Icom IC-7400, Service Manual, Page: 89 / 92

12 - 6
12-6 CTRL AND TUNER UNITS
C3 20p
C2 47p
C1 2p
R3 10k
D1
HSM88AS
R1 18
D2
HSM88AS
L1 LR-364
C12 3p
C14 33p
C13 33p
R4
10k
C7
C6
0.001
0.001
R5
220k
R6
220k
R100 56k
R101 56k
R7 220k
R8 220k
C9 0.0047
IC1a
NJM4558M
C8 0.0047
C69 10
R10
820k
IC1b
NJM4558M
C70 10 C99 10p
R13
1k
CP1
R14
1k
C11 0.0047
D3
1SS319
C10 0.0047
+
-
+
-
5
6
7
3
2
1
8
4
C5
56p
C4 2p
C16 0.0047
2 1
3 4
D4
DWA010
R15 100
R16 33
C15 33p
C17
82p
R17
100
R140
47
R141 1k
11 10
IC14e
TC74AC04F
C20 0.0047 C21 0.0047
R136 10k
R137
47
R138 1k
5 6
IC14c
TC74AC04F
IC2b
TC74ACT32F
IC2d
TC74ACT32F
IC2a
TC74ACT32F
5
4
6
12
13
11
2
1
3
14
7
10
9
8
R142
47
R144
47
IC2c
TC74ACT32F
K
CK
J Q
Q
7
9
12
13
11
14
10
CLR
PR
IC3b
TC74AC112F
5
6
Q
Q J
K
CK
1
2
3
16
4
VCC
PR
IC3a
TC74AC112F
8
15
R26
47 C24
220p
R27
47 C25
220p
D6
HSM88AS
R28
3.3k
D7
HSM88AS
R29 2.2k
C26 0.0047
R146
47
R147 1k
R34
5.6k
R33
5.6k
R35
82k
+
-
6
5
7
R36 1.5M
IC4b
NJM4558M
R32
100k
R31 2.2k
C27 0.0047
C30 220p
R50
6.8k
R51 5.6k
R52
100k
+
-
2
3
1
R53
1.5M
IC4a
NJM4558M
R49
100k
C39 0.0047
R48 10k
C43 220p
D5
HSM88ASR
R41 82
C33 68p C34 68p
C32
2p
D8
HSM88AS
D9
HSM88AS
C100 68p
L9 2.2mH
Q5
2SK515
R43 10k
R44 1M
C37 0.0047 C36 0.001
C38 0.0047
R45 10k
R46 4.7k
R47 1k
R42 10k
C35 0.0047
IC14a
TC74AC04F
IC14b
TC74AC04F
IC14f
TC74AC04F
IC14d
TC74AC04F
1
C40 0.0047
C31 470p
C44 470p
R37
10k
R54
10k
1 2
3
4
D10
DWA010
R55
10k
R38
10k
R57 100k
C209 0.01
R56 100k
R40 100k
C210 0.01
R39 100k
RL4
AE5343
C58 0.0047
C114 0.0047
Q12
DTC114EU
D16
DA221
L28 L35
LA-248
C116 12p
C117 C118
LA-247
L27
LA-254
C105 33p C64 82p
C66 82p
56p 0.1
C65 47p C67 15p
C63 18p
C109 0.1
D22
D24 MA77
MMBV3700LT1
D21
MMBV3700LT1
R152
R159 4.7k
4.7k
R150 390
R156 1.5k
R151 1.5k
R160 1k
R160 47
R154
2.2k
R155 390
R153
4.7k
Q25
2SC4213
D17
DA221
R58 2P-50-W1L301
RL1
FTR-F1
C59 0.0047
RL2
FTR-F1
C60 0.0047
D18
DA221
C112 0.0047
Q16
DTC114EU
C113 0.0047
Q14
DTC114EU
C55 0.001
D15
HSM88AS
R88 68k
C57 0.0047
R87 68k
C56 0.0047
2
3
4
8
1
-
+
IC9a
NJM2903M
R90 220k
R89 2.2M
R93 10k
R92
1k
5
6
7
+
-
IC9b
NJM2903M
RL3
FTR-F1
L25 100
µ
H
P00/AD0
P37/RD
P01/AD1 P02/AD2 P03/AD3 P04/AD4 P05/AD5 P06/AD6 P07/AD7 P10/AD8 P11/AD9
P12/AD10 P13/AD11 P14/AD12 P15/AD13 P16/AD14 P17/AD15
P36/WR
P35/SYNC
P34
P33/RESET OUT
P32/ONW
P31/DA2
P30/DA1
VCC
VREF
AV88
P67/AN7
P66/AN6
P65/AN5
P64/AN4
P63/AN3
P41/INT0
P40/INT4
P42/INT1
CNV66
RESET
XIN
XOUT
VSS
P26/DB6
P27/DB7
P25/DB5
P23/DB3
P24/DB4
P22/DB2
P21/DB1
P20/DB0
P43/INT2 P44/RXD P45/TXD P46/SCLK1 P50/SIN2 P47/SRDY1 P51/SOUT2 P52/SCLK2 P54/CNTR0 P53/SRDY2 P55/CNTR1 P57/INT3 P56/PWM P61/AN1 P60/AN0 P62/AN2
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
A0
A1
A2
VSS
VCC
TEST
SCL
SDA
R59 10k R60 10k
C46 0.1
L10 100
µ
H
IC6
X24C04S8-2.7
L11 100
µ
H
C45 0.1
P00
P01
AN1 AN0 AN2
I
G
O
C110 0.1
C98 100
IC13
TA7805F
C71 0.1
D11
RD5.1M
R65
1k
D12 RD5.6M
C49 0.0047
R66 56k
R61 100k
R102
12k
R103 100k
C72 470 R69 100
CIKY
CIST
GND
CANT
GND
CDRS
GND
CREF
CFOR
GND
GND
C-8V
GND
C5V
C5V
SETI
GND
CT8V
GND
C14V
C14V
C14V
T14V
PW
PX
PY
PZ
AW
T14V
AX
AY
AZ
GND
GND
35M
7M
10M
14M
18M
24M
VHF
GND
GND
14V
14V
CO3
CO2
CO1
NVHF
CI3
CI2
CI1
GND
GND
C85 0.0047 C86 0.0047 C84 0.0047 C83 0.0047 C82 0.0047 C81 0.0047 C80 0.0047 C73 0.0047 C74 0.0047 C75 0.0047 C76 0.0047 C77 0.0047 C78 0.0047 C79 0.0047
7M
4M
10M
14M
18M
24M
VHF
CO3
CO2
CO1
NVHF
CI3
CI2
CI1
X1
CR-569
C47 20p C48 20p
Q24
DTA114EU
Q211
DTC114EU
Q212
DTC114EU
P02
Q213
Q215
Q217
DTC114EU
P03
Q214
DTC114EU
P04
DTC114EU
P05
Q216
DTC114EU
P07
Q218
DTC114EU
P06
DTC114EU
Q23
DTC114EU
CP2
R149 100k
C53 0.0047
R76 10k
R106 1k
C52 0.0047
R105
1k
C51 0.001 R107 100k
R71 1k
W4
W3
R98 1k
R99 1k
L31
HF50ACC322513-B
L32 HF50ACC322513-B
J1
from
PA unit
J502
L4 LR-364
L8 LR-364
C107 4p
TRC
TUOT
TUIN
THRU
J2
HRX
to
CHASSIS
AN3
AN2
AN3
P00 P01 P02 P03 P04 P05 P06 P07 CI1 CI2 CI3 CO1 CO2 CO3
7M
4M
10M
14M
18M
24M
VHF
NVHF
THRU
J7
J8
J11
J10
J14
SSP
PAFE
MP9
J3
J4
AN1
AN0
P2
to
RF unit
J1
PW
T14V
PX
PY
PZ
AW
T14V
AX
AY
AZ
MF1
MP28GA
MF2
MP28GA
J5
GND
GND
35M
7M
10M
14M
18M
24M
VHF
GND
GND
14V
14V
CO3
CO2
CO1
NVHF
CI3
CI2
CI1
GND
GND
J3
P3
J4
P4
RL10
NY-12W-K-IE
RL11
NY-12W-K-IE
C5 0.0047 D14
DA221
C8 0.0047
Q14
DTC114EU
C48 0.0047
C6 0.0047
D15
DA221
C25 0.0047
Q15
L13
L13,L14
BM27-400-6A L15,L16
BM27-400-6A L17,L18
BM27-400-6A
L19,L20
BM27-400-6A
DTC114EU
C52
L14
L15
L16
L17
L18
0.0047
RL12
NY-12W-K-IE
RL13
NY-12W-K-IE
C22 0.0047 D12
DA221
C7 0.0047
Q12
DTC114EU
C47 0.0047
C4 0.0047
D13
DA221
C24 0.0047
Q13
DTC114EU
C51 0.0047
RL14
NY-12W-K-IE
RL15
NY-12W-K-IE
C19 0.0047 D9
DA221
C3 0.0047
Q9
DTC114EU
C49 0.0047
C20 0.0047
D10
DA221
C23 0.0047
Q10
DTC114EU
C50 0.0047
C43 100p C42 100p
C41 100p
C40 100p
C38 150p C36 82p
C39 150p
C37 100p
CI3
CO3 CO2
CI2
CO1
CI1
RL1
NY-12W-K-IE
C18 0.0047
D8
DA221
C1 0.0047
Q8
DTC114EU
C46 0.0047
NVHF
C34 39p
RL2
NY-12W-K-IE
C21 0.0047
D11
DA221
C26 0.0047
Q11
DTC114EU
C53 0.0047
L1
HF50ACC322513-B
C2 0.0047
RL3
NY-12W-K-IE
C17 0.0047
D7
DA221
C27 0.0047
Q7
DTC114EU
C55 0.0047
VHF
RL4
VE-12HM-K-IE
C16 0.0047
D6
DA221
C28 0.0047
Q6
DTC114EU
C56 0.0047
RL5
VE-12HM-K
C15 0.0047
D5
DA221
C29 0.0047
Q5
DTC114EU
C57 0.0047
18M
RL6
VE-12HM-K
C14 0.0047
D4
DA221
C30 0.0047
Q4
DTC114EU
C58 0.0047
14M
RL7
VE-12HM-K
C13 0.0047
D3
DA221
C31 0.0047
Q3
DTC114EU
C59 0.0047
10M
RL8
VE-12HM-K
C12 0.0047
D2
DA221
C32 0.0047
Q2
DTC114EU
C60 0.0047
7M
RL9
VE-12HM-K
C11 0.0047
D1
DA221
C33 0.0047
Q1
DTC114EU
C61 0.0047
35M
L4
LA-554
L3
LA-555
L6
LA-490 L7
LA-489
L5 LA-489
L9
LA-536
L8 LA-490
L11 LA-536
L12 LA-536
C44 150p
C45 150p
NVHF
C35
39p
CTRL UNIT
R9 1M
1 2
3
4
R143 1k
R145 1k
C101 0.0047
C102 10
C50 47
7
2
3 4
9 8 13 12
8
4
R30
220
CLR
GND
C22 47
C23 0.0047
L5
10
µ
H
5VA
5VA
REF
FOR
L2
10
µ
H
R121 1k
R120 1k
R119 1k
R118 1k
R117 1k
R116 1k
R115 1k
R108 1k
R109 1k
R110 1k
R111 1k
R112 1k
R113 1k
R114 1k
TUIN
TUOT
14V
D211 1SS319
R211 330 R212 330
D213 1SS319
R213 330 R214 330
D215 1SS319
R215 330 R216 330
D217 1SS319
R217 330 R218 330
1
2
3
4
5
6
7
8
TRC
(6.144MHz)
C54 0.0047
IC5
M38022M2-138FP
5VA
L3 100
µ
H
D13
MA114
R67 1k
4
2
5
3
IC10
TC4S69F
REF
FOR
-8V
5VA
14V
L29
HF50ACC322513-B
to
MAIN
unit
J140
R84
10k
R86
220k
R83 18
L22
LR-364
Q21
DTC114EU
C111 0.0047
D20
DA221
C62
0.0047
TUNER UNIT
TUIN
TUOT
24M
P3
J13
P3
SP1
CHASSIS
C203
0.0047
C212
12p
C213
22p
R158
10K
C214
0.001
C211
1p
R157
10K
D23
HSM88AS
R62
100K
R63
100K
CP7
SETI
R2 18
R139
10k
C216 0.1
CTIN
ANT1
ANT2
W11
W12
R64 100k
14
C215 270p
C90 1 C91 1 C92 1 C93 1
C94 1 C95 1 C96 1 C97 1
L19
L20
L13
100
µ
H
EP2
CTRL UNIT
TUNER UNIT
TX: 4.4V
RX: 0V
TX: 50mV
RX: 0V
TX: 0V
RX: 13.8V
TX: 0V
RX: 13.8V
TUNER on: 13.8V
off: 0.28V
TX: 13.8V
RX: 0.28V
TX: 0.14V
RX: 0.13V
TX: 2V
RX: 2.15V
TX: 2.6V
RX: 2.52V
TX: 0.156V
RX: 0.164V
TX: 54mV
RX: 0V
1.25mV
0.14V
4.92V
4.7V
TX: 4.98V
RX: 0V
0.004V
13.6V
13.6V
13.6V
13.6V
13.6V
RX: 13.4V
13.6V
13.6V
13.6V
4.44V
-7.6V
4.82V
13.4V
0.162V
38mV
13.2V
TX: 13.8V
RX: 0V
TX: 1.5mV
RX: 0V
Band
1.9
3.5
7
10
14
18
21
24
28
50
Frequency(MHz)
0.03000
∼
1.99999
2.00000
∼
5.99999
6.00000
∼
7.99999
8.00000
∼
10.99999
11.00000
∼
14.99999
15.00000
∼
19.99999
20.00000
∼
21.99999
22.00000
∼
25.99999
26.00000
∼
33.09999
45.00000
∼
60.00000
Range
Digital tester
Voltage at RX(No designation)
MEASUREMENT CONDITIONS
frequency: 14.1MHz USB
RX(RF: no input)
TX(AF: no input)
200mV
2V
20V
Input resister
100M
Ω
11M
Ω
10M
Ω
Terminal
Band
35M L
L
L
L
L
L
L
H
1.9
7M
10M
14M
18M
24M
VHF
NVHF
Terminal Voltage(H=4.4V L=0.0V)
H
L
L
L
L
L
L
H
3.5
H
H
L
L
L
L
L
H
7
H
H
H
L
L
L
L
H
10
H
H
H
H
L
L
L
H
14
H
H
H
H
H
L
L
H
18
H
H
H
H
H
L
L
H
21
H
H
H
H
H
H
L
H
24
H
H
H
H
H
H
L
H
28
H
H
H
H
H
H
H
L
50
Oscilloscope(20MHz,1M
Ω)
Range
Digital tester
MEASUREMENT CONDITIONS
frequency: 14.1MHz USB
RX(RF: no input)
200mV
2V
20V
Input resister
100M
Ω
11M
Ω
10M
Ω
TUNER ON
3.5V
0.16
µ
sec
4.4V
0.16
µ
sec