Kenwood TK-7160 Service Manual page 48

K
TK-7160/7162
PRE DRIVE AMP
RD00HVS1
C509
15p
8T
TX/RX
UL
8TC
SQIN
RSSI
NARROW
WIDE
CK
DT
PLLE
DTRLOADN
STD
TCLK/DTRDO
TDATA/DTRCLK
DETSW DIO
SCRSW
HSDSW RDF/FD
AFM
MICMT1 DIR
LSDI
TEMP2
TEMP1
BSYLED
TXLED
HSDI
DTMF/MSK
EVLLD
QT/DQT
ABS
MICEM
LIMSW
44
X57-710 3/4
L
SCHEMATIC DIAGRAM
Q502
T:7.6V
C516 R517
22
27p
TEMP1
TEMP2
TEMP DTECT
76
8RC
77
8TC
78
SBC
79
LIMSW
80
DTRLOADN
81
STD
82
TCLK/DTRDO
83
TDATA/DTRCLK
84
DIO
85
RDF/FD
86
DIR
87
HSDI
88
R126 LSDI
89
1k
TEMP2
R127 90
TEMP1
1k 91
BATT
92
RSSI
93
SQIN
94
R130 0
AVSS
95
NC
L101
96
VREF
97
AVCC
4.97V
98
NC
99
BSYLED
100
TXLED
BATT
DETECT
IGNITION
Q84
KRC414RTK
R:3mV
R96 R94
1M 1k
M
POWER MODULE
IC502
RA30H1317M-31
R521
1k
R523
100
VOLTAGE
PROTECTION
R124
R125
47k
0
C102
0.1u
C101
1000p
MICROPROCESSOR
IC101
X86
L77-1970-05
R91
0
12.0MHz
Q82,83
BEAT SHIFT
Q83 Q82
2SK1830 2SK1830
Q81
RT1N441U
OVER VOLTAGE
DETECTION
N
TX-RX UNIT (X57-7102-70)
C555
18p
L503
COMPARATOR(APC)
IC651
TA75W01FU
8
1
VCC
2 7
R653
3 6
4 5 0
VEE
R652
10k
R659 R522 R661 R662
10k 0
47k 0
1SS355
50
AFM
CP2 1k
49
FNC8
FNC8
48 FNC7
FNC7
CP3 1k
47
FNC6
FNC6
FNC5
46
FNC5
CP4 1k
45
FNC4
FNC4
44 FNC3
CEFLS
43
FNC3
42
HSDSW
R115
41
DETSW
40 47k
SCRSW
39 R113
EMPFLS
38
47k
NC
37
RXD
NC
36 1k
R112
HOOK
HOOK
35
PTT
PTT
34 TXD
RXD
33 R111
1.5k
R110
TXD
47k
32 47k
R109
BSYFLS
31 47k
R108
CLKFLS
30
CP1 1k
FNC2
29 FNC2
FNC1
FNC1
28
EEPDT
27
EEPCK
26
EEPWP
IC81
AT24C12810SU18
1 8
VCC
A0
2 7
WP
A1
D81,82 3 6
A2 SCL
OVER VOLTAGE
4 R81
5
DETECTION 4.69V
GND SDA
10k
EEPROM
R84 0
R83 0 R82
10k
1000p
C81
O
T:7.94V
D610
8TC
8RC
SAMPSW
SPM
5M
5M
INT
RESET
SBC