Kenwood NXR-700 Service Manual page 132

NXR-700
1
REF_SW2
WP(SYS-RST)
EXT_EXiST
REF_EXiST
iMP_H_L
REF_iN_oUT
oX_SDi2
oCXo_VR_EN
oCXo_oN
oCXo_CURR
oCXo_EXiST
VCXo_DA_EN
REF_LDT
PLL_19_EN
PLL_19_CE
oX_SDo2
oX_SCLK2
2
3
RX_PWR_SAVE
oCXo_ST_R
oCXo_ST_G
VoLUME_IN
PWR_ST_R
MOD_D_OUT
RX_AUDIO_D
MIC_D_IN
iNRA_SW
HooK_RXD_SCM
AF_MUTE
iNSP_SW
EVOL_DATA
A
SCHEMATIC DIAGRAM
CN400
GND
1
GND
2
3
4
REF_SW
5
oX_SCL
6
7
oX_SDA
8
9
10
11
GND 12
13
GND 14
15
GND 16
17
GND 18
19
20
GND
21
GND 22
23
GND 24
25
GND
26
27
GND 28
29
GND
30
31
GND
32
3.3V
33
33MPU 34
GND 35
GND
36
REFERENCE 19.2MHz
CN302
R309
R311
L326
J703
L327
J702
CN401
GND 1
CHASSIS GND
GND 2
FRAME 12.5Hz
3
4
5
6
7
8
GND 9
10
BEEP 11
12
13
NC 14
15
AMP_SW 16
SCM_EN 17
18
19
20
0.1u
C359
BUFFER
IC300
TC7SET126FU-F
4 3
oUTY GND
2
INA
5 1
VCC G
0.1u
C360
BUFFER
IC301
TC7SET126FU-F
4 3
oUTY GND
2
INA
5 1
VCC G
R322 0
R927 0
R323 0
R928 0
R324 0
R929 0
R325 0
R930 0
R326 0
R327 0
R328 0
R329 0
R330 0
R331 0
R332 0
R333 0
R334 0
R335 0
R336 0
R337 0
L315
R361
4.91V
100k
C387
0
0.01u
3.44V Q300 C396
2SC4738(GR)F
0
2.80V
0.01u
Q300
REFERENCE AMP
33MPU
R397
0
IC302
R318
SN65HVD485EDR
5 4 R357 0
100
GND D
6 3 R358 0
A DE
R319
7 2 R359 0
B RE
8 1 R360 0
100
VCC R
RS-485 DRIVER/RECIEVER
R363 0
R364 0
R365 0
R366 0
R931 0
R367 0
R368 0
R369 0
R370 0
R947 0
R371 0
R932 0
R372 0
R933 0
R373 0
R948 0
R374 0
B
CONTROL UNIT2 (X53-4140-10)
33MPU
BER_CLK_L
BER_EN
BER_DAT_L
BER_EN
50MPU
BER_DAT
BER_CLK
REF_SW2
SYS_RST
REF_SW
oX_SCL
EXT_EXiST
oX_SDA
REF_EXiST
iMP_H_L
REF_iN_oUT
oX_SDi2
R417
oCXo_VR_EN
0
oCXo_oN
oCXo_CURR
oCXo_EXiST
33MPU
VCXo_DA_EN
REF_LDT
PLL_19_EN
PLL_19_CE Lo_VoL_DET
oX_SDo2
oX_SCLK2
33MPU
R404
R391 0
10
L308 L309 C438
820n 820n
0.01u
R396
0
R408
R409
BUFFER
IC727
TC7SH126FU-F
1 5
G VCC
2
INA
R913
3 4
GND oUTY
0
BUFFER
IC304
TC7SH125FU-F
1
5 33MPU
G VCC
2
R393
INA
0
3 4
GND oUTY
C420 0.1u
RX_PWR_SAVE
oCXo_ST_R
oCXo_ST_G
VoLUME_IN
PWR_ST_R
VOLTAGE PROTECTOR
D702 1SS355
AMP_SW
SCM_EN
AF_MUTE
EVOL_DATA
H6
VSS2
D_D6 H5
DQ6
D_D4 H4
DQ4
D_D3 H3
DQ3
D_D1 H2
DQ1
H1
VSS1
D_A0 G6
DQ15/A-1
G5
DQ13
G4
VCC
G3
DQ11
G2
DQ9
D_RD G1
oE
R451
47k
3.96V
VOLTAGE
DETECTOR
IC308
XC61CN2702N
L310
10u
R441
R418
C466 0.1u
3.54V
R411 100k
REFEREN
4.91V
4.7k C453
AMP
Q304
2SC4738(GR)F
0.01u
C467
R424
R440
680
0.01u
2.90V
R432
C461 0.01u R439
R438
C468
4.90V
Q305
2SC4738(GR)F
3.15V
REFERENCE AMP
C465
2.50V
0
PLL_GND
0.01u
0
CP_GND
R421 C462 R433
1
2
10 0.01u 1M
3
4
FRAME_DET
33MPU
TX_CoSDTo R431 0
IC309
AK4550VTP
TX_CoSDTi 9 8
SDTI SDTo
TX_CoLRCK 10 7
LRCK DEM1
11 6
MCLK DEM0
TX_CoSCLK 12 5
SCLK VDD
TX_CoPWAD 13 4
PWAD VSS
TX_CoPWDA 14 3
PWDA AINL
15 2
AoUTL
AINR
16 1
AoUTR
VCoM
CODEC
MOD_D_OUT
RX_AUDIO_D
MiC_D_IN
33MPU
R951
100k
FLAS
3.3V
82k
22
22
22
10
0.1
L311
1.5u
IC
TC7WU
1A
3Y
2A
GND