Icom IC-R3 Service Manual page 55

C19 C20 C21 R256
Q26
1 1 1 4.7 k
2SC4081 S
18.8 V 18.5 V
15V
D15 D5 D19 D20
C33 R82
1SS372 1SS372 1SS372 1SS372
1 47 k C18
3.3
C17 C22 C23
1 1 1
L1
CD54-101KC
C98 C116
22 0.1
3.1 V 4.1 V
VCC
Q303
W5
2SB1132 R
C303
R955
47
33 k
3.4 V
Q304
2SC4617 Q
R956 C951
D301
C16 18 k 4.7
0 MA2S111
0.001 3.3 V
Q820
CFL ON: 3.3 V
2SB1201 S
Q821
CFL ON: 3.1 V
2SC4081 S
CFL ON: 3.0 V R820
10 k
D820
MA2S111
R822
R826
22 k
0.15
C821
R821
D810
C820 0.001 R823
1 k
MA2S077
47 12 k
5
1
4 3 4
C801 C822
2
IC903
0.0033 2 C802 150 P
TC7S02FU
0.001
3
5
1
R801
10 k
Q802
UMY1N TR
1.5 V
C63
IC14
0.1
M5222FP
R128
R157 R166
10
120 k 1 8 220 k
OUT1 VCC
2 7
IN1 OUT2
3 6
COM IN2
1 S 4 5
GND VC
C80
0.1
C86
R156 R149 1
33 k 2.2 k
R165
R161
C87
15 k
8.2 k
1
R113
R159 R112 R133
C90
82 k
33 k 33 k 180 k
0.0047
R164
10 k
1.5 V
C91 C81
C58 C97
0.1 0.1
0.1 0.1
C92
0.1
Q37
2SJ144 Y
3.0 V R108
Q31
1 M 0.6 V
2SC4081 S
R137
C82 R150
47 k
0.1 1.2 k
AMUTE
FMAF
VRC
VP
VCC
15V
4.5V
12V
CP1
C901
D901
DUTY
1SV288 220 P L901 10 H
C902
R904
39 P
R905
33 k
1 k
R902 R903
50 k 10 k
C934
R6 C933
4.7
10 k 0.1
C904
0.0068
C903
C905
0.01
3.3
R907 100 17
XSTH
XSTH
STH R908 100 18
STH
CKH2 R909 100 19
CKH2
CKH1 R910 100 20
CKH1
PCG2 R911 100 21
PCG2
PCG1 R912 100 22
PCG1
R913 100 23
HD
24
PANEL IC901
XSTV R914 100 25
XSTV LV4127W
STV R915 100 26
STV
CKV2 R916 100 27
CKV2
R917 100
CKV1 28
CKV1
29
XENB R918 100
XENB
R919 100 30
ENB
ENB
31
VSS2
R920 100 32
VD
R R921 100
G R923 100
B
R922 100
PCD
C922
0.1
15V
D18
15V
MA6S718
TGSTB
OSSTB
CK
DATA
Q19
DTC144EE
R127
Q18
18 k
DTA144EE
C71 R131
0.0022 10
R126
18 k
R119
180 k
6 5 4
C949
1
R123
D16
120 k
MA132WK
Q30 C69
1 2 3 0.01
XP6501 AB
C70
D17 0.01
C73 C72 R122
MA2S111 0.1
0.0047 180 k
R129
47 k
R140 R141 R125
R124
180 k 180 k 15 k
10 k
Q17
2SJ144 Y
C76
C77
R109
1.2 V 0.1
0.1
1 M
R153
47 k
L903 R906
10 H 220 C907
0.047
C906
0.47 R928
C908
180 k
L900 100 H 1
R959
R926
680 C900
33 k
C899 12 P
8 P
C910
470 P
C913 R929
C914
0.1 47 k
0.1
64
PWRST R931 15 k
63
FOADJ
62
PICT
61
C911 0.047
YIN C909
60
STARTUP 1
59 W915
CIN
58 C912 10
VREG
57
VXOIN
56
VXOOUT
55
APC
54
BLKLIM
53
COUT
52
RYIN
51
BYIN
50
SIGCENTER C916
49
C917
VCC1 C919 0.01 0.01
C920
0.01
0.068
R932
10 k
L904
10 H
C925
0.047 C929
C928
C930 0.01
0.01
10
C923 C924
0.047 0.047
L905
C926
C927 10 H
0.01
10
Q1
XP1210
3 4
2
1 5
1
OSC1 V1
Q2 2
OSC2 VD
UN9214 3
STB HD
4
CK FSC
5
DATA LPF
6
RST PHIN
7
L906 V2 P2
8
39 H VOUT P1
9
CHAL P0
R938
10
VIN GND
3.3 k
C935
C936
30 P C937 R939
33 P
IC902
1 1.2 k
M35017-001FP
(7 MHz)
C67 R116 C65
0.1 47 k 0.1
R117 R136
470 k 22 k
R120
180 k
R118 C66
R121 C68
15 k 0.1
470 k 0.018
R130
C74
R132
C93 15 k
0.1
10 k
0.018
VP
VCC
15V
12V
4.5V
L902
10 H
C931 C932
0.01 10
R927
47 k
D800 D801
(W915)
MA727 MA727
NTSC
JUMPER
PAL
18 P
C804
(X901)
X901 22
NTSC
CR-679
3.579545MHz
C947 PAL
2 P 4.433619MHz
W1
R810
0.15
Q50
UN9214
R937
15 k C809
47
Q51
C921
DTA144EE
0.22
IC801
C811
MB3776AFFV
0.1
8 1
7 2
6 3
5 4
R802
R803
1.2 k
330
4.5V
C812
0.0012
4.5V
12V
5V
R945
Q904
C938 R940 R943
10 k
20 0.01 1 k 2.2 k 2SC4081 S
19
18
TFT ON: 1.8 V
17
16
R946
Q903
15
C950 TFT ON: 0.9 V 4.7 k
14 R941
2SA1576 S
0.01
R942
13 100 k
1 k
12
11
C940
Q902
C952
0.01 TFT ON: 1.2 V
2SC4403 3 47 P
C939
0.01
TFT ON: 3.3 V
C941 Q203
0.0047
HAT1023R
8 1
7 2
6 3
5 4
R201
100 k
Q201
2SB1201 S
R204
D204
6.8
SB07-03C
R203
5.6 k
HV 1
DCK 40
VP
2
VCC
DUD 39
3
R3V 38
C107
RSSI 4
0.1
RXC 37
FMAF 5
TVIF5 36
CONVC 6
LVC 35
SDET 7
PSTB 34
AMAF 8
PCK 33
+3V
9
DCDC_C
PDA 32
SPG 10
Q806
+3V
2SA1588 GR 31
TVIF5
PGSTB 11
EXPSTB 30
TV MODE: 5.0 V
DBLOFF 12
HFC 29
TVC TVC
174MC 13
CLONE 28
+3V +3V
TRAC 14
ATT 27
R807
Q7
UHF3VC 15
47 k R809 R808
UN9214 INTSP 26
470 47 k
108MC 16
AFO 25
17
TV MODE: 4.4 V
WFM
24
FSET 18
5V
AM
23
VP 19
D804
C807
22
RB060L-40
56
VIDEO 20
T1
BGND 21
D802
MA727
VCC
D805
C805
RB060L-40
10
R806
39 k
R811
3.9 k
C808
56
R805
Q804
2 k
2SK2493
R804
1.2 k
4.5V
12V
5V
L907
C944
C945
10 H
0.01
10
C942
4.7
TFT ON: 1.7 V
C943
4.7
VIDEO
R944
100 k R947
100 k
Q42
XP4601
VP
BATV
6 5 4
VCC
D202
1 2 3
MA2S728
HV
TRAC
D201
RB060L-40 TRACC
C201
0.001
R967
100 k
R968
R202
15 k
6.8
+
C202 C203
—
0.001 0.001
D203
MA133
INTSP
1
CHGC 2
Q202
UN9214
COMPLETE VIEW