Icom IC-T7H Service Manual page 34

• 1F UNIT
VT: 0.72
VR: 0.72
VT: 0.72
VR: 0.72
J302
IMSA-9230B-1-05Z064-T
L303
VLV
5 LA-509
VLV
L302
4
0.82 H
R866 3
C313
2
6.8 k
ULV C312 0.001
1
27 P
R868 R867 +
680
3.3 k
D304
R319
MA2S077
C862 C861 C863
220 k
VSHIFT
+ 0.1 0.001 0.001
C864
1.5
C322
Q354
0.001
UN9210
VT: 0
VR: 3.4
VSHIFT
UT: 0.69
R364 UR: 0.69
C360
220 k
0.1
VMOD
R363 L304 L301
R362
220 k LA-508
0.82 H
150 k
C301 C302
Q854 UN9210
27 P
24 P
SHIFT
C860
UT: 1.80
0.1 UR: 0.77
UMOD UT: 3.5
D302
UR: 0
R863 330 k MA2S077
R864
R862
47 k
33 k C311
0.001
C379 C377
L354
Q356
4 P 3 P
2NDLO 0.82 H
2SC4081 S
C378
C374 C: 3.5
7 P C380
C: 0.65 9 P
27 P
R372
C376
L355
100 k
0.82 H 7 P
R371
C375
330 k
0.001
R374 10 k
L352 4.7 H L353
C851 C852
C373
4.7 H C372
0.1
0.1
0.001 0.001
1 20
VCC1 GND1
2 19
IN1 IN2
PLST
3 18
ENB VCC2
PLCK 4 17
CLK XB
PDA/UL 5 16
DATA XI
6 15
T1 XO
7 14
R365
LOK GND2
8 13
330
R370 CP1 CP2 X851
9 12
10 k FI1 FI2 CR-515
10 FO2 11
C367 FO1
C368
C366
47 P 47 P
47 P
C369 C370 C371
39 P
20 P 22 P
IC851 UPD3140GS
R368 R366
C361 C362
680 10 k
0.001 0.1
R367
1.5 k
Q355
2SK880 Y
+
C364
3.3
R369
100 k
C365
0.001
J901
HSJ1102-01-540
J902
HSJ1493-01-010
J903
HEC2711-01-020
S1
VT: 1.94
VR: 1.94
C315 Q305 2SC5108 Y R316
C324
2.5 P 47
0.001
R315 C: 2.82
R314 C318
220
C316
6.8 k 0.001
R312 C321 R318
0.001
100
6.8 k 0.001
J301
R321 IMSA-9230B-1-
C314 C319
100 05Z064-T
R313
2.5 P 0.75 P
100 R317 LOOUT LOOUT
1
47 k VCO3 VCO3
C320 2
D303 22 P 3
MA304 C317
4
0.001 Q306
Q304 2SC5108 Y 5
2SC5108 Y
R311 1 k
VT: 1.39
C325
VR: 1.39
0.001 C: 0.75
R320
UT: 2.30
220
R305 R306 R307
UR: 2.30
4.7 k 39 39
C304 C308 0.75 P
C307 C323
2.5 P
0.001
C305 0.001
R303
0.001
4.7 k
Q302
2SC5006
C303
R304
2.5 P
C306
68
0.001
D301 HVU350
Q301
R302
2SC5006
2.2 k
UT: 1.80
UR: 1.80
DUAL VCO BOARD
+
C865 C354 C855 + C355
0.001
0.001 22 22
R358
C: 3.0
100
C359
0.001
R360 C356
220 0.001
R359
47 k
C358
C859
0.001
0.001
C357
0.001
R361
Q352
VT: 0.7
47
UT: 0.75
2SC5107 O
VR: 0.7
UR: 0.8
Q853
+
UN9115
R373
47 k
Q353
D354
UN9115 MA132WA
Q357
C301
UN9115 0.001
+
C909
10
+3C
EXTMIC
SPE
R902
AFO
390
C901 INTSP
0.001
REMOTE
C906 C905 C904
C903
0.001
0.001 47 P 0.001
L900 3225 H
C: 13.2
D901 RB060L-40
L901
+
C908 C900
3225 H C907
0.001 C910
0.001 0.001
10
DIUD
DICK
AF
AFV
11 - 2
VT: 2.3
UT: 2.3 VT: 3.9
VR: 0 VR: 0
UR: 0
R858
D351 MA2S077
120
C856 D352 MA2S077
L801 R354
0.001
0.1 H R861 22 k
R859
Q351
100
22 k
R201
R357 R355 2SC5107 O
C858 100
15
33
0.001
C350 L201
C857 Q702
0.82 H
0.001
0.001
2SB1132 R
Q852 Q703
R356
VT: 0.7
15
UT: 0.7 2SC4403 3
2SD2216 S VT: 4.2 R208
VR: 0.7
UT: 4.2 100
UR: 0.8 C213
R352 VR: 0
C713
1.5 k UR: 0 0.001
0.001
D353
MA2S077
R709
+
4.7K
D702
TXC
MA133
C711
Q704
R702
2.2
C715 R706
UN9211 4.7 k
5 P 100
R701 4.7 k
L701
Q705
15 nH
D703
2SA1588 GR C716
MA2S111
0.001
TXSEL
R708
C701
100
0.001
R209
Q203
4.7 k
UN9210 C714
0.001
Q202
2SA1588 GR
UT: 3.9
UR: 0
R261
1 M
C234
R250
C235
0.001
0.15
0.001
C254
0.001
R251 R252
W5
68 k 47 k
C232
D250
0.001
MA8030H
C2360.001
Q250
2SC4081
TXC
R258
15 k
R259
C231
10 k R260
0.001
100
PSET
PREF
Q253
DTC114TU
R350
1 k
R351
39
C351
0.001
J904 IL-WX-30PB-VF84-B
LO EXTMIC
1 2
AF SPE
3 4
UMOD
INTSP
5 6
GND AFO
7 8
VMOD REMOTE
9 10
PLST TXSEL
11 12
PLCK DIUD
13 14
PDA/UL DICK
15 16
GND AFV
17 18
2NDLO PSET
19 20
BTVCC VTUNE
21 22
PREF LVCO
23 24
SHIFT +3C
25 26
TXC HVCO
27 28
VCC HV
29 30
C912 C914
0.001 0.001
VT: 12.4
UT: 12.5
VR: 13.2
UR: 13.2
L203 3225 H
Q201 2SC3356 R25
C207 18 P
C210 +
C206
10
W2 R202 L206
7 P
L202
150
18 nH C407
82 nH C403 R402
C212 L402
47 0.001
0.001 0.001 60 nH
R205
D201
15 K
Q402
MA2S077
C214
C404
0.001 2SK3075
R204 0.001
Q401
10
C209 D701
2SK3074
L403
R207
0.001 MA2S077
3.3 nH
4.7 k
R203 L401
C211 4.7 k 12 nH R401
C405
0.001 R403
100 27 P
330
C401
15 P
VT: 12.4
C707
C402
UT: 12.5
Q701 5 P
VR: 13.2 0.001
C406
2SC3356 R25 UR: 13.2
IN IN
1 0.001
GND
2
L702
3
L703 12 nH
VCC1 VCC1
C717
18 nH 4
VGG2
5 P 5
C709 L204
3225 H
0.001
R705 J201 IMSA-9230B-1-05Z003T
10 K
R704
R710
10
47
C727
0.001
+
C270 R281 R282 R284
+ 10 1 k 33
VT: 12.5 C101 C102 100 k
UT: 12.6
0.001 10 R278 R285
VR: 13.2
10 1 k
UR: 13.2
C268
C267 + R283
0.001
10 100 k
R267
15 k
R263
R262
10 k
22 k
1 8 Q255
2 7
2SB1462 R
6
3 R266
4 5
TBPS1R150K
R265 R264
IC250
2.2 k
4.7 k
NJM2904M
D251
MA8043 L
L13
C233 0.82 H
0.001
R728
47 k
VCC
C8
2 P
D2 D1
MA2S077
MA2S077
C554 L552
L551 C15
0.001
12 nH 12 nH 0.001
URF
GND
C13 1.5 P
J905
C553 C552
53264-0690
8 P 10 P
C14
4 P
5 3 1
D552 D551 C551
MA2S077 MA2S077
6 4 2 7 P
C736
0.001
L52 L51
56 nH
56 nH
VRF
C53
12 P
C51
C52
D52 D51
27 P 22 P
MA2S077 MA2S077
C913
0.001
C : COMMON
VT : VHF TX
UT : UHF TX
VR : VHF RX
UR : UHF RX
VCC2
R210
100
C215
L205 0.001
0.82 H
L404
25 nH
C216
L405
0.001 D202 MA2S077
21 nH
VOUT
C410
5
56 P
GND
4
C409
3
20 P
GND
2
UOUT UOUT
1
C412 C411
J202
C730 D723 D724
10 P 0.001
IMSA-9230B-1-05Z003T
0.001 MA2S077 MA2S077
L406
0.40-1.1-3TL L723
D722 L724
0.22 H
MP401
1SV271 0.22 H
2207 PA HEATSINK
PA
BOARD
C911
0.001
R721
R724
10
33
R726
C728
10 k
0.001
R727
150
Q204
UN921L
C724
HC725
0.001
R1 150
C24
C23
0.001
0.001
C7 C6
1 P
1 P
L6 L5
10 nH
10 nH
L1
0.15 H
L9 L7 C5
C3
L8
16 nH 14 nH 15 P 7 P
C9 1 P C1
C4 C2
C11 0.5 P
39 P 8 P
100 P
C732
C12 C10 0.001 L2
L3
9 P 8 P W1 1
30 nH 21 nH
J1
D725
2
L725 1SV271
R730
0.22 H
10
R731
CHASSIS
C733 150 C734
R732 C735
10 K 0.001 47 P 0.001 UNIT
C22 L12 L11 L10
0.001 47 nH 60 nH 39 nH
C20 C16
C18
2 P 2.5 P
5 P
C21 C19 C17
15 P
27P 22P