70%
MULTIPLE COMPACT DISC PLAYER
CD-425M/4260M/4700M
SERVICE MANUAL
© 2000-3/B51-5610-00 (K/K) 3037
DPF-J6030
Front glass
(B10-3558-18)
Front glass
(B10-3559-08)
Dressing panel *
(A21-)
Knob
(K29-7717-18)
Dressing panel
(A21-3813-08)
Panel
(A29-1081-18)
Knob
(K29-7716-18)
Panel
(A60-1753-38)
Pin jack
(E63-1078-05)
Power cord bushing
(J42-0083-05)
AC power cord
(E30-2883-05)
Miniature phone jack
(E11-0293-05)
Front glass
(B10-3557-08)
Dressing panel
(A21-3815-08)
Rectangular receptacle
(E58-0024-05)
Metallic cabinet *
(A01-)
Miniature phone jack
(E11-0360-05)
* Illustration is CD-4260M/4700M.
* Refer to parts list on page 18.
Oscillating module
(W02-1114-15)
In compliance with Federal Regulations, following are
reproduction of labels on, or inside the porduct relating to
laser product safety.
KENWOOD-Crop. certifies this equipment conforms to
DHHS Regulations No.21 CFR 1040. 10, Chapter 1, Sub-
chapter J.
DANGER : Laser radiation when open and interlock
defeated.
AVOID DIRECT EXPOSURE TO BEAM.
Refer to CD-223M/DPF-J3010 service manual (B51-5409-
00) if require the following items in detail.
1) Mechanism operation description.
2) Disassembly for repair.
Audio
(E30-0505-05)
(E30-2816-05)
(E30-2861-05)
cord ....................... (2)
System control cord ........ (1)
Batteries (R6/AA) ............ (4)
Communication cord ....... (1)
REMOTE CONTROL UNIT RC-KB2
REMOTE
CONTROL
UNIT
RC-P0714
T
U
V
X
Y
Z
W
/
.
(
'
)
MODE
SET
SELECTOR
DISC
DELETE
/CLEAR
SPACE
CHARAC.
/CHECK
/P.MODE
RANDOM
SELECTON
DISPLAY
CONFIRM
A
B
C
D
E
F
G
REPEAT
BEST
POWER
3
2
4
H
J
K
L
M
N
O
P
Q
R
S
1
7
6
8
5
+10
0
+
100
9
7
ENTER
6
4¢
1¡
DISC
SKIP
DOWN
U
P
CURSOR
CHARACTER
DOWN
UP
LEFT
RIGHT
I
Remote control units ...... (2)
(A70-1326-05): RC-KB2
Battery cover (A09-1176-08)
(A70-1336-18): RC-P0714
Battery cover (A09-0374-08)
To reset the registered contents
The registered contents for title, music type, user file, best se-
lection and DTS disc can be reset by the following procedure.
Operation to reset
The microcomputer may malfunction (impossibility to operate,
erroneous display, etc.) when the connection cords are un-
plugged while power is ON or due to an external factor. In this
case, execute the following method to reset the microcomputer
and return it to normal condition.
Unplug the power cord from the power socket and plug the
power cord into the socket again.
Unplug the power cord from the power socket, and while
holding the
7 key depressed, plug the power cord into the
socket again.
CD-425M/4260M/4700M/DPF-J6030
2
CONTENTS / ACCESSORIES / CAUTIONS
EXTERNAL VIEW
CONTENTS / ACCESSORIES / CAUTIONS ............. 2
EXTERNAL VIEW .......................................................2
CIRCUIT DESCRIPTION ............................................3
ADJUSTMENT ............................................................8
PC BOARD ................................................................ 9
SCHEMATIC DIAGRAM .......................................... 11
EXPLODED VIEW ....................................................15
PARTS LIST..............................................................17
SPECIFICATIONS ......................................Back cover
Contents
Accessories
Cautions
TIMER PLAY
OFF
ON
MULTIPLE COMPACT DISC PLAYER
ON/STANDBY
DISPLAY
DISC SKIP
0
PUSH OPEN
RANDOM
CONFIRM
REPEAT
6
7
4
¢
200 DISC LOADING WITH TWIN PICK UP MECHANISM
STANDBY
Front glass
(B10-2395-08)
Front glass
(B10-2396-18)
Dressing panel
(A21-3786-08)
Knob
(K29-6885-38)
Dressing panel *
(A21-)
Panel
(A29-1087-08)
Knob
(K29-6824-18)
Panel
(A60-1755-18)
* Illustration is CD-425M/DPF-J6030.
* Refer to parts list on page 17.
CD-425M/4260M/4700M/DPF-J6030
3
CIRCUIT DESCRIPTION
IC2
IC6
CD MECHA
CXD2587Q
CLOCK
35 CLOK
S1_SW 56
S1_SW
(DSP)
XLAT
36 XLAT
S2_SW 28
S2_SW
DATA
44 DATA
S3_SW 27
S3_SW
SCLK
33 SCLK
D1_SW 58
DISC_SW1
SENS
34 SENS
D2_SW 57
DISC_SW2
SYSM
45 MUTG
SCOR
46 SCOR
R_CW 24
ROTARY+
SQCO
73 SQSI
R_CCW 25
ROTARY-
SQCK
75 SCK/SQCK
LOAD_SW 55
LOAD_SW
UNLOAD_SW 54
UNLOAD_SW
IC13
67 SCK_SW
LOAD_P 31
LOADM+
uPD780232GC
CLK
LOAD_M 30
LOADM-
(DOT DRIVER)
SO
72 SI
SI
74 SO
STB
71 STB
RESET 43
RESET INPUT
REG_ON 29
PERIPHERY IC ON
TIMER_SW
IC RESET 63
PERIPHERY IC RESET
uPD784217GF501
TIMER PLAY
ON/OFF
SERIAL COMMUNICATION
49 SBUSY
50 SDATA
REMOCOM INPUT
48 REM
POWER KEY
47 POWER
JOG
60 JOG_2
59 JOG_1
DISC SENSOR ON/OFF
23 PWM
LASER ON/OFF
32 LDC
SPINDLE MOTOR ON/OFF
26 MON
DOOR OPEN/CLOSE
70 DOOR_SW
PROTECTION
53 PROTECT
IC10
ANALOG MUTE
10 RMUTE
84~91
(AD0~AD7)
CY62128L-70SC
(SRAM)
76~83,92~98
(A0~A14)
RD 5
OE
WR 6
WE
CS 7
CS
1. Main Microprocessor : uPD784217GF501
Microprocessor periphery block diagram
PORT
A/D 0(IC13,22pin)
A/D 1(IC13,21pin)
VOLTAGE
RESISTER
2.9V
5.1K
RANDOM
REPEAT
2.0V
3K
DISPLAY
CONFIRM
1.2V
2K
STOP
DOWN
0.4V
SHORT
PLAY
UP
2. Key matrix
CD-425M/4260M/4700M/DPF-J6030
4
CIRCUIT DESCRIPTION
Pin No.
Pin Name
I/O
Description
1
A16(1M)
O
No used.
2
A17
O
No connection.
3
SCL
O
No connection.
4
SDA
I/O
No connection.
5
RD
O
SRAM read strobe.
6
WR
O
SRAM write strobe
7
CE
O
Chip selector
8
ASTB(CE)
O
No connection.
9
VDD
-
Power supply(+5V).
10
RMUTE
O
Analog muting signal output.
11
RWRR
O
No connection.
12
RWR
I
No connection.
13
RTRN
I
No connection.
14-21
L-D7-D0
O
No connection.
22
VPP
-
GND.
23
+5VPWM
O
Disc sensor ON/OFF. L:on
24
R-M-CW
O
Mechanism rotary motor(+). H:CCW
25
R-M-CCW
O
Mechanism rotary motor(-). H:CW
26
MON
O
Control port of poor focus works.
27
S3-SW
I
Mechanism address detector switch.
28
S2-SW
I
Mechanism address detector switch.
29
REG-ON
O
Power ON/OFF control.
30
LOADM- (IN2)
O
Loading motor(-) for main pickup.
31
LOADM+ (IN1)
O
Loading motor(+) for main pickup.
32
LDC
O
Laser on/off. L: Laser diode on.
33
SCLK
O
Sens serial data read clock.
34
SENS
I
SENS signal input.
35
CLK
O
Serial data clock.
36
XLAT
O
CXD2587Q latch. H î L:latch
37
VDD
-
Power supply(+5V).
38,39
X1,2
-
Main system clock(12.5MHz).
40
VSS
-
GND.
41
XT2
-
No connection.
42
XT1
I
GND.
43
RESET
I
System reset signal input.
44
DATA
O
Serial data output.
45
MUTEG(SYSTEM)
O
System muting control output.
46
SCOR
I
Sub code synchro detection.
47
POWER
I
Power key input terminal.
48
REM
I
Remote control signal input.
49
SBUSY
I/O
Serial busy signal I/O.
50
SDATA
I/O
Serial data signal I/O.
51
AVDD
-
Power supply(+5V).
52
AVREF
-
A/D reference power supply.
53
PROTECT
I
Detection signal input of protection.
54
UNLOAD-SW1
I
Unloading switch for main pickup.
55
LOAD-SW1
I
Loading switch for main pickup.
56
S1-SW
I
Mechanism address detector switch.
57
DISC-SW2
I
Disc2 sensor input..
58
DISC-SW
I
Disc sensor.
59
JOG2
I
Encoder signal input.
60
JOG1
I
Encoder signal input.
3. Microprocessor pin description (X32, IC6) :UPD784217GF501
Pin No.
Pin Name
I/O
Description
61
AVSS
-
GND.
62
LED
O
STANDBY LED control terminal.
63
ICRESET
O
IC reset.
64
AVREF1
-
D/A reference power supply.
65
RXD-232C
I
No connection.
66
TXD-232C
O
No connection.
67
SQCK/SCK-SW
O
SQCK,SCK(DOT/DSP clock) selector. L:DSP.
68
RXD-R
I
No connection.
69
TXD-R
O
No connection.
70
DOOR-SW
I
Door open/close detector switch.
71
STB1
O
Strobe signal output to dot driver.
72
S1
O
Data output to dot driver.
73
SQS1
I
Sub code read data input.
74
S0
I
Data input from dot driver.
75
SCK/SQCK
O
Dot driver/sub code read clock.
76-83
A0~A7
O
Address output to SRAM.
84-91
D0-7
I/O
SRAM data bus.
92-98
A8~A14
O
Address output to SRAM.
99
A15(1M)
O
No used.
100
VSS
-
GND.
Pin No.
Pin Name
I/O
Description
1
VDD
-
Power supply(+5V)
2
VSS
-
GND.
3,4
X1,2
-
Main system clock.(5MHz).
5
VPP
-
GND.
6
RESET
I
System reset input.
7
SCK
I
Serial clock.
8
SI
I
Data input.
9
SO
O
Data output.
10
POW-P
I/O
Timer sw on input.
.
11
LED-A
O
No used.
12
LED-B
O
No used.
13
STANDBY
O
No used.
14
NC
-
No used.
15
STB
I
Strobe signal input.
16
REM
I
No used.
17
NC
-
No used.
18
AVSS
-
GND.
19,20
A/D3,A/D2
-
GND.
21,22
A/D1,A/D0
I
Key return signal input(1,0).
23
VSS
-
GND.
24,25
AVDD/VDD
-
Power supply(+5V)
26
NC
-
No connection.
27-43
P1-P17
O
FL control output. 1G(
38),2G-16G(P1to P17).
44-58
P21-35
O
FL control output. 2G-16G(P21to P35).
59
VDD
-
Power supply(+5V)
60
VLOAD
-
Negative power supply(-37.5V)
61-63
P18-P20
O
FL control output. 2G-16G(P18 to P20).
64
NC
-
No connection.
65-72
1G-8G
O
FL control output.1G-8G.
73-80
9G-16G
O
FL control output.9G-16G.
4. FL Microprocessor : UPD 780232GC-012 (X32-IC13)
Pin description
5
CIRCUIT DESCRIPTION
CD-425M/4260M/4700M/DPF-J6030