Kenwood NXR-800 Service Manual page 162

A
OPTIONAL ACCESSORIES: KXK-3 (OCXO UNIT)
Schematic Diagram
OPTION UNIT(OCXO)(X42-3280-20)
R79
100k
R89
1k
CN3
1 8oCXo
2 GND
CN1
1 REF_SW2
2 GND
SSM3K15TE(F)
3 oX_SDo2
4 oCXo_EXIST
5 oX_SDI2
6 oCXo_CURR
7 oX_SCLK2
8 oCXo_oN
9 oCXo_VR_EN
10 oX_SCL
11 oX_SDA
12 GND
13 33MPU
Note : The components marked with a dot (
B
REF_SW_2
DC SW
Q13
SSM6L05FU-F
C71 C72
100p 27p
C35 L19 L20 L21
2.2u 680n 560n
0.1u
RF AMP
C31
Q6
2SC4617(R)
0.1u
F1
2.5A
R26
C104
0.27
F53-0324-05
0.01u
C87
470p
3 4
-IN +IN
2
V-
R67 1 5
oUT V+
100
IC4
LTC6101BIS5-F
OP AMP
DIGITAL POTENTIOMETER
IC3
AD5231BRU10
R15 1 16 R82 100k
o1 o2
100k 2 15 R83
100k
CLK RDY
3 14 R10
1k
SDI CS
4 13 R68
10k
SDo PR
5 12 R69
1k
DC SW
GND WP
Q4 6 11
VSS VDD
7 10
R6
T A
8 9
470
B W
R17
DC SW
470k
Q3
SSM3K15TE(F)
R5
470
DC SW
Q2
SSM3K15TE(F)
R4
470
EEPROM
IC11
S24CS02AFJTBG
1 8
A0 VCC
R90 0 2 7
A1 WP
R91 0 3 6
A2 SCL
R92 0 4 5
GND SDA
R80
470
C
L15
R59
820 33u
DC SW
D5
JDP4P02U
C47 C54
R85 1 4
C62
0 2 3 R55
0.1u 0.1u
18
0.1u
DC SW
Q15
2SJ484
C88
470p
DC SW
Q16
SSM3K15TE(F)
R76
470
X1
L77-1977-05 1
NC
3 4 R81 R28 2
VDD oUTPUT INA
2 0 100 3
REF_V GND
R20 1 5
FREQ_ADJ
GND
100
R34
15k
OP AMP
IC6
TC75S59F-F
5 R33
1
VDD IN-
47k
2
VSS
4 R31
3
oUT IN+
1k
DC SW
Q14
SSM3K15TE(F)
C100
0.1u
C102
OX_SDA
R93 1k
470p
OX_SCL
R94 1k
R95 1k
DC SW
Q17
SSM3K15TE(F)
•
) are parts of layer 1.
D
NXR-800
C64
CN2
TX UNIT
X55-312 (A/3)-CN407
0.1u
VOLTAGE REGULATOR
IC9
NJM7805FA
IN OUT
GND
INVERTER
IC10
TC7SHU04F-F
5 L5 L6
VCC
12u 15u
C17 C81 C82
4 R88
oUTY
1k
0.1u 5p 1.5p
(B) (B)
DETECTOR
D8
HSM88AS-E
C13
0.1u C80
R36
Q5
2SC4617(R)
0.1u
RF AMP
OCXO_CURR
ADC
IC12
C101
AD7418ARMZ
1 8 R97
0.1u
SDA CoNVST
C103
2 7 10k
SCL VDD
R96 3 6
470p
oTI REFIN
10k 4 5
GND AIN
E
1
2
3
4
C22
0.1u
5
1k
6
7
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