Tx-Rx Unit (X57-4660-21) - Kenwood TK-80 Service Manual

A B
TK-80
1

TX-RX UNIT (X57-4660-21)

Component side view (J72-0382-41)
TP504
CV
2
Q531
TC503
L546
L545
3
Q533
C683
TC504
D504
L548
L547
Q535
4
TC505
L550
L549
R675
C701 R673
VCO
R674
5
A500, A501, A502
Q510
+
+
+
Q509
+
6
R546
+
L508
C532
TP505
Q511
7
L509
Q512
8
C576 C578
R541
R589
9
C566
R575
10
22
23
L500
11
L501
33
34
DDS1
A503
12
TC501
13
+V
+
72
14
C D
PC BOARD
W3
CN501
D61
LO1
D60
C679
D
G
R544
S C677
R542
C676 R662 C678
C706
L507
C518 C519
C674
L506
D C689
G
C516 C517
S C687
D1
C686 R666 C688
L505
C515 C705
D2
L504
C684
D3
C514
D4
D C699
R540 R539
G
S C697
C513
R696 R670 C698 Q507
R537 R536
C11
C694
C703
C704
R676
Q513
R565
+
L544
C544
1 8
IC503
4 5
C545
C543
L512
TP502
C546
L515
L514
R582
R581
Q515
L513
R690
L530
C588 C585
5 4
IC505
8 1
+
C584
L516
R604 R602
L542
+
C500
12 TP501
11
IC500
R689
1
C651
44
L543
L502
C652
L503
C507
TCXO
SO-2
(OPTION)
OUT
R682 R683
E F
J4 J3
ALC RELAY
R312
R313
D5
R2
D7
L8
L7
B1
C16
L5
D9
+
L11
R10
B2
D6
TP4
L14
R12
C3
D11
B3
C1
L17
D13
R14
B4
D15
L20
R16
RED
B5
D17
CN1
L23
RAT
R18
+
B6
D51
L26
R169 R168
D19
R20
B7
D21
L29
R22
L72
B8
+
R302
9
CN19
L73
R301
DRV
R300
L74
R299
BLACK
16
TC502
R609 R611
L531
R607 R612
Q521
X502
C609
R597
L532
L533
TP506
R606
W2
Q518 CN502
LO2
C621 R623
R624
+
C623
L535
R626
C590
Q523
R681
C616 C617
L536
C618 C619
C620 R621
R622
22 12
23 11
IC501
CF500
33 1 8A
34 44
DDS2
R679
5A
A504
C632
R628
IC508
4 3 1 CAR
5 1 L539
W4
2 GND
D500
VDLY
CN503
C633
D501 TP503
RTK
G H
J6
KEY
R906 C910
5 4
IC900
R904
8 1
+
C908
+
C903
C901
C909
C900
D8
C206
R8
R161
D50
L70 VR3
D10
R162
R163
L71 C207
D23
L32
L33
D12 C74
D14
C71
D16
L41
L37
C83
D18
L38
R37
C89
CN4
1 IN
C88 R36
D20
2 GND
L42
L39
D22
C86
D25
L43
C97
R306
8
R305
R304
R303
IC10
RAB
AIPB
R327
1
14S
RATB
AIP
Q3
TP1
D69
D70
C348
D71
Q61
R316
+
D73
Q67
R340
R400 R399
C355
R345 R344 R343
VSFM
R380
R379
C357
R377
8A
VSRM
D81
I J
J2
ACC2
Q902
8F
+
VOXS Q81
5A
P
1 14
RTK
IC901
P
7 8
R918
SS
5A V
Q901
PSQ
C199
L69
VR2
C196
R150
L66
TP9 C112
L67
L68
L46
L65
C110
C109
L36
L45 L64
C108
W3
L35 L85
TP8
CN2
LO1 D4
D4
R143
R142
R13
L63
R148
L61
CN3
LO2
D45
L48
W2
R55
R54
R51
R48
C102
C104
L44 L49
R52
R50
C103
RXB
TXB
L5
C12
C114 C352 R338 C353
R65
R64 R334 R337 C12
K2
TXB
8F
8F
+
5 1
Q69
+
4 3
R333
R329
R325
R322
C346
Q62
R324
R331
+ +
C344
Q63
R323
AMB
R414
TXB
14AG
14AF
D80
R362
C371
L81
14S
RBK
NBS
+ +
K3
8A
C339
GND 5A
J7