Icom IC-7851 Servise Manual page 140

TX
RX
1LoA
SCP_IFA
IC3802
SN74LVC2G00
LO
IC3801 PHASE
SN74LVC2GU04 SHIFT AMP
IC3802
AMP
2LoA
SN74LVC2G00
LO
AMP
IC3501
NJM5534
IC3752 IC3751/D3751-D3752
NJM072
NJM4580/L1SS400x2
IF
AMP
AGC
AGCDETA BUFF
DET
IC3702 IC3701
NJM5534 NJM072
IC3601
NJM5534
2IFA
PHASE
Σ
SHIFT
IF
AMP
Q3351/IC3351
L2SC4081/NJM2904
AGCA
DRIVER
IC2702
NJM7808DL1A
+8
+8V +11V
REG
IC3851
NJM2871BF05
+5
+5V
RF-A UNIT REG
1LoB
SCP_IFB
IC3802
SN74LVC2G00
LO
IC3801 PHASE
AMP
SN74LVC2GU04 SHIFT
2LoB AMP
IF
IC3702 IC3701
AMP
NJM5534 NJM072
Q3501
IC3501
KTC3770
2IFB NJM5534
PHASE
Σ
SHIFT
IC3752
IF
NJM072
AMP
IC3601 Q3601
AGC
AGCDETB BUFF NJM5534 KTC3770
DET
IC3751/D3751-D3752
NJM4580/L1SS400x2
Q3351/IC3351
L2SC4081/NJM2904
AGCB DRIVER
IC2702
NJM7808DL1A
+8
+11V
+8V
REG
IC3851
NJM2871BF05
+5
+5V
REG
RF-B UNIT
BAR64x2
IC2701 D2201-D2202
SKY13350
ATT
RF
SW
Q2202
L2SA1576
VHF3V
HF3V
Q3051
2SC4536
AMP HF3V CTRL
Q2205/Q2206
RSQ035P/LDTC114E
BIAS
Q3052
L2SA1576
VHF3V CTRL
Q2601/Q2602
LDTC114E/RSM002P03
Q3501
KTC3770
IF
AMP
IC3401
TS5A2053
Q3601 Q3303 D3301 Q3302
BAP70Q
2SC4536 2SC4536
KTC3770
IF IF VARIABLE IF
SPLITTER
AMP AMP ATT AMP
IC3402
TS5A2053
Q3304
BIAS BIAS
L2SA1576
Q3301
L2SA1576
VHF B0
HPRE B1
MDAT MCK
HPRE2 B2
S/P S/P
MCK STBRF
VPRE B3
STBRF CONV RESH CONV
VPRE2 B4
RESH VHFDW B5
IFW
IC1901/IC1903 HFDW IC1905/IC1907 B6
IFM
SN74AHC595/62783 DIGI SN74AHC595/62783 B7
IFN
HPRE1
IFSN
B8
B9
HF3V
MCK
B10
MDAT VHF3V S/P
STBRF
B11
MCK S/P
IFW CONV
RESH
B11W
STBRF CONV
IFM
ATT3
RESH
IFN
IC1904/IC1906 ATT6
IC1902
IFSN
SN74AHC595/62783 ATT12
SN74AHC595 VPRE1
D2201-D2202
BAR64x2
SKY13350
IC2701
ATT
RF
SW
Q2202
L2SA1576
VHF3V
HF3V
Q3051
2SC4536
AMP HF3V CTRL
Q2205/Q2206
RSQ035P/LDTC114E
BIAS
IC3802
SN74LVC2G00
Q3052
LO
L2SA1576
AMP
VHF3V CTRL
IF
Q2601/Q2602
AMP
LDTC114E/RSM002P03
IC3401
TS5A2053
IF
SPLITTER
AMP
D3301 Q3302
Q3303
IC3402
2SC4536 BAP70Q
2SC4536
TS5A2053
IF VARIABLE IF
HYBRID
AMP ATT AMP
BIAS BIAS
Q3304 Q3301
L2SA1576 L2SA1576
VHF B0
HPRE B1
MDAT MCK
HPRE2 B2
S/P S/P
MCK STBRF
VPRE B3
RESH CONV
STBRF CONV B4
VPRE2
RESH VHFDW B5
IFW
IC1901/IC1903 HFDW IC1905/IC1907 B6
IFM
SN74AHC595/62783 DIGI SN74AHC595/62783 B7
IFN
HPRE1
IFSN
B8
HF3V
B9
MDAT VHF3V MCK
B10
S/P S/P
MCK IFW STBRF
B11
CONV RESH CONV
STBRF IFM B11W
RESH
IFN ATT3
IC1902
IFSN IC1904/IC1906 ATT6
SN74AHC595 VPRE1
SN74AHC595/62783 ATT12
Q2201 Q2203/Q2204
DIGISEL-A
2SC3356 RD01MUS2Bx2
LO LO
UNIT
AMP AMP
ATT ALC
CTRL DET
D2203-D2204
MMBD701x2
Q2603
MT3S20P
LO
LPF HPF
AMP
IC2102
SD5400
LPF DIPLEXER DIPLEXER
MIX1V
MKR(100kHz)
HF3V
VHF3V
64.455MHz
RF
HYBRID ATT
SW IF
LPF
TRAP
AMP
Q2501-Q2504
IC3001 Q2551
MMBFU310x4
SKY13350 MT3S20P
BW=15kHz
XTAL
BPF
FI3111
IC3151 FL-488 IC3111
SKY13322 SKY13322
BW=6kHz
RF XTAL RF
SW BPF SW
FI3121
FL-358
BW=3kHz
XTAL
BPF
FI3131
Q3162 FL-396
Q3161
L2SA1576
BW=1.2kHz
2SC4536
IF XTAL
BIAS
AMP BPF
FI3141
FL-483
Q2201 Q2203-Q2204
2SC3356
RD01MUS2Bx2
LO LO
DIGISEL-B
AMP AMP
UNIT
ATT ALC
CTRL DET
D2203/D2204
MMBD701x2
Q2603
MT3S20P
LO
LPF HPF
AMP
LPF
DIPLEXER DIPLEXER
IC2102
SD5400
MKR(100kHz)
MIX VHF3V
HF3V
SW
VHF3V
Q2551
MT3S20P 64.455MHz
RF
ATT
SW IF
TRAP LPF
AMP
Q2501-Q2504
IC3001
MMBFU310x4
SKY13350
BW=15kHz
FI3111
FL-489
XTAL
BPF
IC3111
IC3151
SKY13322 SKY13322
BW=6kHz
FI3121
FL-358
RF XTAL RF
SW BPF SW
BW=3kHz
FI3131
FL-396
XTAL
BPF
Q3161
Q3162
L2SA1576 2SC4536 BW=1.2kHz FI3141
FL-484
IF XTAL
BIAS
AMP BPF
Q201
2SC5551A
RF
BPF
AMP
IC1
CAT24C256
IC4-IC5
EEPROM
D_S
CTRL
DSCLA DSDAA BU2099x2 DIGI
HFDW HPRE
Q2004-Q2005
2SC5551Ax2
P.AMP1
Q2051
2SC4536
Q2003
2SC4536
+5.5dB
ATT
DW AMP
P.AMP2
HPRE2
BIAS
Q2052
BIAS
L2SA1576 Q2002
L2SA1576
VHFDW VPRE
Q2306/Q2308
2SC4536x2
P.AMP1
Q2351
2SC4536
Q2304
RD01MUS2B
+6dB
ATT DW AMP
P.AMP2
VPRE2
BIAS BIAS
Q2352 Q2303
L2SA1576 L2SA1576
IFW
30.0-50,54-60MHz
IFM
IFN
IFSN
BPF
B11W
50.0-54.0MHz
BPF
B11
Q201
2SC5551A
RF
BPF
AMP
IC1
CAT24C256
IC4-IC5
EEPROM
D_S
CTRL
DSCLB DSDAB BU2099x2 DIGI
HFDW HPRE
Q2004-Q2005
2SC5551Ax2
P.AMP1
Q2051
2SC4536
Q2003
2SC4536
+5.5dB
ATT
DW AMP
P.AMP2
BIAS
HPRE2
Q2052
BIAS
L2SA1576 Q2002
L2SA1576
VHFDW VPRE
Q2306/Q2308
2SC4536x2
P.AMP1
Q2351
2SC4536
Q2304
RD01MUS2B
+6dB
ATT DW AMP
P.AMP2
VPRE2
BIAS
BIAS
Q2352 Q2303
L2SA1576 L2SA1576
IFW 30.0-50,54-60MHz
IFM
IFN
BPF
IFSN
B11W
50.0-54.0MHz
BPF
B11
8-2
RX_A
12dB 6dB 3dB
ATT ATT ATT
VHF ATT12 ATT6 ATT3
0.03-0.5MHz
LPF
B0
0.5-1.6MHz
LPF
B1
1.6-2.0MHz
BPF
B2
2.0-3.0MHz
BPF
B3
3.0-4.0MHz
HPRE2
BPF
B4
4.0-6.0MHz
BPF
B5
6.0-8.0MHz
BPF
B6
8.0-11.0MHz
BPF
B7
VPRE2 11.0-15.0MHz
BPF
B8
15.0-22.0MHz
BPF
B9
22.0-30.0MHz
BPF
B10
RX_B
12dB 6dB 3dB
ATT
ATT ATT
VHF ATT12 ATT6 ATT3
0.03-0.5MHz
LPF B0
0.5-1.6MHz
B1
LPF
1.6-2.0MHz
BPF B2
2.0-3.0MHz
B3
BPF
3.0-4.0MHz
HPRE2
B4
BPF
4.0-6.0MHz
BPF B5
6.0-8.0MHz
B6
BPF
8.0-11.0MHz
BPF B7
VPRE2 11.0-15.0MHz
B8
BPF
15.0-22.0MHz
BPF B9
22.0-30.0MHz
BPF B10