Schematic Diagram - Kenwood TK-890 Service Manual

F
FINAL UNIT (X45-3570-10)
B
8R
7.92V
(0V)
R910
15k
R909
10k
8T
COMBINER
D903
R915
10k
1SS355
Note : The components marked with a dot (
G

SCHEMATIC DIAGRAM

W2
REFLECTED
WAVE
RECTIFICATION
D2
HSM88AS
D1
HSM88AS
FORWARD
WAVE
RECTIFICATION
W1
R912
R911
39k
27k
DC AMP
IC902
OP291GS
R916
150k
C916
R917
R918
470p 56k 10k
•
) are parts of layer 1.
H
L5
L6
K1
S51-1437-05
SURGE ABSORPTION
TX/RX SW
R12
Q8
1.2k
FMC2
13.4V
(12.50V)
0V
(0.60V)
SURGE
ABSORPTION
PROTECT OF REVERSE
CONNECTION
0V
(0.50V)
I
TK-890H
+48.75 - +50dBm
L7 R21
ANT
0
CN2
RA CN104
D4
1SS193
9.5V
(0V)
TX/RX SW
Q9
2SD1624(S)
D5
02CZ10(X,Y)
VOLTAGE
REFERENCE
DC 13.4V
+B
CN3
CN4
E
D6
D7
W4
3
2
1
X45-3570-10 2/2
J
( B )
1
2
RA
3
4
5
CN501
1
+B
+B
E
6
3
7
15