Kenwood TKR-850 Service Manual page 80

F
FINAL UNIT (X45-3740-XX) (A/2)
TX
DRIVE
AMP
FINAL AMP
Q4
PD55008S
C43
*
R20 R21
0 0
T:4.26V
R:0V
DC AMP
VOLTAGE
C120
REFERENCE TA75W01FU
R59 0.022u 5
IN2+
0
R55 6
IN2-
470k
7
OUT-B
8
VCC
R62
R54
1k
T:13.05V
R:13.56V
D7
SURGE
PROTECTOR
X45-3740-XX R24 C39 C40
0-10 K,E 100k 12p 22p
0-11 K2 120k 8p 27p
0-12 K3 100k 18p NO
G
SCHEMATIC DIAGRAM
Q5
RD60HUF1-01
D4,5
RF DETECTOR
IC3
4
VEE
3
IN1+
2
IN1-
1
OUT1
10k
D8
REVERSE
CURRENT
PROTECTION
D8
K1
RB051L-40
D9
MINISMDC050-02
CURRENT
PROTECTOR
CHARGE
C43 C44 C59 C60 C83 C86 C88
22p 6p 10p NO 6p 10p NO
18p NO 8p 6p 5p 8p NO
22p 10p 12p 8p 7p 12p 6p
Note : The components marked with a dot (
H
C160
L16
C61 10n C81
82p 82p
L17
18n
RF SWITCH
D53
MA4PH633
R41
0
ANT SW
MAIN DC CN6
W3 +B1
W4 GND
CN7
BACKUP
W5 +B2
GND CN8
C89 C118 C121 C122 C123 C124
5p 4p 15p 15p 22p 22p
5p NO 18p 18p 22p 18p
NO NO 18p 18p 27p 27p
I
TKR-850
82p
L11
L9
15n 15n
C68
R70
0
470p
D55,56
RF SWITCH
1
3
(X45-3740-XX) (B/2)
CN51
D51,52
PROTECT OF REVERSE
CONNECTION
CN52
• ) are parts of layer 1.
J
1
2
TX ANT
3
RX
CN5
4
E
B
B
MAIN DC
5
+B1
GND
BACK UP
BATTERY
+B2
6
GND
7
71
X45-374 2/2