Kenwood NX-210 Service Manual page 77

F G
TX-RX UNIT(X57-7710-10)(A/2)
CN337
1 2
3 4
/LCDRST
5 6
/WR
VLCDLED
7 8
A0
9 10
33M
11 12
D0
13 14
D1
15 16
D2
17 18
D3
19 20
D4
21 22
D5
23 24
D6
25 26
D7
27 28
LCDCNT
29 30
KEYO0
KEYO1
31 32
KEYO2
KEYO3
33 34
/KEYI0
/KEYI1
35 36
/KEYI2
/KEYI3
37 38
/KEYI4
/PTT
39 40
VKEY
41 42
43 44
5A
45 46
INTMIC
47 48
ME
49 50
CN313
20 19
18 17 R344
R345
16 15 R346
R347
R348
14 13
R349
R350
12 11
10 9
R352
0 R353
8 7
R363
R357
6 5
R364
R365
4 3
R366
2 1
PTT2
CN318
PTT1
CN319
RSSI
CN320
RXD
CN323
TXD
CN324
MAN DOWN
CN321
GND
CN322
MAN DOWN
CN325
GND
CN326
H
SCHEMATIC DIAGRAM
C301 47p
C305 47p
BUS SW
BUS SW
IC101
IC104
TC74LCX245FK TC7WZ245FK-F
11 10 5
B8 GND B2
12 9 D[0] 6
B7 A8 B1
13 8 7
D[1]
B6 A7 G
14 7 D[2] 8
B5 A6 VCC
15 6
D[3]
B4 A5
16 5 D[4]
B3 A4
C126
17 4
D[5]
B2 A3
18 3
D[6]
0.1u
B1 A2
19 2 D[7]
oE A1
20 1
VCC DIR
C116 0.1u
C315 47p
KEYO0
C319 47p
KEYO1
C320 47p
KEYO2
C321 47p
KEYO3
C322 47p
/KEYI0
C323 47p
/KEYI1
C324 47p
/KEYI2
C325 47p
/KEYI3
C326 47p
/KEYI4
C327 47p
C318 47p
C316 47p
C314 47p
C302 47p
0 HD7
0
BFSR2
0 /SCSS
0 BDR2
0
BDX2
0 BCLKR2
0
0
INT3
0
0
BCLKX2
0 RXD0
0
0
SCTXD
R306
120
I
/LCDRST
LCD BACKLIGHT SW
Q102
2SA1362-F(GR)
LCD
BACKLIGHT
SW
LCD BACKLIGHT SW
Q104
2SC4617(S)
/CS4
4
GND
3 12KEY BACKLIGHT SW
/WR
A2
2
A1
1
DIR
12KEY
BACKLIGHT
SW
L103
12KEY BACKLIGHT SW
Q105
SSM3K15TE(F)
INTMIC
ME
SCTAMI
33M
PSRPLL
LCDCNT
HD5
J
NX-210
R131
SB2
0
R128
5A
330
Q101
2SA1832(GR)F
12KEY BACKLIGHT SW
Q103
2SC4617(S) R124
330
R123
0
77
X57-771 (A/2) 1/11
A[0]
5A
INTMIC
ME
SB2
SCTAMI
33M
PSRPLL
LCDCNT
HD5
RSSI
RXD
TXD