KENWOOD KDC-V6524 Service Manual

Cover page of KENWOOD KDC-V6524 Service Manual

Service Manual for KENWOOD KDC-V6524, downloadable as a PDF file.

We also have owner's manual to this model.

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  • The manual has 30 pages
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KDC-V6524
OFF
NF
-
+
DAB
F.SEL
M.RDM
REP
SCAN
RDM
AUD
PTY
MENU
NAME.S
DISP
TI
GSM
Front glass
(B10-4316-01)
Panel assy
(A64-2840-02)
Escutcheon
(B07-3022-02)
Plastic cabinet assy
(A02-1486-13)
Mounting hardware assy
(J21-9716-03)
DC cord
(E30-4958-05)
Antenna adaptor
(T90-0523-05)
Screw set
(N99-1730-15)
Lever
(D10-4589-04)
·CD MECHANISM OPERATION DESCRIPTION is not in this sevice manual.
Please refer to service manual for X92-4450-0X (B51-7889-00).
CD mechanism extension cord (24PIN) : W05-0934-00
© 2003-1 PRINTED IN JAPAN
B53-0027-00 (N) 1874
CD RECEIVER
KDC-V6524
SERVICE MANUAL
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KDC-V6524
OFF
NF
-
+
DAB
F.SEL
M.RDM
REP
SCAN
RDM
AUD
PTY
MENU
NAME.S
DISP
TI
GSM
Front glass
(B10-4316-01)
Panel assy
(A64-2840-02)
Escutcheon
(B07-3022-02)
Plastic cabinet assy
(A02-1486-13)
Mounting hardware assy
(J21-9716-03)
DC cord
(E30-4958-05)
Antenna adaptor
(T90-0523-05)
Screw set
(N99-1730-15)
Lever
(D10-4589-04)
·CD MECHANISM OPERATION DESCRIPTION is not in this sevice manual.
Please refer to service manual for X92-4450-0X (B51-7889-00).
CD mechanism extension cord (24PIN) : W05-0934-00
© 2003-1 PRINTED IN JAPAN
B53-0027-00 (N) 1874
CD RECEIVER
KDC-V6524
SERVICE MANUAL
background image
KDC-V6524
2
BLOCK
DIAGRAM
BUFFER
Q101
RDS
DECODER
IC7
Q201
BUFFER
EEPROM
IC10
IC1
(V-ILL ONLY)
DA CONVERTER
IC3
IC2
REMOCON
RESET SW
ENCODER
ROTARY
S24
WITH
LCD DRIVER
KEY MATRIX
IC1
LCD
PANEL DET
S1
EJECT SW
S1
EJECT ILLUMI
DSI
u-COM
IC2
MPX
E-VOL
&
EXT AMP
DIMMER
ACC DET
TEL MUTE
B.U DET
PRE MUTE
PRE MUTE
PRE MUTE
DRIVER
MUTE
IC6
POWER
IC
IC4
THERMAL
PROTECT
PRE OUT
(REAR/NF)
EXT.AMP.CON
DIMMER
ACC
TEL MUTE
BACK UP
AUX IN
(REAR) 3PRE
PRE OUT
(FRONT)
PRE OUT
SP OUT
SURGE DET
SW REG
CD MECHA+B
SERVO
SERVO+B
SW 14V
Q21
IC9
OPEL DISP I/F
WIRED REMO/
SUPPLY
IC
IC3
POWER
ANT DET
P CON
RESET
IC8
SW 5V
Q4
PANEL 5V
Q152
SW5V
S-METER
AUDIO OUT
IFC OUT
PLL-DATA
PLL-CLK
SW5V
AM+B
A8V
SW3
SW2
SW1
MS CLK
MS DATA
M MUTE L
SW4
M MUTE R
LO/EJ
M STOP
MOSW
M RST
SERVO+B
A8V
BU5V
CD MECHA+B
DATA C
CH MUTE
CH RST
REQ H
REQ C
CH CLK
CH-CON
DATA H
BUCK UP
NOISE
QU
A
L
S-METER
R
D
ATA
R
CLK
FM
AM
MP IN
LEVEL
CD
QUAL
AFS
CH
SW5V
SW5V
BU5V
P
ANEL
DET
EJECT
DSI
L
CLK
L
D
A
T
A
S
L
CE
L
D
A
T
A
L
V
O
L
A
V
O
L
B
REMO
V
D
ATA
V
CLK
O-CE
O-D
A
T
A
O-CLK
PRE MUTE
MUTE
P-MUTE
EXT.AMP.CON
DIMMER
PHONE
ACC DET
B.U DET
BEEP
PS1-0
PS1-1
PS1-2
PS2-0
PS2-2
RST
FREE
REAR
FRONT
BU5V
BUCK UP
A8V
AU
X
SW5V
BACK UP
AM+B
FM+B
ILLUMI
A8V
BU5V
BU5V
BU5V
TUNER
CD
EX.CH
SWITCH UNIT (X16- )
DAUGHTER UNIT
(X89- )
KDC-V6524
background image
KDC-V6524
3
q CD PLAYER UNIT (X32-5200-00)
COMPONENTS DESCRIPTION
Ref.No.
Component Name
Application/Functions
Operation/Condition/Compatibility
IC1
AN22002AA
RF amplifier adapted for CD-RW
Generation of RF signal based on the signals from the APC circuit and
pickup, and generation of servo error (focusing error and tracking error)
signals. Detection of dropout, anti-shock, track crossing and off-track
conditions, included gain control function during CD-RW.
IC2
MN6627774KH2
CD signal processor built-in MI-COM Focusing, tracking, sled and spindle servo processing. Automatic adjust-
ment (focusing, tracking, gain, offset and balance) operations. Digital
signal processing (DSP, PLL, sub-codes, CIRC error correction, audio
data Interpol ration) operations, and Microcomputer function.
IC4
BA5824FP
4CH BTL driver
Focusing coil, tracking coil, spindle motor and sled motor driver, disc
loading and eject operation.
IC6
NJM4580M1
Low pass filter
2nd low pass filter for audio signals
Q1
MCH6101
APC
LD power control
Q2
DTC124EUA
D.5V SW
When P ON signal gose"L", Q2 is ON
Q3
DTA143XUA
Q4 SW
When P ON signal gose"L" (SW+5V AVR is ON), Q3 is ON
Q4
2SA1362(Y)
A.8V SW
When P ON signal gose"L" (Q3 is ON), Q4 is ON
D1
DAN202U
Protection diode
Laser diode protection
D2
MA8051-L
Zener diode
DAC AVR/LPF reference voltage (A.5V)
D3
DA204U
Current driver
Current driver
q ELECTRIC UNIT (X25-9712-72)
Ref.No.
Component Name
Application/Functions
Operation/Condition/Compatibility
IC1
UPD703030GC013
System microcomputer
Control for TUNER unit, CD mechanism, volume & tone, LCD driver and
external CD changer unit.
IC2
TDA7411
Electronic volume & N.C.MPX
Control for source selector, volume & tone, and FM multiplex detector.
IC3
BA4911-V4
Power supply IC
Power supply for the units. (Bu5V, Audio8V, FM+B, AM+B, P-con and ANT-con)
IC4
TA8273H
Audio power amp IC
Amplifier for audio signal to derive for 4channel speakers.
(50W maximum for each channel)
IC6
HD74HC27FP
Muting control IC
Control for timing for mute.
IC7
SAA6581T
RDS decoder
Decode for RDS signal.
IC8
PST3436UL
Reset IC
When detection voltage goes below 3.5V or less Reset IC output change
to "L" signal.
Q1
2SC4081
Serge detection
When backup voltage become more than 24V output is "L" (momentary
power down) / When backup voltage become less than 24V output is "H"
Q2
2SC4081
Backup detection
When BU voltage supplied output is "L" / When BU voltage not supplied
or momentary power down is detected output is "H".
Q3
2SC4081
ACC detection
When ACC voltage supplied output is "L".
Q4
2SA1036K
SW 5V
When base voltage is "L" Q4 is ON.
Q21
2SD2375
AVR
Servo regulator.
Q22
UMC2N
SW
Servo SW.
Q31
DTC144EUA
Dimmer control
When base voltage is "H" dimmer is ON.
SW1
OUT
1.5-3.0V
Audio ON
3.5-5.0V
Audio, P-con ON
7.0V-
Audio, P-con, P-ant ON
SW2
2.0-3.0V
Illumination, FM ON
4.0V-
Illumination, AM ON
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KDC-V6524
4
COMPONENTS DESCRIPTION
Ref.No.
Component Name
Application/Functions
Operation/Condition/Compatibility
Q101
DTC143TUA
Buffer amp
COMPOSITE SIGNAL BUFFER.
Q151
DTA114YUA
DSI driver
When base voltage level is "L" DSI LED is light up / When base voltage
level is "H" DSI LED turns off / When panel assy is pull off, cut off the
supply to panel 5V AVR.
Q152
2SA1576A
Panel 5V SW
When panel assy attached to the unit, Q152 base goes "L" and supply to
panel 5V AVR to panel assy.
Q153
DTC144EUA
Illumination control
When Q153 base voltage to "H", illumination is light up.
Q154
2SA1577
Illumination control
When Q153 base voltage to "H", illumination is light up.
Q201
DTC143TUA
Buffer amp
Noise buffer amp.
Q350
DTA124EUA
Pre & NF mute SW
When base voltage to "L", drive to pre & NF mute SW(Q351,355,357).
Q351
DTC143TUA
Pre mute SW
When base voltage to "H", muting to the pre Lch or NF Lch line.
Q352
DTC143TUA
Pre mute SW
When base voltage to "H", muting to the pre Rch or NF Rch line.
Q354
DTA124EUA
Pre & NF mute SW
When base voltage to "L", drive to pre & NF mute SW(Q32,356,358).
Q355
DTC143TUA
Pre mute SW
When base voltage to "H", muting to the front Lch line.
Q356
DTC143TUA
Pre mute SW
When base voltage to "H", muting to the front Rch line.
q SWITCH UNIT (X16-2242-70)
Ref.No.
Component Name
Application/Functions
Operation/Condition/Compatibility
IC1
LC75808W
LCD driver
Drive for LCD unit
IC2
PNA4S22M
Remote control IC
Receiving for the remote control unit
IC3
M62333FP
D/A converter IC
Variable illumination data convert to DC voltage
Q1
2SC4081
VLCD AVR
When base voltage level goes 7.9V Q1 is ON
Q2
DTA114EUA
Remo.on SW
When base voltage level goes "L" the power supply IC2 is turned "ON"
Q3
2SC4081
Key illumination SW
Lights up for green key illumination when base voltage level goes "H"
Q4
2SC4081
Key illumination SW
Lights up for red key illumination when base voltage level goes "H"
Q50,Q53,Q56 2SC4081
Variable key illumination SW
Lights up for blue variable key illumination when base voltage level goes
"0V to 5V"
Q51,Q54,Q57 2SC4081
Variable key illumination SW
Lights up for green variable key illumination when base voltage level
goes "0V to 5V"
Q52,Q55,Q58 2SC4081
Variable key illumination SW
Lights up for red variable key illumination when base voltage level goes
"0V to 5V"
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KDC-V6524
5
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No.
Name
I/O
Description/Processing Operation
1
PLL CLK
O
CLK output terminal to Front End
2
N.C
-
Open
3
PANEL DET
I
Panel assy detect terminal ( Panel assy come off : L)
4
IC2 SDA
I/O
Control Data input / output terminal for electric volume, CD mechanism
5
IC2 SCL
O
Clock DATA output terminal for electric volume, CD mechanism
6
VDD
-
Power supply input terminal (BU 5V)
7
VSS
-
GND
8
FLIP-DET
I
Panel assy open detect terminal (panel close : L )
9
BEEP
O
Beep audio signal output terminal
10
REMO
I
Remote control signal input terminal
11
R QUAL
I
RDS decoder QUAL signal input terminal
12
R DATA
I
RDS decoder Data signal input terminal
13
L CE
O
CE output for LCD driver IC
14
VILL DATA
O
Variable illumination DATA out put terminal for D/A converter
15
VILL CLK
O
Valuable illumination CLK out put terminal for D/A converter
16
DSI
O
Disc guide illumination control terminal
17
DIM CON
O
Dimmer control terminal
18
TEST
-
Test terminal
19
ILL CON
O
Illumination control terminal
20
VOL A
I
Volume key input terminal
21
VOL B
I
Volume key input terminal
22
MOSW
O
CD mechanism motor IC control output terminal (Loading,eject ,brake :L )
23
LO/EJ
O
CD mechanism loading / eject control terminal
24
M STOP
O
Request signal (Mechanism is STOP) output to CD mechanism (active L)
25
M RST
O
Reset signal output to CD mechanism (active L)
26
MUTE
O
Muting signal output terminal
27
LOE/LIM SW
I
Down SW detection from CD mechanism
28
M-MUTE L
I
Request for muting signal from CD mechanism (Mute request : L )
29
M-MUTE R
I
Request for muting signal from CD mechanism (Mute request : L )
30
PANEL 5V
O
Control for Panel5V AVR
31
RESET
I
Reset terminal (Active : L )
32
XT1
I
Sub clock input terminal (32.768KHz)
33
XT2
I
Sub clock input terminal (32.768KHz)
34
REGC
-
Regulator output terminal
35
X2
I
Main clock input terminal (20MHz)
36
X1
I
Main clock input terminal (20MHz)
37
VSS
-
GND
38
VDD
-
Power supply input terminal (BU 5V)
39
NC
-
Open
40
IC2 TYPE1
I
Electric volume condition setting terminal
41
IC2 TYPE0
I
Electric volume condition setting terminal
42
TYPE2
I
Destination setting terminal
43
TYPE1
I
Destination setting terminal
44
TYPE0
I
Destination setting terminal
45
CD MECHA+B
O
AVR control for CD mechanism ( For MP3 AVR ON :L )
46
SW 5V
O
Control terminal for SW5V AVR (ON : L , OFF : Hi-Z)
47
PS2-0
O
Power supply IC control terminal
48
PS2-1
O
Power supply IC control terminal
49
PS1-0
O
Power supply IC control terminal
50
PS1-1
O
Power supply IC control terminal
q IC1: ELECTRIC UNIT (X25-9712-72)

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