Icom IC-T2H Service Manual page 25

T5
DS2
LNJ310M6URA
C256 TX: 5V
0.001 RX: 0V
R183
330
DS3
LNJ310M6URA
Q25
2SC4081
R204
DS4
15 k
LNJ808R8ERA
R205 R155
15 k 470
DS1
LM-1462B
75 COM1 1
SEG40
P97/SEG40 COM4
COM2 2
P96/SEG39 74 SEG39
COM3
73 COM3 3
SEG38
P95/SEG38 COM2
72 SEG37 COM4 4
P94/SEG37 COM1
SEG29 5
71 SEG1
P93/SEG36
6
SEG30
70 SEG35 SEG2
P92/SEG35
SEG31 7
SEG3
69 SEG34
P91/SEG34
SEG33
8
SEG4
68 SEG33
P90/SEG33
SEG34 9
SEG5
67
P87/SEG32
SEG36 10
SEG6
66 SEG31
P86/SEG31
SEG37 11
SEG7
65 SEG30
P85/SEG30 SEG38 12
SEG8
64 SEG29 13
P84/SEG29 SEG39
SEG9
SEG40 14
63 SEG10
P83/SEG28
R287
SEG41 15
1 k
62 CTDA2 SEG11
P82/SEG27
SEG42 16
R286 1 k SEG12
61 CTDA1
P81/SEG26
SEG43 17
R285 SEG13
1 k CTDA0
P80/SEG25 60
SEG44 18
SEG14
R245 22 k
59 T4/PWR
DA05
P77/SEG24 SEG45 19
SEG15
R246 47 k
58 DA04 SEG46 20
P76/SEG23 SEG16
R247 82 k 21
57 DA03 SEG47
P75/SEG22 SEG17
R248 180 k SEG48 22
56 DA02 SEG18
P74/SEG21
330 k SEG49
R249 23 SEG19
55 DA01
P73/SEG20
SEG50 24
SEG20
R258 680 k
54 DA00
P72/SEG19
SEG51 25
SEG21
53 AFON
P71/SEG18 26
SEG52
SEG22
R284 1 k
52 LIGHT
P70/SEG17 27
COM1
T5C
51 28
P67/SEG16
COM2
29
R236
COM3
1 k
30
TXC
COM4
R237
100 k
R257
1 k
RMUT
MMUT
VCC
T5
S5
CLV
CLV R186
C234
0.001
C233
0.001
IC1
L21 µPD3140GS
4.7 µH
W10
1 20
VCC1 GND1
2 19
IN1 IN2
PLST 3 18
ENB
VCC2
SCK 17
4 XB
CLK
SO 5 16
DATA XI
6 15
T1 XO
14
UNLK 7
LOK GND2
13
8 CP2
CP1 R45
9 12 150
FI1
FI2
X1
10 11
FO1 FO2
CR-514
C56
0.1
C68
C54
C64
0.001
20p 22 p
2LO
TX: 0V
RX: 5.0V
R5
S5
R84
390
C51 C65 C67 R85
0.001 4 p 0.001 1 k
IC2
TA31136FN (D)
F12
1
CFWM450E
C53 C66 OSCIN
2 p 10 p
L25
L13 2
OSCOUT
1.5 µH 1.5 µH O I
3
MIXOUT
4
VCC
5
IFIN
R90
C123
C121 6
NTCCF20123NH 153KCT DEC
0.001 470 p
7
FILOUT
R88 8
FILIN
220 k
R86
R91 R87 82 k
1.5 k
15 k C120
C118
R92 0.1
R262
C119 0.01
R89 RV-152 C122
15 k
470 p
22 k 1
C272
0.01
VCC
R5
S5
5V
IC3c
R131
470
NJM2902V
C132
R294
0.0022
10
10 k
+
+
C154 9
Q17
10 -
2SB1462
R295 R296
R261 R104
1 k 1 k
1 k 100 k R105
100
VCC
R108
T5
390 k
C133
R5 C147
R130 0.1
0.1 R297
S5
100 k
1 k
5V
MIC
VOL IN
VOLOUT
AF OUT
EMIC
Q34
2SK880
5.0V
VCC
T5
R298
S5
22
47 k
+
C48
1.5
R28
VCO BOARD
100
2.9V
Q8 C39
R27
0.001
220
2SC4226
C46
C37
0.001
1 p
L11 C33
4.7V LB-312 0.001
R26
R151
6.8 k
47 k C34
J1
0.5 p
L12
2.4V
VCOOUT 0.82 µH
5
S5 C36
4
R33
0.001
1.5 k GND
3 R24
C45
R32 SHIFT 220
2 0.001
4.7 k
LV
1
C40 R25
C41 C35
+ + 6.8 k
D6 27 p 1 p 0.001
MA77
C47
D5 C38
0.1 R29 HVU350 Q7
R34
1.5 k 1 p
680
TX: 5.0V C44 2SC4226
C218 C300
0.001
0.001 6.8 RX: 0V
C63 C285
C211 0.7V
39 p R30 0.001 R280
0.1
100 k 27
Q32
UN521D
X4 CDBCA450CX24
TX: 0V
R77
TX: 0V
470 RX: 4.9V
R82 RX: 3.4V
C117 R81 Q13
R242 1.2 k
0.001 22 k 470 FI1
W1 2SK360IG
FL-251
16
MIXIN
C279
15 R76 C106
GND
82 p
2.2 k 15 p
C110
N-REC 14
0.001
13
N-DET L22
1.8 µH L20
12 1.8 µH
RSSI
11 C116
IFOUT
C108
10 p
10
QUAD 0.01
C111 C107
R79
9 0.001 0.001
AFOUT 1 k
R80
R83
82 k
470
TX: 0V C105
C114 C113 C112
0.001
0.001 0.001 0.001 RX: 0.7V
Q14
2SC4215
VCC
R5
5V
R166 R167
100 k 100 k
R95
C125
390 k
0.0033
C124
0.01
6
-
7 1
14
C217 C126 I/O VDD
0.012 5
0.1 + 2
13
8 O/I CONT.A
3
12
O/I CONT.D
IC3b
C134 4 11
I/O
I/O
120 p NJM2902V
5
CONT.B 10
O/I
6
9
CONT.C O/I
R176 R93
R94 R96 7 8
5.6 k 12 k VEE I/O
560 k 47 k
C128
1
IC4
R109
C131
10 k BU4066BCFV
0.01
VOL IN
MAIN UNIT
R161
0.15
VCC
R3
Q28 1 k
R21
100 TX: 3.8V
2SC4081
R238
RX: 0V
15 R13
4.5V
R162
R23 39
1 k
3 2 1
150 R15
L32
100
56 nH
Q5
C32
R20 2SC4226
R22 0.001
47 k
27 k 4 5 6
R239
L10
1 k
68 nH C24
R163 Q9
0.001
2.9V 15 k
XP6401
C30 L8
C31
18 p 56 nH
0.001
C10
C259
R2
C26 0.001
180 p
0.7V 10 k
0.001
D3
MA77 C22 L30
R12 56 nH
15 p
2.7 k
R18
Q4
C25 R16
18 k
27 p C281
Q6 270
2SC4403
15 p
2SC4226
C28
R240
0.001 TX: 1.1V
100
0.7V
470 [EUR, UK, RX: 0V
C290
C23 R10
ITA, USA] 0.22
R11
0.001 10
1.5 k
TX: 0.8V
RX: 0.7V TX: 3.2V
Q3
RX: 1.2V
L31 D4
2SC3356
39 nH MA77
1LD
L35 0.1 µH
TX: 0V
R69
[EUR, UK,
560 RX: 2.8V
ITA, USA]
1.5 k [EUR, UK, ITA, USA]
TX: 0V TX:
R61
R68 68
330 RX: 0V RX: 2.8V
Q12
R58
C99
22
2SK360IG
0.001
C102
0.001 C94
C260 L26
15 p [EUR, UK, ITA, USA] 0.5 p 0.001
56 nH
L19
D11 D10
LS-523
D12 HVU350 L18 HVU350
HVU350 LS-523
0V
R59
C236 15
R71 C85
C92 R243 C90
3 p
56 39 p
47 p 100 k 0.001 C87
R64
R66
0.001 L17
100 k
100 k
22 nH
R62
C97 C96
R70
100 k
0.75 p 47 p
2.2 k
C95
0.001
S5
R115
R97 120 k
180 k
R99 R178
6.8 k 4.7 k
R98 C135
C212
180 k 220 p
0.01
Q16
R114
R267 XP6501
R107
47 k R117
6.8 k
180 k + 1.5 k
14 R120
13
15 k
C213 12
-
0.1
R118
R119
IC3d 10 k
R169 RV-110
8.2 k NJM2902V
+
C138
R112 R159 R116
1M
100 k 1 k
C136 C137
R268 R269
R168 0.0022
0.047 12 k
22 k C129
10 k
15
R100
1.8 k
AFON
T5
C8 L3 L2 L1
0.001 60 nH 60 nH 60 nH
1
J1
R160
120
C6 C4 C2
4 p 7 p 2 p
+ C21 C20
47 0.001
CHASSIS
C7
C5 C3 C1
15 p
22 p 18 p 7 p UNIT
C204
L6 0.001 L24
0.82 µH
R266
47 nH
C19
150
L5
0.001
25 nH
C14 L4
C15
0.001 14.3 nH
33 p
Q2
C205
2SK3074 0.001
L33
33 nH
D1
C27 C11
MA77
33 p 56 p
R7
C298
R5
R9 330
33 p
47
56
Q1
2SK3075
C17 R292
C13
0.001 56
0.001
+
C291
1
Q37
DTA144EU
S5
R46
56
0V C179
0.01
R210
R48
R49 1 k
Q29 220 68 k C69
0.001 C73
2SC4226
0.1
R52
L16 L15
C79 C80 1M
39 p 39 p 28 nH 60 nH
C70
5 p R53
D32 10 k
4 2
C81
HVU131TRF
C71 –
150 p 1
R54
0.001
3 180 k
+
D8
R47
HVU131TRF C77 C76 11 R264
R55
120 L14 22 p
18 p 330 k
1 k
82 nH
C78
3 p C75
TX: 0V
IC3a 0.01
C243
RX: 0.8V
NJM2902V 0.001
VCC
Q15 TX: 0V (SQL. open)
RX: 0V (SQL. close)
2SB1201
C153
C141 C295 IC5 TA7368F
0.001 0.001 220
1 10 +
R122
NC
POUT
1.8 k
2 9
6 5 VCC
4 PWGND
8
3 NC
PREGND
4 VIN
7
PHASE
5 6
RIPPLE NF
1 2 3
R128
R127
R126 12 k 10
10
+ R121 + C146 +
R123
C152
1 k 0.001
4.7 k C150
3.3 C149 0.1
10
0.1
C151
C139 C140 C145
47 p
0.001 0.001 100
C220
0.1
VOL OUT
AF OUT
COMPLETE VIEW
2