Tk-890H (B) Schematic Diagram - Kenwood TK-890 Service Manual

A
TK-890H
1
FINAL UNIT (X45-3570-10) :TK-890H(B) K
2
CN1
CN203 DO
DO
+20dBm
3
4
CN201
5
W5
DB
1
E
2
3
8R
4
5
8T
PC
1
5
6
7
14
X45-3570-10 1/2
B
( B )
SCHEMATIC DIAGRAM
R22
82k
TX DRIVE AMP
IC1
RA45H4452M-31
1
2 3
4
R14 C15
100p
33
R16
0V
(3.52V)
33
R25
82k
PROTECT OF VOLTAGE
D904
1SS355
CURRENT
STEERING
DC SW
R2
100k
2SC2712(Y)
DC SW
Q1
2SC2712(Y) R3
470
C
0V
(2.25V)
R24
6.8k
1/2(W)
CN5
CN6
R27
6.8k
1/2(W)
0V
(2.25V)
RIPPLE FILTER
Q901
2SC4116(Y)
R902
1k
Q2
D E
Q6
RD60HUF1-01
Q6,7
FINAL AMP
Q7
RD60HUF1-01
R904
0V
1k
(7.96V)
CORRECTION
FOR
TEMPERATURE
D902
R906
1.8k 1SS355
DC AMP
IC901
OP291GS
1 8
oUTA
+V
2 7
-INA
oUTB
3 6
+INA
-INB
4 5
-V
+INB
0V
(2.1V)
VR1
100k
B
8R
8T