Kenwood TK-2180 Service Manual page 58

F
TX-RX UNIT (X57-6932-71)
5T
5C
5RC
RESET
PSW
INT
5M
S_DET
AUX OFF:4.95V
ON:0V
CPU_DGND
AUX_Key
CPU_VCC
S400
ORG
RD
WR
R504
0
R728
CSO
L502
A[18]
A[17]
A[16]
A[15]
A[14]
A[13]
A[12]
A[11]
A[10]
R724
1k
LD A[9]
R725 A[8]
PLE
330
PCK
R506
R726
330
0
CP506
A[7]
1k*2
A[6]
CP507
A[5]
1k*2
A[4]
CP508
A[3]
1k*2
A[2]
CP509
A[1]
1k*2
A[0]
R505
CPU_VCC
47k
SAVE
R525
CPU_DGND
PTT
5TC
LCDRS
DT
MIC
5M_CHARG
BATT_LEVEL
5CNS
5R
SBC
B
VOL
LEDR
LEDG
KI2
KI1
CLK
SPSTB
G
SCHEMATIC DIAGRAM
S DETECTOR
IC505
TC7W53FK
CP511
330*2
65
BTSE/VOX
1k
66
LCDRST
67
LCDCS
68
CS0
69
CP500
A19
1k*2
70
A18
71
A17
CP501
72
1k*2
A16
73
A15
CP502
74
A14
1k*2
75
A13
76
CP503
A12
1k*2
77
A11
78
A10
CP504
79
1k*2
A9
80
UL
CP505
81
1k*2
PLE
82
MICROPROCESSOR
PCK
83
BB_SFT
84
OPT6 30625MGP169GU
85
VCC2
86
C505
A8
1u
87
DGND
88
A7
89
A6
90
A5
91
A4
92
A3
93
A2
94
A1
95
A0
96
PTT
97
AFRTM
98
TCLK/DTRDO
99
SAVE
100
T/R
101
AM1
102
LCDRS
1k
H
C516
0.01u
R:7.49V
INT SW
T:7.48V
Q502
SSM3K15TE
R:0V
T:0.13V
C734
22p
C757
4700p
R513 1k
R510
47k
38
37
VCC1
36
TXD1
35
KEY2
34
KEY1
33
LSDO
32
DSTB
31
LEDG
30
LEDR
29
VCO ADJ
28
SPSTB
27
BEEP
26
SHIFT/MODEL
25
INTRA
24 R733
INT
23
1k
PSW
22 R735
NMI
21
47k
VCC1
20
IC502 XIN
19
DGND
18
XOUT
17
RESET
16
AM2
15
DMUTE
14
CNVSS
13
BYTE
12
RTDT/EEPDAT
11
MAN-DN IN
10
HSDIN
9
RTCL/EEPCL
8
STSW
7
HSDO
6
APC/TV2
5
5TC
4
5RC
3
SBC
L503
2
AVCC
1
VREF
R784
47k
5TC
SBC
I
TK-2180
R:0V
T:0.13V
CP517
DTRLOAD
1k*2
STD
CP521
TDATA(10)
1k*2
DI/O
DIR(14)
R758 47k
4.7k
R514
CP519
CP606
10k*2
1k*2
C755
R780 1u
C508
4700p
10k
CP605
330*2
R769
1k
CP518
47k*2
C507
1u
R732
1k
R523
0
R731 47k
R515
1k
R528 470k
R527 47k
LEDR
LEDG
KI2
KI1
SPSTB
J
5T
DSW
APCSW
5C
MMUTE
VOX
LSW
LSDO
BEEP
BSHIFT
XIN
XOUT
CPU_VCC
RTDT
HSDIN
CPU_DGND
LSW
INTRA
DSTB
W/N
AM2
HSDOUT
5RC
LSDIN
THP/VCOADJ
ASQL
T/R
DMUTE
DT
MIC
5M_CHARG
5CNS
5R
APC/TV2
B
RXD
TXD
RXD1
5M
CLK
53
X57-693 2/8