![background image](http://html.mh-extra.com/html/icom/ic-7700/ic-7700_service-manual_612323091.webp)
J201
40FLT-SM2-T B
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
1K
R297
1K
R237
DTC114EU
Q502
47K
R501
47K
R503
1K
R353
1K
R235
0.
1
C263
D TC114EU
Q205
47K
R255
12P
C204
0.12
C201
10 EEE-S
C214
0.
1
C602
1K
R263
0.
1
C652
1K
R220
D 10F-#A814AY
L211
1K
R298
D TC114EU
Q206
RB706F
D12
10 EEE-S
C601
R252
1K
R250
3319-T088
T201
1
2
3
4
5
6 7
11
8
12
0.1
C209
2SC3647
Q201
R304
R303
1K
R239
0.
1
C262
0.
1
C255
2SC4081
Q20
3
1K
R248
10
C228
1K
R275
0.
1
C247
1K
R221
1K
R233
15K
R327
1M
R203
0.
1
C232
1K
R230
56K
R651
BU4051BCFV
IC4
1
X4
2
X6
3
X
4
X7
5
X5
6
INH
7
VEE
8
VSS
9
C
10
B
11
A
12
X3
13
X0
14
X1
15
X2
16
VDD
1K
R227
10K X4
R302
47K
R342
1K
R232
22
R340
100K
R242
1K
R265
2SC3647
Q 202
1K
R249
2SB1201
Q209
1K
R214
0.027
C651
10U
L601
22
0
R326
47K
R502
MA8047
D9
15K
R213
M
A2S111
D601
12P
C203
0.
1
C225
D TC144EU
Q200
0.
1
C245
47K
R603
33K
R652
1K
R228
10U
L204
10 EEE-S
C212
MA2S111
D602
1K
R504
0.001
C219
0.1
C224
1K
R247
1K
R270
52808-1071
J5
1
2
3
4
5
6
7
8
9
10
BU4051BCFV
IC1
1
X4
2
X6
3
X
4
X7
5
X5
6
INH
7
VEE
8
VSS
9
C
10
B
11
A
12
X3
13
X0
14
X1
15
X2
16
VDD
R305
22
R339
0.1
C206
1.8K
R202
10K
R329
B04B-EH-S
J205
1
2
3
4
1K
R352
D 10F-#A814AY
L210
1K
R222
BU2099FV
IC7
1
VSS
2
NC
3
DATA
4
CLOCK
5
LCK
6
Q0
7
Q1
8
Q2
9
Q3
10
Q4
11
Q5
12
Q6
13
Q7
14
Q8
15
Q9
16
Q10
17
Q11
18
SO
19
OE
20
VDD
47 EEE-S
C218
1K
R240
1K
R226
1K
R216
0.
1
C264
1K
R224
0.
1
C220
47K
R364
1K
R300
1K
R260
1K
R218
1K
R296
2SB1201
Q204
0.
1
C229
D TC114EU
Q505
1K
R274
15P
C202
0.1
C205
0.
1
C217
D TC114EU
Q501
M
A2S111
D603
0.
1
C227
J202
40FLT-SM2-TB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
1K
R219
0.1
C210
D TC114EU
Q 503
9.8304MHZ
X1
D TC114EU
Q212
1K
R301
100K
R254
82K
R258
1K
R354
2SA1162
Q60
1
1K
R310
1K
R311
47K
R256
68K
R328
1K
R266
220
R208
52808-1071
J7
1
2
3
4
5
6
7
8
9
10
BU4051BCFV
IC3
1
X4
2
X6
3
X
4
X7
5
X5
6
INH
7
VEE
8
VSS
9
C
10
B
11
A
12
X3
13
X0
14
X1
15
X2
16
VDD
100K
R241
0.
1
C244
DTA114EU
Q504
0.1
C207
1K
R351
1K
R267
1K
R229
1K
R234
1K
R299
0.
1
C241
0.
1
C216
0.
1
C261
0.
1
C242
0.
1
C265
1K
R238
1K
R236
82K
R337
1K
R264
0
R209
1K
R262
BU4051BCFV
IC5
1
X4
2
X6
3
X
4
X7
5
X5
6
INH
7
VEE
8
VSS
9
C
10
B
11
A
12
X3
13
X0
14
X1
15
X2
16
VDD
2.2K
R365
TC7SET08FU
IC201
1
2
3
4
5
RB706F
D11
1K
R272
82K
R257
47K
R333
1K
R261
0.
1
C248
4.7K
R602
2SC4081
Q210
47 EEE-S
C213
1K
R215
0
R210
10U
L201
1K
R295
0.
1
C243
1K
R246
10K
R604
1K
R268
0.0047
C230
68K
R212
47K
R343
0.
1
C260
0.
1
C258
BH-800-4GG
J601
47K
R334
1K
R217
TC7SET08FU
IC202
1
2
3
4
5
82K
R338
1.8K
R201
0.1
C211
0.
1
C257
0.
1
C215
0.
1
C259
1K
R273
MA8033
D1
0
0.
1
C254
1K
R223
0.
1
C231
0.
1
C246
1K
R355
0.
1
C266
1K
R366
1K X3
R253
1K
R225
52808-1871
J4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
0
R601
1K
R200
0.
1
C221
100
R251
0
R369
4.7K
R653
52808-2071
J602
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
MPZ1608S221A
EP203
MPZ1608S221A
EP205
MPZ1608S221A
EP207
MPZ1608S221A
EP208
MPZ1608S221A
EP209
IC651
R3112N281A
1
OUT
2
VDD
3
VSS
4
NC
5
CD
RX-4581
IC601
1
GND
2
CE1
3
CE0
4
DI
5
DO
6
CLK
7
/TIR Q
8
/AIR Q
9
FOE
10
FOUT
11
VDD
14
NC
15
NC
16
NC
17
NC
18
NC
19
NC
20
NC
21
NC
22
NC
SM02
J301
1
2
3
4
1K
R321
1K
R320
1K
R322
DAP222
D8
DAN222
D7
0.
1
C222
0.
1
C223
6.8K
R654
6.8K
R655
6.8K
R656
6.8K
R657
CF20
CP1
52808-1671
J604
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
52808-1071
J603
1
2
3
4
5
6
7
8
9
10
10K
R323
1K
R312
1K
R363
1K
R362
1K
R313
52808-1071
J8
1
2
3
4
5
6
7
8
9
10
1K
R361
1K
R357
1K
R356
1K
R360
D TA114EU
Q211
1K
R359
1K
R358
J1
40FLT-SM2-T B
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
0.
1
C226
1K
R276
1K
R278
1K
R279
1K
R281
1K
R280
1K
R282
47K
R506
1K
R259
B2B-PH-SM4-T B
J605
1
2
3
4
B3B-PH-SM4-T B
J606
1
2
3
4
5
52808-2071
J203
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
M30620FCMGP
IC6
1
P94/DA1/TB4IN
2
P93/DA0/TB3IN
3
P92/TB2IN/SOUT3
4
P91/TB1IN/SIN 3
5
P90/TB0IN/CLK3
6
BYTE
7
CNVSS
8
P87/XCIN
9
P86/XCOUT
10
RESET
11
XOUT
12
VSS
13
XIN
14
VCC
15
P85/NMI
16
P84/INT2
17
P83/INT1
18
P82/INT0
19
P81/TA4IN/U
20
P80/TA4OUT/U
21
P77/TA3IN
22
P76/TA3OUT
23
P75/TA2IN/W
24
P74/TA2OUT/W
25
P73/CTS2/RTS2
26
P72/clk2/TA1OUT
27
P71/RXD2/SC
L
28
P70/TXD2/SDA
29
P67/TXD1
30
P66/RXD1
31
P65/CLK1
32
P64/CTS1/RTS1
33
P63/TXD0
34
P62/RXD0
35
P61/CLK0
36
P60/CTS0/RTS0
37
P57/RDY/CLKOUT
38
P56/ALE
39
P55/HOLD
40
P54/HLDA
41
P53/BCLK
42
P52/RD
43
P51/WRH/BHE
44
P50/WRL/WR
45
P47/CS3
46
P46/CS2
47
P45/CS1
48
P44/CS0
49
P43/A19
50
P42/A18
51
P41/A17
52
P40/A16
53
P37/A15
54
P36/A14
55
P35/A13
56
P34/A12
57
P33/A11
58
P32/A10
59
P31/A9
60
VCC
61
P
30/A8(/-/D7)
62
VSS
63
P27/A7(/D7/D6)
64
P26/A6(/D6/D5)
65
P25/A5(/D/D4)
66
P24/A4(/D4/D3)
67
P23/A3(/D3/D2)
68
P22/A2(/D2/D1)
69
P21/A1(/D1/D0)
70
P 20/A0(/D0/-)
71
P17/D15/INT5
72
P16/D14/INT4
73
P15/D13/INT3
74
P14/D12
75
P13/D11
76
P12/D10
77
P11/D
9
78
P10/D
8
79
P07/D
7
80
P06/D
6
81
P05/D
5
82
P04/D
4
83
P03/D
3
84
P02/D
2
85
P01/D
1
86
P00/D
0
87
P107/AN7/KI3
88
P106/AN6/KI2
89
P105/AN5/KI1
90
P104/AN4/KI0
91
P
103/AN3
92
P
102/AN2
93
P
101/AN1
94
AVSS
95
P
100/AN0
96
VREF
97
AVCC
98
P97/ADTRG/SIN4
99
P96/ANEX1/SOUT4
100
P95/ANEX0/CLK4
120
R505
3.3K
R330
AVXL
VOXL
DRVL
CMPL
CNTL
MONL
BRIL
ASL2
ASL1
ASL0
ASL1
ASL0
ASL2
ASL1
ASL2
ASL0
KI8
KI10
KI11
KI9
AS2
AS3
LVDD4
LVDD3
LVDD2
LVDD1
LCLK
R0
R1
R2
R3
R4
R5
G0
G1
G2
G3
G4
G5
B0
B1
B2
B3
B4
B5
HS
VS
DE
UD/RL
BRIV
BRIV
CFLV
ASL2
ASL1
ASL0
AS0
AS0
AS1
AS2
AS3
VOXD
TN1D
TN2D
USBD
NBD
NRD
LST
RTCCK
LDAT
LDAT
RTCCK
F1K
F2K
F3K
F4K
F5K
F6K
F7K
SSBK
CWK
F1K
F2K
F3K
F4K
F5K
F6K
F7K
SSBK
CWK
RTYK
AMK
EXTK
RECK
PLYK
ATK
MONL
_
CMPL_
DRVL_
LTXD_
LTXD_
LRXD_
LRXD_
DBP1
SLOS
DRXD
DTXD
CNVSS
KI6
KI5
KI4
RTCCE
LST
KI3
PB2B
PB2A
PB1B
PB1A
PB1A
PB1B
PB2A
PB2B
TSK
TSK
CNTV_
CNTV_
CNTV__
BRIV_
PHNI
RSB
RSA
MS B
RTCIRQ
SQSS
MS B
MS A
TDTS
SO
DOT
K
DSHK
RTCDT
RTCCE
RTCCK
RTCDT
RTCIRQ
DBP1
SLOS
DRXD
TDTS
P2ST
DTXD
LG_RES
LG_RES
LG
_
P
W
R
LG_PWR
PWRK
PWRK
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
KYSL
ASL0
MOND
MOND
CFLV
LEDV
BKLS
VOXL
_
MONL _
CMPL_
DRVL_
RFL
PWR L
KI1
RECK
AMK
EXTK
RTYK
PLYK
MPW K
MWK
VMK
ABK
UPK
XFCK
DWK
EQRK
MPRK
NRL
NB L
AFL
DGSL
AS1
AVXL_
BRIT_
KI0
KI2
ASL2
PITL
NTCL
PWRD
RESET
CNTL_
KI7
P2ST
STBD
DELL
M IGL
ASL1
BRIV
CNVSS
ATK
TDTS
TDTS
CNTV
CNTV_
BRIT_
CNTL_
AVXL_
VOXL_
SQSS
RESE
T
RESET
RESE T
RESET
BKID
DSHK_
PHNI _
DOTK_
PHNI
MUDL _
DOT K
DSHK
TRAK_
PWRK_
MOND_
BKID
KI10
KI11
KI8
KI7
KI9
PWRD
AGD
VOXD
TN2D
TN1D
TRAK
KI10_
KI10_
KI9_
KI8_
KI7_
SQLS
USBD
NBD
AGD
NRD
M8V
SQLL_
AGL _
PWRL_
MIGL_
M IGL
PWRL
AGL
SQLL
DELL
RFL
AFL
KYSL
KYSL_
DELL_
RFL_
AFL_
STBD
SQLL
AGL
NBL_
NB L
NRL_
NRL
MSND
MSND
8V
DGSL
UPK
DWK
VMK
MPW K
MWK
MPRK
XFCK
ABK
EQRK
LDPS
LDPS
LDPS
LDPS
KI4
KI5
KI0
KI1
KI2
KI3
NTCL
PITL
TDTS
RTCCK
SO
LST
RSA
RSB
KI6
MUDL
TRAK
MSA
TMD_
LEDV
BKLS
GND
GND
3R3V
3R3V
3R3V
3R3V
3R3V
3R3V
5V
5V
5V
C15V
C15V
C 15V
C15V
C15V
To MAIN DIAL
VR-C BOARD
SW-B
BOARD
SW-A
BOARD
To LCD
To LOGIC UNIT J806
To LOGIC UNIT J805
G1
GND
LCLK
GND
GND
G5
GND
R0
LVDD1
GND
GND
B2
GND
R5
R2
LVDD2
B4
R3
VS
B0
DE
B1
GND
B5
LVDD4
HS
UD/RL
B3
G0
R4
R1
GND
GND
GND
G4
LVDD3
G3
G2
NC
NC
GND
CFLH
MSCK
DATK
LRXD
LTXD
MSCK
DATK
LG_PWR
LG_RES
TIMD
VR-B BOARD
LCK
LDAT
LO E
To TENKEY BOARD J1
To SPEAKER
(AF OUT)
0.0047
C2
0.0047
C1
0.0047
C4
0.0047
C3
4.7K
R3
4.7K
R4
4.7K
R5
4.7K
R6
RV-314
R1
RV-314
R2
EP119
EP115
MMZ1608Y102BT X5
EP107
EP112
0
R108
EP116
0
R107
EP121
0
R104
EP117
MMZ1608Y102BT X3
EP122
0
R102
MMZ1608Y102BT X6
EP114
0
R105
0
R106
52808-1071
J103
1
2
3
4
5
6
7
8
9
10
EP113
EP120
EP111
EP108
EP118
0
R101
0
R103
52808-1671
J106
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
52793-1070
J104
1
2
3
4
5
6
7
8
9
10
11
12
S6B-PH-SM4-TB
J107
1
2
3
4
5
6
7
8
PWR
L
MI
G
L
SQL
3R3V
M8
V
PHO
MUD
SQLS
MSND
AFE
DASH
DOT
PHNI
PHNI
DASH
DOT
MSND
SQLS
MUD
M8
V
AGL
AFO
MIC
BOARD
JACK BOARD
To MAIN UNIT J841
C2
0.0047 X4
C1
C4
C3
52808-1071
J1
1
2
3
4
5
6
7
8
9
10
4.7K
R4
4.7K
R5
4.7K
R6
4.7K
R7
4.7K
R9
4.7K
R8
RV-314
R3
0.0047
C5
0.0047
C6
RV-314
R1
RV-314
R2
KYS L
DELL
NBL
NBL
NRL
NRL
GND
GND
RFL
AFL
3R3V
R1
R2
R3
R4
R5
R6
RK097111T005A X7
R7
0.0047
C11
0.0047
C12
0.0047
C13
0.0047
C14
0.0047
C15
0.0047
C16
0.0047
C17
52808-1071
J1
1
2
3
4
5
6
7
8
9
10
4.7K
R13
4.7K
R14
4.7K
R15
4.7K
R16
4.7K
R17
4.7K
R11
4.7K
R12
3R3V
3R3V
BRIL
CNTL
AVXL
VOXL
DRVL
CMPL
MONL
GND
GND
680
R3
2.2K
R13
4.7K
R14
2.2K
R22
4.7K
R23
15K
R24
2.2K
R25
4.7K
R26
0.
1
C4
0.
1
C5
0.
1
C9
15K
R29
SML-512MW
DS17
SML-512DW
DS5
SML-512MW
DS6
SML-512MW
DS
7
SML-512MW
DS12
SML-512UW
DS15
SML-512MW
DS16
470
R2
470
R12
470
R30
52808-2071
J1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
SML-512MW
DS18
470
R31
0.
1
C2
LS8J2M
S1
LS8J2M
S2
LS8J2M
S3
LS8J2M
S4
LS8J2M
S11
LS8J2M
S21
LS8J2M
S22
LS8J2M
S14
LS8J2M
S15
LS8J2M
S16
LS8J2M
S17
LS8J2M
S18
LS8J2M
S19
LS8J2M
S20
15K
R27
390
R4
TN1D
STBD
P
WRD
VOXD
TN1D
TN2D
TIMD
TN2D
TRAK
STBD
BKID
TIMD
KI8
KI7
PWRK
MOND
VOXD
KI
9
PWRD
LDPS
MOND
KI
7
KI
8
KI
9
BKID
STBY LED
POWER ON LED
TUNING LED
TUNER LED
TIMER LED
DISPLAY BOARD
52808-1871
J1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
F2K
F3K
F4K
F5K
F6K
F7K
ATK
PLYK
RECK
F1K
GND
SSBK
CWK
RTYK
AMK
EXTK
MSCK
DATK
S1
LS8J2M
S2
LS8J2M
S3
LS8J2M
S4
LS8J2M
S5
LS8J2M
S6
LS8J2M
S7
LS8J2M
F1K
F2K
F3K
F4K
F5K
F6K
F7K
S8
LS8J2M
S9
LS8J2M
S10
LS8J2M
S11
LS8J2M
S12
LS8J2M
S13
LS8J2M
S14
LS8J2M
SSBK
CWK
RTYK
AMK
EXTK
DATK
MSCK
S15
LS8J2M
S16
LS8J2M
S17
LS8J2M
RECK
PLYK
ATK
0.0047
C1
C3
100P X4
C4
C5
C6
C2
0.0047 X2
C7
J2
1
2
3
4
5
6
7
8
9
10
100U X3
L1
L2
L3
MMZ1608Y102BT X10
EP11
EP2
EP3
EP4
EP5
EP6
EP7
EP8
EP9
EP10
47P
C8
MPZ1608S221A
EP12
1
2
3
45
7
8
1
2
3
4
5
6
7
8
MSND
SQLS
MUD
MICI
M8
V
M
ICE
GND
AF
O
1
2
3
45
6
7
8
FM214-8SS
J1
C101
C102
MMZ1608Y102BT
EP101
0.0047 X2
0.0047 X2
C2
MMZ1608Y102BT
EP102
C1
LGR4619-7000
J102
J2
S-G4617#01F
100U X3
L6
L4
L5
L101
L102
100U X3
L103
180
R1
180
R2
M
PZ1608S221A X3
EP1
EP2
EP3
52793-1070
J1
1
2
3
4
5
6
7
8
9
10
11
12
DASH
DASH
DOT
DOT
PHE
PHE
PH
I
GND
GND
GND
PHO
VR-A
BOARD
USB
BOARD
SML-512MW
DS10
SML-512MW
DS9
SML-512MW
DS
8
SML-512UW
DS11
0.
1
C1
4.7K
R6
2.2K
R7
15K
R5
52808-1071
J106
1
2
3
4
5
6
7
8
9
10
LS8J2M
S1
LS8J2M
S2
LS8J2M
S3
330
R1
330
R2
330
R3
1.2K
R4
NRD
NBD
KI10
NBD
NRD
AGD
USBD
KI10
AGD
USBD
LDPS
To LCD
To MAIN
UNIT J841
[POWER]
[TRANSMIT]
[TIMER]
[BK-IN]
[A]
[B]
[C]
[D]
[E]
[F]
[TUNER]
[G]
[VOX]
[MIC/RF PWR]
[AGC/SQL]
[NR/NB]
[KEY SPEED/
DELAY]
[AF/RF]
[NB]
[NR]
[AGC VR]
[MONI GAIN]
[COMP]
[DRIVE]
[VOX GAIN]
[ANTI VOX]
[CONTRAST]
[BRIGHT]
[F-1]
[F-2]
[F-3]
[F-4]
[F-5]
[F-6]
[F-7]
[PHONE-J] [ELEC-KEY-J]
[EXIT/SET]
[SSB]
[CW]
[RTTY/PSK]
[AM/FM]
[DATA]
[M.SCOPE]
[REC]
[PLAY]
[AUTO TUNE]
[MONITOR]
[MIC]
10 - 1
SECTION 10
SCHEMATIC DIAGRAM
• FRONT UNIT