Kenwood TKR-851 Service Manual page 58

F
FINAL UNIT (X45-374X-XX) (A/2)
TX
DRIVE
AMP
FINAL AMP
Q4
PD55008S
RD60HUF1-01
C43
*
R20 R21
0
0
T:4.26V
R:0V
DC AMP
VOLTAGE IC3
C120
TA75W01FU
REFERENCE
0.022u 5
R59
IN2+
R55 6
0
IN2-
470k 7
OUT-B
8
VCC
R62
R54
1k
T:13.05V
R:13.56V
D7
SURGE
PROTECTOR
X45-374X-XX C39 C40
2-71 K,E 12p 22p
0-13 K2,M2 8p 27p
2-72 E3 12p NO
G
SCHEMATIC DIAGRAM
Note : The components marked with a dot (
Q5
C61
82p
D4,5
RF DETECTOR
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 C85
22p 6p 15p NO 6p NO
18p NO 15p 6p 5p NO
22p 10p 27p 15p 7p 12p
H
C160
82p
L16
10n C81
82p
L17
18n
D53
MA4PH633
R41
0
ANT SW
(X45-374X-XX) (B/2)
MAIN DC CN6
W3 +B1
W4 GND
CN7
BACKUP
W5 +B2
GND CN8
C86 C89 C118 C121 C122 C123
10p 5p 8p 15p 15p 22p
8p 5p NO 18p 18p 22p
NO 6p NO 18p 18p 27p
I
TKR-851
•
) are parts of layer 1.
L9 L11
15n 15n
C68
R70
0 470p
1
3
CN51
D51,52
PROTECT OF REVERSE
CONNECTION
CN52
C124 C178 C186 C187 C188 C189
22p 3p NO NO NO NO
18p 3p NO NO NO NO
27p 4p 82p 82p 82p 82p
J
1
2
TX ANT
3
RX
CN5 4
E
B
B
5
MAIN DC
+B1
GND
BACK UP
BATTERY
+B2
6
GND
C190 C191
NO NO
NO NO
7
82p 82p
49
X45-374 2/2