
RST
BUS
SI
BUS
SO
BUS
SCK
BUS
SI
BUS
SO
BUS
RST
BUS
SCK
V
DD
BUS-
BUS+
9
V
SS
5
14
BUS
C/D
BUS
C/D
13
15
BUS
CS
BUS
CS
7
XO
XI
6
X501
(6.29MHHz)
10
CN701
(BUS
TERMINAL)
DISP
SO
DISP
SCK
DISP
CE
INTERFACE
Q512
INTERFACE
INTERFACE
DISP SO
17
Q511
Q513
BU14V
PL651~656
LAMP
DRIVE
Q506,507
DISP CE
18
19
CN702
(BUS
TERMINAL)
CB
A.MUTE
CB
PERM
INTERFACE
Q525
INTERFACE
Q523
Q526
CB
SO
CB
SI
CB
SCK
CB
PTT
INTERFACE
Q521
INTERFACE
Q513
DISP SCK
DISP SO
DISP CE
DISP SCK
DISP SO
DISP CE
CB
PERM
INTERFACE
Q704
CB AU MUT
CB
AU
MUT
CB PERM
CB
PERM
CB SO
CB SI
CB
SO
CB
SI
CB SCK
CB
SCK
INTERFACE
RM-G45(PA)
BLOCK DIAGRAM
RM-G45PA
26