Kenwood NX-220 Service Manual page 101

Z
TX-RX UNIT (X57-8040-10)
-
+
Li-ion
BATTERY
S
CN1
1
+B
2 SB1
3
NC
4
33A
5
VOL
6
VOL_GND
7
ENC3
8
GND
9
ENC4
10 ENC2
11
ENC1
5
33A
IC503
1.50V
XC9235A15CM-G
L503
R547
15M 5
LX
4.7u
0
4
VoUT
DC/DC(15M)
33M
3.30V
33A
BATT
33M
PCK_RF
R647
0
SCK1
PCK_DSP
AND GATE
D
/PCS_RF
R646
0
/PCS_DSP
/PCS
SB2
AND GATE
D
33M
6
33A
50C
AA
SCHEMATIC DIAGRAM /
+B
CN502
F53-0324-05
2.5A
7.50V
F 1
R501
270k
C501 470p
C502 470p
6800p
C504
L502 C599 470p
470p
C548
R503 0
470p
C550
C551 470p
470p
C552
R509 2.2k
L508
R510
V I N 1
10
2
V S S
3
C E/M oD E
DC/DC CONV
D
33M
SPEED UP
AVR (33A)
3.30V
AVR (33M)
AB
原理图
+B
7.49V
L504
REVERSE
PROTECT
CN504
GND
CN505
R508
1k
IC 506
L509 LT1616ES6-PBF
15u
D505,506
R530
100k Q506
3.83V
R531
100k
S S M 6N 16F E -F
L506
LEVEL CONV
R532
Q507
100k
D502
R533
1SS388F
100k
S S M 6N 16F E- F
R507
LEVEL CONV
R:2.05V
68k
T:2.01V
Q501
2SJ648-A
SB2
R520
2 .2
R511
S S M3 K1 5T E (F )
470
R:7.48V
T:7.38V
DC SW CONT(SB2)
AC
NX-220
5.00V
AVR(50C)
AVR(33C)
IC505
XC6209B332M-G
3.30V
1 V I N
VoUT 5
2 V SS
3 CE
NC 4
SB1
DC/DC (38M)
L511 R554
1u
1
R:7.50V
T:7.33V
R542
470k
D508 DC/DC CONV
DAN222 Q509
R546
E MD 12
10k
R543
470k
DC/DC CONT(100C)
DC SW(SB2)
+B
Q502
VOLTAGE DET(BATT)
X57-804 4/8
AD
5
+B
33C
50C
5
/PSW
/BINT
50C
SBC
6
33A
50C
101