Kenwood KCH-19, Service Manual

Page: 10 / 18

A
1
2
3
4
5
B C D E F G
(No.RA019<Rev.001>) 2-2 2-2 (No.RA019<Rev.001>)
SUB (DISPLAY) UNIT (XC3-0020-20)
->
->
->
TRANSCEIVER MAIN UNIT
(A/2)
TRANSCEIVER MAIN UNIT
(A/2)
Q3,4,6
DC SW
DC SW
CONTROL
LOGIC
I/O EXPANDER
IC9
LOGIC CONTROL
IC4
ANALOG SWITCH
CONTROL
LOGIC
SENSOR
ILLUMINANCE
IC6
IC2
(30LCD)
REGULATOR
VOLTAGE
IC1
REGULATOR(50M)
VOLTAGE
D28,29,30,32
PROTECTION
OVER VOLTAGE
D25
PROTECTOR
SURGE
D22
PROTECTION
OVER VOLTAGE
D20
PROTECTION
OVER VOLTAGE
LED
LED LED
LED LED LED
LED LED
LED
LED LED
LED
PROTECTION
OVER VOLTAGE
D27,31
D23,24,26,
D1,2
OVER VOLTAGE PROTECTION
DRIVER
LED
13.60V
1.82V
2.99V
5.31V
4.99V
3.28V
2.99V
3.28V
3.29V
1.82V
5.32V
13.60V
SUB UNIT (DISPLAY)(XC3-002)
D27,D32
D28,D29,D30
GND
GND
D1,D2
Analog SW
TXD to RJ45
PTT
to Radio
->
5.0V->3.3V
3.3V->5.0V
BUSSWC
HIGH=2 USB
LOW=1 UART/BLC
GND
R_SET0
R_SET1
R_SET2
ME
MIC
AFO-
AFO+
/PSW
/PTT
TXD
RXD
GND
DM/KVL
33M
GND
USB_D-
USB_D+
GND
I2CDT
I2CCK
/KEYINT
54M
18M
LCDRST
D[15]
D[14]
D[13]
D[12]
D[11]
D[10]
D[9]
D[8]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
/CS
A[23]
/WR
/RD
GND
NC
NC
Q3,Q4,Q6
EMG
PSW
THREE COLOR
SP
INT
RJ45
LCD
D23,D24,D26
30LCD
50M
/PSW
KEYi1_2
KEYi0_2
KEYi3_2
BLCSW
PTT/TXD_3
/RD
/WR
/CS
ADD[23]
LCDRST
LCDRST
MIC_3
BLC_4/D+2
DM/KVL_3
ME
18M
18M
33M
33M
LCDBLC
LCDBLC
BUSSWC
BLC_3
50M
50M
/PSW
I2CDT
D+ D-
RXD_50V
KEYo0
KEYo1
KEYo2
BLC
/KEYINT
LED_R
ME_3
KEYBLC
KEY
i3
LED_G
/TXDEN
LED_B
LED_R
LED_G
LED_B
/EMG
KEY
o2
KEY
o1
KEY
o0
54M
54M
LCDRST
RXD_33V
ME
TXD
MIC
LEDA
/RD
/WR
ADD[23]
/CS
DAT[0]
DAT[1]
DAT[2]
DAT[3]
DAT[4]
DAT[5]
DAT[6]
DAT[7]
DAT[8]
DAT[9]
DAT[10]
DAT[11]
DAT[12]
DAT[13]
DAT[14]
DAT[15]
PTT/TXD
PTT/TXD
MIC
SB
/PTT
DM/KVL
/EMG
KEYi2_2
BLC_2
HOOK/RXD/D-
BLC_4/D+
KEY
i0
I2CCK
/KEYINT
/KEYINT
/KEYINT
/KEYINT
RXD_33V /PTT TXD
DAT[1]
DAT[0]
SPG SP+
KEY
i0
DAT[15]
DAT[14]
DAT[13]
DAT[12]
DAT[11]
DAT[10]
DAT[9]
DAT[8]
DAT[7]
DAT[6]
DAT[5]
DAT[4]
DAT[3]
DAT[2]
KEYBLC
SP+
KEYi1
KEY
i2
KEY
i3
SPG
DM/KVL SB
KEY
i2
KEY
i1
D-
D+
E
SB_2
D
D
D
D32
1000p
C101
EMZ6.8N
D31
D30
D29
DZ2S068M
D28
VCC 5
oUTY 4
GND
3
INA
2
INB
1
TC7SZ08FE
IC12
0.1u
C73
0
R83
2.2k
R99
2.2k
R98
L11
1k
R88
1000p
C90
100p
C87
L18
L17
2.2k
R87
0
R11
0
R12
0 R7
0
R9
0
R6
0
R4
0
R5
0
R3
2.2k
R77
2.2k
R78
2.2k
R82
10k
R81
2.2k
R79
1k
R52
47k R55
47k
R54
100
R39
100
R40
100
R20
330
R21
330
R27
330
R32
330
R22
330
R28
330
R33
0
R10
0 R17
0 R19
0
R18
1k
R42
1k
R43
10k
R47
150
R48
10k R53
2.2k
R51
100 R66
0
R64
0
R71
0 R65
0
R62
0 R61
0
R60
0
R63
D 270k
R69
100
R25
330
R34
330
R30
330
R29
330
R24
100
R41
100
R31
2.2k
R49
2.2k
R26
680
R46
100
R38
330
R23
2.2k
R50
S70-0901-05
S12
S70-0901-05
S11
S70-0901-05
S10
S70-0901-05
S9
S70-0901-05
S8
S70-0901-05
S7
S70-0901-05
S6
S70-0901-05
S5
S70-0901-05
S4
S70-0901-05
S3
S70-0901-05
S1
S70-0901-05
S2
LTC014EEBFS8
Q3
Q6
Q4
IRQN
39
KPY8
38
KPX3
37
KPX2
36
VDD
35
VSS
34
SDA
33
SCL
32
DIR25
31
DIR24
30
VSS
29
KPY7
28
RESETN
27
KPX5
26
KPY4
25
KPY6
24
KPX4
23
KPY5
22
VSS
21
NC
20
VDD
19
KPX6
18
VSS
17
VDD
16
KPX7
15
VDD
14
VSS
13
KPX0
12
KPX1
11
KPY2
10
KPY3
9
KPY1
8
KPY0
7
VSS
6
KPY9
5
EXITO0
4
KPY10
3
KPY11
2
VSS
1 VDD
44
PWM2
43
PWM1
42
VDD
41
PWM0
40
TC35894FG
IC10
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CN6
L15
1000p
C50
VCC 8
G2 7
Y1 6
A2 5
GND
4
Y2
3
A1
2
G1
1
TC7WH126FK
IC9
L16
1000p
C45
1000p
C48
1000p
C46
0.1u
C67
L4
L3
0.1u
C68
1u
C63
0.01u
C65
0.1u
C64
100p
C56
100p
C55
B30-2365-05
D14
B30-2365-05
D4
B30-2365-05
D9
B30-2365-05
D15
B30-2365-05
D5
B30-2365-05
D10
4
3
2
1
CN2
0.1u
C1
1
100p
C16
0.1u
C24
100p
C9
0.1u
C18
100p
C22
100p
C2
4.7u
C8
0.1u
C5
SPC10501A01
D2
D1
100p
C32
100p
C29
L1
1u
C54
STBY
3
VIN
4
GND 2
VoUT 1
BU30TD2WNVX
IC2
1u
C58
L2
1u
C59
1u
C57
VoUT 3
VDD 4
GND 2
CE 1
MM3404A50URE
IC1
SCL 5
DVI 4
SDA
3
GND
2
VCC
1
BH1721FVC
IC6
VCC 8
G2 7
Y1 6
A2 5
GND
4
Y2
3
A1
2
G1
1
TC7WT125FUF
IC3
0.1u
C62
0.1u
C69
RB521CM-30
D22
DZ2J062(M)
D20
VCC 10
S 9
D+ 8
D- 7
oE 6
GND
5
2D-
4
2D+
3
1D-
2
1D+
1
BD11600NUX
IC4
0.1u C66
2
1
CN5
1000p
C76
1000p
C79
SPC10501A01
D23
1
2
3
4
5
6
7
8
J1
1000p
C70
D26
MINISMDC020F
D25
0.1u
C71
D27 D24
L14
L4 8
L3 7
L2 6
L1 5
VIN
4
ISET
3
GND
2
EN
1
BD1754HFN
IC8
1u
C74
0.1u
C83
0.1u C75
L5
LED4
38
LED3 37
LED2 36
LED1
35
LEDA
34
IM0 33
RESX
32
CABC
31
DB17
30
DB16 29
DB15
28
DB14
27
DB13
26
DB12 25
DB11
24
DB10
23
DB8 22
DB7 21
DB6
20
DB5
19
DB4 18
DB3
17
DB2
16
DB1
15
CSX 14
DCX
13
WRX
12
RDX
11
IOVCC 10
IOVCC
9
VSSD
8
VSSD
7
VSSD 6
VCC
5
VCC
4
VSSA 3
VSSA 2
VSSA
1
CN4
0.1u
C84
B30-2365-05
D6
6 5
2
4
1 3
B30-2364-05
D21
B30-2365-05
D11
100p
C52
B30-2365-05
D16
B30-2365-05
D7
B30-2365-05
D12
5
3
2
1 6
4
SSM6N37FE
Q2
100p
C53
100p
C44
SCHEMATIC DIAGRAM