Icom IC-UR8050 - Page 21

SECTION 5 BLOCK DIAGRAM
5 - 1
+8 V
MUTE CONT
SQL CONT
+9 V
W6
IC14B
NJM2073M
IC14A
NJM2073M
IC16B
NJM4558M
COMMON
TX
RX
DATA
T8PLL5V
12
RX ANT
CONNECTOR
#03 FL-199
#04 FL-238
FM
DET
S OUT
RSSI
NOISE
FILTER
IC5 TA31136F
FRONT UNIT
MIC BOARD
MIC
CONNECTOR
Q10 DTC114EU
Q11 2SJ144
MOD
MUTE
Q12 DTC114EU
Q13 2SJ144
DE
EMP
RX UNIT
Q1 2SC4116
D1 1SS355
#03 CFZM455E10
#04 CFZM455G
UNLOOK
DETECT
Q9 2SA1586
D13 1SS355
PLL IC
PA UNIT
DC
AMP
IC4 TA75S01F
D10 1SV270
D11 1SV270
Q4 2SC5186
CHARGE
PUMP
D14 MA8056
Q10 2SA1587
Q11 2SC4117
TX ANT
CONNECTOR
RF
DET
D1/D2 MA742
APC
CTRL
Q1 2SC4081
Q2 2SB1019
UNLOOK
DETECT
Q12 2SA1586
D5 1SS355IC3
MB15A02
PLL IC
VCO
N - DATA (RX)
Q2 2SC5186
D2 1SV270
D3 1SV270
CHARGE
PUMP
Q10 2SA1587
Q11 2SC4117
D6 MA8056
TX UNIT
MOD
AGC
MIX
AMP
MIX
AMP
PRE
EMP
MIC
AMP
SQL
SELCT
R91
INT. SQL. ADJ
AUDIO VR
LED BOARD
COR
SIMULATE
RESET
SP. MUTE
POWER
LOCAL
INHIBIT
BUSY
TRANSMIT
Q5 UMD3
Q7,Q8,Q9 DTC114EU
D1 1SS355
Q1 2SC4116
REF
MOD
IC1 AN78L05M
IC2 AN8003M
UNLOCK(T)
DO
DI
TX
SW
Q8 2SB1132
Q9 DTC114EU
+9V
+13.8V
+13.8V
BUSY
LI
DI
E
E
LO
DO
EXT PTT
+13.8V
13.8V
NC
SP–
SP+
GND
EXT PTT
LI
NC
AUX2
NC
NC
LO
E
E
E
E
E
LI
LO
EXT. interface IN
EXT.PTT
TX CONTROL
N - DATA(TX)
PTT
CONT.
D17 1SS300
Q14 DTC114EU
TX
SW
T8
SW BOARD
COR
SIMULATE
V.DET
+13.8V
D1–D16 MA6S121
S1–S12
MATRIX
SW
IC1
µPD78213
CPU
+5V
RESET
IC7 TC74HC04
IC8 S-80845ALUP
ROM
PIO
ADDRESS
DECODER
ADDRESS
SELECT
+9V
S13.8V+5 V
EXT. interface OUT
+9
REG
+13.8V
REG UNIT
+13.8V
NC
BUSY
S-METER
DI
D0
STB
D1
A2
D2
A1
D3
A0
DO
E
E
E
E
TX EXT
NOTE
GROUNDING
TERMINAL
+
–
LOGIC UNIT
LOCAL
INHIBIT
POWER
SWITCH
CDBC455X24
X2
IC12A
MJM4558M
IC2B
MJM4558M
IC13A
MJM4558M
IC13B
MJM4558M
IC15
LA4425A
R47
R_MOD. SET
R61
MIC LEVEL
SQUELTCH
VR
R2
DS1
DS7
DS4
DS5
DS6
DS2
DS3
R1
J1
LED
SW
DC 13.8 V
IC3 TA75S01F
R16
RF-POWER ADJ
VCO
IC1 AN78L05M
IC2
AN8003M
X3
CR-608
Q8
2SC2714
Q7
3SK184
IC6
CB424
D8/D9
1SV270
Q3
3SK184
D5/D7
1SV270
Q2
3SK166
D3/D4
1SV270
W1
Q5
2SC4226
Q6
2SC4226
UNLOCK (R)
IC3 MB15A02
R8V R5V
X1
CR-473
FI2
R35
LO OUT
SET
R30
DO OUT
ADJ.
R83
MOD.
SET
IC19A
NJM4558M
IC18A
NJM4558M
IC18B
NJM4558M
IC17A
NJM4558M
IC17B
NJM4558M
IC16A
NJM4558M
IC19B
NJM4558M
IC5A
NJM4558M
Q13
2SJ144
IC5B
NJM4558M
R50
MOD_ADJ
Q3
2SC4228
Q4
2SC4226
Q5
2SC3356
Q6
MRF9745
IC1
M68703LA
IC4
TA75S01F
R38
FREQ. ADJ
R43
R_MOD. ADJ
VC08V
X1
CR-608
IC6 TC74HC138
IC5 TC74HC374
IC4 NM27C256
IC9
AN78L05M
F3
RGB 20 A
IC1
NJM7809
D1
DSA3A1
P1
MF1
IC21
TA75393F
S1-1
S1-2
S1-3
RESET
S1
S1-4
SP. MUTE
SP1
Q6 DTC114EU
IC20
TC4M53F
AUX1
5
9
4
8
3
7
2
6
1
19
37
18
36
17
35
16
34
15
33
14
32
13
31
12
30
11
29
10
28
9
27
8
26
7
25
6
24
5
23
4
22
3
21
2
20
1
J10
J9
IC10, IC11
µPD4049UBG
Q3, Q4
DTC114EU
R52
LI MOD. ADJ
APCV
IC2
µPD71055