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

A
TK-890/890
1
2
CN1
CN203
DO
DO
+20dBm
3
4
CN2
+B
CN501
W1
1
3
+B
5
2
+B
1
E
3
CN201
1 W2
PC 4
8T 3
8R
2
6 E 1
DB
5
-10
7 -11
-12
12
X57-5620-XX (C/3) 1/2
B
( B )
SCHEMATIC DIAGRAM
POWER AMP
* IC1
1 2 3
R2
33
R3
33
0V
(4.27V)
PROTECT OF VOLTAGE
D1
13.57V
PROTECT OF REVERSE (12.6V)
CONNECTION
D2
SURGE ABSORPTION
X57-5620-XX(C/3) C11 C13 C16
TK-890/890(B) K 10u35 NO 2p
TK-890(B) K2 10u35 6p 7p
TK-890(B) K3 NO NO 3p
C
FINAL UNIT (X57-5620-XX) (C/3)
4
-10 : TK-890/890(B) K -11 : TK-890(B) K2 -12 : TK-890(B) K3
L1
RIPPLE
FILTER
Q801
2SC4116(Y)
R804
1k
C41 C42 C814 C822 IC1
NO NO NO NO RA45H4452M-31
NO NO NO NO RA45H4452M-31
47u25 0.01u 470p 1u16 RA45H4047M-31
D
CURRNT
STEERING
D802
R806
1.8k 1SS355
DC AMP
IC801
OP291GS
8 1
oUTA
+V
7 2
-INA
oUTB
6 3
+INA
-INB
5 4
-V
+INB
0V
(4.9V)
VR1
100k
E
8T
C814
*
R808
100k