KENWOOD KDC-W431 Service Manual

Cover page of KENWOOD KDC-W431 Service Manual

Service Manual for KENWOOD KDC-W431, downloadable as a PDF file.

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© 2004-12 PRINTED IN JAPAN
B53-0230-00 (N) 1813
CD RECEIVER
KDC-W4031/Y
KDC-W409/Y
KDC-W431GY
KDC-W4531/Y
KDC-WF431A
SERVICE MANUAL
* Depends on the model. Refer to the parts list.
PANEL ASSY
KDC-W4031/Y (A64-3455-02)
PANEL ASSY
KDC-W409/Y (A64-3456-02)
ANTENNA ADAPTOR
(T90-0523-05)
SPARE TDF PANEL
MAIN UNIT NAME
TDF PARTS No.
TDF NAME
KDC-W4031/Y
Y33-2140-60
TDF-W4531
KDC-W409/Y
Y33-2140-65
TDF-W409
KDC-W431GY
Y33-2140-61
TDF-W431GY
KDC-W4531/Y
Y33-2140-60
TDF-W4531
KDC-WF431A
Y33-2140-63
TDF-WF431
MENU
/PTY
VOL
AUD
FF
SET UP
SCAN
RDM
REP
F.SEL
MENU
VOL
AUD
FF
SET UP
SCAN
RDM
REP
F.SEL
/PTY
MENU
VOL
AUD
FF
SET UP
SCAN
RDM
REP
F.SEL
VOL
AUD
FF
SET UP
MENU
SCAN
RDM
REP
F.SEL
M.RDM
External Media Control
/PTY
/PIY
MENU
VOL
AUD
FF
SET UP
SCAN
RDM
REP
F.SEL
PANEL ASSY
KDC-W431GY (A64-3457-02)
PANEL ASSY
KDC-W4531/Y (A64-3454-02)
PANEL ASSY
KDC-WF431A (A64-3466-02)
MOUNTING HARDWARE ASSY
(J21-9716-03)
PLASTIC CABINET ASSY
(A02-2736-03)
DC CORD
(E30-6413-05)
LEVER
(D10-4589-04) x2
* ESCUTCHEON
(B07-xxxx-xx)
This product uses Lead Free solder.
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© 2004-12 PRINTED IN JAPAN
B53-0230-00 (N) 1813
CD RECEIVER
KDC-W4031/Y
KDC-W409/Y
KDC-W431GY
KDC-W4531/Y
KDC-WF431A
SERVICE MANUAL
* Depends on the model. Refer to the parts list.
PANEL ASSY
KDC-W4031/Y (A64-3455-02)
PANEL ASSY
KDC-W409/Y (A64-3456-02)
ANTENNA ADAPTOR
(T90-0523-05)
SPARE TDF PANEL
MAIN UNIT NAME
TDF PARTS No.
TDF NAME
KDC-W4031/Y
Y33-2140-60
TDF-W4531
KDC-W409/Y
Y33-2140-65
TDF-W409
KDC-W431GY
Y33-2140-61
TDF-W431GY
KDC-W4531/Y
Y33-2140-60
TDF-W4531
KDC-WF431A
Y33-2140-63
TDF-WF431
MENU
/PTY
VOL
AUD
FF
SET UP
SCAN
RDM
REP
F.SEL
MENU
VOL
AUD
FF
SET UP
SCAN
RDM
REP
F.SEL
/PTY
MENU
VOL
AUD
FF
SET UP
SCAN
RDM
REP
F.SEL
VOL
AUD
FF
SET UP
MENU
SCAN
RDM
REP
F.SEL
M.RDM
External Media Control
/PTY
/PIY
MENU
VOL
AUD
FF
SET UP
SCAN
RDM
REP
F.SEL
PANEL ASSY
KDC-W431GY (A64-3457-02)
PANEL ASSY
KDC-W4531/Y (A64-3454-02)
PANEL ASSY
KDC-WF431A (A64-3466-02)
MOUNTING HARDWARE ASSY
(J21-9716-03)
PLASTIC CABINET ASSY
(A02-2736-03)
DC CORD
(E30-6413-05)
LEVER
(D10-4589-04) x2
* ESCUTCHEON
(B07-xxxx-xx)
This product uses Lead Free solder.
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2
KDC-W4031/W4031Y/W409/W409Y
KDC-W431GY/W4531/W4531Y/WF431A
BLOCK DIAGRAM
MECHA
CD or MD
CHANGER
J2
E-VOL
IC10
&
AM AGC
Q501
FM AGC
L506
J4
TUNER
IC11
E2PROM
SYSTEM u-COM
IC1
IC7
RDS
DECODER
RST IC
IC8
PRE MUTE
Q351,352
IC4
POWER IC
MUTE LOGIC
IC6
SURGE DET
BU DET
ACC DET
Q51
Q52
Q53
J1
PAN5V
Q151
Q72,73
SERVO
VFD REG
IC15
POWER SUPPLY IC
IC3
ED1
VFD
with
VFD DRIVER
IC1
REMOTE
IC3
VOL
S11
KEY MATRIX
DSI
Q155
.......
.......
J6
SERVO
A8V
BU5V
AUDIO OUT
AM+B
ANT
MPX OUT
MPX IN
800mV
1200mV
AUDIO OUT
BU5V
A8V
BACK-UP
SP OUT
BACK-UP
ACC
TEL MUTE
P-ANT
P-CON
PAN5
SERVO
P-ANT
SW5V
AM+B
A8V
BU5V
P-CON
SW5V
AM+B
AUDIO+B
VCC
ILLUMI
BU5V
ILLUMI
PAN5V
BU5V
PRE OUT
KEY
:
CHANGER
CD/MD RECEIVER
FM (E Type)
FM (J/K Type)
AM (J/K Type)
AM (E Type)
:
:
:
:
: 1800mV
1372mV
600mV
855mV
3600mV
3600mV
ELECTRIC UNIT (X34-)
SWITCH UNIT (X16-)
S7V
A8V
BU5V
D5V
A3.3V
SW3.3V
BU3.3V
B
U2.5V
CD PLAYER UNIT (X32-5500-00)
IC1
MECHANISM
CONTROL
Q8
APC
Q9,10
SW
IC4
4ch BTL
DRIVER
M
M
DM1
DM2
SPINDLE
MOTOR
LOADING
MOTOR
& SLED
S1
S2
IC9
DAC 3.3V
AVR
Q3,5,6
S3
LEVEL SHIFT
Q7
Q1,4
LEVEL
SHIFT
MICROPROCESSOR
AVR
BU 3.3V
IC6
DAC 3.3V
AVR
IC7
SW 3.3V
AVR
IC5
LEVEL
SHIFT
IC3
MP3/WMA
DECODER
IC2
PROCESSOR
RF AMP/SERVO
CD SIGNAL
BUFFER
IC8
FO COIL
TR COIL
(OPTICAL PICKUP)
A
C
F
B
E
DPU1
LD
PD
CN2
CN1
15
14
13
12
DGND
DATA
CLK
MUTER
MUTEL
MSTOP
MRST
10
LOS
20
19
18
17
16
1
A8V
L
AGND
DOUT
R
MOTOR
LO/EJ
5
4
3
2
9
8
7
6
SGND
S7V
12EJE
LOE/LIM
X2
16.00MHz
16.898MHz
X1
OPEN
D5
DGND
D5
24
23
22
21
BU5
3
3
8
1
2
4
4
4
4
VREF
SLD
TRK
FCS
SPD
516
PON
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3
KDC-W4031/W4031Y/W409/W409Y
KDC-W431GY/W4531/W4531Y/WF431A
COMPONENTS DESCRIPTION
ELECTRIC UNIT (X34-3402-7x)
Ref. No.
Application / Function
Operation / Condition
IC1
SYSTEM
µ-COM
System control.
IC3
POWER SUPPLY
DC5Vx2, 7.9Vx1, 8.1Vx1, 10.3V, P.CON, P-ANT output.
IC4
POWER IC
Audio signal amplifier.
IC6
MUTE LOGIC
Mute control.
IC7
RDS DECODER
RDS decode.
IC8
RESET
"L" when detection voltage goes below 3.6V.
IC10
E-VOL & TUNER
E-VOL, Tuner, Stereo decode.
IC11
E2PROM
Saves and writes tuner adjustment data.
IC15
VFD REGULATOR
11.3V output voltage for LED and VFD.
Q51
SERGE DET
"ON" when the base goes "H".
Q52
BU DET
"ON" when the base goes "H".
Q53
ACC DET
"ON" when the base goes "H".
Q71
SERVO+B CONTROL SW
"ON" when the base goes "H".
Q72,73
SERVO+B AVR
Output voltage level : 7.5V.
Q74
IC3 CONTROL SW
"ON" when the base goes "H" (Output voltage : 10.3V).
Q151
PANEL 5V SW
"ON" when the base goes "L".
Q155
DSI ILLUMI SW
"ON" when the base goes "L".
Q252
IC4 STBY SW
"ON" when the base goes "L".
Q330
Q351, 352 MUTE DRIVER
"ON" when the base goes "L".
Q351
Lch PRE MUTE SW
Pre-output is muted when the base goes "H".
Q352
Rch PRE MUTE SW
Pre-output is muted when the base goes "H".
Q501
AM RF AMP
Adjusts for AM-RF gain.
CD PLAYER UNIT (X32-5500-00)
Ref. No.
Application / Function
Operation / Condition
Focusing, tracking, sled and spindle servo processing.
IC1
MECHANISM CONTROL
Automatic adjustment (Focusing, tracking, gain, offset and balance) operations.
MICROPROCESSOR
Digital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio data
interpolation) operations, and microcomputer function.
Generation of RF signal based on the signals from the APC circuit and pickup, and
IC2
RF AMP/SERVO CD
generation of servo error (Focusing error and tracking error) signals.
SIGNAL PROCESSOR
Detection of dropout, anti-shock, track crossing and off-track conditions, included
gain control function during CD-RW.
IC3
MP3/WMA DECODER
IC4
4ch BTL DRIVER
Focusing coil, tracking coil, spindle motor and sled motor driver, disc loading and
eject operation.
IC5
SW 3.3V AVR
IC6
BU 3.3V AVR
3.3V power supply for back-up.
IC7
BU 2.5V AVR
2.5V power supply for back-up.
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4
KDC-W4031/W4031Y/W409/W409Y
KDC-W431GY/W4531/W4531Y/WF431A
Ref. No.
Application / Function
Operation / Condition
IC8
SELECTOR (SERIAL DATA)
Serial audio data switch.
IC9
DAC 3.3V AVR
3.3V power supply for IC2.
Q1
LEVEL SHIFT
3.3V to 5.0V.
Q3~7
LEVEL SHIFT
3.3V to 5.0V.
Q8
AUTOMATIC POWER CONTROL
LD driver.
Q9,10
SWITCH
Switch for anticipation sub-beam delay.
SWITCH UNIT (X16-2932-7x)
Ref. No.
Application / Function
Operation / Condition
IC1
VFD DRIVER
IC3
REMOTE SENSOR
Q1
GREEN LED SW
"ON" when the base goes "H".
Q2
RED LED SW
"ON" when the base goes "H".
Q21
PAN SW5V
"ON" when the base goes "H".
COMPONENTS DESCRIPTION
MICROCOMPUTER'S TERMINAL DESCRIPTION
SYSTEM
µ-COM : IC1 on X34- (ELECTRIC UNIT)
Pin No.
Active
Pin Name
I/O
Application
Processing Operation
(H/L)
1
DC ERR
I
DC offset detection input
2
LINE MUTE
I
Phone detection
NAVI MUTE : Over 2.5V, TEL MUTE : Below 1V
3ROTARY CW
I
Rotary encoder input
4AVSS
-
5
TUN TYPE1
I
E-VOL setting switch
Refer to "TUN TYPE" on the TRUTH TABLE
6
TUN TYPE2
I
E-VOL setting switch
Refer to "TUN TYPE" on the TRUTH TABLE
7AVREF1
-
8
VFD DATAF
I
Data input from VFD driver
9
VFD DATAS
O
Data output to VFD driver
10
VFD CLK
O
Clock output to VFD driver
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5
KDC-W4031/W4031Y/W409/W409Y
KDC-W431GY/W4531/W4531Y/WF431A
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No.
Active
Pin Name
I/O
Application
Processing Operation
(H/L)
11
L
VFD RST
O
Reset output to VFD driver
Display OFF, Key reset, TDF panel OFF : L
Display ON, Key scan : H
12
VFD CE
O
Chip enable output to VFD driver
13
ROTARY CCW
I
Rotary encoder input
14
L
TDF DET
I
TDF panel detection
TDF panel OFF : H, TDF panel ON : L
15
PWIC BEEP
O
Beep output
16
LX DATA S
I
Data from slave unit
17
LX DATA M
O
Data to slave unit
18
LX CLK
I/O
LX-BUS clock
19
RDS AFSL
O
Tuner RDS mute output
Refer to "RDS AFSL" on the TRUTH TABLE
20
L
TUN ADJ
I
For adjusting IC10
Adjustment=H, PS1-1,2=L, PS1-3=Hi-Z,
PS2-1,2=Hi-Z, TUN DATA, CLK=Hi-Z
21
TUN SD
I
Tuner search stop output
H : Station exists, L : Station does not exist
22
H
LX RST
O
Hard reset to slave unit
H : Reset, L : Normal condition
23
H
LX CON
O
Start-up request to slave unit
H : Slave unit ON, L : Slave unit OFF
24
LX REQ M
O
Communication request to slave unit
25
AUD SDA
I/O
Volume + tuner I2C data input and output
26
AUD SCL
I/O
Volume + tuner I2C clock input and output
27
H
PWIC STBY
O
Power IC standby output
Power IC ON : H, Power IC OFF : L
28
H
VOL MUTE
O
E-VOL mute output
L : Mute OFF, Hi-Z : Mute ON
29
L
PWIC MUTE
O
Power IC mute output
Power OFF : L, Standby : L, Tel mute : L
30
TUN FANC OUT
O
Tuner block (inside the
µ-com) check
OK : L, NG : H
31
RESET2
O
Mute for reset
Output L
32
RDS DATA
I
RDS decoder data input
33
VSS1
-
34
RDS QUAL
I
RDS decoder QUAL input
35
L
ACC DET
I
ACC detection
ACC exists : L, ACC does not exist : H
36
L
BU DET
I
Momentary power-down detection
BU exists : L
BU does not exist (Momentary power-down) : H
37
NC
-
38
PS2-2
O
Power supply control output
Refer to "POWER IC CONTROL" on the TRUTH TABLE
39
PS2-1
O
Power supply control output
Refer to "POWER IC CONTROL" on the TRUTH TABLE
40
PS1-1
O
Power supply control output
Refer to "POWER IC CONTROL" on the TRUTH TABLE
41
PS1-2
O
Power supply control output
Refer to "POWER IC CONTROL" on the TRUTH TABLE
42
PS1-3
O
Power supply control output
Refer to "POWER IC CONTROL" on the TRUTH TABLE
43,44
NC
-
45
CD MUTE
I
CD mute request
L : Mute request
46
L
CD MSTOP
O
CD mecha u-com stop
H : mecha
µ-com operates, L : mecha µ-com is stopped
47
CD LOE LIM SW
I
CD detection (chucking switch)
H : Loading is finished, L : Disc does not exist

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