Schematic Diagram; 原理图 - Kenwood NX-800 Service Manual

A
NX-800
TX-RX UNIT (X57-7752-71) (A/2)
1
R : 13.57V
T : 13.09V
L401
L402
CN401
L403
CN402
SURGE
ABSORPTION
2
VOLTAGE
REGULATOR (33M)
4.99V
3
IC401
XC6108C23CMN
4
VSEN VIN
VSS
R : 3.62V
5
T : 3.50V CD VoUT
VOLTAGE
DETECTOR (BINT)
/BINT
4
OVER DC
SUPPLY
PROTECTION
5
DC SW
(IGN)
Q403
RT1N140U-T111
CN403
R401
1
2
1M
6
7
130
X57-775 (A/2) 1/16
B

SCHEMATIC DIAGRAM /

REVERSE
PROTECTION
IC408
3.32V
5.01V
XC6204B332M
1
VIN VOUT
2
VSS
3
CE NC
VOLTAGE
REGULATOR (33A)
3
2
1
C415
470p
Q404
2SJ645
DC SW
(SB)
REVERSE
CURRENT
PREVENTION 0V
D403
Q401
(K2)
1SS416
RT1N141U R : 1.73V
-T111 T : 1.66V
Q402
1.88V
RT1N141U-T111
0V
DC SW
(SB)
SW (OVER DC
SUPPLY
PROTECTION)
R408
10k
L406
68u
IC410
XC9101D09AKR
1
EXT
R436
2
LSEN VoUT/FB
7.84V
0
R435
3
VIN CC/GAIN
4
10
CE/SS
DC/DC
CONVERTER
(150C)
C
原理图
IC405
LT1616ES6-PBF
R : 13.57V
T : 13.07V
4
SHDN FB
L404
5
VIN GND
6
SW BooST
IC405,D407,409
DC/DC
Converter (50M)
3.29V
Q416 3.29V
SSM6L05FU-F
5
1.88V
4
0V
D408
1SS301F
DC SW (33A_2)
REVERSE
CURRENT
PREVENTION
(OR 33M/SBC 2)
1.57V
3.31V
Q405
2SA1955A-F
DC SW
DC SW
(SCTAM1)
(33BU)
Q406
UPA672T-A
0V
VOLTAGE
REGULATOR (80C)
IC403
R : 13.55V
NJM78M08FA-ZB
T : 13.02V
1 3
IN oUT
GND
2
D406
REVERSE
CURRENT
PREVENTION
(BLVL)
VOLTAGE
REGULATOR (50C)
IC404
4.99V
TA7805FQ
1 2
IN oUT
GND
3
1
14.34V
R450
0
DC SW
8
VSS
7
C462
6
5
470p
CLK
D
3
5.01V
2
D409
1
1SS388F
L405
22uH
5.00V
Q412
3.89V 1.49V
2SA1955A-F
DC SW
(50MC)
0V
Q410
SSM3K15TE(F)
DC SW
(50MC)
VOLTAGE
REGULATOR (15M)
Q411
3.31V
REVERSE
2SA1955A-F
CURRENT
DC SW
PREVENTION
(33BU)
(33BU)
2.97V
R422
D410
REVERSE
10k
0V
CURRENT
1SS388F
PREVENTION
(BACK UP BATTERY)
BATT CHK
R : 8.03V
T : 7.97V
R : 0V
T : 7.96V
Q407
12A02CH
R423
DC SW (80T)
4.7k
R : 8.01V
T : 0V
Q413
Q408
RT1N141U-T111
12A02CH
R424
DC SW (80R)
4.7k
R : 0V
T : 8.01V
Q414
RT1N141U-T111
R : 4.96V
Q409
T : 0V
12A02CH
R425
DC SW (50R)
4.7k
R : 0V
T : 4.96V
Q415
RT1N141U-T111
IC406
3.30V
TK71733S
1 5
VIN VoUT
2
GND
3 4
oN/oFF NP/VREF
VOLTAGE
REGULATOR (33C)
IC407
3.28V
XC6204B332M
1 5
VIN VOUT
2
VSS
3 4
CE NC
VOLTAGE
REGULATOR (33GPS)
E
+B
50M
33A
33A_2
50MC
15M
33M
SCTAM1
33BU
/BINT
/RST
SB
80C
1
80T
TXC
80R
R : 8.01V
T : 0V
C482
1000p
50C
50R
C483
1000p
RXC
33C
33GPS
150C 1