Kenwood KCH-19 User manual

SERVICE MANUAL
COPYRIGHT © 2014 JVC KENWOOD Corporation No.RA019<Rev.001>
2014/11
B5B-7170-00
CONTROL HEAD KIT
RA019<Rev.001>201411SERVICE MANUALB5B-7170-00
KCH-19
COPYRIGHT © 2014 JVC KENWOOD Corporation
Note :
Lead free solder used in the board (material : Sn, Ag, In, Bi, melting point : 227 Centigrade)
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
T
his product complies with the RoHS directive for the European market. This product uses Lead Free solder.

1-2 (No.RA019<Rev.001>)
Document Copyrights
Copyright 2014 by JVC KENWOOD Corporation. All rights reserved.
No part of this manual may be reproduced, translated, distributed, or transmitted in any form or by any means, electronic, mechan-
ical, photocopying, recording, or otherwise, for any purpose without the prior written permission of JVC KENWOOD Corporation.
Disclaimer
While every precaution has been taken in the preparation of this manual, JVC KENWOOD Corporation assumes no responsibility
for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained herein.
JVC KENWOOD Corporation reserves the right to make changes to any products herein at any time for improvement purposes.

(No.RA019<Rev.001>)1-3
SECTION 1
PRECAUTION
This service manual does not describe PRECAUTION.
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 CIRCUIT DESCRIPTION
LCD Circuit
The LCD module is connected to the connector (CN4) of the Sub (Display) unit. The LCD module is controlled using parallel interface
(EMIF) from the MPU (IC706) of the transceiver main unit. The backlight of the LCD is controlled by the backlight driver (IC8). The
backlight driver (BD1754HFN) has a single-line digital control interface (UPIC) that can control the power ON/OFF and LED current
value through the EN pin. The backlight driver is controlled by I/O Expander (IC10).
Indicator LED Circuit and Key Backlight
Indicator LED and key backlight LED are controlled by I/O Expander (IC10). Indicator LED is consist of 3 color (Red, Green, Blue).
Key Detection Circuit
IC10 is I/O port expander with keypad matrix decoder. It handles key scanning and flag the MPU (IC706) of the transceiver main
unit via an interrupt line when key events have occurred. It communicates with the MPU via I2C serial communication.
Light Sensor Circuit
Light sensor (IC6) senses intensity of ambient light. The intensity value of ambient light is converted to digital signal and provided
to the MPU (IC706) of the transceiver main unit via I2C serial communication.
Power Supply Circuit
The battery voltage (SB) is provided from the transceiver main unit via SB and SP interface connector (CN2). The battery voltage
(SB) goes to 8 pin interface connector (J1). Other power supply (54M, 18M, 33M) is provided from the transceiver main unit via 50
pin interface connector (CN6). 54M outputs 5.36V and goes to illumination circuit, AVR_IC (IC1). IC1 (50M) outputs 5.0V. 18M out-
puts 1.8V and goes to LCD module. 33M outputs 3.3V and goes to AVR_IC (IC2). IC2 (30LCD) outputs 3.0V.
Fig.1 Power supply circuit
54M
illumination circuit
IC1
50M Level Shift (3.3V >> 5.0V),
Analog SW
CN6
LCD Module I/O
18M
I/O Expander For 3.3V,
Light Sensor,
Level Shift (5.0V >> 3.3V)
33M
LCD Module VDD
IC2
30LCD
CN2
SB
8pin_interface_connector

1-4 (No.RA019<Rev.001>)
2.2 COMPONENTS DESCRIPTION
2.2.1 SUB (Display) unit (XC3-0020-20)
2.3 TERMINAL FUNCTION
2.3.1 Sub (Display) unit (XC3-0020-20)
Ref.No Part Name Description
IC1 IC Voltage regulator (50M)
IC2 IC Voltage regulator (30LCD)
IC3 IC Logic control
IC4 IC Analog SW
IC6 IC Illuminance sensor
IC8 IC LED driver
IC9 IC Logic control
IC10 IC I/O expander
IC12 IC Logic control
Q2 FET DC SW
Q3, 4 Transistor DC SW
Q6 Transistor DC SW
D1, 2 Zener diode Overvoltage protection
D4~7 LED LED
D9~12 LED LED
D14~16 LED LED
D20 Zener diode Overvoltage protection
D21 LED LED
D22 Diode Overvoltage protection
D23, 24 Zener diode Overvoltage protection
D25 Varistor Surge protector
D26~32 Zener diode Overvoltage protection
Pin No. Name I/O Function
CN2 (to Main unit A/2 CN900 of transceiver)
1 SP+ I Speaker output
2 SPG - Speaker ground
3 GND - Ground
4 SB I Switched power supply
CN4 (LCD)
1 VSSA - Ground
2 VSSA - Ground
3 VSSA - Ground
4VCC O3Voutput
5VCC O3Voutput
6 VSSD - Ground
7 VSSD - Ground
8 VSSD - Ground
9 IOVCC O 1.8V output
10 IOVCC O 1.8V output
11 RDX O LCD driver RD signal
12 WRX O LCD driver WR signal
13 DCX O LCD driver data/command switch
signal
14 CSX O LCD driver chip-serect signal
15 DB1 I/O LCD driver data output
16 DB2 I/O LCD driver data output
17 DB3 I/O LCD driver data output
18 DB4 I/O LCD driver data output
19 DB5 I/O LCD driver data output
20 DB6 I/O LCD driver data output
21 DB7 I/O LCD driver data output
22 DB8 I/O LCD driver data output
23 DB10 I/O LCD driver data output
24 DB11 I/O LCD driver data output
25 DB12 I/O LCD driver data output
26 DB13 I/O LCD driver data output
27 DB14 I/O LCD driver data output
28 DB15 I/O LCD driver data output
29 DB16 I/O LCD driver data output
30 DB17 I/O LCD driver data output
31 CABC - No connection
32 RESX O LCD driver reset signal
33 IM0 O Interface mode select
34 LEDA O 54M output (LED light anode)
35 LED1 I LED light cathode 1
36 LED2 I LED light cathode 2
37 LED3 I LED light cathode 3
38 LED4 - No connection
CN5 (Internal speaker)
1 SPG - Speaker ground
2 SP+ O Speaker output
CN6 (to Main unit A/2 CN749 of transceiver)
1 GND - Ground
2 R_SET0 O Radio setting signal 0
3 R_SET1 O Radio setting signal 1
4 R_SET2 O Radio setting signal 2
5 ME - MIC ground
6 MIC O MIC signal output
7 AFO- I AF signal input minus
8 AFO+ I AF signal input plus
9 /PSW O Detection signal input of power
switch
10 /PTT O PTT output
11 TXD I Serial data input
12 RXD O Serial data output
13 GND - Ground
14 DM/KVL I/O MIC data detection
15 33M I 3.3V input
Pin No. Name I/O Function

(No.RA019<Rev.001>)1-5
16 GND - Ground
17 USB_D+ I/O USB0 PHY data plus
18 USB_D- I/O USB0 PHY data minus
19 GND - Ground
20 I2CDT I/O I2C serial data
21 I2CCK I I2C serial clock
22 /KEYINT O Key state change signal
23 PRST I LCD driver reset signal
24 /RD_LCD I LCD driver Read signal
25 /WR_LCD I LCD driver Write signal
26 DC I LCD driver data/command switch
signal
27 /CS_LCD I LCD driver chip-serect signal
28 D[0] I/O LCD driver data input
29 D[1] I/O LCD driver data input
30 D[2] I/O LCD driver data input
31 D[3] I/O LCD driver data input
32 D[4] I/O LCD driver data input
33 D[5] I/O LCD driver data input
34 D[6] I/O LCD driver data input
35 D[7] I/O LCD driver data input
36 D[8] I/O LCD driver data input
37 D[9] I/O LCD driver data input
38 D[10] I/O LCD driver data input
39 D[11] I/O LCD driver data input
40 D[12] I/O LCD driver data input
41 D[13] I/O LCD driver data input
42 D[14] I/O LCD driver data input
43 D[15] I/O LCD driver data input
44 18M I 1.8V input
45 GND - Ground
46 GND - Ground
47 54M I 5.4V input
48 GND - Ground
49 NC - No connection
50 NC (IGN) - No connection (Ignition sense in-
put)
J1 (MIC jack)
1 DM/KVL_3 I/O MIC data detection
2 HOOK/RXD/D-2 I/O Hook detection / Serial data input
/ USB PHY data minus
3 MIC_3 I MIC signal input
4 ME_3 - MIC ground
5 PTT/TXD_3 I/O PTT input / Serial data output
6GND -Ground
7 SB_2 O Switched power supply
Pin No. Name I/O Function
8 BLC_4/D+2 I/O Back light control signal / USB
PHY data plus
Pin No. Name I/O Function

1-6 (No.RA019<Rev.001>)
SECTION 3
DISASSEMBLY
3.1 Precautions for Disassembly
3.1.1 Removing the speaker hardware fixture (J2B-0023-
00) and holder (J1K-0019-00)
(1) Remove the speaker lead from the holder hook. <1>
(2) Remove the speaker connector from the display unit con-
nector (CN5). <2>
(3) When removing the speaker hardware fixture, insert a flat-
head screwdriver at the position shown in Figure 1-1 and
tilt it in the direction shown by the arrow. <3>
(4) To remove the holder, insert a flat-head screwdriver into
tab of the holder and tilt it in the direction shown by the ar-
row. <4>
Fig.1-1
Fig.1-2
3.2 Precautions for Reassembly
3.2.1 Installing the holder (J1K-0019-00) and speaker hard-
ware fixture (J2B-0023-00)
(1) Insert two tabs of the holder (J1K-0019-00) into the hollows
in the top of the panel. <1>
(2) Push the two tabs of the holder in on the opposite side of
those in step 1 above and fit them into the hollow in the bot-
tom of the panel. <2>
Note:
Push in the holder until it snaps in place.
(3) Install the speaker holder onto the panel. <3>
Note:
To improve water resistance, fit the panel into the groove
of the holder.
(4) Place the speaker into the speaker holder.
Note:
The speaker must not ride on the holder rib.
(5) Place the spacer on the speaker.
(6) Insert the hardware fixture (J2B-0023-00) into the hollow of
the panel as shown in Figure 2-3, then push two parts of
the hardware fixture and fit it into the hollow of the top of the
panel. (Fig. 2-3 <4>)
Note:
Push in the hardware fixture until it snaps in place.
(7) Insert the speaker connector into the display unit connector
(CN5).
(8) Place the speaker lead on the holder hook.
Fig.2-1
Fig.2-2
Fig.2-3
<2>
<1>
<3>
CN5
<4>
<1>
<1> <2>
Spacer
Speaker
Speaker holde
r
<3>
<4>

(No.RA019<Rev.001>)1-7
SECTION 4
ADJUSTMENT
This service manual does not describe ADJUSTMENT.
(There is no adjustment item on KCH-19.)
SECTION 5
TROUBLESHOOTING
This service manual does not describe TROUBLESHOOTING.

MEMO

(No.RA019<Rev.001>) 2-1 2-1 (No.RA019<Rev.001>)
B
A
54321
B
A
54321
R99
R88
R87
R86
R83
R82
R81
R79
R78 R77
R71
R66
R65
R64
R63
R62
R61
R60
R55
R54
R53
R52
R51
R50
R49
R48 R47
R46
R43
R41
R40 R39
R38
R31
R26
R25
R20
R19 R18
R17
R12
R11
R10
R9
R7
R6
R5
R4
R3
Q6
Q4
Q3
Q2
L18
L17
L16
L15
L11
L4
L3
L2
D32
D31
D30
D29
D28
D27
D26
D25
D24
D23
D22
D20 D2 D1
C101
C90
C87
C84
C79
C76
C73
C71
C70
C69
C68
C67
C66
C65 C64
C63
C62
C59
C57
C56 C55
C53
C52
C50 C48
C46
C45
C44
C43 C42
C32
C29
C24
C22
C11
C9
C8 C5
C2
MY
J7C-0038-00
IC12
IC4
XC3-002
CN5
XC3-007
IC1
IC3
IC9
IC10
CN2
CN6
R98
R69
R42
R34
R33
R32
R30
R29 R28
R27
R24
R23
R22
R21
L14
L5
L1
D21
D16
D15
D14
D12
D11 D10
D9
D7
D6
D5
D4
C83
C75
C74
C58
C54
C18
C16
S4
$IC12
$IC11
IC2
S12 S10
S11 S6 S8
IC8
S7 S5
CN4
S1 S2
S3
S9
IC6
J1
SUB (DISPLAY) UNIT (XC3-0020-20)
--- Component side view (J7C-0038-00) ---
--- Foil side view (J7C-0038-00) ---
A-1C
Side Y axis
X axis
ADDRESS TABLE OF BOARD PARTS
Each address may have an address erro
r
by one interval.
REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION
IC
IC1 B- 4B
IC2 A- 3A
IC3 B- 4B
IC4 B- 4B
IC6 A- 5A
IC8 A- 3B
IC9 B- 4B
IC10 B- 4A
IC12 B- 3B
TRANSISTOR
Q2 B- 3B
Q3 B- 5A
Q4 B- 5A
Q6 B- 5A
DIODE
D1 B- 3B
D2 B- 3B
D4 A- 1B
D5 A- 3B
D6 A- 4B
D7 A- 5A
D9 A- 1A
D10 A- 2B
D11 A- 4B
D12 A- 5A
D14 A- 1A
D15 A- 1B
D16 A- 3B
D20 B- 5B
D21 A- 5A
D22 B- 5B
D23 B- 5B
D24 B- 5B
D25 B- 5B
D26 B- 5B
D27 B- 5B
D28 B- 5B
D29 B- 5B
D30 B- 5B
D31 B- 5B
D32 B- 5B
RESISTOR
R3 B- 3A
R4 B- 3A
R5 B- 3A
R6 B- 3A
R7 B- 3B
R9 B- 3A
R10 B- 2A
R11 B- 3B
R12 B- 3A
R17 B- 2A
R18 B- 3B
R19 B- 3B
R20 B- 4A
R21 A- 1B
R22 A- 2B
R23 A- 4B
R24 A- 5A
R25 B- 4A
R26 B- 3B
R27 A- 1B
R28 A- 2B
R29 A- 3B
R30 A- 5B
R31 B- 4A
R32 A- 1A
R33 A- 1B
R34 A- 3B
R38 B- 4A
R39 B- 4A
R40 B- 4A
R41 B- 4A
R42 A- 3A
R43 B- 4B
R46 B- 5A
R47 B- 4B
R48 B- 4B
R49 B- 5A
R50 B- 5A
R51 B- 5B
R52 B- 5A
R53 B- 4B
R54 B- 4A
R55 B- 4A
R60 B- 5B
R61 B- 5B
R62 B- 5B
R63 B- 5B
R64 B- 5A
R65 B- 5B
R66 B- 5B
R69 A- 3B
R71 B- 5B
R77 B- 5A
R78 B- 5A
R79 B- 4B
R81 B- 4A
R82 B- 5A
R83 B- 4A
R86 B- 2A
R87 B- 4B
R88 B- 4B
R98 A- 3B
R99 B- 4B
CAPACITOR
C2 B- 2B
C5 B- 2B
C8 B- 2B
C9 B- 3A
C11 B- 3A
C16 A- 3A
C18 A- 3A
C22 B- 4A
C24 B- 4A
C29 B- 3A
C32 B- 3B
C42 B- 3A
C43 B- 3A
C44 B- 3B
C45 B- 3A
C46 B- 3B
C48 B- 3A
C50 B- 3A
C52 B- 4B
C53 B- 4A
C54 A- 3A
C55 B- 4A
C56 B- 4A
C57 B- 4B
C58 A- 3A
C59 B- 4B
C62 B- 4B
C63 B- 4A
C64 B- 4A
C65 B- 4A
C66 B- 4B
C67 B- 5A
C68 B- 5A
C69 B- 4B
C70 B- 5B
C71 B- 5A
C73 B- 3B
C74 A- 3B
C75 A- 3B
C76 B- 5A
C79 B- 5B
C83 A- 3A
C84 B- 3A
C87 B- 5A
C90 B- 3B
C101 B- 4A
OTHER
CN2 B- 2B
CN4 A- 3A
CN5 B- 2B
CN6 B- 3A
S1 A- 4B
S2 A- 4B
S3 A- 5B
S4 A- 5A
S5 A- 3B
S6 A- 1B
S7 A- 2B
S8 A- 2B
S9 A- 5A
S10 A- 1B
S11 A- 1B
S12 A- 1A
J1 A- 5B
L1 A- 3A
L2 B- 4B
L3 B- 4A
L4 B- 5A
L5 A- 3A
L11 B- 3A
L14 A- 3A
L15 B- 4A
L16 B- 3A
L17 B- 3A
L18 B- 3A
PRINTED CIRCUIT BOARD

A
1
2
3
4
5
BCDEFG
(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
LEDLED
LEDLEDLED
LEDLED
LED
LEDLED
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
KEYi3
LED_G
/TXDEN
LED_B
LED_R
LED_G
LED_B
/EMG
KEYo2
KEYo1
KEYo0
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+
KEYi0
I2CCK
/KEYINT
/KEYINT
/KEYINT
/KEYINT
RXD_33V /PTT TXD
DAT[1]
DAT[0]
SPG SP+
KEYi0
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
KEYi2
KEYi3
SPG
DM/KVL SB
KEYi2 KEYi1
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
2.2kR98
L11
1k
R88
1000p
C90
100p
C87
L18
L17
2.2k
R87
0
R11
0
R12
0R7
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
47kR55
47k
R54
100
R39
100
R40
100
R20
330
R21
330
R27
330
R32
330
R22
330
R28
330
R33
0
R10
0R17
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
D270k
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
C650.1u 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
C11
100p
C16
0.1u
C24
100pC9
0.1u
C18
100p
C22
100pC2
4.7u
C8
0.1uC5
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
GND2
CE1
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
S9
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
16
4
SSM6N37FE
Q2
100p
C53
100p
C44
SCHEMATIC DIAGRAM

A
1
2
3
4
5
BCD EFG
(No.RA019<Rev.001>) 2-3 2-3 (No.RA019<Rev.001>)
IC2
BU30TD2WNVX
D15
LED_G
D11
33M
IC8
BD1754HFN
D9
IC3(1/2)
TC7WT125FUF
50M
To Transceiver Main Unit (A/2)
To Transceiver Main Unit (A/2)
D7
D6
LCDRST
54M
/CS
D4
5V
VOLTAGE REGULATOR
/PSW
54M
D16
ADD[23]
54M
50M
LCDBLC
BUSSWC
54M
/TXDEN
/RD
SB(SB_2)
33M
33M
DAT[0]~DAT[15]
TXD
D-
LED1
LED2
LED3
IC4
BD11600NUX
SP
3V
VOLTAGE REGULATOR
BLC
D5
RXD_33V
SPG
HOOK/RXD/D-
/WR
IC9(1/2)
TC7WH126FK
DPDT SW
D+
RJ45 CONNECTOR
SP+
LED_R
S9
D10D12
IC3(2/2)
TC7WT125FUF
LCD Interface
BLC_4/D+(D+2)
BLC_2(BLC_3)
BLCSW
18M
KEYBLC
LED_B
33M
PTT/TXD(TXD_3)
RXD_50V
/PTT
D14
18M
IC9(2/2)
TC7WH126FK
/KEYINT
I2CCK
I2CDT
LCDRST
IC1
MM3404A50URE
LED
DRIVER
J1
CN2
CN5
CN6
Sub (Display) Unit (XC3-002)
DM/KVL(KVL_3) MIC(MIC_3) ME(ME_3)
D21
LIGHT
SENSOR
IC6
BH1721FVC
33M
CN4
KEYi2(KEYi2_2)
S4S8
IC10
TC35894FG
S10KEYi1(KEYi1_2) S6
S1
33M
S3S7
I/O EXPANDER
S5
S12
S2
KEYo1
KEYi0(KEYi0_2)
KEYo0
KEYi3(KEYi3_2)
KEYo2
/EMG
S11
Q2 (1/2)
SSM6N37FE
Q2(2/2)
SSM6N37FE
Q3
LTC014EEBFS8
Q6
LTC014EEBFS8
Q4
LTC014EEBFS8
To LCD
30LCD
SUB (DISPLAY) UNIT
BLOCK DIAGRAM

MEMO

(No.RA019<Rev.001>)3-1
PARTS LIST
[KCH-19]
* SAFETY PRECAUTION
Parts identified by the symbol are critical for safety. Replace only with
specified part numbers.
* BEWARE OF BOGUS PARTS
Parts that do not meet specifications may cause trouble in regard to safety and
performance. We recommend that genuine parts be used.
* (x_) in a description column shows the number of the used part.
- Contents -
Exploded view of general assembly and parts list
Packing and accessories
Electrical parts list
3-2
3-2
3-3

3-2(No.RA019<Rev.001>)
Exploded view of general assembly and parts list
General assembly
Block No. [M][1][M][M]
Packing and accessories
Block No. [M][2][M][M]
 Symbol No. Part No. Part Name Description Local
1 A6C-0003-10 PANEL ASSY
2 B1B-0017-00 ILLUMINATION GUIDE
3 B38-0966-05 LCD ASSY
4 B4B-0008-00 CAUTION STICKER
5 B4D-0021-00 BADGE
6 E37-1693-05 LEAD WIRE WITH CONNECTOR(SP 2P)
7 F1E-0002-00 SHADE(TX-BUSY)
8 G1D-0011-00 CUSHION(LCD-HOLDER)
9 G1D-0012-00 CUSHION(LCD-F.GLASS)
10 G5D-0015-00 PACKING(SP)
11 J1K-0018-00 HOLDER(LCD)
12 J1K-0019-00 HOLDER(PCB PANEL)
13 J2B-0021-00 MOUNTING HARDWARE(LCD)
14 J2B-0023-00 MOUNTING HARDWARE(SP)
15 K2K-0100-00 KEY TOP
16 T07-0810-05 SPEAKER
 Symbol No. Part No. Part Name Description Local
1 H1C-0026-00 CARTON BOARD
2 H5A-0217-00 ITEM CARTON CASE
SUB (DISPLAY) UNIT<03>
1
15
27
913
3
8
11
12
10
6
16
14
Block No.M1MM
5
4

(No.RA019<Rev.001>)3-3
Electrical parts list
SUB (DISPLAY) UNIT
XC3-0020-20
Block No. [0][3]
 Symbol No. Part No. Part Name Description Local
IC1 MM3404A50URE IC(MOS-IC)
IC2 BU30TD2WNVX IC(MOS-IC)
IC3 TC7WT125FUF IC(MOS-IC)
IC4 BD11600NUX IC(MOS-IC)
IC6 BH1721FVC IC(MOS-IC)
IC8 BD1754HFN IC(MOS-IC)
IC9 TC7WH126FK IC(MOS-IC)
IC10 TC35894FG IC(MOS-IC)
IC12 TC7SZ08FE IC(MOS-IC)
Q2 SSM6N37FE FET
Q3 LTC014EEBFS8 DIGI TRANSISTOR
Q4 LTC014EEBFS8 DIGI TRANSISTOR
Q6 LTC014EEBFS8 DIGI TRANSISTOR
D1 SPC10501A01 VARISTOR
D2 SPC10501A01 VARISTOR
D4 B30-2365-05 LED(WHITE)
D5 B30-2365-05 LED(WHITE)
D6 B30-2365-05 LED(WHITE)
D7 B30-2365-05 LED(WHITE)
D9 B30-2365-05 LED(WHITE)
D10 B30-2365-05 LED(WHITE)
D11 B30-2365-05 LED(WHITE)
D12 B30-2365-05 LED(WHITE)
D14 B30-2365-05 LED(WHITE)
D15 B30-2365-05 LED(WHITE)
D16 B30-2365-05 LED(WHITE)
D20 DZ2J062(M) ZENER DIODE
D21 B30-2364-05 LED(RGB)
D22 RB521CM-30 DIODE
D23 SPC10501A01 VARISTOR
D24 SPC10501A01 VARISTOR
D25 MINISMDC020F VARISTOR
D26 SPC10501A01 VARISTOR
D27 SPC10501A01 VARISTOR
D28 DZ2S068M ZENER DIODE
D29 DZ2S068M ZENER DIODE
D30 DZ2S068M ZENER DIODE
D31 EMZ6.8N ZENER DIODE
C2 CC73GCH1H101J C CAPACITOR 100PF J
C5 CK73GXR1H104K C CAPACITOR 0.1UF K
C8 C93-1810-05 C CAPACITOR 4.7UF K
C9 CC73GCH1H101J C CAPACITOR 100PF J
C11 CK73GXR1H104K C CAPACITOR 0.1UF K
C16 CC73GCH1H101J C CAPACITOR 100PF J
C18 CK73GXR1H104K C CAPACITOR 0.1UF K
C22 CC73GCH1H101J C CAPACITOR 100PF J
C24 CK73GXR1H104K C CAPACITOR 0.1UF K
C29 CC73GCH1H101J C CAPACITOR 100PF J
C32 CC73GCH1H101J C CAPACITOR 100PF J
C44 CC73HCH1H101J C CAPACITOR 100PF J
C45 CK73GBB1H102K C CAPACITOR 0.010UF K
C46 CK73GBB1H102K C CAPACITOR 0.010UF K
C48 CK73GBB1H102K C CAPACITOR 0.010UF K
C50 CK73GBB1H102K C CAPACITOR 0.010UF K
C52 CC73HCH1H101J C CAPACITOR 100PF J
C53 CC73HCH1H101J C CAPACITOR 100PF J
C54 CK73GB1E105K C CAPACITOR 1.0UF K
C55 CC73HCH1H101J C CAPACITOR 100PF J
C56 CC73HCH1H101J C CAPACITOR 100PF J
C57 CK73GB1E105K C CAPACITOR 1.0UF K
C58 CK73GB1E105K C CAPACITOR 1.0UF K
C59 CK73GB1E105K C CAPACITOR 1.0UF K
C62 CK73HB1E104K C CAPACITOR 0.10UF K
C63 CK73GB1E105K C CAPACITOR 1.0UF K
C64 CK73HB1E104K C CAPACITOR 0.10UF K
C65 CK73HBB1E103K C CAPACITOR 0.10UF K
C66 CK73HB1E104K C CAPACITOR 0.10UF K
C67 CK73HB1E104K C CAPACITOR 0.10UF K
C68 CK73HB1E104K C CAPACITOR 0.10UF K
C69 CK73HB1E104K C CAPACITOR 0.10UF K
C70 CK73GBB1H102K C CAPACITOR 0.010UF K
C71 CK73GXR1H104K C CAPACITOR 0.1UF K
C73 CK73HB1E104K C CAPACITOR 0.10UF K
C74 CK73GB1E105K C CAPACITOR 1.0UF K
C75 CK73HB1E104K C CAPACITOR 0.10UF K
C76 CK73GBB1H102K C CAPACITOR 0.010UF K
C79 CK73GBB1H102K C CAPACITOR 0.010UF K
C83 CK73HB1E104K C CAPACITOR 0.10UF K
C84 CK73HB1E104K C CAPACITOR 0.10UF K
C87 CC73HCH1H101J C CAPACITOR 100PF J
C90 CK73GBB1H102K C CAPACITOR 0.010UF K
C91 CC73GCH1H470J C CAPACITOR 47PF J
C92 CC73GCH1H470J C CAPACITOR 47PF J
C101 CK73GBB1H102K C CAPACITOR 0.010UF K
R3 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R4 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R5 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R6 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R7 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R9 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R10 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R11 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R12 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R17 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R18 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R19 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R20 RK73HB1J101J MG RESISTOR 100 J 1/16W
R21 RK73HB1J331J MG RESISTOR 330 J 1/16W
R22 RK73HB1J331J MG RESISTOR 330 J 1/16W
R23 RK73HB1J331J MG RESISTOR 330 J 1/16W
R24 RK73HB1J331J MG RESISTOR 330 J 1/16W
R25 RK73HB1J101J MG RESISTOR 100 J 1/16W
R26 RK73HB1J222J MG RESISTOR 2.2K J 1/16W
R27 RK73HB1J331J MG RESISTOR 330 J 1/16W
R28 RK73HB1J331J MG RESISTOR 330 J 1/16W
R29 RK73HB1J331J MG RESISTOR 330 J 1/16W
R30 RK73HB1J331J MG RESISTOR 330 J 1/16W
R31 RK73HB1J101J MG RESISTOR 100 J 1/16W
R32 RK73HB1J331J MG RESISTOR 330 J 1/16W
R33 RK73HB1J331J MG RESISTOR 330 J 1/16W
R34 RK73HB1J331J MG RESISTOR 330 J 1/16W
R38 RK73HB1J101J MG RESISTOR 100 J 1/16W
R39 RK73HB1J101J MG RESISTOR 100 J 1/16W
R40 RK73HB1J101J MG RESISTOR 100 J 1/16W
R41 RK73HB1J101J MG RESISTOR 100 J 1/16W
R42 RK73HB1J102J MG RESISTOR 1.0K J 1/16W
R43 RK73HB1J102J MG RESISTOR 1.0K J 1/16W
R46 RK73HB1J102J MG RESISTOR 1.0K J 1/16W
R47 RK73HB1J103J MG RESISTOR 10K J 1/16W
R48 RK73GB2A151J MG RESISTOR 150 J 1/10W
R49 RK73HB1J562J MG RESISTOR 5.6K J 1/16W
R50 RK73HB1J222J MG RESISTOR 2.2K J 1/16W
R51 RK73HB1J102J MG RESISTOR 1.0K J 1/16W
R52 RK73HB1J102J MG RESISTOR 1.0K J 1/16W
R53 RK73HB1J103J MG RESISTOR 10K J 1/16W
R54 RK73HB1J473J MG RESISTOR 47K J 1/16W
R55 RK73HB1J473J MG RESISTOR 47K J 1/16W
R60 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R61 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R62 RK73HB1J101J MG RESISTOR 100 J 1/16W
R63 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R64 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R65 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
R66 RK73HB1J101J MG RESISTOR 100 J 1/16W
R69 RK73HH1J274D MG RESISTOR 270K D 1/16W
R71 RK73GB2A000J MG RESISTOR 0.0 J 1/10W
R77 RK73HB1J222J MG RESISTOR 2.2K J 1/16W
R78 RK73HB1J222J MG RESISTOR 2.2K J 1/16W
R79 RK73HB1J222J MG RESISTOR 2.2K J 1/16W
R81 RK73HB1J103J MG RESISTOR 10K J 1/16W
R82 RK73HB1J222J MG RESISTOR 2.2K J 1/16W
R83 RK73HB1J000J MG RESISTOR 0.0 J 1/16W
 Symbol No. Part No. Part Name Description Local

3-4(No.RA019<Rev.001>)
R87 RK73HB1J222J MG RESISTOR 2.2K J 1/16W
R88 RK73HB1J102J MG RESISTOR 1.0K J 1/16W
R98 RK73HB1J222J MG RESISTOR 2.2K J 1/16W
R99 RK73HB1J222J MG RESISTOR 2.2K J 1/16W
L1 LB73G0AM-004 CHIP FERRITE BEADS
L2 LB73G0AM-004 CHIP FERRITE BEADS
L3 LB73H0AV-003 CHIP FERRITE BEADS
L4 LB73H0AV-003 CHIP FERRITE BEADS
L5 LB73G0AM-004 CHIP FERRITE BEADS
L11 LB73H0AV-003 CHIP FERRITE BEADS
L14 LB73H0AV-003 CHIP FERRITE BEADS
L15 LB73G0AM-004 CHIP FERRITE BEADS
L16 LB73H0AV-003 CHIP FERRITE BEADS
L17 LB73H0AV-003 CHIP FERRITE BEADS
L18 LB73H0AV-003 CHIP FERRITE BEADS
CN2 E41-2673-05 PIN ASSY
CN4 E40-6965-05 FLAT CABLE CONNECTOR
CN5 E41-2671-05 PIN ASSY
CN6 E40-6913-05 FLAT CABLE CONNECTOR
J1 E58-0535-05 MODULAR JACK
S1 S70-0901-05 TACT SWITCH
S2 S70-0901-05 TACT SWITCH
S3 S70-0901-05 TACT SWITCH
S4 S70-0901-05 TACT SWITCH
S5 S70-0901-05 TACT SWITCH
S6 S70-0901-05 TACT SWITCH
S7 S70-0901-05 TACT SWITCH
S8 S70-0901-05 TACT SWITCH
S9 S70-0901-05 TACT SWITCH
S10 S70-0901-05 TACT SWITCH
S11 S70-0901-05 TACT SWITCH
S12 S70-0901-05 TACT SWITCH
 Symbol No. Part No. Part Name Description Local

MEMO

(No.RA019<Rev.001>)
VSE
Printed in Japan
JVC KENWOOD Corporation
Communications Equipment BU