KENWOOD KDCD301 Service Manual

Cover page of KENWOOD KDCD301 Service Manual

Service Manual for KENWOOD KDCD301, downloadable as a PDF file.

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© 2001-3 PRINTED IN JAPAN
B51-7765-00(S) 3165
SERVICE MANUAL
CD PLAYER
KDC-D301
DIGITAL OPTMUM
SERVO CONTROL
INTEGRATED QUAD
1BIT D/A
KDC-D301
DPAC
CD PLAYER
11BAND
SPECTRUM ANALYZER
60
120
250
380
500
750
1k
2k
4k
8k
16k
DISP
MENU
CONVERTER
ESCUTCHEON
(B07-2188-02)
PANEL ASSY
(A64-2366-02)
FRONT GLASS
(B10-4055-02)
KNOB
(K24-1923-14)
PLASTIC CABINET ASSY
(A02-1486-13)
MOUNTING HARDWARE ASSY
(J21-9491-13)
SCREW SET
(N99-1656-05)
: K TYPE ONLY
SCREW SET
(N99-1632-05)
: K TYPE ONLY
STAY
(J54-0606-04)
: K TYPE ONLY
LEVER x 2
(D10-3031-04)
DC CORD
(E30-4730-05)
CUSHION
(G11-1860-05)
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© 2001-3 PRINTED IN JAPAN
B51-7765-00(S) 3165
SERVICE MANUAL
CD PLAYER
KDC-D301
DIGITAL OPTMUM
SERVO CONTROL
INTEGRATED QUAD
1BIT D/A
KDC-D301
DPAC
CD PLAYER
11BAND
SPECTRUM ANALYZER
60
120
250
380
500
750
1k
2k
4k
8k
16k
DISP
MENU
CONVERTER
ESCUTCHEON
(B07-2188-02)
PANEL ASSY
(A64-2366-02)
FRONT GLASS
(B10-4055-02)
KNOB
(K24-1923-14)
PLASTIC CABINET ASSY
(A02-1486-13)
MOUNTING HARDWARE ASSY
(J21-9491-13)
SCREW SET
(N99-1656-05)
: K TYPE ONLY
SCREW SET
(N99-1632-05)
: K TYPE ONLY
STAY
(J54-0606-04)
: K TYPE ONLY
LEVER x 2
(D10-3031-04)
DC CORD
(E30-4730-05)
CUSHION
(G11-1860-05)
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BLOCK DIAGRAM
KDC-D301
2
CONTENTS
BLOCK DIAGRAM .............................................................. 2
COMPONENT DESCRIPTION ........................................... 3
MICROCOMPUTER'S DESCRIPTION ............................... 5
PC BOARD ......................................................................... 7
SCHEMATIC DIAGRAM ................................................... 13
EXPLODED VIEW ............................................................ 19
PARTS LIST ...................................................................... 21
SPECIFICATIONS ............................................... Back cover
P ON
VDD
AVDD
BPF SEL
BPF A
BPF B
BPF C
B.U.DET
A
MUTE
BEEP
SW 5V
BU +5V
AUDIO +B
ILL +B
B.U.
DET
AUDIO MUTE
BU
5
V
SER
V
O
+B
A
UD
+B
L
CH
ILL
+B
B.
U
.
L
CH
R
CH
R
CH
2
4.19MHz
CLOCK
BUZZ
B.P.F.
4
AMP
AGC
VREF
ISO AMP
SP INPUT
4
13PIN
22PIN
16PIN
SYSTEM
MI-COM
CH CORD
Q9
Q1,2
Q19
Q3,4
Q14,15,20
Q7,8
Q5,6
X1
Q13
(2/2)
IC5
IC6
IC7
BPF IN
(1/2)
IC6
4PIN
SERVO +B
to H.U.
IC1
SW 14V
Q17
CD MECHANISM
MUTE
R
ST
OP
SW2
LO/EJ
MUTE
L
RST
SW3
SW1
SD
A
SCL
MO
SW
LCD DRIVER
IC1
Q1
ED1
LCD
DIMMER SW
LCD AVR
P
AN
5V
(X13- )
L
D
ATA
L
L
CE
L
CLK
(X92- )
L
INH
CN4
CN5
(X89- )
CN1
J1
J1
ILL
+B
DISP
EJECT
P
AN
5V
PAN 5V
2
PAN 5V SW
Q10
P
KEY
EJECT
P
ANEL
CH
CON
RESET SW
Q16
IC2
RESET
J1
CN1
CN3
CN2
CH
RST
D
ATA
H
D
ATA
C
CH
CLK
REQ
H
REQ
C
CH
CON
CH
MUTE
(X25- )
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KDC-D301
3
COMPONENT DESCRIPTION
q SWITCH UNIT(X16-110X-XX)
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
IC1
LC75823W
LCD driver
Q1
2SC4081
Dimmer SW
When Q1's base goes "Hi", Dimmer LEDs are turned
on.
q ELECTRIC UNIT(X25-8902-71)
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
IC1
UPD780058GC255
System MI-COM.
IC2
S-80830ANNP
Reset IC
When BU 5V voltage is less than 3.0V, IC outputs
"Lo".
IC5
NJM4565M-TE2
Isolation amp.
IC6
NJM4565M-TE2
1/2 VCC & A.G.C.amp.
IC7
BA3834F
BPF IC
Q1
2SC4081
BU 5V AVR
While BACKUP is applied, AVR outputs +5V.
Q2
2SA1870 or 2SB1450
Q1 and Q2 are inverted Darlington connection.
Q3
2SC4081
Audio +B AVR
While Q3's base goes "Hi", AVR outputs +8.0V.
Q4
2SB1202
Q5
2SC4081
Illumination +B AVR
While Q5's base goes "Hi", AVR outputs +10.5V.
Q6
2SB1202
Q7
2SC4081
Servo +B AVR
While Q7's base goes "Hi", AVR outputs +8.0V.
Q8
2SB1202
Q9
2SC4081
BU detection SW
While BACKUP is applied, a base goes "Hi", and Q12
is turned on.
When momentary power down has detected, a base
goes "Lo", and Q12 is turned off.
Q10
2SA1037K
Panel 5V SW
When a base goes "Lo" during panel closed, Q10 is
turned on.
Q11
2SC4081
Guide or Eject illumination SW
When a base goes "Hi", Guide or Eject illumination
LED is lighting-up.
Q12
DTA143EUA
Changer mute SW
When CHANGER MUTE REQUEST to H/U is worked,
a base goes "Lo" and Q12 is turned on.
Q13
DTC144EUA or UN5213
Buzzer SW
When a base goes "Hi", Buzzer is turned on.
Q14
DTC343TK
Audio mute SW(L Ch)
When a base goes "Hi", Audio mute is activated.
Q15
DTC343TK
Audio mute SW(R Ch)
When a base goes "Hi", Audio mute is activated.
Q16
DTC144EUA or UN5213
Changer reset SW
When CHANGER RESET from H/U is worked, a base
goes "Hi" and Q19 is turned on.
Q17
UMC2N
SW 14V
Audio +8V AVR, Illumination +B AVR, Servo +B AVR
on/off control
When a base goes "Hi", Q17 is turned on, and Each
AVR are working.
Q18
DTC144EUA or UN5213
BU detection inverter
Q19
UMC2N
SW 5V
CD MECHA. SW, BPF IC on/off control
When a base goes "Lo", Q19 is turned on, and Each
circuits are working.
Q20
UMC2N
Audio mute driver
When a base goes "Hi", Audio mute driver outputs
"Hi".
Q21
2SD2114K
AGC
Signal level control
Q22
DTC144EUA or UN5213
Changer control SW
When CHANGER CONTROL from H/U goes "Hi",
Q15 is turned on.
Q23
2SA1037K
LED +B SW
When Q23's base goes "Hi", BU 5V is supplied to the
Q24
DTC144EUA or UN5213
Switch Unit.
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KDC-D301
4
COMPONENT DESCRIPTION
q CD PLAYER UNIT(X32-5010-00)
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
IC1
AN22000AA
RF amplifier
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, Gain control function building in.
IC2
MN662774KG1
CD signal processor bult-in
MI-COM.
IC4
BA5917AFP
4CH BTL driver
Focusing coil, tracking coil, spindle motor and sled
motor driver
IC6
NJM4565MD
OP Amp.
Low pass filter
Q1
MCH6101
APC
LD power control
Q2
DTC124EUA
P ON SW
When CD source is selected, Q2's base goes "Hi",
Q3 and Q4 are turned on.
Q3
DTA143XUA
A.8V SW
A8V ON/OFF control. When a base goes "Lo", Q3 is
turnde on.
Q4
2SA1362(Y)
D.5V SW
D5V ON/OFF control. When a base goes "Lo", Q4 is
turnde on.
Q5
DTC124EUA
MOTOR SW
When CD loading or eject operation is activating, Q5's
base goes "Hi", Q4 is turned on.
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KDC-D301
5
MICROCOMPUTER'S DESCRIPTION
IC1 (ELECTRIC UNIT: X25-8902-71)
q Terminal Description
Pin No. Pin Name
I/O
Description
Processing Operation
1
EJECT
I
Eject key input
"Lo": Eject key pressed
2
REF CON
O
A/D converter reference voltage control output
"Hi": Reference voltage supplying
3
NC
O
Not used(N.C.)
4
AVSS
-
A/D, D/A converter ground connection terminal
Connected to ground lines.
5
NC
O
Not used(N.C.)
6
NC
O
Not used(N.C.)
7
AVREF1
-
D/A converter reference voltage input terminal
Connected to BU 5V lines.
8-10
NC
O
Not used(N.C.)
11
DATA H
I
Data input from H/U
12
DATA C
O
Data output to H/U
13
CH CLK
I/O Clock input/output with H/U
New type: Input, Previous type: Output
14
REQ C
O
Communication request to H/U
"Lo": Communication request
15
NC
O
Not used(N.C.)
16
P KEY
I
Key data input from LCD driver IC
17
L DATA
O
Data output to LCD driver IC
18
L CLK
O
Clock output to LCD driver IC
19
NC
O
Not used(N.C.)
20
NC
O
Not used(N.C.)
21
MSTOP
O
Stop request to CD mechanism MI-COM.
"Lo": Stop mode, "Hi": Operation mode
22
L INH
O
INH output to LCD driver IC
"Lo": Display lighting-up, "Hi": Display lighting -out
23
L CE
O
CE output to LCD IC
"Hi": Data communication
24
DIMMER
O
Dimmer output
"Lo": Dimmer mode, "Hi": Except dimmer mode
25
NC
O
Not used(N.C.)
26
BPF SEL
O
BPF IC control output
(SEL,A,B,C)=("Lo",X,X,X) .................. GND
27
BPF A
O
BPF IC band control output A
(SEL,A,B,C)=("Hi","Lo","Lo","Lo") ...... GND
(SEL,A,B,C)=("Hi","Lo","Lo","Hi") ...... 68Hz
(SEL,A,B,C)=("Hi","Lo","Hi","Lo") ...... 170Hz
28
BPF B
O
BPF IC band control output B
(SEL,A,B,C)=("Hi","Lo","Hi","Hi") ....... 420Hz
(SEL,A,B,C)=("Hi","Hi","Lo","Lo") ...... 1kHz
(SEL,A,B,C)=("Hi","Hi","Lo","Hi") ....... 2.4kHz
29
BPF C
O
BPF IC band control output C
(SEL,A,B,C)=("Hi","Hi","Hi","Lo") ....... 5.9kHz
(SEL,A,B,C)=("Hi","Hi","Hi","Hi") ....... 14.4kHz
30,31 NC
O
Not used(N.C.)
32
G ILLUMI
O
Disc indicator control output
"Hi": Indicator lighting-up, "Lo": Indicator lighting-
out
33
VSS1
-
Ground connection terminal
Connected to ground lines.
34
TYPE1
I
Destination selection terminal
J type : Pull down to ground lines
K,E type: Pull up to BU 5V lines
35
NC
O
Not used(N.C.)
36
SDA
I/O Data input/output with CD mechanism MI-COM.
37
SCL
I/O Clock input/output with CD mechanism MI-COM.
38
NC
O
Not used(N.C.)
39
CH MUTE
O
Audio mute request to H/U
"Lo": Mute request
40
MUTE
O
Audio mute control output
"Hi": Audio mute on, "Lo": Audio mute off
41
NC
O
Not used(N.C.)
42
PON
O
Peripheral circuits AVR control output
"Hi": A.+8V AVR, ILL +B AVR , SERVO +B AVR
and BPF IC are turned on.
43
NC
O
Not used(N.C.)
44
BEEP
O
Beep output
45
MRST
O
Reset output to CD mechanism MI-COM.
"Lo": CD mechanism MI-COM. reset
46
CD MUTE
I
Mute request input from CD mechanism MI-COM. "Lo": Mute request
47
EJ BUP
I
OR input (EJECT key, B UP inverter signal)
48
NC
O
Not used(N.C.)
49
MOTOR
O
CD mechanism loading motor control output
"Hi": CD loading/eject action or Break, "Lo": other
50
LOEJ
I/O CD mechanism loading/Eject switching output
"Lo": Loading, "Hi": Eject, "Hi-Z": Stop or Break

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