Kenwood NXR-700 Service Manual page 111

P
RX UNIT (X55-3090-XX)
OP-AMP
IC6
LMC7101BIM5
1
OUTPUT
2
V+
3
INPUT+
C175
100p
R26
0
FREQUENCY
CONTROL
R43
0
R27
0
FREQUENCY
CONTROL
R400
0
K2
R11
680
R12
680
2SC4116(BL)F
PLL ACTIVE
FILTER AMP
RF AMP
Q3
2SC4617(R)
1.6V
L10
C25
680n
0.1u K:1.1V
K2:1.0V
X55-3090-XX TH2
-10 K NO
-11 K2 157-103-53007(10k) 157-103-53007(10k)
Q
SCHEMATIC DIAGRAM
R120 R128
VCO_A:203M 2.31V
K
10k 100 VCO_B:217M 2.22V
A:0.86V
K2
B:3.54V
CN63
5
V-
CV1
4
INPUT-
FREQUENCY
CONTROL
D5
L17
C92
10u 7p(B)
1SV283F
*
C668
L24
10u
FREQUENCY
CONTROL
FREQUENCY
CONTROL
*
L18 D6 C93
10u
1SV283F
*
C669
L25
10u
FREQUENCY
CONTROL
RIPPLE
K:8.1V
FILTER AMP
K2:8.0V
Q6
2SC4116(BL)F
R23 R46
0 33
R33 R40
1k 1k
VCO_A:3.9V
K
VCO_B:3.8V
A:1.5V
B:6.0V
C58 C67
47u10 47u10
PLL ACTIVE
FILTER AMP
*
R38
Q4
2SC4116(BL)F
VCO_A:0.6V VCO_A:1.1V
K K
VCO_B:0.6V VCO_B:1.1V
A:0.7V A:1.2V
K2 K2
B:0.6V B:1.1V
Q2
5V
L20 L23
C64 C87
0.1u 1.2u 1.2u 0.1u
TH3 L28 R38 R44 R91 R96
NO L34-4586-05(4.5T) 47 22 100 10
L34-4599-05(5.5T) 100 0 1k 47
R
RIPPLE
FILTER AMP
R64 2SC4116(BL)F
0
K:8.2V
K2:6.2V
* L27
R433 C113
10u 7p(B)
C665
8p(B)
OSCILLATOR
Q7
*
L28 2SK508NV(K53) C142
0.5p
VCO_A:1.5V
K
VCO_B:1.8V
A:2.1V
K2
B:2.1V
VCO_A
2SC4116(BL)F
*
* L29 C114
R434
10u
*
C662
OSCILLATOR
Q8
L30 2SK508NV(K53)
4.5T
VCO_A:1.8V
K
VCO_B:1.5V
A:2.1V
K2
B:2.2V
VCO_B
2SC4116(BL)F
R436
4.7k
*
R44
L42
L26 33n
1u R57
47
C102
1000p
6 20
5V
CP
AVDD1
7 19 R65
AVDD2 RSET
8 18 6.8k
REFIN VP
9 17
5V
DGND1 DVDD2
10 16
DGND2 DVDD1
IC5 R73
ADF4111BCP7
100k
FREQUENCY PLL
R98 R103 R433 R434 C89 C93 C94 C95 C105 C114
180 6.8k 150 150 7p 6p 5p 8p 6p 6p
220 8.2k 330 330 8p 7p 7p 7p 5p 7p
S
NXR-700
9V
Q9
R90
33
R71
1k
R77
47
R97
10
K:8.9V
K2:9.0V
DC SW
C187
K:1.6V
Q10
K2:1.5V
15p
RF AMP
R83
Q17
4.7k 2SC3356-A(R24)
K:0.8V
K2:1.0V
C143
R78
0.5p
47
DC SW
Q14
SSM3K15TE(F)
DC SW
Q11
R84
4.7k
Q59
SSM3K15TE(F)
DC SW
R435
47k
Q61 Q60
SSM3K15TE(F) SSM3K15TE(F)
DC SW DC SW
K:5V
RF AMP
K2:4.9V
K:1.6V
Q16
*
L45 C156
K2:1.4V
2SC3356-A(R24)
33n
K:1.2V
K2:0.7V
L48
R72
1u
2.2
R85
33k
Q13
0V
2SA1832F
DC SW
Q15
SSM3K15TE(F)
DC SW
C124 C125 C138 C151 C156 C206 C586 C662
7p 15p 33p 15p 15p 15p 1000p 7p
8p 18p 39p 22p 18p NO 10p 8p
T
L60
C220
33n
15p
L61 C214
33n
15p
L62
10n
PLL
INDICATOR
Q56
SSM3K15TE(F)
DC SW
C664 C668 C669 C670 C676
6p 8p 7p 5p NO
5p 7p 8p 6p 7p
99
X55-309 4/6