Kenwood KCABT-100 Service manual

Bluetooth HANDS FREE BOX
KCA-BT100
SERVICE MANUAL
© 2006-11 PRINTED IN JAPAN B53-0472-00 (N) 955
Cord with DIN connector (E30-6645-05)
5L I/F
About removing the 2 hexagonal head screws : “TORX T8 Screwdriver” is necessary.
TO
IC
M
IT
UN
HEAD
TO
Bluetooth Hands Free Box
Magic tape (H30-0600-04)
Screw set (N99-1789-05)
Microphone (3m) (W01-1676-05)
This product uses Lead Free solder.
KCA-BT100

BLOCK DIAGRAM

ROM CORRECTION (NOT USED)
E2PROM
BU5V
L1
CHIP
ANTENNA
2.45GHz
2
CLK1 DATAH1 DATAC1 REQH1 REQC1
BOOT E
RESETP
RF TEST
IC6
A1 IC7
SS2
BOOT E
RESETP
SW3.3V
IC2
CLK1 DATAH1
5
DATAC1 REQH1 REQC1
MAIN u-COM
TXD
RTS
3.3V
5V
5V
3.3V
22
TXD
RTS
BLUETOOTH RF MODULE
SYSTEM u-COM (LX-BUS u-COM)
BUDET
CHCON0
BU5V
RXD
RXD
22
CTS
IC5
CTS
BCLK
RELAY2
MUTE1
DX DR FS
CHCON2
RESET
D0
D15
A0
A18 A18
PON
PON2
CHCON1
RSTN
MUTEN
BEEP
RESET
BU5V
DX
4
DR FS BCLK
CODEC
SW3.3V
CLK2 DATAH2 DATAC2
CHCON1
REQH2 REQC2
CLK0 DATAH0 DATAC0
REQH0 REQC0
BU5V
16
19
PCM
5
5
MUTEN
IC8IC3
RSTN
IC4
RESET IC
D15
J1
D0
FLASH
A0
ROM
SW5V
CONT1 CONT4 CONT2 CONT3
SELECTOR
BU5V
A8V
SW5V
SW3.3V
IC13 BPF
Q13IC11
Q3
CHCON
Q5
BU DET
Q6,16
BU5V
Q9,10
A8V
IC10
5V SW REG
IC9
3.3V REG
CH (LX-BUS I/F)
BU Lch2 AGND2 Rch2 MUTE2
CLK2 DATAH2 DATAC2 REQH2 REQC2
CHCON2 RESET2
J2
MIC INPUT
CN1
H/U (LX-BUS I/F)
BU GND Lch0 AGND0 Rch0 MUTE0 CLK0
DATAH0 DATAC0 REQH0 REQC0
CHCON0 RESET0

COMPONENTS DESCRIPTION

PROCESSOR UNIT (X32-5852-70)

Ref. No. Application / Function Operation / Condition / Compatibility
IC2 System µ-COM (LX-BUS µ-COM) IC3 Main µ-COM IC4 Reset IC Detection voltage is 3.5V IC5 5V → 3.3V Conversion Level conversion from 5V to 3.3V IC6 3.5V 5V Conversion Level conversion from 3.3V to 5V IC7 PCM Codec IC8 Flash Memory IC9 3.3V REG IC10 5V REG IC11 Analog SW Switches 5L-signal output and hands-free signal output. IC12 MIC Input AMP Amplifies MIC input. IC13 BPF Amplifies audio reference circuit signal and hands-free signal. Q1 SW5V SW Vb=L: SW5V ON, Vb=H: SW5V OFF Q2 Reset CONT Vb=H: It resets IC2 and IC3
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KCA-BT100
COMPONENTS DESCRIPTION
Ref. No. Application / Function Operation / Condition / Compatibility
Q3 Changer CONT Vc=L: Head unit is used, Vc=H: Head unit is not used Q5 BU DET BU ON: Vc=L, BU OFF: Vc=H Q6 BU5V AVR Q16’s Vb=H: 5V ON
Q7,8 Analog SW CONT
Q9,10 A8V AVR Q9’s Vb=H: 8V ON
Q11 Analog SW CONT
Q12 SW14V IC3’s pin21=H: 14V ON
Q13 Audio GND SW
Q15 LX-BUS Mute Buffer IC3’s pin25=L: Vc=H, IC3’s pin25=H: Vc=L Q16 BU5V AVR Q16’s Vb=H: 5V ON
Controls switching of IC11 and Q13 IC2’s pin22=H: Changer audio signal, IC2’s pin22=L: Hands-free audio signal
Controls switching of IC11 and Q13 IC2’s pin22=H: Changer audio signal, IC2’s pin22=L: Hands-free audio signal
Changer or Hands-free GND select SW IC2’s pin22=H: Changer GND, IC2’s pin22=L: Hands-free GND

MICROCOMPUTER’S TERMINAL DESCRIPTION

SYSTEM µ-COM: IC2 on X32- (PROCESSOR UNIT)
Pin No. Pin Name I/O Application Processing / Operation / Description
1~3 NC - Not used 4AVSS - A/D reference GND 5 P130 - GND 6 REQH1 O Communication request to CH1 L: Communication request is found 7AVREF1 - D/A reference voltage input 8DATAC1IData input from CH1 9DATAH1 O Data output to CH1 10 HCLK1 I/O Clock output to CH1 11 DATAH0 I Data input from head unit 12 DATAC0 O Data output to head unit 13 HCLK0 I/O Clock input from head unit 14 REQC0 O Communication request to head unit L: Communication request is found 15 REQH2 O Communication request to CH2 L: Communication request is found 16 DATAC2 I Data input from CH2 17 DATAH2 O Data output to CH2 18 HCLK2 I/O CH2 clock output 19 CHCONO1 O CH1 control output H: CH1 control request 20 CHCONO2 O CH2 control output H: CH2 control request 21 NC - Not used 22 RELA Y2 O Relay control H: CH2, L: CH1 23~32 NC - Not used 33 VSS1 - GND 34~59 NC - Not used
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KCA-BT100
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Application Processing / Operation / Description
60 RESET I Reset input L: Reset 61 REQH0 I Communication request input from head unit L: Communication request is found 62 BUDET I Detection input of momentary power down H: Detection of momentary power down 63 PO2 - GND 64 REQC2 I Communication request input from CH2 L: Communication request is found 65 REQC1 I Communication request input from CH1 L: Communication request is found 66 CHCON1 I Changer control input from head unit L: Changer control request 67 VSS0 - GND 68 VDD1 - Power supply voltage 69 X2 - Resonator connection 70 X1 I Resonator connection 71 IC - Internal connection 72 NC - Not used 73 CHCON2 I CH2 control input from head unit L: CH2 control request 74 AVDD0 - A/D anolog power supply voltage 75 AVREF0 - A/D reference voltage input 76~80 NC - Not used
MAIN µ-COM: IC3 on X32- (PROCESSOR UNIT)
Pin No. Pin Name I/O Application Processing / Operation / Description
1,2 NC - Not used L fixed 3 LX DATA S O Data to master unit Pull-up (B.U.) 4 LX DATA M I Data from master unit 5 LX CLK I LX-BUS clock Pull-up (B.U.) 6 BYTE - External data bus switching input Connects to GND 7 CNVSS - Processor mode switching input Pull-down (GND) 8,9 NC - Not used L fixed 10 RESET I Forced reset from master unit L: Reset 11 XOUT O Main clock output 12 VSS - Power supply input Connects to GND 13 XIN I Main clock input 14 VCC1 - Power supply input Connects to B.U.5V 15 NMI I NMI interruption input Pull-up (B.U.) 16 PON2 O Circumference power supply control (5V) L: ON 17 LX CON I Start-up request from master unit H: Slave unit ON, L: Slave unit OFF 18 LX REQ M I Communication request from master unit 19 MUTEN I/O Codec mute L: Mute 20 RSTN O Codec reset L: Reset 21 PON O Circumference power supply control (A8V) H: ON 22 BEEP O Beep output 2kHz 23 BOOT E I Test mode input L: Test mode 24 RESET P I/O Module reset output L: Reset
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KCA-BT100
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Application Processing / Operation / Description
25 LX MUTE O Mute request to master unit L: Mute ON, H: Mute OFF 26 LX REQ S O Communication request to master unit Pull-down (GND) 27 ROM SCL I/O E2PROM clock for ROM correction Pull-up (B.U.) 28 ROM SDA O E2PROM data for ROM correction Pull-up (B.U.) 29 MCU RXD O Not used (Terminal for flash ROM writing) L fixed 30 MCU TXD O Not used (Terminal for flash ROM writing) L fixed 31 MCU CLK O Not used (Terminal for flash ROM writing) L fixed 32 SCIF0 RTS I Bluetooth module transmission control input 33 SCIF0 RXD O Bluetooth module data output 34 SCIF0 TXD I Bluetooth module data input 35 NC - Not used L fixed 36 SCIF0 CTS O Bluetooth module transmission control output 37 NC I Not used Pull-up (B.U.) 38 NC - Not used 39 NC I Not used Pull-up (B.U.) 40 NC - Not used 41 NC I Not used Pull-up (B.U.) 42 RD O External memory reading permission L: Reading 43 NC - Not used 44 WR O External memory writing permission L: Writing 45 NC O Not used Pull-up (B.U.)
46 DISP SEL I Switch for 2006’s models with 14-SEG display
47 A18 O External bus address Address output 48 CS O Flash ROM chip enable L: Selected 49 A17 O External bus address Address output 50 NC - Not used Open 51~59 A16~A8 O External bus address Address output 60 VCC2 - Power supply input Connects to B.U.5V 61 A7 O External bus address Address output 62 VSS - Power supply input Connects to GND 63~69 A6~A0 O External bus address Address output 70 NC - Not used Open 71~86 D15~D0 I/O External bus data Data input/output 87 FLASH RST O Flash ROM reset L: Reset 88 FLASH RY I Flash ROM ready input L: Busy (During writing) 89~93 NC - Not used L fixed 94 AVSS - Analog power supply input Connects to GND 95 NC - Not used L fixed 96 VREF - Reference voltage input Connects to GND 97 AVCC - Analog power supply input Connects to B.U.5V 98,99 NC - Not used L fixed 100 ROM WR I ROM correction writing mode input L: ROM correction writing mode
L: 2006’s models with 14-SEG display H: Others condition (Default)
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