Icom IC-7800 - Page 229

Aug. 2008
68
SCOPE UNIT
VOLTAGE LINE
Explanatory notes
18
R109
0.0047
C209
33p
C208
1p
C422
0.0047
C33
820p
C404
LS-484B
L5
0.1
C210
CP68
470p
C4
6.8k
R423
CP55
L303
10k
R410
100
R305
270
R107
100k
R437
J2
0.0047
C21
J1
HF50ACC322513
L59
L53
RESET
CP67
1C428
0.0047
C106
+5VLD
330
R206
LS-471A
L201
4.7kR52
0.0047
C17
CLKX1
SST2
SST2
SST2
CP54
S3LO
18p
C202
8.2k
R307
100R63
2SK882
Q202
L8
LR-442
TA79L05F
IC2
IO
G
SST1
SST1
0.0047
C16
820
R201
100R74
12k
R418
FSR1
+3R3VLP
0.0047
C34
DX1
CP66
0.0047
C2
100
R301
120p
C405
470p
C14
5p
C18
CP53
270
R108
3.3kR54
L301
LR-395
HF50ACC322513
L55
HSB88WS
D101
270k
R413
J4
L304
SMUT
270
R110
MA77
D12
33p
C205
1kR8
CP65
0
R431
L54
0.0047
C206
L1
IC403
1
OUT1
2
II1
3
IN1
4
V
-
5
IN2
6
II2
7
OUT2
8
V+
0.1
C423
S3IF+
S3IF+
S3IF+
AGC
ATTV
AGC AGC
ATTV
S3IF+
S3IF+
S3IF+
DTC114EU
Q11
DTC114EU
Q31
CP51
1k
R404
+8VLP
0.0047
C304
100R65
0
R113
270
R105
D3
1SV263
18p
C201
100R75
0.001
C52
1k
R3
HF50ACC322513
L58
56p
C107
CP64
0.0047C8
DR1
IC1
1
OUT1
2
GND
3
OUT2
4
VCONT2
5
IN
6
VCONT1
10k
R411
1
C430
0.0047
C303
GND
2.2k
R103
CP50
L2
18p
C12
L9
0.0047
C9
C43
3.3kR55
L4
39nL13 L14
L12
D2
CPH5513
1
4
5
23
0.0022
C406
0.1
C429
RH03ADCS5X
R416
HF50ACC322513
L56
RESET
CP63
L10
0.0047
C7
GND
1k
R402
0.1
C432
100k
R438
1k
R403
0.1
C57
100
R12
0
R421
L51
10
C433
SCK
SCK
CP52
+2R5V
+2R5V
+2R5V
L101
LR-395
1k
R16
1k
R34 L31
0.01 C36
100R64
10k
R204
2SC4673
Q301
100R76
L302
LR-395
2.5p
C211
L7
10k
R422
J11
CP62
+3R3V_
+3R3V_
+3R3V_
+3R3V_
DTC114EU
Q12
0.001
C51
2SC5551
Q2
1p
C421
10k
R412
8.2k
R111
LS-484B
L202
100
R81
D1
CPH5513
1
2
4
3
5
330
R208
10k
R415
MA77
D11
18p
C13
4.7k
R5
Q1
2SC4081
J3
D40M
D40M
+3R3VL
+3R3VL
+3R3VL
+3R3VL
2SK882
Q201
HF50ACC322513
L60
CP61
0.0022
C407
D40M
D40M
820
R202
82n
L205
10
C53
1k
R6
0.0047
C6
15
R419
1k
R20
100R72
0.1
C23
CP73
100R77
0.0047
C31
FSX1
CLKX1 FSR1 DX1 DR1 FSX1
1k
R405
1p
C11
RH03ADCJ4X
R11
C41 10p
CP60
LS-484B
L6
40MHZ
40MHZ
40MHZ ATTV S2LO AGC
ATTV AGC
100k
R436
0
R429
0.0047
C302
18p
C301
100
R104
0.0047
C22
RESET
0.1
C424
IC404
1
OUT1
2
II1
3
IN1
4
V
-
5
IN2
6
II2
7
OUT2
8
V+
0.0047
C1
100
R112
270
R302
15
R207
CP72
10C56
3VH
RESET
+5VLD
CLKX1
FSR1
DX1
S3IF+
DR1
GND
+2R5V
+3R3V_
D40M D40M
+3R3VL
+2R5V
+3R3VL
FSX1
RESET
3VH
5pC207
3p
C212
CP59
2SC4673
Q101
HF50ACC322513
L57
R209
47k
0.1
C10
10p
C408
220
R1
0.01
C426
2.2k
R2
4.7k
R38
L204
0.1
C411
47
R203
SDAT
SDAT
1kR17
100R66
100R53
CP71
1.5k
R4
150
R14 L32
100R61
IC401
1
OUT1
2
II1
3
IN1
4
V
-
5
IN2
6
II2
7
OUT2
8
V+
56
R7
CP58
L102
LR-395
S2LO
S3LO
S2LO
0.0047
C32
SYNCIO
LS-484B
L203
0.1
C103
0.0047
C3
150
R308
3.3k
R9
HSB88WS
D4
0.0047
C15
18
R106
2.2k
R306
0.0047
C24
IC405
NJM2904M
1 2 3 4
5 6 7 8
SPS0
SPS0
SPS0
150p
C102
CP70
0.0018
C403
FL-357
FI201
1
IN
2
OUT
3
GND
4
GND
5
6
CP57
100k
R433
0
R435
CP74
10
C54
47
R205
L11
L52
0.0047
C101
L3
18
R303
0.1C55
CP69
120p
C409
L103
1k
R21
4.7kR51
100R71
470p
C5
150
R18
1k
R35
C37 0.01
C35 0.01
+5VLP
SST2
S3LO
SST1
+3R3VLP
SMUT
+8VLP
GND
RESET
SCK
D40M
40MHZ
SDAT
S2LO
SYNCIO
SPS0
+5VLP
100R62
39k
R417
CP56
270
R304
0.0047
C204
10k
R414
100R73
0.1
C410
L401
0.1
C420
0.1
C425
0.1
C434
82p
S3LO
40MHZ
15p
C42
56p
C44
C109
L104
120p
68p C108 68p C110
C45 18p
36p C46
DX1
FSX1
DR1
CLKX1
3VH
3VH
3VH
CLKX1 FSR1 DX1 DR1 FSX1 3VH
SDAT
SCK
SST1
SPS0
SST2
FSR1
SMUT
SMUT
RESETRESET
- 12VL
-
12VL
ATTV
SYNCIO
SYNCIO
AGCAGC
DTC114EU
Q33
SSA
SSB
DTC114EU
Q32
0.001C40
3.3kR39
4.7k
R36
0.001C39
3.3kR37
+8V_
+8V_ +8V_
+8V_
IC31
1
OUT1
2
GND
3
OUT2
4
VCONT2
5
IN
6
VCONT1
0.012 C401
- 5VL
S2LO
S2LOS2LO
200KHz
8V
8V 8V
8V
8V
8V 8V8V
8V8V8V
+5V +5V +5V
- 5V - 5V - 5V
- 5V
+2R5V +2R5V
ATTV
SCOPE
UNIT (3)
SCOPE
UNIT (2)
SCPA SCPA
SCOPE UNIT (1)
from RXPLL-A
unit J1301
from RXPLL-B
unit J1301
from RXPLL-B
unit J601
from MAIN
unit J808
to MAIN
unit J410
SCPB SCPB
SAD
+8V +8V
SCPT
AGND
SSA SSA
SSB SSB
SATT AT TV
SMUT
+8V
T8V T8V
T8V
T8V
AGND
AGND
+5V
+3R3V
- 12V
+3R3V_
+3R3V_
+3R3V_
AGND
SST2
SPSO
SST1
SCK
SDAT
DGND
SYNCIO
FRWT
DXIS
DFRS
DFXS
SDR1
DSPCK
DRES
DGND
L34
C38 0.01
TO ADC IN
0.0V
1.25V
0.0V
7.25V
6.99V
7.66V0.99V
1.12V
1.33V
0.67V
7.30V
0.0V
0.0V
E
C
F
4.57V
3.17V
3.17V
- 11.64V
2.22V
2.55V
2.57V
4.83V
4.68V
7.19V
- 10.3V
1.41V
0.67V
- 4.99V
TX: 7.99V
RX: 0.0V
TX: 0.00V
RX: 3.28V
Display ON: 0.0V
OFF: 6.67V
D
7.90VAB
A
B
C
D
E
F
MAIN
6.46V
0.0V
0.0V
5.68V
2.29V
14.55V
SUB
0.0V
6.47V
5.68V
0.0V
14.55V
2.28V
range: input impedance
MESUREMENT CONDITIONS
SCOPE ATT: 0dB
voltage at RX(no instruction)
frequency: 14.1 MHz
mode: J3E(USB)
Digital tester
ANT(RX): no input
(TX): no modulation