Kenwood NXR-800 Service Manual page 65

P
RX UNIT (X55-3100-13)
OP-AMP
IC6
LMC7101BIM5
1
OUTPUT
2
V+
3 INPUT+
INPUT-
C175
100p
R26
0
FREQUENCY
CONTROL
R43
0
R27
0
FREQUENCY
CONTROL
R400
0
R11
680
2SC4116(BL)F
R12
1k
2SC4116(BL)F
PLL ACTIVE
FILTER AMP
RF AMP
Q3
1.6V 2SC4617(R)
L10
C25
0.1u 680n
1.1V
Q
SCHEMATIC DIAGRAM
R120 R128
10k 100
VCO_A:457.5MHz 1.18V
VCO_B:472.5MHz 2.22V
CN63
5
V-
CV1
4
8.1V
FREQUENCY
CONTROL
L17 D5
C92
1u 5p(B)
1SV283F
R423
0
FREQUENCY
CONTROL
L18 D6 C93
1u
1SV283F 5p(B)
R424
0
RIPPLE
FILTER AMP
8.1V
Q6
R23 2SC4116(BL)F R46
0 33
R33 R40
1k 1k
1.7V
C58 C67
22u16 22u16
PLL ACTIVE
FILTER AMP
R38
Q4
22
1.1V
0.7V
Q2
5V
L20 L23
C64 C87
0.1u 27u 27u 0.1u
R47
1k
R
RIPPLE
FILTER AMP
R64 2SC4116(BL)F
0
R430 L27 C113 R422
270 1u 6p(B) 0
OSCILLATOR
Q7
L28 2SK2539-7
C142
4T
0.5p
A_ON:2.6V
A_OFF:2.6V
VCO_A
2SC4116(BL)F
R431 L29 C114
270 1u 6p
OSCILLATOR
Q8
L30 C143
2SK2539-7
4T
0.5p
B_ON:2.4V
B_OFF:2.5V
VCO_B
R425
2SC4116(BL)F
0
R436
4.7k
R44
0
L42
L26
15n
1u
C102
470p
6 20
5.1V
CP
AVDD1
7 19 R65
AVDD2 RSET
8 18 10k
REFIN VP
9 17
5.1V
DGND1 DVDD2
10 16
DGND2 DVDD1
IC5
ADF4111BCP7
FREQUENCY PLL
S
NXR-800
Q9
R90
33
R71
1k
R77
47
R97
100
7.7V
C187
DC SW
Q10
2.0V
22p
RF AMP
R83
Q17
2SC3356-A(R24)
4.7k
1.3V
R78
47
Q14
DC SW 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
RF AMP
5.1V
Q16
L45
C156
2SC3356-A(R24)
1.6V
15n
10p
1.2V
L48
R72
2.2 1u
R85
33k
R73
100k
Q13
1.4mV
2SA1832F
DC SW
Q15
SSM3K15TE(F)
DC SW
T
L60
C220
22n
4p
L61
C214
22n
4p
L62
10n
PLL
INDICATOR
Q56
SSM3K15TE(F)
DC SW
65
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