Kenwood NXR-710 Service Manual page 80

A
NXR-710
CONTROL UNIT (X53-4490-10)
1
L301
CN301
SB 3 L302
+B 2 L303
2
GND 1
L313
L314
3
4
5
CN5
N_SYNC1_B 1
N_SYNC1_A 2
N_SYNC2_B 3
N_SYNC2_A 4
N_SYNC1_B 5
N_SYNC1_A 6
N_SYNC2_B 7
N_SYNC2_A 8
6
7
80
X53-449 1/6
B
SCHEMATIC DIAGRAM
SB
13.6V 13.6V
R301
0
R302
0
6.0V
L305
L304
C308
0.47u
DC/DC
CONVERTER
IC301
LT3685EMSE
D301
SURGE PROTECTOR
50M
RS-485
TRANSCEIVER
IC4
ISL8485EIBZ
R12
5 4
L2 GND DI
100
L33-1500-05 6 3
A/Y DE
R13 7 2
B/Z RE
100 8 1
VCC Ro
50M
RS-485
TRANSCEIVER
IC5
ISL8485EIBZ
5 4
L3 GND DI
R10 100 L33-1500-05 6 3
A/Y DE
R11 100 7 2
B/Z RE
8 1
VCC Ro
C
VOLTAGE
REGULATOR
IC302
XC6201P502PR
L306 3 1 L307
50M
VIN VOUT
VSS
2
L315
D302
SURGE PROTECTOR
60DC L312 L308
VOLTAGE
REGULATOR
IC303
XC6204B332P1
L311
R310
22
VOLTAGE
REGULATOR
IC304
XC6205B152PRN
1 5
NC VoUT
2
VSS
3 4
CE VIN
R309
22
VOLTAGE
REGULATOR
IC305
XC6205B162PR
1 5
NC VoUT
2
VSS
3 4
CE VIN
VOLTAGE
REGULATOR
IC307
R313 XC61CN2702N
8.2k(D)
VOLTAGE REFERENCE
R315 D303
470 02DZ18F-X
Q301
RT1N441U-T111
DC SW
BUFFER
IC10
TC7SH125FU-F
1
BUFFER
G VCC
2
IC7
INA
TC7WT125FUF
3
GND oUTY
C35
0.1u
BUFFER
IC11
TC7SH125FU-F
1
BUFFER VCC
G
2
IC8
INA
TC7WT125FUF
3
GND oUTY
C36
0.1u
D
5.0V
3.3V
VOLTAGE
REGULATOR
IC306
XC6204B332P1
1 5 L316
NC VoUT
2
VSS
3 4
CE VIN
A
A A
A A
3.3V
D304,305
3.3V
SURGE
POWER SW
PROTECTOR
Q303
2SA1955A-F
VOLTAGE
REGULATOR
DC SW
D304
IC308 Q302
XC6109C29ANN SSM3K15TE(F)
1SS388F
R316 1 4
VIN VoUT
0
2 3
VSS CD
R320 /RST
C336 0.01u
100
1.5V
L309
15M
1.6V
R324
16M
0
/BiNT
/oVRB
R44 /485_RE1
0
5
4 R45 RXD1
0
R46 TXD1
0
R47 485_DE1
0
R48 TXD3
0
5
4 R49 RXD3
0
R50 /485_RE2
0
R43 485_DE2
0
E
SB
15M
33BU
33M
50M
33A
16M
33M
33M
33M
50M