Icom IC-F50 Service Manual page 74

SECTION 11 VOLTAGE DIAGRAM
11-1 MAIN UNIT
VCC
T5V
S5V
+5V
R103 120 k
NJM12902V
C211 R102
IC5 X2
4.7 22 k
BAL 13 CR–763
14 1 4
VCON VCC
REF 12
2 3
R104 GND OUT
220 k
R97
1 k
15.3MHz
1.2Vp–p
CP1
LVIN
C209
0.001
S5V
R5V
L29
PLL
1.8 H
UNLK
R117 D37 R93
4.7 k MA2S111 1 k
SCK
R118
9 8
4.7 k CLOCK FIN
SO 10 7
DATA LD
PLST 11 6
LE GND
12 5
FC DO
13 4
NC VCC C161
14 3
FOUT VP 10 P
15 2
P CSCOUN
16 1
B OSCIN
2SC4116 BL
IC4
MB15A02PFV–1
R5V
0
5.0
5.0
0
+5V
VCC
S5V
T5V
Q22
F1
2SA1577Q
0434003.NRP E Q21
2SA1577Q
ERBFE3R00U [OTHER]
4
1 2
3
2
2403 1
Q26
TPC6103
R169 100 k
D12
MA2S111
I O
G
IC7
EW–460
Q29
DTC144EU
VCC
36
VCC
35
34
+5V
33
S5V
32
31
30
29
CSFT
28
DAST
27
MRDF
26
MDIA
25
UNLK
24
TEMP
23
RSSI
22
LVIN
21
20
CDEC
19
SDEC
18
NOIS
17
MTCK
16
MTDT
15
EXOE
14
EXSM
13
SCAT
12
PLST
11
SCST
10
MSCK
9
MDIO
8
SCK
7
SO
6
SIGNAL
5
CDCS
4
TONE
3
2
J1 MIC
1
54104–3692
VCC
T5V
Q17
RX VCO
R84
2SC4116BL
4.2
6.8 k
C124
5 P C
L27
Q18 1.8 H 10 P D
2SK880 Y
L421.8 H
R89 10 k
R95
1 k
L28
1.8 H
C127 TX VCO
6 P C
9 P D
R92 R90 R87 L43
120 k 220 k
470 k 1.8 H
R106
82 k
L32 C205
5 P
18 nH
R111 R113
100 k 390 k
S5V
R5V
R39 47 IF IC
0
0 IC1
4.8
TA31136FN
3.1
C165
1 16
0.01
OSCIN MIXIN 15
2
OSCOUT GND
2 1 3 14
C163 C166 MIXOUT N–REC
4 13
3 P C168 0.1
4 P 5 4 3 VCC N–DET
5 12
IFIN RSSI
6 11
FI2 DEC IFOUT 10
7
ALFYM450=K FILOUT QUAD
8 9
FILIIN AFOUT
R44
100 k
C169
0.1
0
C69
470 P 1.1
Q34
R45
68 k
3 MULTI 5.0
5.0
+5V
Q23
2SB1132Q
TEMP
Q25
DTA144EU
C170
0.1
R152 C172
0.001
560 k
TONE
S5V
R147
4
100 k
V+
GND
11 IC5
NJM12902V
SIGNAL
IC5
IC5
NJM12902V
NJM12902V
CDEC
10
R184 100 k
8 7
R186
9
470
R185 470 k
C225
470 P
SDEC
S1
11 - 1
R83
3.8
6.8 k
C123
Q13
12 P D
2SC4226 R25
4.0
15 P C
C118
0.5 P
R85 6.8 k
R79 6.8 k
R81 4.7
C126
18 PD Q14 Q11
15 P C
2SC5107 O
2SC4226 R25
C113 0.3 P
Q12
4 3
Q16
2SC5107 O
1.7
DTC144EU
2
0
MP7
5 1
R78
0
Q15
680 C
XP1214
1.9
560 D
R5V
C49
5 P
0
4.4
0
4.6
C41
5 P
C61
100 P
C62
82 P
FI1
C58 R33 R32 C51
FL–335
0.001 150 100 0.001
L11
MIX
15 nH D
Q4 Q3
12 nH C
2SC4215 O 3SK299 U73
IF AMP
0
0
0.9
4.8
R119 C228
10 k 0.001
1 24
VIN1 VIN8
2 23
VOUT1 VOUT8
3 22
VOUT2 VOUT7
4 21
VIN2 VIN7
5 20
VDD GND
6 19
LD RESET
7 18
CLK VDAREF
8 17
DI DO
9 16
VIN3 VIN6
10 15
VOUT3 VOUT6
11 14
VOUT4 VOUT5
12 13
VIT4 VIN5
R155
IC6
10 k
M62363FP–650C
C171 4.7 R153 150 k
IC11 TC4W53FU
R151 68 k
1 8
2 7
3 6
4 5
IC5
NJM12902V
2
1 R133
3 18 k
C265
0.001 +5V
SPLATTER
C223 0.1
R183 R182 R181
22 k 22 k 22 k
5
R130 R131 R132
2.2 k 2.2 k 47 k
6
C261 1 C264 22
C262 1 C263
0.001
R180 1 k
IC10 AK2346
1
R121 AGNDIN TEST
2
12 k
AGND RXIN
3
TXIN RXINO
4
TXINO RXLPFO
5
LIMLV RXAF
6
EXTLMIN RXAFIN
7
MOD EXPOUT
NOTES : 8
VSS VDD
9
TCLK XIN
10
R122
TDATA XOUT
Voltage line
390 k 11
DI/O DIR
12
RDF/FC SCLK
Common line
TX line
3.6864MHz
RX line
2.0Vp–p
A: The scrambler IC is installed type. B: The scrambler IC is not installed type.
C: High-band. D: Low-band. E: Intrinsically safe version.
VCC
T5V
3.9
2.0
0
C98
C370
10 P 0.001
C102
5 P C100
D14
10 P
MA2S077
Q10
2SC5107 O
TX:+2.2dBm Q8
RD01MUS1
RX:+4.2dBm
C92 12 P
0
C302
C93
2.1 Q5
10 P
8 P C
Q9 2SC3356 R25
10 P D
2SC5107 O
C303
0.001
C35 0.1
Q1
AGC
2SK1829
R18
10 k
R206
L38
470 k R59 4.7 k
27 nH 0
0
1.6
4.8
RF AMP
C40 0.3 P 0
Q2
R12
3SK293 1.8
10
C30 C23 2 P
7 P
0
R23 0.4
220 R22 10 k
R13 100 k
R120
IC12
470
BU4094BCFV
EXSM 1 16
STR V+
SO 2 15 EXOE
D OE
SCK 3 14 TMUT
Q5
CLK
R5C 4 13
Q1 Q6
T5C 5 12 MUT1
Q2 Q7
6 11
MUT2
Q3 Q8
S5C 7 10
Q4 Q`S
8 9
QS
GND
+5V
R141 C271
33 k 0.1
IC13
BU4066BCFV
1 14
I/01 VDD
2 13
0/I1 CONT1
3 12
0/I2 CONT4
4 11
I/02 I/04
R124
5 10
CONT2 0/I4
33 k
6 9
CONT3 0/I3
7 8
VSS I/03
24 R123
23
82 k
22
21
20
19
18
17
16
15
R135
C256 R127 C257
14
1 M 0.0022 33 k 0.1
13
X4
CR–765
R126 R128 C258
1 M 33 k 0.1
LPF
1.7
0
L3
C10 L44
D2
0.001 4.1 nH 0.4–0.9–2TL
1SV307
L4 C7
0.4–0.9–2TL 0.001
Q7
RD07MVS1
C86
22 P C
27 P D
R2
1 k
L5
C20 C19
LQW1608A22NG00
7 P 0.001
R11
100 k
C2
C4 2 P D
0.75 C
2.5 P
C6 L45
L2 14 nH L1 17.5 nH 17.5 nH
0.001
2.3
1.4
D39
0 R338
2.2
RB706F–40 1 k
D38 MA2S111
C79 0.22
R8 470 k
R5
APC
5 10 k
0
4
4.9
R6 100 k
1
R9 270
IC2
2
TC75S51F
R195
10 k A only
Q27
DTA144EU
A only
5.0 Scrambler ON
C274
C276
0 Scrambler OFF
0.1 A only 1 A only
C275
C277 1 A only
1 A only
IC15
TC3W03FU
A only
15 22 8 1
RXOUT TXIN
VCC CE
14 23 7 2
IC LFO/P B XT
13 24 6 3
VSS VDD A XT R144 1 M A only
IC14
12 1 5 4
AT X/CLK
Q GND
2
11 FX214LG
LD/LTH X
10 3
SCIN A only SDIN
R145
X3
10A only
CR–746
A only
4.00MHz
5.0Vp–p
C273
0.1 A only
J1
(CHASSIS)