Kenwood NX-220 Service Manual page 98

K
NX-220
SCHEMATIC DIAGRAM /
TX-RX UNIT (X57-8040-10)
R690
0
D
R:7.47V
CN2
T:7.25V
1
R653
2
0
C616 47p
3
4
C618
47p
5
C620 47p
6
47p
C622
33A
7
8
C624 47p
9
10
C626 47p
50C
11
C627 47p
12
47p
C628
13
47p
C629
14
C630 47p
15
C631 47p
R655
16
0
17
18
C638 47p
19
C639 47p
20
47p
C640
21
47p
C641
22
C642 47p
23
C643 47p
33M
24
47p
C644
98
X57-804 1/8
L
/RD
G1
oE
D[9]
G2
DQ9
D[11]
G3
DQ11
G4
VCC
IC601
D[13]
G5
DQ13
D[15]
G6
DQ15
3.30V
H1
VSS1
FLASH
D[1]
H2
DQ1
MEMORY
D[3]
H3
DQ3
D[4]
H4
DQ4
D[6]
H5
DQ6
H6
VSS2
C652
1u
C653
0.01u
D
SB2
MICI
ACCELERATION SENSOR
KXSD9-2050
SPAF
TV1
TV2
3.30V
VCO_MOD
MOD
D
5.0V
MIC
33A
VOX
R656
RXAF_2
56k
/LCDCS
C601
100p
/EVCS
IC904
DISP_VER
4 oUT
IN-
SDO0
V S S
5 VDD
IN+
SDI0
TC 75S 51FE (F )
SCK0
OP AMP(BEEP/AF)
33A
M
原理图
A[16]
A[0]
A[15]
A15 D6
A[11]
A[16]
A11 G 4
D5 A[19]
A16
A[15]
A19
G 5
D4
A[20]
A15
A20
G 6
D3 A[5]
DQ3
A[9]
A5
H1
D2 A[1]
A9
A1 A[10]
H2
D1
A[14]
A10
A[11]
A14
H3
C6 A[10]
A11
A[12]
A10
H4
C5
A12
A21 A[13]
H5
C4
A[18]
A13
A18 A[14]
H6
C3 A[6]
A14
A6
C2
A[2]
A2
C1
R618
D
470k
D
L617
R619
IC613
10
R620
1 9
SCL/SCLK
IOVDD
10
2 8
ADDR/SDI
DNC
7
3
C668
MOT
AUXIN
6
4
GND NCS
IC607
XC6119C29ANR
3 CD
C701
0.1u
4
VoUT
3.30V
RESET
R661 C606
180k
0.01u
R660 C604
82k 0.068u
C605
R659
3
56k 0.1u
2
R658
1
10k
C603
0.01u
C602
0.1u
N
3.30V
L609
C663
1u
D
D6
VCC1
VS S1 D1
D[1]
IC605
DQ1
C6 A[5]
A 5
C4
NC1
SRAM C3
D[5]
DQ5
C1 D[0]
D Q 0
B6
A[7]
A7
B5 A[4]
A4
B4
D[4]
33MSRAM
I2CSDA
I2CCK
0.01u
D
2
V S S
1
V I N
RESET
TV2
TV1
ASQAPC
ASQ
R662 R664
BEEP
15k
10k
R668
VOICE
10k
RXAF
O
2
3
/WR
SB2
33M
33A
4
5
SB2
VCO_MOD
50C
6