Kenwood TK-280 Service Manual page 46

A B C D
TK-280
PC BOARD VIEW
1
2
DISPLAY UNIT (X54-3210-XX) (-10) : K, K2, M (-11) : K3, K4 Foil Side View
3
4
5
6
7
8
9
X54-3210-XX (A/2)
J72-0517-12
10
2SC4617
11
B
E
C
2SB1132
12
E
B C
13
47
14
E F G H
CN300
SB R306
CP300 AM
R325
D320
R324
Q301
1 6
5M
C340 R331
3 4
R332
1
C318
1 16
Q310
IC300
IC301
8
8 9
Q305
D318 D315
B C E
R319
D304
R336
Q307
R317
R320
E
C308
C
R321
B
2SB798 2SJ243 MC74HC4017F
2SK1824
B
C
E
UPA672T
TDA7053AT
9
16
8
1
I J K
CN303
X54-3210-XX (B/2)
J72-0517-12
R301
R311 R312
L309
R338
MSW
L308
R340
R314
R341
16
9
SP+
L301
SP–
L300
Q309
R326
L303
CS R337
C323
C324
CN304
C325
C322
C321
48
L M N O
D321
R300
R302
EMC
R304
CN301
R303
R305
C302
Q300
SSW
C331 C328
ME
PTT
AUX
+MIC
Q303
Q302
P Q R S
DISPLAY UNIT
(X54-3210-XX)
R e . f N . o A d d e r s s
D 3 0 0 6 L
D 3 0 2 8 G
D 3 0 3 8 H
D 3 0 4 9 H
D 3 1 5 8 F
D 3 1 6 8 G
D 3 1 7 8 F
D 3 1 8 8 F
D 3 1 9 5 K
D 3 2 0 6 H
C I 3 0 0 7 H
C I 3 0 1 7 F
Q 3 0 0 5 N
S300
Q 3 0 1 6 H
Q 3 0 2 1 0 P
Q 3 0 3 9 P
Q 3 0 4 9 G
Q 3 0 5 8 H
Q 3 0 6 1 0 H
Q 3 0 7 1 0 G
Q 3 0 8 6 G
Q 3 0 9 I 9
R310
C305
R307
Component side
Pattern 1
Pattern 2
Pattern 3
Pattern 4
Foil side