76
TH-D72A/D72E
SCHEMATIC DIAGRAM
X57-784 (C/3) 3/8
K
L
M
N
O
2.8V
1.1V
1.8V
3.9V
2.5V
0.7V
3.3V
3.3V
0.7V
2.6V
3.3V
0.9V
2.7V
AM:4.5V
AM:1.7V
AM:2.2V
AM:2.2V
3.2V
0.8V
2.6V
3.2V
-t
-t
LE_A
TR_DATA
33CA
TR_CLOCK
PS_A
33RB
45RVAM
33RB
AGC
SMB
SMA
33CA
33CA
33CA
45C
SQB
SQA
33CA
45C
33CA
R414
0
R413
180
R410
470
C417
12p
R406
R405
R403
100
R402
270k
C416
12p
R411
180
C418
0.1u
R397
0
R412
0
MCH3914(7)-H
Q435
C450
0.22u
35
C448
4.7u
10
C471
15p
C464
82p
D435
1SV325F
D434
1SV325F
R465
10k
C386
0.1u
C384
100p
R383
1.5k
C374
1000p
R386
330k
C377
180p
C376
180p
R377
3.3k
C373
100p
R380
330k
C383
0.1u
C403
1000p
2SC4617(R)
Q356
2SC4617(R)
Q354
2SC4617(R)
Q352
D351
RB706F-40
C369
0.1u
C371
1u
C42
0.1u
R19
3.3k
C24
1000p
C19
0.1u
R23
2.2k
C494
470p
R473
10k
R455
22
C419
0.1u
R409
470
C415
0.1u
C408
0.1u
C380
180p
R385
330k
C381
180p
R381
3.3k
C379
1000p
R391
330k
C378
100p
R389
1.5k
C390
0.1u
C409
1000p
R390
2.7k
C393
0.1u
C405
0.1u
C414
0.1u
C412
0.1u
R392
2.7k
C398
0.1u
C391
100p
C395
0.1u
C407
R399
100
C392
0.1u
R387
4.7k
R382
5.6k
C382
0.1u
R378
10k
C372
0.1u
C397
0.1u
R375
330k
R373
1k
R368
1k
R371
330k
R376
560
C370
0.1u
C367
0.1u
R369
560
C368
1u
C366
0.1u
R366
3.3k
R365
10k
R363
220
R364
33
C364
0.1u
C361
56p
C358
1000p
R359
47k
R358
100k
C356
1000p
D352
HSC277
C363
0.01u
R362
100k
C362
1000p
2SK1830F
Q353
R356
1k
R357
1k
R367
10k
R372
10k
R353
100k
R352
15k
R351
18k
2SK1830F
Q355
R439
100k
R431
22
C433
0.01u
C435
6p
C434
3p
C432
0.1u
R436
1k
C445
0.22u
3
5
R442
0
R441
0
R444
680
D433
MA2S077G
D432
MA2S077G
R446
680
R445
560
C455
1000p
R448
10k
C472
15p
C475
1000p
R456
270
C476
0.5p
47
R462
0
R460
8.2k
R459
10k
R463
1k
C482
1000p
C481
22p
C484
5p
R461
100
C479
1000p
C480
0.1u
C477
1000p
R451
0
R453
15k
C473
5p
C446
1000p
C440
1000p
C442
1000p
C444
1000p
R443
56
R468
100
C486
0.01u
C490
470p
R466
100
C492
1000p
R449
3.3k
2SC4617(R)
Q433
D436
MA2S111-F
C470
1000p
C459
1000p
C469
1000p
C462
470p
C406
10u
1
0
C411
10u
10
R401
22
R398
22
R361
100k
R393
100k
R384 470k
2SC4649(N,P)
Q357
R388
100
C375
0.01u
IC351 TC75W51FK(F)
1
oUTA
2
IN-A
3
IN+A
4V
S
S
5
IN+B
6
IN-B
7
oUTB
8
VDD
IC352
TC7W53FK(F)
1
CoMMoN
2
INH
3
VEE
4
GND
5
A
6
CH1
7
CH0
8
VCC
C387
1u
C396
1u
C357
0.1u
C351
0.1u
C352
0.1u
C355
0.1u
C353
0.1u
C360
1u
C436
0.01u
C385
22p
C388
5p
C394
22p
C399
9p
CP14
1k
L432
18n
L433
100n
L435
10u
R360
0
C466
22u
C431
470p
2SC5488A-H
Q438
R469
270
R470
100
C489
10p
C491
0.01u
C493
470p
C485
22p
C483
220p
L444
10n
D437
HSC277
2SC5488A-H
Q437
2SC5488A-H
Q434
2SC5488A-H
Q436
R464
8.2k
C447
7p
C449
1p
C451
5p
C454
3p
C452
22p
C465
12p
R454
8.2k
L431
390n
R432
0
IC431
MB15E03SL-E1
1
oSCIN
2
oSCoUT
3V
P
4V
C
C
5D
o
6G
N
D
7
XFIN
8
FIN
9
CLoCK
10
DATA
11
LE
12
PS
13
ZC
14
LD/FoUT
15
P
16
R
R458
47
CN431
C460
27p
C463
100p
C458
9p
C461
10p
L438
39n
L436
27n
L434
12n
C456
5p
C457
7p
R452
100
R447
680
C467
1p
R370
100
R374
100
C39
1000p
R682
100k
C684
0.1u
R120
10
R125
1
0
R553
1.5k
L445
47n
L443
82n
C488
0.1u
L441
10u
L442
10u
L440
22n
L437
10u
L439
6.8n
C498
3p
L352
330n
L351
330n
C535
1000p
C389
0.1u
C400
0.1u
CN356
X351
R394
5.6k
R395
0
C402
18p
C404
9p
CF352
CF351
CD351
CD352
IC354
NJM2591V
1
oSCIN
2
oSCoUT
3
MIXoUT
4
V+
5
IFIN
6
DEC
7
FILoUT
8
FILIN
9
AFoUT
10
QUAD
11
IFoUT
12
RSSI
13
NoISEDET
14
NoISEREC
15
GND
16
MIXIN
IC353
NJM2591V
1
oSCIN
2
oSCoUT
3
MIXoUT
4
V+
5
IFIN
6
DEC
7
FILoUT
8
FILIN
9
AFoUT
10
QUAD
11
IFoUT
12
RSSI
13
NoISEDET
14
NoISEREC
15
GND
16
MIXIN
XF351
XF352
C499
22p
C401
0.1u
R437
0
R438
0
R440
1k
C439
10u 10
C453
0.22u
3
5
C423
0.5p
C424
0.5p
C425
1.5p
L12
820n
L5
820n
C438
470p
C437
10u
10
TH355
12
R396
220k
R415
220k
TH356
1
2
L420
1.2u
L421
1.2u
X431
2SC4617(S)
Q359
2SC4617(S)
Q358
R417
100k
R416
820k
R418
820k
R419
120k
L447
22n
L448
27n
C495
10p
C496
8p
C497
10p
L446
27n
C487
470p
A_IF1
49.95MHz
VCO/PLL_A
16.8MHz
50.400MHz
45.505MHz
455kHz
450kHz
CV_A
LO2_A
VC
GND
VCC
oUTPUT
VHF VCO
A BAND IF
B BAND IF
SPEED UP
D432,D433
FREQUENCY
CONTROL
D434,435
AMP
Q433
Q435
OSCILLATOR
AMP
RF
AMP
RF
AMP
RF
RF AMP
Q434
RF AMP
IF AMP
SWITCH
AMP
AMP
SWITCH
IF AMP
ANALOG
IC354
OP AMP
IC353
FM SYSTEM
PLL SYSTEM
IC431
SWITCH
D436
RF SWITCH
D437
B_IF1
45.05MHz
DET B
DET A
REF_A
DET A
LDB
LDB
LDA
+B
45RUA
+B
SPEED UP
CURRENT
STEERING
SWITCH
FM SYSTEM
0
270k
33CRF
AMP
33CRF
TX-RX UNIT (X57-784X-XX) (C/3) : TX-RX SECTION