Kenwood NX-200 Service Manual page 152

AY
NX-200
SCHEMATIC DIAGRAM /
TX-RX UNIT : (X57-7360-10) (A/2)
SWITCH UNIT
(X41-3710-10)
CN401
PTT 1
PTT GND 2
Side_G 3
SIDE 1
SIde_1 4
Side_2 5
SIDE 2
152
X57-736 (A/2) 1/4
AZ
R501
10k
CN400
1 LED_G
C441 47p
2 /EMG
/PTT
C442 47p
3 LED_R
Side_G
C443 47p
SIde_1
4 IFC
Side_2
C444 47p
5 /SAVE
C445 47p
6 I2CCK
7 /5TC
C447 47p
8 I2CSDA
9 SBC
C449 47p
10 /T_R
C450 47p
11 TV2
C451 47p
12 ASSIST
C452 47p
13 TV1
C453 47p
14 VAGC
C454 47p
15 5RC
C473 47p
16 TCXO_MOD
C474 47P
R499 0
17 GND
18 RSSI
C476 47p
R498 0
19 GND
20 CV
C478 47p
21 AGND
R430
22 NC
0
23 NC
24 +B
25 +B
26 +B
C426
27 +B
47p
28 NC
29 NC
30 GND
31 /PTT
C455 47p
32 Side_G
C470 47p
33 Side_1
C436 47p
34 W_/N
C438 47p
35 SDO1
C439 47p
36 Side_2
C472 47p
37 /PCS_RF
C434 47p
38 /DSW
C428 47p
39 APC
C429 47p
40 /APCSW
C430 47p
VCO_MOD
41
C431 47p
42 THP
C432 47p
43 PLD
C433 47p
44 38M
C479 47p
45 SCK1
C435 47p
46 GND
C437 47p
47 S_DET
48 GND R429
0
49 NC
IF_DET
50
C440
R400
0
47p
S
F400
L400
2.5A
REVERSE
PROTECTION
BA BB
原理图
LED_G
R490
0
LED_R
R500
10k
IFC
1
/SAVE
LED_G
I2CCK
/5TC
I2CSDA
SBC LED_R
/T_R
5RC
TV2
R : 7.49V
T : 7.26V
TV1
VAGC
4
TCXO_MOD
R438
0
RSSI
VOLTAGE
REGULATOR(33C)
CV
D401
50T CONTROL
R : 3.27V
T : 62.3mV
D401
HSC119
R407
47k
R : 3.285V
T : 59.4mV
/PTT
2
Side_G
R : 4.977V
T : 5.038V
Side_1
50R
SWITCH
SDO1 R : 5.5mV
T : 4.81V
Side_2
R : 4.974V
T : 4.974V
/PCS_RF
50IF
/DSW
SWITCH
APC
/APCSW
R : 7.494V
VCO_MOD
T : 7.353V
SB3
PLD SWITCH
3
R : 5.1mV
T : 55.4mV
SCK1
Q404
DC/DC
CONVERTER
SWITCH
IF_DET
R : 7.23V
T : 7.06V
4
R409
R408 0
10
BC
TX/RX LED
TX/RX LED
SWITCH R : 100mV
LG
T : 6.38V
Q406
D402
UMG9N
R427
B30-2278-05
C462
390
470p R426
R428
C463 10
820
470p
R : 6.57V LR
T : 79mV
VOLTAGE
IC400
REGULATOR(50C)
TK11250CUCB
R418
4 3
VIN CoNT /SAVE
1k
5 2
GND GND
6 1
VoUT NP
R : 4.97V
T : 5V
R : 3.32V
T : 3.35V
R : 3.80V
IC403
T : 3.80V
TK71733S
1 5
VIN VoUT
2
GND
3 4
oN/oFF NP/VREF
R452
1k
SBC
R : 4.35mV
T : 4.99V
R : 4.974V
T : 4.987V
Q405
2SA1955A-F
IC401
TC75S51FE(F)
1 5
IN+ VDD
Q405
2
VSS
50T
R421
SWITCH
1k
3 4
IN- oUT
R : 4.974V
T : 4.25V
50T CONTROL
/5TC
R : 0.314V
Q401
T : 70mV
SSM6L05FU-F
R413
5RC
1k
R : 3.28V
T : 68.5mV
Q402
SSM6L05FU-F
R436
1k
R : 7.478V
Q403
T : 7.338V
SSM6L05FU-F
R415
1k
R : 3.276V
T : 3.331V
R : 14.28V
T : 14.32V
Q404
L401 SSM5H01TU-F
68u
IC402
XC9101D09AKR
1 8
EXT VSS
2 7
LSEN VoUT/FB
3 6
VIN CC/GAIN
4 5
CE/SS CLK
DC/DC
CONVERTER
THP
1
50C
+B
33C
D403
REVERSE
PROTECTION
50T
2
50R
50IF
150C
3
4