Icom IC-UR8050 Service Manual page 23

• TX, PA AND REG UNIT
8.18 V
R6
C17 C20 R5 C24
L1
100
10 µH 10 p 1 p 33 47
C13 C21
C7
470 p D2 470 p
0.022 L3 C23
1SV270
MC152 470 p
R7
R4
100 k
820
C18
R2 27 p
D3
22 R3
1SV270
C19
33 k
2.5 p
C22 R84
0.3 p 180
L2
C11 C15
10 µH
Q2 Q3
470 p R46 9 p
1 k
2SC5186 2SC4228
R49
1.8 k
R47 R48
C53
TN20-3U473L 2.2 k
0.001
CP1
C10
470 p
Q10
R32
D6
2SA1587
330
MA8056M
IC3
C8 MB15A02PFV-1
R28
C9 0.001
4.7 k
9
47
CK
10
DATA
11
R31 R29 LE
R27 12
10 33 k FC
2.7 k 13
FR
14
R33 FP
15
C6 R30
47 k 0P
16
0.047 3.9 k
0R
R25
15 k
C5
Q11 R26
1
2.70 V 4.7 k
2SC4117
R68 Q12
IC6
47 k
2SA1586
TA75S01F
C78
R34
R71 R69
0.01
100 k
100 k 47 k
5
1
4
C76 3
470 p
2
Q1
2.70 V
2SC4116
D1 R1
C4 C3
1SS355 5.6 k
0.001 10
C2 C1
0.001 10
IC1 NJM7809FA
P4 J4
1
W12 1
1 O
2
RX UNIT 2
G
W13 3 C2
J2 3
0.1 2
P3 J3
W10 1
TX UNIT J2 1
2
2
W11 3 9.1 V
3
P2 J2
W5
1
1
W6
2 2
W7
3 3
LOGIC
W8
4 4
UNIT R1
W9 R2
5
J11 5 33
W18 33
6 6
C4
0.001 REG BOARD
C30
C31 C35
C28
470 p
0.001 0.001
0.001
R9
820
R17
R13
82
180
L4
47 nH
C27 C33 C32
0.001 0.001
L6 470 p
R18
18 nH L7
R14 18 k
15 nH
22 k
C25 R10 R12 C26
C29 R79 C81 C34
3 p 15 68 12 p
12 p 22 470 p 10 p
Q4
Q5
R11
2SC4226
15 2SC3356
L5 IC5B
33 nH
NJM4558M
C54
R56
C79
C74 10 5
3.3 k
0.01
4 p 7
6 C56
120 p
R50 R51
MOD
10 k 39 k R72
150 k
R45 C55
R52 R53
56 0.01
C72 39 k 39 k
0.001
R73
C57
C59
150 k
D5 0.0022
33
8
1SS355
FIN
7
LD
6
GND
5
DO
4
R43
VCC
3 R-MOD
10 k
VP X1 CR- 608
OSO 2
OSI 1 3 2
Q14
OUT GND
2SK880
C50
C49 R44
R70
0.001
10 p 10 k
C48 33 k
4 1
VCC VCON
0.1
R86
R87
2.2 k
2.2 k
3.00 V
L10
10 µH
R40 C52 R41
33 k 470 p 100 k
C43
C47
R36
0.001
0.1 5.00 V
22 k 1.53 V
R35 1
C51 5
47 k 4
0.001
IC1 IC2
3
AN78L05M AN8003M
2
IC4
O O
TA75S01F
G G R37 R38
C41 C46 R39
22 k 22 k
10 0.01 22 k
C42 C44 C45
10 470 p 10
F-SET
P1
W2
F2 F1
3
W1
4 1
W3
F3
C1
W4 DC13.8V input
0.33 D1 5 2
DSA3A1
6 3
P5
W14
1
2 PA UNIT
3
W15
4
FRONT
P6 W1
(POWER SWITCH)
W16 1 1
2 2
S1
3 3
1/1 1/2
W17 4 4
2/1 2/2
10.6 V
J1
CHASSIS
MF1
1 1
2 2
3 3
C3
470
GROUNDING
TERMINAL
6 - 2
C38 C39
RX: 0.00 V
0.001 100
TX: 8.00 V
R85
R23 R24
10
39 39
R20
10 k
C36 R21
L8
0.001 10
R19 82 nH
1.2 k
R82
15
L9
C77 R80 R81
C37
12 nH
5 p 270 270
5 p
R22
680 RX: 0.00 V
Q6
MRF9745 TX: 9.00 V
C62
47
Q8
2SB1132
APCV
R57
Q9
C58 C75 10
22 470 p DTC114EU
C61
R83
0.001
15 k
R59 R60
10 k 1 k
C80
IC5A
470 p C84
NJM4558M MOD
10
3
8
1
2 R78
R58
R77 22 k (#03)
4
15 k
1 k
47 k (#04)
R75
3.3 k
C83
2.2
TX UNIT
Q13
2SJ144
R76 R74
1.8 k 100 k
CK
DATA
T LE
R88
R89
UNLOCK
100 k
56 k
TX. C
R90
T8
56 k
MOD
C64 C65 C66 C67 C68 C69 C70
47 p 47 p 47 p 470 p 470 p 470 p 470 p
+9V
9.13 V C63
0.1
TX UNIT J4 W1
W4
W4
1
REG BOARD
2
3
W5
4
P1 J1
W7
TX UNIT J3 1
1
W2 +9V
2 2
W3 E
3 3
J4
1
2
J3
1
T8
2
E
3
J5 P1
1 1
2
2
3
J1
1
2
3
LOGIC
4
UNIT
5 J3
6
7
E
8
J2
1
E
2
3
IC1
6 7
M68703LA
1 2 3 4 5
L4 C9
L6 L3
LA-252 4 p
LA-223 LA-252
C17 C16
C6
7 p 7 p C7
C10 3 p
1 p
1 p
C14
C15 C13
D2
470 p
10 470 p
MA742
C8
6 p
TX: 13.8 V
L5
R2
BLM21P300S
22 k
C23
0.001
Q2
C28
C27 C12
0.1
470 2SB1019 10
L7
LA-239
C35
470 p
C21
R7 0.001
IC3
270
RX: 0.0 V TA75S01F
Q1
TX: 6.0 V
2SC4081 R10
5
10 k
4
C26
0.001 R9
2
C25 33 k
R8
C9 C18 C24
0.001
47 k
10 470 p 10
PA UNIT R11
820 k
RX: 0.0 V
C32
TX: 9.0 V
470 p
L2 C1 L1
LA-252 6 p LA-252 W6
1
TX ANT
2
C5 C3 C2
9 p 1 p 5 p
D1
MA742
C4
6 p
R1 R22
22 k
NTCCF20123BH102KCT
R20
R15
C34
C11 10 k
22 k
0.001
470 p
R21
27 k
R16
4.7 k
RX: 0.0 V
TX: 2.8 V
R17
2.2 k
1
C22
3 R23
0.001
820
R13
R14
2.7 k
22 k
C33
0.001
R12
100