Kenwood NXR-700 Service Manual page 133

Z
TX UNIT (X56-3112-72) (A/3)
13.2V
SCLK0
SDo0
13.2V
WP
5V #2
33MPU
oX_SCLK2
oX_SDo2
PLL_19_EN
REF_LDT
VCXO_DA_EN
oX_SCLK2 OCXO_EXIST
oX_SDo2
VCXO_DA_EN
.
R840
0
.
R845
0
VOLTAGE
REGULATOR
IC809
NJM7808FA-ZB
IN
oUT
33MPU
oX_SCLK2
OCXO_EXIST
oX_SDo2
.
REF_SW2
C576 .
18p
L434
390n
<--10MHz
<--10MHz
10MHz--->
REF SIGNAL
OUTPUT
Note : The components marked with a dot (
AA
SCHEMATIC DIAGRAM
.
CN805
GND
1
GND
2
33MPU
3
4 oX_SCLK2
GND
5
6
oX_SDo2
.
. GND
7
R869 R830
PLL_19_CE
8
. 0
100k
GND
9
R831
10 PLL_19_EN
0
. GND
11
R832 12 REF_LDT
0
.
GND
13
R833
14 VCXo_DA_EN
0
. GND
15
R834 16 oCXo_EXiST
0
. GND
17
R835 18 oCXo_CURR
0
. GND
19
R836
20 oCXo_oN
0
. GND
21
R837
22 oCXo_VR_EN
0
GND
23
24 oX_SDi2
GND
25
. 26 REF_iN_oUT
R865 iMP_H_L
27
100k
. 28 REF_EXiST
R866 oX_SDA
29
0
. 30 EXT_EXiST
R867 oX_SCL
31
0
32 REF_SW
WP
33
34 REF_SW2
GND
35
36 GND
.
8V
CN807
1
OCXO
OPTION UNIT(OCXO)
GND
X42-328 -CN3
2
.
CN803
1 33MPU
2 GND
oX_SDA
3
OX_SDA
4 oX_SCL
OX_SCL
oCXo_VR_EN
5
OCXO_ON 6 oCXo_oN
oX_SCLK2
7
OCXO_CURR
8 oCXo_CURR
oX_SDI2
oX_SDi2
9
10 oCXo_EXiST
oX_SDo2
11
12 GND
13 REF_SW2
.
19.2MHz --> REF1 RX UNIT
.
X55-309 -CN45
CN406
C575 . 18p
L433
.
REF2
390n
CN405
.
REF_IN
CN408
. OCXO
OPTION UNIT(OCXO)
X42-328 -CN2
CN407
.
REF oUT
CN403
•
) are parts of layer 1.
AB AC
+20dBm
+20dBm
136-154MHz--> .
CN802
13.2V
SCLK0
SDo0
T:11.82V
R:12.91V
13.2V
1
3
MOD
5
SDo1
7
SCLK1
9
.
SDI1
. R812 0
11
SR_EN
. R813 0
8AD_EN
0
. R814
13
SR_OE
R815 0
.
2DA_CE
. R816 0
15
3DA_EN
0
. R817
2DA_EN
R818 0
. 17
LDT
. R819 0
132_CE
0
. R820
19
440_CE
R821 0
.
132_EN
. R822 0
21
440_EN
. 0
R823
VR_EN
R824 0
23
ANT_SW
25
SCK
27
DGND
SDA
29
CoNT_5.0V
31
33
PAG
35
IC812
TC7W53FK(F)
1
8
1
CoMMoN
VCC
7
2
INH 3
CH0
6
3
VEE
CH1
5 4
GND 5
A
7
C898
9
1000p
R894 R893
0 10k
11
D
13
15
TEMP_RST
17
FAN_CONT2
19
FAN_CONT
21
PWR_CONT
23
PWR_PRT
25
RFL_PWR
27
FWD_PWR
29
FAN_CURR
31
PA_CURR
33
35
AD
NXR-700
FINAL UNIT
TX oUT
X45-385 (A/5)
-CN1
.
CN801
E
1
FINAL UNIT
2
B
X45-385 (C/5)
-CN12
3
B
.
CN804
GND
2 GND
WP
4 MoD
GND
6
SDo1
SCLK0
8 SCLK1
SDo0
10 SDi1
SR_EN
12 8AD_EN
SR_oE
14 2DA_CE
3DA_EN
16 2DA_EN
LDT
18 132_CE
440_CE
20 132_EN
440_EN
22 VR_EN
DDS_EN/VER
24 ANT_SW
TEMP_PRT
26 SCK
D_GND
28 SDA
D_GND
30 CoNT_5.0V
D_GND
32 CoNT_5.0V
GND
34 PAG
GND
36 GND
.
CN806
GND
2 GND
WP
4
GND
D_GND
6
SDA
D_GND
8 SCK
D_GND
10 CoNT_5.0V
D_GND
12 TEMP_PRT
GND
14 ANT_SW
GND
16 TEMP_RST
GND
18 FAN_CoNT2
GND
20 FAN_CoNT
GND
22 PWR_CoNT
GND
24 PWR_PRT
GND
26 RFL_PWR
GND
28 FWD_PWR
GND
30 FAN_CURR
GND
32 PA_CURR
GND
34 NC(FAN_CURR2)
GND
36 GND
X56-311 (A/3) 6/6
1
2
3
4
5
6
7
131