Tx-Rx Unit (X57-6142-71) (B/2) - Kenwood TK-785 Service Manual

A B C D
TK-785 K,E
PC BOARD VIEWS
1
J72-0724-12 B/2
2
D511
PSW
Q511
3
4
J501
PTT/
CM MIC TXD PSB
5
HOOK/
ME E BLC
RXD
6
Component side
Pattern 1
Pattern 2
Pattern 3
7
Pattern 4
Foil side
8
C501 C726 R702
R505 R723
9
D505
L501
SB
R506 R513
C502
C503
D503
D504
C528
10
SPO
GND
Q508 X501
C601
Q509
11
R668
R674 R722
R667
R680
MPTT PTT GND
12 C607
J72-0724-12 B/2
Component side
Pattern 1
13
Pattern 2
Pattern 3
Pattern 4
59
Foil side
14
E F G H
D512
R710
C527 C710
R526
R713
R525
5 4
IC501
VOL
8 1 R502
UP
C513
C506
R726
R552
C535 C547
1 8
IC503
VOL
4 5
DN C540
R545
R551 R548
C574
D513
A
C721
C582
TXAI
C577
TXAO
R730
R577
+
C560
R566
C562
C556 R555
C554
C578 C563 R562
C550
C549
22 12
23 11
+
C548
C565
R544 R542
IC504
R550
C531 Q502
C552
C533
33 1
R536
34
44
R522
RXAI
C514
R521
RXAO
C515
C516 R518
R520
I J K L
R514
C712 R517
R510
C518
1
5
1 8 1
IC710
IC502
3 4
C524 R572
4 5
IC508
R531
R714
R507
8
C510 +
R508 R523
D510 C511 C714
C575
IC509
R612 C593
D520
D514
B C
Ref. No. Address
IC501
IC502
IC503
C623
C625
C724
R564 C570 IC513
8 7
IC506
C602 C609
14 1
C633
R673
Ref. No. Address Ref. No. Address
IC504 10G IC511
IC506 11J IC512
IC507 9E IC513
60
M N O P
TX-RX UNIT (X57-6142-71) (B/2) Component side view
C583
L507
16
R682
C592
9
D515
D
Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address
2G IC508 2M IC710 2I D509 3I D512
2J IC509 4L Q503 3H D510 3I D513
4H IC510 3P Q511 3C D511 2C D514
TX-RX UNIT (X57-6142-71) (B/2) Foil side view
C608
R628
C610 R676
R629
R631
R633
R635
R638
R640
R621 R642
R644
R666
R619
25
26
R616
R665
R664
R614
R663
R662
R611
R661
R660
R659
R670 R658
R657
R656
R655
R675
R706
R654
R705
R653
R652
R651
R650
R649
R647
50
51
5 4
IC512
8 1
Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address
10Q IC711 8G Q507 11J Q510 9S Q515
11O Q501 10B Q508 11C Q512 11A D501
10L Q502 11I Q509 11C Q513 11B D502
Q R S
D517
SYS
UP
SYS
DN
D516
CALL
Ref. No. Address Ref. No. Address
2E D515 5N D520 4L
5E D516 5R
5I D517 2R
X502
C596
Q510
1
C603
100
R584
IC511 R603
R602
R601
R600
R599
R598
R597
R596
9 5 R 5
R594
R593
76
75
Ref. No. Address Ref. No. Address
12A D503 10B D507 10B
8D D504 9C D508 9G
9D D505 9B D518 12B