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Kenwood CD-423M-S Service Manual page 4

Multiple compact disc player
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CD-423M/423M-S/424M/DPF-J3030/J5030
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3 7 63 1515 0
3. Microprocessor pin description (X32, IC6) :UPD784214GF-533
Pin No.
Pin Name
1
A16(1M)
2
A17
3
SCL
4
SDA
5
RD
6
WR
7
CE
8
ASTB(CE)
9
VDD
10
RMUTE
11
RWRR
12
RWR
13
RTRN
14-21
L-D7-D0
22
VPP
23
+5VPWM
24
R-M-CW
25
R-M-CCW
26
MON
27
S3-SW
28
S2-SW
29
REG-ON
30
LOADM- (IN2)
TE
L 13942296513
31
LOADM+ (IN1)
32
LDC
33
SCLK
34
SENS
35
CLK
36
XLAT
37
VDD
38,39
X1,2
40
VSS
41
XT2
42
XT1
43
RESET
44
DATA
45
MUTEG(SYSTEM)
46
SCOR
47
POWER
48
REM
49
SBUSY
50
SDATA
51
AVDD
52
AVREF
53
PROTECT
54
UNLOAD-SW1
55
LOAD-SW1
www
56
S1-SW
57
DISC-SW2
58
DISC-SW
59
JOG2
60
JOG1
4
CIRCUIT DESCRIPTION
I/O
O
No used.
O
No connection.
O
No connection.
I/O
No connection.
O
SRAM read strobe.
O
SRAM write strobe
O
Chip selector
O
No connection.
-
Power supply(+5V).
O
Analog muting signal output.
O
No connection.
I
No connection.
I
No connection.
O
No connection.
-
GND.
O
Disc sensor ON/OFF. L:on
O
Mechanism rotary motor(+). H:CCW
O
Mechanism rotary motor(-). H:CW
O
Control port of poor focus works.
I
Mechanism address detector switch.
I
Mechanism address detector switch.
O
Power ON/OFF control.
O
Loading motor(-) for main pickup.
O
Loading motor(+) for main pickup.
O
Laser on/off. L: Laser diode on.
O
Sens serial data read clock.
I
SENS signal input.
O
Serial data clock.
O
CXD2587Q latch. H
-
Power supply(+5V).
-
Main system clock(12.5MHz).
-
GND.
-
No connection.
I
GND.
I
System reset signal input.
O
Serial data output.
O
System muting control output.
I
Sub code synchro detection.
I
Power key input terminal.
I
Remote control signal input.
I/O
Serial busy signal I/O.
I/O
Serial data signal I/O.
-
Power supply(+5V).
-
A/D reference power supply.
I
Detection signal input of protection.
I
Unloading switch for main pickup.
I
Loading switch for main pickup.
I
Mechanism address detector switch.
I
Disc2 sensor input..
x
ao
y
I
Disc sensor.
I
Encoder signal input.
.
i
I
Encoder signal input.
8
Description
Q Q
3
6 7
1 3
î L:latch
u163
.
2 9
9 4
2 8
1 5
0 5
8
2 9
9 4
m
co
9 9
2 8
9 9

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Cd-423mDpf-j3030Dpf-j5030Cd-424m