Kenwood TK-7180H Service Manual page 94

F
TX-RX UNIT (X57-6980-XX) (B/3)
IGN
SBC
4.99V
5M
5M
PC
R474
R412
RTCL/EEPCL
R433
*
DM
R414
RTDT/EEPDAT
TXC
DMUTE
AM2
RST
XOUT
XIN
5M
R418
R419
PSW
R420
INT
R421
INTRA
SHIFT/MODEL
R657
DT
R422
SPSTB
R405
SOE
R406
AIO5
R411
AIO9
D423
R407
VOLTAGE
PROTECTION
RXD2
1SS388
TXD2
TXD1
RXD1INT
1SS388
RXD1EXT
1SS388
SCSW
RXC
CK
MIC
ME
OPT6
G
SCHEMATIC DIAGRAM
HSDIN
HSDO
DSTB
LSDIN
DT
CK
C413
4.99V
1000p
C412
0.1u
1
VREF
2
AVCC
3
SBC
4
RXC
5
TXC
6
PC
7
HSDO
470k
8
STSW
470k
9
RTCL/EEPCL
10
HSDIN
11
DM
10k
12
RTDTEEPDAT
13
BYTE
R658 0 14
CNVSS
15
D
DMUTE
16
AM2
17
R424 1k
RST
R425 1k 18
XOUT
19
DGND
20
XIN
21
VCC1
22
47k
NMI
47k
23
PSW
330k
24
R432 1k
INT
47k
25
INTRA
26
SHIFT/MODEL
4.7k
27
BEEP
47k
28
SPSTB
470k
29
SOE
470k
R426
1k 30
AIO5
470k
R427 31
1k
AIO9
32
10k
DSTB
33
LSDO
D423
34
R428 0
RXD2
R429 470 35
TXD2
36
R430 470
TXD1
37
VCC1
R410
38
R431 0
RXD1
10k
D417
D418
D417,418
ISOLATOR
BEEP
R525 R511
1.5k
1.5k
D D
H
TK-7180H/7182H
EMTON
TCLK/DTRDO
AFRTM
DGND
VCC2
MICROPROCESSOR
OPT6
IC404
*
RST2/LCDCS
LCDCLK
LCDDO
I
R462
*
D
102
101
AM1
100
T/R T/R
99
R467 0
MM2
98
TCLK/DTRDO
CP407
97
1k
AFRTM
96
R482
IGN
95 47k
A0 A0
CP408
94
1k
A1
A1
93
A2
A2
CP409
92
1k
A3 A3
91
A4 A4
CP410
90
1k
A5
A5
89
A6
A6
CP411
88
1k
A7 A7
87 C423
86 R469
1u
D
A8
A8
85 1k
84
83
R465 47k
NC
82 D
R470 1k
PCK PCK
81
PLE
PLE
CP412
80
1k
UL
UL
79
A9
A9
CP413
78
1k
A11
A10
77
A11
A11
CP414
76
1k
A12
A12
75
A13 A13
CP415
74
1k
A14 A14
73
A15
A15
CP416
72
1k
A16 A16
71
A17 A17
CP417
70
1k
A18
A18
69
NC
68
R471 1k
CS0 CS0
67
R472 1k
RST2
66
* R463
LCDCLK
65
* R464
LCDDO
D
X57-698 2/10
J
DSTB
DT
MM2
AM1
HSDIN
HSDO
EMTON
LSDIN
LSW
MM1
BEEP
LSDO
STSW
RXC
CK
SCSW
MIC
ME
OPT6
87