Icom IC-7851 Servise Manual page 165

RF-B UNIT (RF-B-3)
+15V
+8V
+11V
-12V
RF-B-1
Band HF3V VHF3V
HF3V
HF3V
HF 0
VHF3V
VHF3V
IFW
50MHz 2.76
IFW
IFM
IFM
IFN
IFN
IFSN
IFSN
L3003 L3004 C3001
HF_IF
68N 0.39U
0.01
L3005
0.12U
RF-B-2 3
C3002
50M_IF
0.01
MP3001
1SV307
Q3051
2SC4536
J3051 D3051
C3056
[SCP_IFB]
TO SCOPE J12 22P
L3054 R3054
10U 12
R3055
1K
IC3702
J3701 8
VT/COMP
GND 7
2 R3706 V+
[36KIFB]
DIFA 6
1 OUT
TO MAIN J197
5
100 COMP
C3705
22P
NJM5534MD
IC3752 R3757
D3751
6
7
220
L1SS400
5
NJM072BM
IC3752
2
R3761
1
AGCDET
3
1K R3758
D3752
NJM072BM
220
RF-B-1 L1SS400
AGC
R3707
C3710
100 CE-LH 100
C3708 0.1
8
IC3701 V+
NJM072BM
V-
C3711 0.1
4
C3709
100 CE-LH R3708
100
[R2LOB]
TO LOCAL J4502 J3801
+8V
2.98
0
MP3006
3615
IC3101
C3015
SKY13322
82P
10 1
J4 J2
9 2
L3006 V4 V2
C3005 C3017
6 8 3
N/C
GND IN RFC
7 4
0.01 0.01 V1
V3
6 5
J3 J1
LR-524A
82P
C3016
R3059
C3051
0.01
12
L3051
LR-317
MP3051
2427
C3513
R3510
120P
150
R3702
IC3501
R3515
820 8
VT/COMP
7
10K
V+
6
IC3701
R3517 OUT
1 2 5
VT R3704 COMP
10K
2 1
IN-
C3515 NJM5534MD
3 3
IN+ 3.3K
4 180P
NJM072BM
V- R3709
C3516
3.5P
3.3K
C3610
R3610
R3755 R3754
22K R3616
10K 470
2
IC3601
1 8
R3751 10K 10K
VT/COMP
3 7
R3618
IC3701 V+
IC3751 6 6
6.8K OUT
7 5
NJM4580M
C3613 COMP
5
NJM072BM NJM5534MD
R3756 680P
R3752
22K C3614
22K
6
390P
7
R3753
5
IC3751
10K
NJM4580M
C3752 C3754
0.1 0.1
8 8
IC3751 V+ IC3752 V+
NJM4580M GND NJM072BM V-
4 4
C3753 C3755
0.1 0.1
R3802 18
R3151
R3152 10K
R3153 10K
R3154 10K
10K
L3111 L3112
LS-484B LS-484B
MCFW
(BW=15k)
FI3111
FL-489
0.01 0.01
1 4
IN GND
3 2
C3111 C3115
GND OUT
L3121 L3122
LS-484B
LS-484B
J1
5
MCFM
V1
(BW=6k) 4
N/C RFC
FI3121 3
V2
FL-360A
2
C3121 C3128 J2
1 4 1
IN GND
3 2 IC3151
0.01
GND OUT 0.01 SKY13322
L3131 MCFN L3132
LS-484B (BW=3k) LS-484B
FI3131
FL-397
C3138
C3131
1 4
IN GND
3 2
0.01
0.01 GND OUT
FI3141
0.01
FL-483
C3141 0.01
1 4
IN GND C3142
3 2
GND OUT
J3142 J3144
R3511
5.6K
1
R3513 Q3501
VT C3509
2 KTC3770U C3503
R3501
IN- L3502
0.01
3
IN+ 1K
4 4.7U
C3517 33
V- 1 F93
0.01
R3504 C3506
10 10P
120P
R3611
5.6K
0.01
1
Q3601
VT R3613 C3607
2 KTC3770U
R3601
IN- C3603 L3602
3
IN+ 1K
4 4.7U
33
V- C3617 1 F93
0.01 R3604
C3605
10 10P
1.33
V -
P P
SN74LVC2G00DCTR
IC3802
IC3801 1 8
R3805
1 6 2 7
1A 1Y
2 5 3 6
L3801 GND VCC 100
C3802
3 4 4 5
2A 2Y
0.39U 0.001
SN74LVC2GU04DCKR
R3806 L3802
R3804
100K
100 0.18U
J3
6
V3
7
LQW18AN56NG00
8
R3167
V4 C3168 C3169 L3164
9
J4
10
0.01 0 0.01
L3162
LR-595
R3162
C3163
100 22P
Q3161
2SC4536
Q3162 R3166
12 C3166
10
Q3163
L2SA1576AR
DMG564010
R3164 R3165 L3163
3
1K 10U
4.7K
2
1
C3403 10 F93
C3401
0.1 MP3301
IC3401
1 8
COM V+ L3402
2 7 3615
EN NC
3 6
GND NO
4 5
GND IN
LR-528 R3321
TS5A2053DCTR
L3401
0
#617DS
C3412 10 F93
C3411
0.1
IC3402
L3311 R3315
1 8
COM V+ L3403
2 7 10U 12
EN NC
3 6
GND NO
4 5 C3319
GND IN R3316
10
LR-528
TS5A2053DCTR
1K
L3803
2.7U
6
R3808 R3351
7
5
47 IC3351
NJM2904V
1.45
V -
P P
*: Refer to the PARTS LIST for the value and name of component.
9-22
R3851
47
IC3851
1 5
CTRL VIN
2
GND
EP3851
3 4
NB VOUT
MMZ1608Y102BT
NJM2871BF05
L3302
LR-596
L3303
0.1U
Q3302
2SC4536
C3303 C3304
0.01
0.01
R3305
12
Q3301
L2SA1576AR
10
R3303 R3304 C3306
1K
4.7K
4
5
6
C3309
0.01
R3318
2.7K
D3301
BAP70Q
C3315
L3321 C3307
0.01
39N 0.01
Q3303
2SC4536
Q3304
L2SA1576AR
R3314
4.7K
+5V
R3355
100K
2 8
R3357
1 V+
100K
3 GND
100
Q3351
IC3351 4
L2SC4081
NJM2904V
IC3351
NJM2904V