Kenwood TK-290 Service Manual page 54

A B C D
TK-290
PC BOARD VIEW
1
TX-RX UNIT (X57-5390-10) Component side view
2
3
4
5
6
TP5
7
TP4
E
8
9
J72-0519-32
Ref No. Address Ref No. Address Ref No. Address
IC2 6G IC602 8J Q13 4R
10
IC3 5G IC603 8K Q400 9G
IC4 7F IC604 8L Q401 9F
IC6 7H IC605 6J Q402 9H
IC7 4R IC606 8M Q403 4M
11 IC400 5H IC607 6M Q404 4M
IC402 8G Q2 6H Q405 9G
IC403 4H Q6 3N Q406 9I
IC404 3H Q7 4R Q408 6R
IC405 5H Q8 3P Q409 6R
12
IC600 4K Q9 3R Q410 6R
IC601 5J Q10 3R Q411 6Q
13
55
14
E F G H
C471 C467
DATI CODE4
1
C466
C469
CODE3
DATO
C465
C470
TCNT CODE2 IC404
C464
CODE1
STONE
C462
8
AUDIH TXOUT
C461
1
E RXOUT
C468
MUTE NC
C456 IC403
SCALL E
C457
PTTIO
AUX
8
C458
CLR/
KEY
C (AUX)
R481 1
MAND RXAEN
RXIN
EMERG
IC405
BUSY TXIN
+V
PTT 8
R470
A+
1
9 8
R471
R449
IC400
C472
IC3
+
8
1
16
R476
C31
+
R12
+ C100 +
C15
R13
5 4
4 3
IC4
IC6
8 1
5
1
+ +
C23
+ C14 CN405
R75
R407 L401
C429 C423
+
C425
C436
R472 C413
C414
Q400
C416
1
5 1 R400
5
5 1 R402
3 2
Q402
Q401
3 2
R405
5 1
4
C430
3
R450 C421
R411
3 2
Q405
Ref No. Address
DTA114EE 2SC4617
Q601 5L
DTA123JE 2SC4619
DTA144EE 2SC5110
Q602 4M
DTC114EE
D4 7I
DTC144EE
D8 3N
2SC4215
D9 4Q
D400 8H
D402 6P
D403 7P
FP210
D409 6R
D601 4M
I J K L
16
E
1 33
CN401
9
16
TP1
C610
R414 C656
9
R652
16
R653
C473
+
C655
R663
9
C602 C608 R616
16
22
R618
23
9
TP2
X600
R672
R671
R670
33
C34
34
R629
R623
R602
R622 C633 R645 C632
C603 R611
R624
C606 R614
13 12
R628
R609
C665
5
IC603
+
8
R605
C435
R621 R626 R619
R669
C619
24 1
R615
TP6 C660 +
R677
E
2SB1132 IMN10 2SB798
DA221 MA742 1SS301 2SK1215
HSM88AS
56
M N O P
Q6
R38 C59 B
C49 R36
R50 Q8 C234 R215
C
R40
R53
E
R404
C56
C63
R408
C62
C66
L23
D8
C70
IN
C71
D601
Vcont
C666 C76
C652
C78
R659 Vcc
C79
C646
C649 R661
C648
C647
12
11
R658
D402
R655
IC607
R654
R435
C636
1
44
R649
R439
C634
C400 R413
D403
NC
RXD
OUT
TXD
5M
E
R666
(DET)
REM
4 PTT
R636 EME
EMC
R648
MSW
R637
1 SP–
C631
SP+
IC606
R638 SSW
R644
C411
R646
UMC4 UMG3N 2SC4988
2SJ517
2SJ144 UPA572T 3SK274*J
Q R S
TP3
Q10
E
R67 R61
+
C73
R65
R478
Q9
L10 R495
E
R58
C60
R56
D9 S
D
G
C54
Q7
5M
BLED
TXLED
LAMP
R922 DAT
CLK
R44 R45
LCDCS
Q7
R443
R42 Q6
KEY2
TP9 TP8
TGL
R41
PWSW
PWSW
R458 C476 C475 B+
B+
Q408 5CM
VOL
Q409
DGND
Q411 CH B
CH C
C478 R457 CH A
E
CH D
R456
C
D409
R445
R436 B
Q410
TP7
E
E
GND GND
ANT
Component side
Pattern 1
Pattern 2
Pattern 3
Pattern 4
Pattern 5
Pattern 6
Foil side