Kenwood TK-980 Service Manual page 31

A B C D
TK-980/981
PC BOARD
1
TX-RX UNIT : CONTROL SECTION (X57-6520-XX)(B/2) -12 : TK-980 -13 : TK-981
Component side view (J79-0294-09 B/2)
2
PSW
3
Q511
4
J501
5
PTT/
CM M IC PS B
TX D
H O O K /
M E E B LC
RX D
6
J79-0294-09 (B/2)
7
Foil side view (J79-0294-09 B/2)
8
D501
C501
R505
9
D505
D504
L501 MUTE
SB
R506 R513
D503
C503
10
C528
SPO
D507
Q501
GND
Q508
X501
C601
Q513
Q509
11
R668
R674 R722
R667
R680
MPTT PTT GND
12
C607
J79-0294-09 (B/2)
13
14
E F G H
D512
C527
R526
R525
5 4
IC501
VOL
8 1 R502
UP
C513
C506
R726
Q503
R552
C535 C547
1
8
IC503
VOL
4 5
DN
C540 R545
R551
R548
C574
D513
A
MON
R720
C582
TXAI
IC711
C577
TXAO
R577
+
C560
IC507
D508
R566
C562
C556
C554 R555 R562
C563
C578
C550
22
12 C549
23 11
+ C548
R542
R544
IC504
R550
C531
C552
C533
33 1
R536
34 44
R522
RXAI
C514
R521
RXAO
C515
C516 R518
R520
I J K L
TX-RX UNIT : CONTROL SECTION (X57-6520-XX)(B/2) -12 : TK-980 -13 : TK-981
C518
8
1 1
IC502
C524 R572
4 5
R531 IC508
R507
+ 8
C510
R508 R523
D509
D510 C511 C714
C575
IC509
R612 C593
D520
D514
B
C
Ref No. Address Ref No. Address
IC501 2G IC510
IC502 3 J Q503
IC503 4G Q511
IC508 3 L D509
IC509 4 K D510
CN502
C623
C625
C628
C565
R564 C570
IC513
8 7
IC506
C602 C609
14
1
C633
Q507 R673
CN501
Ref No. Address
IC504 1 F 1
IC506 11I
IC507 9 E
IC511 10P
IC512 11N
M N O
PC BOARD
Component side view (J79-0294-09 B/2)
C583
16 L507
R682
C592
9
IC510
D515
D
Ref No. Address Ref No. Address
3O D511 3 C D516 5 Q
4 H D512 2E D517 2Q
3C D513 5E D520 5 K
3 H D514 5I
3I D515 5M
Foil side view (J79-0294-09 B/2)
C608
C610 R676
R633
25
R616 26
R670
R658
R675
IC511
R706
R705
50
5 4 51
IC512
8 1
Ref No. Address Ref No. Address Ref No. Address Ref No. Address
IC513 10L Q508 11C Q515 12A D505 9 B
IC711 8F Q509 11C D501 8C D507 10 B
Q501 10B Q510 9R D502 9D D508 9G
Q502 11H Q512 11A D503 10A D518 12A
Q507 11I Q513 11B D504 10 C
P Q R S
TK-980/981
1
D517
2
SYS
UP
3
4
SYS
DN
D516 5
SCN
6
Component side
Layer 1
Layer 2
Layer 3
7
Layer 4
Foil side
8
X502
C596
Q510
9
1
C603
100
R584
10
76 11
75
12
Component side
Layer 1
Layer 2
Layer 3 13
Layer 4
Foil side
14