Tx-Rx Unit (X57-6982-71) - Kenwood TK-7180 Service Manual

A
TK-7180/7189
TX-RX UNIT (X57-6982-71) (B/3)
1
CN802 L411
+B
L410
CN803
GND
VOLTAGE
PROTECTION
T:7.46V
R:7.91V
2
CN804
R821
1
IGN
1M
2
GND
S-80942CNNBG9C
1
CN429
30
SPO
4.99V 2
29
SPO
28
VOLTAGE
SPO
DETECTOR
(CPU RESET)
27
3
SPO
26
SPO
C478 100p
25
SPO
24
C487 1000p
GND
23
8C
22
SB
21
SB
C481 1000p
20
NC
1000p
C490
19
PSW
18
GND
17
4
GND
C498 100p
16
MIC
C500 100p
15
ME
14
1000p
C502
GND
13
PSENS
C504 1000p
12
RST2
R659
11
(LCDRST)
R660
10
(LCDDI)
R661
9
(LCDDO)
8
GND
C515 1000p
7
5
SHIFT/MODEL
C516 1000p
6
5C
5
NC
4
TXD
3
RXD
R662
2
GND
1
(DM)
6
7
66
X57-698 1/9
B
SCHEMATIC DIAGRAM
D802
DC REVERSE
CONNECTION
PROTECT
D801
VOLTAGE
SB CONTROL SW
PROTECTION
VOLTAGE
DETECTOR(INT)
VOLTAGE
REGULATOR
/8.5V
Q812
DTC114TE
8.83V
IGNITION SENS
CONTROL SW
IC801
4
IC803 T:7.96V
VSS oUT
TA7808F
R:7.97V
1 2
IN OUT
3
GND
VDD
CD
3
IC803
VOLTAGE
REGULATOR/8V T:7.96V
Q811
R:7.97V
DTC114EE
CPU RESET SW
SPO
8C
SB
R825
PSW
1k
PSENS
RST2
0
R572
LCDRST
0
0
R574
LCDDI
0
0
R575
LCDDO
0
R577
0
5C
TXD
RXD
0
R591
DM
0
CN403
C
+B
C822
470p
T:12.7V
R:13.5V
F801
Q810
5A
2SJ645
SB
F53-0278-05
SB SW
T:7.60V
R:8.09V
Q802
DTC114EE
Q807
DTC114EE
SB CONTROL SW
R820
SBC
47k IGN
IC805
8.21V 4.99V
NJM78L05UA
3 1
IN OUT 5M
COM
Q801
2
2SC2873(Y)
VOLTAGE VOLTAGE
PROTECTION REGULATOR/5V
D805
02CZ9.1(X,Y)
5M
VOLTAGE
REGULATOR/5V
8C
IC807
XC6201P502PR
3 1
VIN VOUT 5E
VSS
8T SW
T:7.83V
2
Q803
12A02CH
8T
8T CONTROL SW
Q806
DTC114EE
T:7.2V
T:4.95V
R:7.95V
R:0.00V
8R SW
R:7.95V
Q804
12A02CH
8R
8R CONTROL SW
Q808
DTC114EE
T:7.94V
R:7.25V
IC804 5.00V
TA7805F
2
1
IN OUT
GND
3
T:0.00V
R:4.98V
5R SW
VOLTAGE
Q805
REGULATOR/5V
12A02CH
R813
4.7k
4.28V
Q809
DTC114EE
5R CONTROL SW
D
D402
1SS388
5M
D402-404
RTC BATTERY
CONTROL
D403
1SS388
D
IC402
4.99V
RV5C386A
1
10
VDD 32KOUT
9 2 CP401
SCL
OSCIN
3
8
SDA
OSCOUT
4
7 100
CLKC INTRB
5
6
INTRA VSS
RTC PROCESSOR
INTRA
INT
RST
EEPROM
IC401
AT24256N10SU27
4 5
GND SDA
3 6
NC SCL
2 7
A1 WP
1 8 4.99V
A0
VCC
C410
0.1u
D
5M
BEAT SHIFT SW
Q402
DTC114YE
D
X404
L77-1950-05
5C
5R
5M
IC403
SHIFT
BU4094BCFV
REGISTER
16
1
STRB VDD
15
2
OE
DATA
14
3
CLK Q5
4 13
AO1 Q1 Q6
12
5
Q7
PA Q2
11
6
Q8
HOR Q3
7 10
Q4 Q'S
8 9
VSS QS
C407 0.01u
D
AO2
D421,422
VOLTAGE
PROTECTION
D421
1SS388
D422
1SS388
E
IGN
SBC
TXC
RTCL/EEPCL
RTDT/EEPDAT
RST
XOUT
XIN
C411
5M
0.1u
INT
INTRA
SHIFT/MODEL
DT
SPSTB
SOE
4.99V
GSW
CFSW
SCSW
RXC
CK
MIC
ME
OPT6
R823
47k
R445
10k
R446
10k