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11 - 9
11-17 MAIN UNIT
VOLTAGE LINE
Explanatory notes
TX LINE
RX LINE
6
1
4
5
3
7
2
8
J1
SQLS
RTTY
13.8V
ALC
SEND
MOD
AF
GND
BUS LINE1
J9
MAIN UNIT (1)
D3
DSM3MA4
D4
DSM3MA4
L56
EXCCL3225U
L80
BLM31PG121SN1
F3
F2
S-N5054
F1
S-N5054
1
2
+15V
+15V
L7 HF50ACC322513
L6 100
µ
L1 100
µ
L2 100
µ
L3 HF50ACC322513
L4 100
µ
L5 100
µ
6
1
4
5
3
7
2
J2
L10 100
µ
L9 HF50ACC322513
L8 100
µ
TRV
13.8V
8V
SEND
BAND
ALC
8
2
6
1
4
5
3
7
GND
AF
MOD
SEND
ALC
RTTY
13.8V
SQLS
J3
L17 HF50ACC322513
L16 100
µ
L11 100
µ
L12 100
µ
L13 HF50ACC322513
L14 100
µ
L15 100
µ
C11 0.0047
6
1
4
5
3
7
2
J4
TRV
13.8V
8V
SEND
BAND
ALC
L20 100
µ
L19 HF50ACC322513
L18 100
µ
L21 HF50ACC322513
L22 HF50ACC322513
C1 0.0047
C80
100p
C2 0.0047
C3 0.0047
C4 0.0047
C5 0.0047
C6 0.0047
C7 0.0047
R1 8.2k
+8V
+8V
C8 0.0047
C9 0.0047
C10 0.0047
C12 0.0047
C13 0.0047
C14 0.0047
C15 0.0047
C16 0.0047
C17 0.0047
R2 8.2k
C18 0.0047
C19 0.0047
C20 0.0047
SQLAM
Q1
DTC114TU
SQLAS
Q2
DTC114TU
D1
1SS355
R3 4.7k
R4 33k
R5 15k
Q3
2SC4081
C21 0.0047
D2
1SS355
R7 4.7k
R8 33k
R9 15k
R10 4.7k
R6 4.7k
Q4
2SC4081
C22 0.0047
+3R3V
Q6
2SD1619
C23 0.0047
R12 10k
R11
150
Q5
DTA114EU
SENI
RT
K
I
ASND
OP+INA
OP
-
INA
OPOUT
A
EVR
OUT
A
VCNT
A
VCNTB
V+
OP+INB
OP
-
INB
EVR
OUTB
REF IN
VREF
GND
OPOUTB
IC210
NJM2172V
C212 2.2
R213 1k
R212
4.7k
C213
0.0022
1
2
3
4
5
6
78
9
11
12
13
14
10
R211 10k
C210
1
C214 10
R221
10k
C220
1
R222
4.7k
C223 0.0022
L210 100
µ
C211 10
+5V
+8V
+3R3V
+5V
C225 1
R226 33k
MOD
VB
MIGV
R224 22k
R200 10k
MOD
VA
C215
1
R216
33k
C226
1
1
2
3
4
5
6
7
14
13
12
11
10
9
8
OP+INA
OP-INA
OPOUTA
EVROUTA
VCNTA
VCNTB
V+
OP+INB
OP-INB
OPOUTB
EVROUTB
REFIN
VREF
GND
IC821
NJM2172V
+5V
+3R3V
+8V
+15V
R203
220k
C203
1
R202
4.7k
C469 1
R470 33k
R241 220
R242 1k
D241 MA8091
C241 10
Q810
2SC4081
R240 680
MICI
R472
47k
R479 8.2k
C461 1
+3R3V
+3R3V
+8V
+15V
+5V
+3R3V
+8V
+15V
+3R3V
+8V
+15V
+5V
C200 10
C464 10
MREC
C470 1
R471 1k
R463 10k
C460 1
1
2
3
4
5
6
7
8
IC201
TC4W53F
L201 100
µ
C201 10
R205 100
C205 0.1
MMUT
R208 1k
1
2
3
4
5
6
7
8
IC460
TC4W53F
R467 100
C466 0.1
MCPS
MPLA
Y
R469 4.7k
R468 33k
C467 1
C221
10
R218 15k
R228 15k
-12V
R460 10k
R461 10k
C465 0.1
-12V
SEND
-12V
R13
2.2k
R14 10k
C24 0.0047
+3R3V
+5V
+8V
+5V
+3R3V
+8V
+5V
+3R3V
+8V
+8V
+8V
+3R3V
+5V
Q7
2SC4081
R18
470
1
2
3
-
+
IC1
NJM2058M
R17
100k
R16
100k
BNDM
R21
470
7
6
5
-
+
IC1
NJM2058M
R19
100k
R20
100k
BNDS
1
2
3
4
5
6
7
14
13
12
11
10
9
8
OP+INA
OP-INA
OPOUTA
EVROUTA
VCNTA
VCNTB
V+
OP+INB
IC4
NJM2172V
OP-INB
OPOUTB
EVROUTB
REFIN
VREF
GND
L31 100
µ
C30 10
C46 1
R46 33k
R45 33k
C45 1
C34
1
R34
1k
R35
15k
R36 15k
C36 100
R37
100
R38 390
C37
10
Q8
2SC4081
C35
1
R39
1k
R41 15k
R40
15k
C38 100
R42
100
R43 390
C39
10
Q9
2SC4081
AAFVA
AAFVB
C32 10
R33 10k
C33 10
R47
10k
R15
47k
R32
10k
R31
10k
4
8
GND
V+
IC2
µ
PC4570G2
C40 10
C41 10
R44 100
R30 100
GND
V+
8
4
IC102
µ
PC4570G2
C113 10
C110 10
R152 100
R138 100
1
IC3
TC4W53F
2
3
4
5
6
7
8
1
IC5
TC4W53F
2
3
4
5
6
7
8
-
+
IC2
µ
PC4570G2
1
2
3
R24 68k
R22
10k
R23
10k
-
+
IC2
µ
PC4570G2
7
6
5
R28 68k
R26
10k
R27
10k
R25
1k
R29
1k
B_AF
A
A_AF
A
GND
1
GND
GND
GND
IC450
SI-3012KS
ADJ
VO
VIN
2
VC
3
4
8
7
6
5
D1R2V_A
D1R2V_SENS_A
L480
HF50ACC322513
D450 1SR154
C489 0.1
C480 22
C481 22
R450 22k
1
GND
GND
GND
GND
IC451
SI-3012KS
ADJ
VO
VIN
2
VC
3
4
8
7
6
5
D1R2V_SENS_B
D1R2V_B
L481
HF50ACC322513
D451 1SR154
C490 0.1
R451 22k
C484 22
C483 22
+15V
+15V
+15V
1
GND
GND
GND
GND
IC452
SI-3012KS
ADJ
VO
VIN
2
VC
3
4
8
7
6
5
D1R2V_SENS_T
D1R2V_T
L482
HF50ACC322513
D452 1SR154
C491 0.1
R452 22k
C487 22
C486 22
1
IC490
TC4W53F
2
3
4
5
6
7
8
R492 10k
R491 10k
-12V
-12V
+8V
R490
1k
DIFA
MON
IFIN_A
I
O
COM
IC550
TA79L05F
C548 0.1
C545 0.1
R493 560
C550 10
R549
10k
R550 10k
R551 100k
R559 100k
AGCDET_B
AGCDET_A
J5
C50 0.0047
SEND
RELAY
ALC
L50 100
µ
R50 10k
R51 10k
L51 EXCCL3225U
R49 ERZVF2M201
C51 0.0047
RL50
OMR-109F
IC50
PS7122AL
C52 0.0047
C53 0.0047
D50 1SS355
R52
10
Q50
DTC114TU
R53 390
Q51
DTC114TU
EALC
EXRL1
EXRL2
R160
1k
R161 2.2k
R163 12k
R162
100k
-
+
R164 100k
9
10
8
R165 100k
IC1
NJM2058M
R167
1k
R170 12k
R168 2.2k
R169
100k
+
-
R171 100k
13
12
14
R172 100k
IC1
NJM2058M
R166
470
R173
470
ANVOX
J6
METER OUT
MAIN(TX)/
SUB
EP50
METM
METS
RL140
NA-12W
MAIN
SP OUT
J140
L141
EXC-ELDR25C
J141
SUB
SP OUT
L142
EXC-ELDR25C
L52 100
µ
L53 100
µ
D140 1SS355
C149 0.0047
C148 0.0047
Q141
DTC114EU
SPON
13
12
11
10
9
8
7
6
5
4
3
2
1
CH1OUT
B-GND
CH2OUT
MUTE
STBY
S-VCC
B-VCC
FIL
TER
BTLOUT
BTLIN
S-GND
CH2IN
CH1IN
IC140
LA4485
C144 1000
C145 1000
C142 0.22
R141 10k
C143 100
C141 2200
R149
220
C127
1
C128
1
R142 47k
J142
L143
EXC-ELDR25C
R134 1k
R136 1k
R133
4.7k
R137
2.2k
C146 0.1
C147 0.1
R143 4.7
R144 4.7
R151 560
C140 1
Q140
2SD1801
Q131
CPH3403
C151 0.1
R139
10k
MAMS
MAMS
MAMS
MAMS
MAMS
C133 0.022
C134
0.082
1
2
3
4
5
6
7
14
13
12
11
10
9
8
OP+INA
OP-INA
OPOUTA
EVROUTA
VCNTA
VCNTB
V+
OP+INB
IC105
NJM2172V
OP-INB
OPOUTB
EVROUTB
REFIN
VREF
GND
C120 10
L140 100
µ
C123
1
R126 1.8k
R127 1.8k
R129 1.8k
R128 1.8k
AFGVS2
AFGVS1
AFGVM1
AFGVM2
R146 22k
R147 390
R145 1k
R135 4.7k
Q132
CPH3403
C152 0.1
SAMS
SAMS
SQLAS
C125 10
C126 10
R119 10k
R120
10k
C121
10
R159
1k
-
+
1
2
3
IC102
µ
PC4570G2
R113 1k
C117 2.2
R104
10k
C129
0.0033
R114
10k
R174
1k
R116
10k
C118 2.2
C130
0.0033
R109
10k
IC102
µ
PC4570G2
R115 1k
5
6
7
-
+
R103 10k
Q100
2SJ144
C103 1
R102 100k
R101
4.7k
C108 1
R107 100k
R106
4.7k
Q101
2SJ144
R108 10k
SQLS
SQLM
R100 1k
R157
2.2k
R105 1k
R158
2.2k
C28
10
C29
10
1
IC181
TC4W53F
2
3
4
5
6
7
8
C101 0.1
BUS LINE4
1
IC101
TC4W53F
2
3
4
5
6
7
8
C106 0.1
CR
OSS
AFOUT_B
AFOUT_A
C100 0.1
C105 0.1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
STROBE
DATA
CP
Q0
Q1
Q2
Q3
GND
QS1
QS2
Q7
Q6
Q5
Q4
OE
VCC
IC250
CD74HC4094M
2
10
1
11
3
4
5
6
7
8
9
12
13
14
15
16
STROBE
IC260
CD74HC4094M
DATA
CP
Q0
Q1
Q2
Q3
GND
QS1
QS2
Q7
Q6
Q5
Q4
OE
VCC
9
8
7
6
5
4
3
2
1
10
11
12
13
14
15
16
17
18
IC251
TD62783AF
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
VS
GND
O8
O7
O6
O5
O4
O3
O2
O1
IC261
TD62783AF
9
8
7
6
5
4
3
2
1
10
11
12
13
14
15
16
17
18
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
VS
GND
O8
O7
O6
O5
O4
O3
O2
O1
C260 0.1
DRES
+15V
+3R3V
MSTB2
MD
AT
MCK
C250 0.1
+3R3V
R258 10k
R259 10k
R260 10k
R261 10k
R262 10k
R263 10k
R264 10k
R265 10k
R257 10
R256 10
R255 10
R254 10
R253 10
R252 10
R251 10
R250 10
R279 10k
R280 10k
R278 10k
R281 10k
R282 10k
R283 10k
R284 10k
R285 10k
R276 10
R277 10
R275 10
R274 10
R273 10
R272 10
R271 10
R270 10
TXB0
TXB1
TXB2
TXB3
TXB4
TXB5
TXB6
TXB7
TXB8
TXB9
TXB10
MODS
HFS
50MS
AMS
D141
1SS355
C150 0.0047
R150 220
+15V
Q142
DTC114EU
MAFS
MICAF
Q143
DTC114TU
MEMORY
KEYER
VOICE
RECORD
J7
EP52
D51
RB706F
+3R3V
+3R3V
+5V
+5V
-12V
+15V
-12V
+8V
+8V
+3R3V
+5V
+15V
-12V
+8V
+8V
+8V
+8V
+3R3V
+5V
+15V
-12V
+8V
+8V
-12V
+15V
+5V
+3R3V
EPAD
R54 2.2k
R55 2.2k
L54 100
µ
D52
1SS355
R56 4.7k
R57
33k
R58 15k
Q52
2SC4081
R59 4.7k
MUTEI
J8
KEY
EP51
KEY
L55
100
µ
C56 0.0047
J450
J495
OUT
GND
VCC
J496
GND
VCC
IN
3
Y
VCC
IC495
SN74LVC1G08DCKR
B
2
GND
1
4
5
A
C495 0.1
C496 0.1
J901
SPDO
GND
SPDI
GND
R918 100
R938 100
C497 0.1
GND
VDD5
GND
+3R3V
+3R3V
+3R3V
+5V
+8V
+15V
-12V
GND
L456 EXCCL3225U
C456 0.0047
L454 BLM31PG121SN1
L455 BLM31PG121SN1
C455 0.0047
C454 0.0047
L453 EXCCL3225U
L452 EXCCL3225U
L451 LW16
L450 EXCCL3225U
C453 0.0047
C452 0.0047
C451 0.0047
C450 0.0047
+8V
+15V
-12V
J411
CIVE
CIV
CIVE
VDD5
CIVE
NC
CIV5V
LED0
LED1
GND
EP421
EP420
EP417
EP416
L418 HF50A
CC322513
CIV
CIVE
LED0
LED1
L495
47
µ
L496
47
µ
J490
J491
REF I/O
1
2
3
4
5
6
7
14
13
12
11
10
9
8
OP+INA
OP-INA
OPOUTA
EVROUTA
VCNTA
VCNTB
V+
OP+INB
IC180
NJM2172V
OP-INB
OPOUTB
EVROUTB
REFIN
VREF
GND
L180 100
µ
C180 220
C194 1
C195 1
R184 1.8k
R183 1.8k
R185 1.8k
R186 1.8k
PHML2
PHML1
PHSL1
PHSL2
C183 10
C184 10
R180 10k
R181
10k
R110 10k
R111 10k
C181 10
C182 10
C185
10
R195
1k
C187 0.1
C186 10
R196 1k
L181 100
µ
1
2
3
4
8
7
6
5
IC182
TPA6111A2DGN
VO1
IN1-
BYPASS
GND
SHUTDOWN
IN2-
VO2
VDD
C191 0.47
R191 1k
R192
27k
PHOS
C197 100
C193 10
R194
27k
C196 100
PHOM
1
IC100
TC4W53F
2
3
4
5
6
7
8
R193
1k
PMIX
R189
10k
R190 10k
C189
10
ALC
D62
1SS355
R66
100
-
+
IC60
NJM2058M
14
13
12
R65 220k
R62 2.2k
R61
68k
R63 100k
R64
10k
-
+
IC60
NJM2058M
7
6
5
R72 330k
R70 6.8k
R69
RH03ADCS2X
R68 6.8k
R67
47k
R71
47k
10
9
8
+
-
R74 220k
IC60
NJM2058M
R89
1k
Q62
2SA1576
R60
22k
D60
1SS355
D61
1SS355
REFV
IDLV
IDHV
C65 1
R488 0
D64
MA2S728
R86
330
R87 100
-
+
1
2
3
IC60
NJM2058M
R85 3.3M
R84
220k
R83 100k
CP81
FOR
V
POCV
R77
220k
R76
33k
R75
22k
GND
V+
4
11
IC60
NJM2058M
R98 100
C69 0.1
R99 1k
C70 0.1
Q60
UMH11N
Q63
DTC114TU
Q61
DTC144TE
Q64
DTA144EE
3
2
1
4
5
6
AMS
R82 RH03ADC15X
R81 RH03ADCJ5X
R80 100k
HFS
R78 100k
R79 RH03ADCJ5X
50MS
UNSB
Q474
2SA1576
R474 22k
Q476
DTC114TU
R476
470k
R123 4.7k
R124 4.7k
+
-
IC104
µ
PC4570G2
7
5
6
GND
V+
8
4
IC104
µ
PC4570G2
R125 100
C115 10
R154 100
C116 10
-
+
IC104
µ
PC4570G2
1
3
2
MPLAY
SPLAY
12
13
14
IC61
NJM2058M
-
+
5
6
7
IC61
NJM2058M
-
+
3
2
1
IC61
NJM2058M
-
+
R91 68k
10
9
8
IC61
NJM2058M
-
+
R95 2.2M
R96
3.3M
R97 6.8M
C68 0.001
VDL
GND
V+
4
11
IC61
NJM2058M
R94 100
C71 0.1
R197 100
C198 0.1
D65 1SS355
ALCL
D66 1SS355
AFON
C251 0.1
C261 0.1
L250 EXCCL3225U
+15V
TR
VI
R88
1k
TRVI
MONS
R560
100k
AG
C
O
A
AG
C
O
B
R561
100k
RXMREC
RXSREC
DC OUT
(MAX 1A)
MAIN
UNIT
(2)
MAIN
ACC(1)
MAIN
ACC(2)
SUB
ACC(1)
SUB
ACC(2)
R223
1k
C222
2.2
C216
1
R201 10k
R204 100
C204 1
-12V
C42 0.1
C44 0.1
C43 0.1
C31 0.1
V+
GND
11
4
IC1
NJM2058M
-12V
C26 10
C25 10
C54 0.0047
C55 0.0047
+5V
C135 0.022
R140 10k
C124
1
R131 2.2k
C131 1
C132 1
C188
10
R199 4.7k
R198
47k
C61 1
C62 1
R90
1M
RL141
NA-12W
+8V
+8V
-12V
+15V
+3R3V
+15V
+5V
+5V
+15V
+15V
+5V
+5V
+5V
+15V
+15V
-
12V
+15V
+8V
+3R3V
+5V
+5V
+15V
+8V
-12V
+5V
+3R3V
+3R3V
+3R3V
+5V
+3R3V
+5V
+8V
+15V
-
12V
+5V
-
12V
+8V
+5V
-
12V
+8V
+8V
+3R3V
+8V
+8V
+8V
-
12V
+8V
-12V
+8V
+5V
to LOGIC
unit J822
to OSC
unit J71
to LOGIC
unit J826
ALC ADJUST
EALC
METS
METM
SPON
SPE
SPO
C136 0.082
EALC
EALC
EALC
EALC
KEY
+8V
+8V
+3R3V
to DC-DC unit J2
to SCOPE unit J906
IDLV
IDLV
ALC
BUS LINE3
BUS LINE2
DSPTHRML
R584
10k
R494 5.6k
R496 5.6k
R214 22k
- +
+ -
1
2
3
4
8
7
6
5
IC230
µ
PC4570G2
AFIN
R234
100
C233
1
R232
100k
C234
220p
R231 100
C231 100
R466 1k
R462 15k
R233 10k
C235 0.1
C230 100
R230 100
R249
10k
C249
0.1
VO
X
A
F
R235
0
VO
XAFE
1
IC191
TC4W53F
2
3
4
5
6
7
8
C190 470p
C206
0.0018
SAMS
C208 0.1
1
IC192
TC4W53F
2
3
4
5
6
7
8
C192 470p
C207
0.0018
MAMS
MAMS
MAMS
C209 0.1
R73 4.7k
R93 RH03ADCS3X
R176
1.2k
R117 33k
IDL
R118 100k
R92
330
D63
1SS355
C243 100
C242 470
C244 0.1
C217
82p
C57 330p
C58 330p
C122 10
R130 2.2k
R188 2.2k
R187 2.2k
R851
470
D67 MA8047
R132 1k
R155 47k
R156 47k
R243
1k
R245
6.8k
R244 1k
R247 1k
R246
1k
R248
6.8k
-
12V
+15V
+8V
+3R3V
+5V
-
12V
+15V
+8V
+3R3V
+5V
+15V
-
12V
+8V
+3R3V
+5V
+5V
CP82
4.78V
4.0mV
7.97V
-11.7V
14.8V
5.3mA
3.17V
1.7mV
1.3mV
14.9V
2.31V
2.30V
8.89V
2.31V
MAIN side
SQL open : 3.03V
close : 6.1mV
SUB side
SQL open : 3.03V
close : 6.1mV
-4.94V
-9.63V
1.7mV
2.82V
2.81V
range : input impedance
200mV : 100M
Ω
2V : 11M
Ω
20V,200V,1000V : 10M
Ω
MESUREMENT CONDITIONS
voltage at RX(no instrudion)
frequency : 14.1 MHz
mode : J3E(USB)
(TX) : no modulation
SCOPE ATT : 0dB
Digital tester
ANT(RX) : no input
Summary of Contents for IC-7800
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 65 VOLTAGE DIAGRAM 67 Dec 2009 ...
Page 79: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 60 VOLTAGE DIAGRAM 64 Feb 2009 ...
Page 157: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Aug 2008 ...
Page 245: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Jul 2008 ...
Page 333: ...THE TRANSCEIVER i7800 SERVICE MANUAL S 14015HZ C1 2 Mar 2006 ...
Page 555: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14015HZ C1 2 C 2004 2006 Icom Inc ...